From fed0ed605ee4c2377d49d88665f41114b3154bb8 Mon Sep 17 00:00:00 2001
From: Joris <joris.l@hotmail.com>
Date: Fri, 19 Nov 2021 13:50:52 +0100
Subject: [PATCH] Query converter cleaned and tested
Test are "test all at once"-tests and more tests could definitely be added to tests individual components, but for now these will probably suffice
---
cypher/convertQuery.go | 827 ++++++++++++++------
cypher/convertQueryNew.go | 614 ---------------
cypher/convertQueryNew_test.go | 650 ----------------
cypher/convertQuery_test.go | 1327 ++++++++++++++------------------
cypher/healthChecks.go | 45 +-
5 files changed, 1198 insertions(+), 2265 deletions(-)
delete mode 100644 cypher/convertQueryNew.go
delete mode 100644 cypher/convertQueryNew_test.go
diff --git a/cypher/convertQuery.go b/cypher/convertQuery.go
index e36d240..25c6b51 100644
--- a/cypher/convertQuery.go
+++ b/cypher/convertQuery.go
@@ -1,240 +1,603 @@
-/*
-This program has been developed by students from the bachelor Computer Science at Utrecht University within the Software Project course.
-© Copyright Utrecht University (Department of Information and Computing Sciences)
-*/
-
package cypher
import (
+ "errors"
+ "fmt"
+ "strings"
+
"git.science.uu.nl/graphpolaris/query-conversion/entity"
)
-/*
-ConvertQuery converts an IncomingQueryJSON object into AQL
- JSONQuery: *entity.IncomingQueryJSON, the query to be converted to AQL
- Returns: (*string, error), the AQL query and a possible error
-*/
-func (s *Service) ConvertQuery(JSONQuery *entity.IncomingQueryJSON) (*string, error) {
-
- // // Check to make sure all indexes exist
- // // How many entities are there
- // numEntities := len(JSONQuery.Entities) - 1
- // // How many relations there are
- // numRelations := len(JSONQuery.Relations) - 1
-
- // // Make sure no entity should be returned that is outside the range of that list
- // for _, e := range JSONQuery.Return.Entities {
- // // If this entity references an entity that is outside the range
- // if e > numEntities || e < 0 {
- // return nil, errors.New("non-existing entity referenced in return")
- // }
- // }
-
- // // Make sure that no relation mentions a non-existing entity
- // for _, r := range JSONQuery.Relations {
- // if r.EntityFrom > numEntities || r.EntityTo > numEntities {
- // return nil, errors.New("non-exisiting entity referenced in relation")
- // }
- // }
-
- // // Make sure no non-existing relation is tried to be returned
- // for _, r := range JSONQuery.Return.Relations {
- // if r > numRelations || r < 0 {
- // return nil, errors.New("non-existing relation referenced in return")
- // }
- // }
-
- // result := createQuery(JSONQuery)
- // return result, nil
- return nil, nil
+// ConvertQuery takes the json from the visual query builder and converts it into Cypher
+func (s *Service) ConvertQuery(totalJSONQuery *entity.IncomingQueryJSON) (*string, error) {
+ var finalCypher *string
+
+ queryJSON := totalJSONQuery
+
+ query, rest, isRest := checkForQueryCluster(queryJSON)
+
+ if isRest {
+ fmt.Println("Rest:")
+ fmt.Println(rest)
+
+ // If something needs to be done with other query cluster, then add code here
+ }
+
+ finalCypher, err := createCypher(query)
+ if err != nil {
+ return nil, err
+ }
+
+ return finalCypher, nil
}
-// /*
-// sliceContains checks if a slice contains the input
-// s: []int, the slice to check
-// e: int, what you're checking for
-// Return: bool, true if it contains 'e'
-// */
-// func sliceContains(s []int, e int) bool {
-// for _, a := range s {
-// if a == e {
-// return true
-// }
-// }
-// return false
-// }
-
-// /*TrimSuffix trims the final character of a string */
-// func TrimSuffix(s, suffix string) string {
-// if strings.HasSuffix(s, suffix) {
-// s = s[:len(s)-len(suffix)]
-// }
-// return s
-// }
-
-// /*
-// createQuery generates a query based on the json file provided
-// JSONQuery: *entity.IncomingQueryJSON, jsonQuery is a parsedJSON struct holding all the data needed to form a query
-// Return: *string, a string containing the corresponding AQL query and an error
-// */
-// func createQuery(JSONQuery *entity.IncomingQueryJSON) *string {
-// // Note: Case #4, where there is an edge only query (without any entity), is not supported by frontend
-
-// // If a modifier is used, disable the limit
-// if len(JSONQuery.Modifiers) > 0 {
-// JSONQuery.Limit = -1
-// }
-
-// var (
-// relationsToReturn []string
-// nodesToReturn []string
-// nodeUnion string
-// relationUnion string
-// queryList [][][]int
-// entityList []int
-// ret string
-// )
-
-// for i, relation := range JSONQuery.Relations {
-// var contains bool
-// contains = false
-// for j := range queryList {
-// if sliceContains(queryList[j][0], relation.EntityFrom) || sliceContains(queryList[j][0], relation.EntityTo) {
-// if !sliceContains(queryList[j][0], relation.EntityFrom) {
-// queryList[j][0] = append(queryList[j][0], relation.EntityFrom)
-// entityList = append(entityList, relation.EntityFrom)
-// }
-// if !sliceContains(queryList[j][0], relation.EntityTo) {
-// queryList[j][0] = append(queryList[j][0], relation.EntityTo)
-// entityList = append(entityList, relation.EntityTo)
-// }
-// queryList[j][1] = append(queryList[j][1], i)
-// contains = true
-// }
-// }
-// if !contains {
-// queryList = append(queryList, [][]int{{relation.EntityFrom, relation.EntityTo}, {i}})
-// }
-// }
-
-// for i := range queryList {
-// //reset variables for the next query
-// nodeUnion = ""
-// relationUnion = ""
-// relationsToReturn = []string{}
-// for j, relationID := range queryList[i][1] {
-// relationName := fmt.Sprintf("r%v", j)
-// relation := JSONQuery.Relations[relationID]
-// pathName := fmt.Sprintf("p%v", j)
-// relationsToReturn = append(relationsToReturn, pathName)
-// if relation.EntityFrom >= 0 {
-// // if there is a from-node
-// // create the let for this node
-// fromName := fmt.Sprintf("n%v", relation.EntityFrom)
-
-// ret += *createNodeMatch(&JSONQuery.Entities[relation.EntityFrom], &fromName)
-
-// ret += *createRelationMatch(&relation, relationName, pathName, &JSONQuery.Entities, JSONQuery.Limit, true)
-// } else if relation.EntityTo >= 0 {
-// // if there is only a to-node
-// toName := fmt.Sprintf("n%v", relation.EntityTo)
-
-// ret += *createNodeMatch(&JSONQuery.Entities[relation.EntityTo], &toName)
-
-// ret += *createRelationMatch(&relation, relationName, pathName, &JSONQuery.Entities, JSONQuery.Limit, false)
-// // Add this relation to the list
-// } else {
-// fmt.Println("Relation-only queries are currently not supported")
-// continue
-// }
-// }
-
-// // Create UNION statements that create unique lists of all the nodes and relations
-
-// // Thus removing all duplicates
-// nodeUnion = "RETURN "
-
-// for _, entityID := range queryList[i][0] {
-// if sliceContains(JSONQuery.Return.Entities, entityID) {
-// nodeUnion += fmt.Sprintf("n%v,", entityID)
-// }
-// }
-
-// for _, relation := range relationsToReturn {
-// relationUnion += fmt.Sprintf("%v,", relation)
-// }
-
-// relationUnion = TrimSuffix(relationUnion, ",")
-// // hier zat een newline
-// ret += nodeUnion + relationUnion + "; "
-// }
-
-// nodeSet := make(map[int]bool)
-// for _, relation := range JSONQuery.Relations {
-// nodeSet[relation.EntityFrom] = true
-// nodeSet[relation.EntityTo] = true
-// }
-
-// // Check if the entities to return are already returned
-// for _, entityIndex := range JSONQuery.Return.Entities {
-// if !nodeSet[entityIndex] {
-// // If not, return this node
-// name := fmt.Sprintf("n%v", entityIndex)
-// ret += *createNodeMatch(&JSONQuery.Entities[entityIndex], &name)
-// // Add this node to the list
-// nodesToReturn = append(nodesToReturn, name)
-// ret += fmt.Sprintf("RETURN %v", name)
-// }
-// }
-
-// ret = TrimSuffix(ret, " ")
-// return &ret
-// }
-
-// /*
-// createNodeLet generates a 'LET' statement for a node related query
-// node: *entity.QueryEntityStruct, node is an entityStruct containing the information of a single node,
-// name: *string, is the autogenerated name of the node consisting of "n" + the index of the node
-// Return: *string, a string containing a single LET-statement in AQL
-// */
-// func createNodeMatch(node *entity.QueryEntityStruct, name *string) *string {
-// // hier zat een newline
-// header := fmt.Sprintf("MATCH (%v:%v) ", *name, node.Type)
-// constraints := *createConstraintStatements(&node.Constraints, *name)
-// ret := header + constraints
-// return &ret
-// }
-
-// /*
-// createRelationLetWithFromEntity generates a 'LET' statement for relations with an 'EntityFrom' property and optionally an 'EntitiyTo' property
-// relation: *entity.QueryRelationStruct, relation is a relation struct containing the information of a single relation,
-// relationName: string, is the name of the relation, is the autogenerated name of the node consisting of "r" + the index of the relation,
-// pathName: string, is the path of the name,
-// entities: *[]entity.QueryEntityStruct, is a list of entityStructs that are needed to form the relation LET-statement
-// limit: int, the limit for the number of nodes to return
-// outbound: bool, checks if the relation is inbound or outbound
-// Return: *string, a string containing a single LET-statement in AQL
-// */
-// func createRelationMatch(relation *entity.QueryRelationStruct, relationName string, pathName string, entities *[]entity.QueryEntityStruct, limit int, outbound bool) *string {
-// relationReturn := ""
-// var relationBounds int
-// if outbound {
-// relationReturn = fmt.Sprintf("MATCH %v = (n%v)-[%v:%v*%v..%v]->(", pathName, relation.EntityFrom, relationName, relation.Type, relation.Depth.Min, relation.Depth.Max)
-// relationBounds = relation.EntityTo
-
-// } else {
-// relationReturn = fmt.Sprintf("MATCH %v = (n%v)-[%v:%v*%v..%v]->(", pathName, relation.EntityTo, relationName, relation.Type, relation.Depth.Min, relation.Depth.Max)
-// relationBounds = relation.EntityFrom
-// }
-
-// if relationBounds != -1 {
-// relationReturn += fmt.Sprintf("n%v", relationBounds)
-// }
-// relationReturn += ")"
-
-// constraintReturn := *createConstraintStatements(&relation.Constraints, relationName)
-// // hier zat een newline
-// ret := relationReturn + " " + constraintReturn
-
-// return &ret
-// }
+// createCypher translates a cluster of nodes (query) to Cypher
+func createCypher(JSONQuery *entity.IncomingQueryJSON) (*string, error) {
+
+ // create the hierarchy from the cluster
+ hierarchy, err := createQueryHierarchy(JSONQuery)
+ if err != nil {
+ return nil, errors.New("Unable to create hierarchy in query, perhaps there is a dependency loop?")
+ }
+
+ // translate it to cypher in the right order, using the hierarchy
+ cypher, err := formQuery(JSONQuery, hierarchy)
+ if err != nil {
+ return nil, errors.New("Creation of query Cypher failed")
+ }
+
+ // create the return statement
+ returnStatement, err := createReturnStatement(JSONQuery, hierarchy)
+ if err != nil {
+ return nil, errors.New("Creation of return Cypher failed")
+ }
+
+ finalCypher := *cypher + *returnStatement
+
+ return &finalCypher, nil
+}
+
+// createReturnStatement creates the final return statement
+func createReturnStatement(JSONQuery *entity.IncomingQueryJSON, parts entity.Query) (*string, error) {
+
+ var retStatement string
+
+ // First check to see if the return is a table (due to a groupby at the end) or if it is nodelink data
+ numOfParts := len(parts)
+ if parts[numOfParts-1].QType == "groupBy" {
+ // Return is a table
+ groupBy := JSONQuery.FindG(parts[numOfParts-1].QID)
+
+ gName := fmt.Sprintf("%v_%v", groupBy.AppliedModifier, groupBy.GroupAttribute)
+ by := fmt.Sprintf("%v%v.%v", string(groupBy.ByType[0]), groupBy.ByID, groupBy.ByAttribute)
+ byName := strings.Replace(by, ".", "_", 1)
+
+ retStatement = fmt.Sprintf("RETURN %v, %v", byName, gName)
+ } else {
+ // Return is nodelink
+ // Loop through the parts of the query from back to front
+ retStatement = "RETURN "
+ lineStart := ""
+ for i := numOfParts - 1; i >= 0; i-- {
+ part := parts[i]
+ if part.QType == "relation" {
+ rel := JSONQuery.FindR(part.QID)
+ retStatement += fmt.Sprintf("%v r%v", lineStart, rel.ID)
+ lineStart = ","
+
+ if rel.FromID != -1 {
+ if rel.FromType == "entity" {
+
+ retStatement += fmt.Sprintf("%v e%v", lineStart, rel.FromID)
+ } else {
+ id := JSONQuery.FindG(rel.FromID).ByID
+ retStatement += fmt.Sprintf("%v eg%v", lineStart, id)
+ }
+ }
+
+ if rel.ToID != -1 {
+ if rel.ToType == "entity" {
+
+ retStatement += fmt.Sprintf("%v e%v", lineStart, rel.ToID)
+ } else {
+ id := JSONQuery.FindG(rel.ToID).ByID
+ retStatement += fmt.Sprintf("%v eg%v", lineStart, id)
+ }
+ }
+ } else if part.QType == "entity" {
+ retStatement += fmt.Sprintf("%v e%v", lineStart, part.QID)
+ break
+
+ // Probably ends with a break, since a single entity is always connected via an IN to a groupby? (maybe not in case of ONLY having an entity as the entire query)
+ } else {
+ // Then it is a groupby which must not be returned, thus the returns are done.
+ break
+ }
+ }
+ }
+
+ retStatement = retStatement + "\n" + fmt.Sprintf("LIMIT %v", JSONQuery.Limit)
+
+ return &retStatement, nil
+}
+
+// createQueryHierarchy finds out what depends on what, then uses topological sort to create a hierarchy
+func createQueryHierarchy(JSONQuery *entity.IncomingQueryJSON) (entity.Query, error) {
+
+ var parts entity.Query
+ IDctr := 0
+
+ // Add relations all to query parts
+ for _, rel := range JSONQuery.Relations {
+ part := entity.QueryPart{
+ QType: "relation",
+ QID: rel.ID,
+ PartID: IDctr,
+ Dependencies: make([]int, 0),
+ }
+ parts = append(parts, part)
+
+ IDctr++
+
+ }
+
+ // Add the Groupby's
+ for _, gb := range JSONQuery.GroupBys {
+ part := entity.QueryPart{
+ QType: "groupBy",
+ QID: gb.ID,
+ PartID: IDctr,
+ Dependencies: make([]int, 0),
+ }
+ parts = append(parts, part)
+
+ IDctr++
+
+ }
+
+ // Add the entities, if they have an IN, otherwise they are not important
+ for _, ent := range JSONQuery.Entities {
+
+ skip := true
+ for _, con := range ent.Constraints {
+ if con.InID != -1 {
+ skip = false
+ }
+ }
+
+ if skip {
+ continue
+ }
+
+ part := entity.QueryPart{
+ QType: "entity",
+ QID: ent.ID,
+ PartID: IDctr,
+ Dependencies: make([]int, 0),
+ }
+ parts = append(parts, part)
+
+ IDctr++
+ }
+
+ // Check dependencies in a nice O(n^2)
+ for _, rel := range JSONQuery.Relations {
+ if rel.FromID == -1 {
+ continue
+ }
+
+ // Check the dependencies From - To
+ for _, rela := range JSONQuery.Relations {
+ if rela.ToID == -1 {
+ continue
+ }
+
+ if rel.FromID == rela.ToID && rel.FromType == rela.ToType {
+ part := parts.Find(rel.ID, "relation")
+ part.Dependencies = append(part.Dependencies, parts.Find(rela.ID, "relation").PartID)
+ }
+ }
+
+ if rel.ToID == -1 {
+ continue
+ }
+
+ // Now for connections to group by's it doesnt matter if the GB is attached to the from or the to
+ // The GB always has priority
+ for _, gb := range JSONQuery.GroupBys {
+ if (rel.FromID == gb.ID && rel.FromType == "groupBy") || (rel.ToID == gb.ID && rel.ToType == "groupBy") {
+ part := parts.Find(rel.ID, "relation")
+ gbID := parts.Find(gb.ID, "groupBy").PartID
+ part.Dependencies = append(part.Dependencies, gbID)
+ }
+ }
+ }
+
+ // Same trick for group by's
+ for _, gb := range JSONQuery.GroupBys {
+ for _, rela := range JSONQuery.Relations {
+ // Check if the gb is connected to the relation
+ if (gb.ByID == rela.ID && gb.ByType == "relation") || // Is the By connected to a relation
+ (gb.GroupID == rela.ID && gb.GroupType == "relation") || // is the Group connected to a relation
+ (gb.ByID == rela.FromID && gb.ByType == rela.FromType) || // Is the by connected to an entity connected to the "From" of a relation
+ (gb.ByID == rela.ToID && gb.ByType == rela.ToType) || // Is the by connected to an entity connected to the "To" of a relation
+ (gb.GroupID == rela.FromID && gb.GroupType == rela.FromType) || // Is the group connected to an entity connected to the "From" of arelation
+ (gb.GroupID == rela.ToID && gb.GroupType == rela.ToType) { // Is the group connected to an entity connected to the "To" of a relation
+ part := parts.Find(gb.ID, "groupBy")
+ part.Dependencies = append(part.Dependencies, parts.Find(rela.ID, "relation").PartID)
+ }
+ }
+
+ // Not sure if this is even possible, but hey who knows
+ // Check to see if the gb is connected to another gb
+ for _, grb := range JSONQuery.GroupBys {
+ if gb.ID == grb.ID {
+ continue
+ }
+
+ if (gb.GroupID == grb.ID && gb.GroupType == "groupBy") || (gb.ByID == grb.ID && gb.ByType == "groupBy") {
+ part := parts.Find(gb.ID, "groupBy")
+ part.Dependencies = append(part.Dependencies, parts.Find(grb.ID, "groupBy").PartID)
+ }
+ }
+ }
+
+ for _, ent := range JSONQuery.Entities {
+ for _, con := range ent.Constraints {
+ if con.InID != -1 {
+ part := parts.Find(ent.ID, "entity") // Should always be groupBy
+ part.Dependencies = append(part.Dependencies, parts.Find(con.InID, con.InType).PartID)
+ }
+ }
+
+ }
+
+ // Now we have a directed graph, meaning we can use some topological sort (Kahn's algorithm)
+ var sortedQuery entity.Query
+ incomingEdges := make(map[int]int)
+
+ // Set all to 0
+ for _, p := range parts {
+ incomingEdges[p.PartID] = 0
+ }
+
+ // Count the incoming edges (dependencies)
+ for _, p := range parts {
+ for _, dp := range p.Dependencies {
+ incomingEdges[dp]++
+ }
+ }
+
+ for { // While there is a someone where incomingEdges[someone] == 0
+ part := entity.QueryPart{PartID: -1}
+ // Select a node with no incoming edges
+ for ID, edges := range incomingEdges {
+ if edges == 0 {
+ part = *parts.SelectByID(ID)
+ }
+ }
+
+ // Check to see if there are parts withouth incoming edges left
+ if part.PartID == -1 {
+ break
+ }
+
+ // Remove it from the set
+ incomingEdges[part.PartID] = -1
+ sortedQuery = append(sortedQuery, part)
+
+ // Decrease incoming edges of other parts
+ for _, ID := range part.Dependencies {
+ incomingEdges[ID]--
+ }
+ }
+
+ // Now check for cycles in the graph
+ partRemaining := false
+ for _, edges := range incomingEdges {
+ if edges != -1 {
+ partRemaining = true
+ }
+ }
+
+ if partRemaining {
+ // Somehow there was a cycle in the query,
+ return nil, errors.New("Cyclic query detected")
+ }
+
+ // Reverse the list
+ retQuery := make([]entity.QueryPart, len(sortedQuery))
+ for i := 0; i < len(sortedQuery); i++ {
+ retQuery[i] = sortedQuery[len(sortedQuery)-i-1]
+ }
+
+ return retQuery, nil
+}
+
+// formQuery uses the hierarchy to create cypher for each part of the query in the right order
+func formQuery(JSONQuery *entity.IncomingQueryJSON, hierarchy entity.Query) (*string, error) {
+
+ // Traverse through the hierarchy and for every entry create a part like:
+ // Match p0 = (l:Lorem)-[:Ipsum*1..1]-(d:Dolor)
+ // Constraints on l and d
+ // Unwind relationships(p0) as r0
+ // Constraints on r0
+ // With *
+
+ totalQuery := ""
+
+ for _, entry := range hierarchy {
+ var cypher *string
+ var err error
+
+ switch entry.QType {
+ case "relation":
+ cypher, err = createRelationCypher(JSONQuery, entry)
+ if err != nil {
+ return nil, err
+ }
+ break
+ case "groupBy":
+ cypher, err = createGroupByCypher(JSONQuery, entry)
+ if err != nil {
+ return nil, err
+ }
+
+ break
+ case "entity":
+ // This would be in case of an IN or if there was only 1 entity in the query builder
+ cypher, err = createInCypher(JSONQuery, entry)
+ if err != nil {
+ return nil, err
+ }
+
+ break
+ default:
+ // Should never be reached
+ return nil, errors.New("Invalid query pill type detected")
+ }
+
+ totalQuery += *cypher
+ }
+
+ return &totalQuery, nil
+}
+
+// createInCypher creates the cypher for an entity with an IN-clause
+func createInCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
+ ent := JSONQuery.FindE(part.QID)
+ eName := fmt.Sprintf("e%v", ent.ID)
+
+ match := fmt.Sprintf("MATCH (%v:%v)\n", eName, ent.Name)
+ eConstraints := ""
+ newLineStatement := "\tWHERE"
+
+ // Find the IN
+ for _, con := range ent.Constraints {
+ if con.InID != -1 {
+ gby := JSONQuery.FindG(con.InID) // Because this could only be on a groupby
+ byName := fmt.Sprintf("%v%v", string(gby.ByType[0]), gby.ByID)
+ eConstraints += fmt.Sprintf("%v %v.%v IN %v_%v\n", newLineStatement, eName, con.Attribute, byName, gby.ByAttribute)
+ newLineStatement = "\tAND"
+ }
+ }
+
+ // Attach other constraints (if any)
+ for _, v := range ent.Constraints {
+ if v.InID != -1 {
+ continue
+ }
+ eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
+ }
+
+ with := "WITH *\n"
+ retStatement := match + eConstraints + with
+ return &retStatement, nil
+
+ // Should be able to handle multiple IN statements from one entity, not sure if that will ever happen
+ // TODO: test this
+}
+
+// createRelationCypher takes the json and a query part, finds the necessary entities and converts it into cypher
+func createRelationCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
+
+ rel := JSONQuery.FindR(part.QID)
+
+ if (rel.FromID == -1) && (rel.ToID == -1) {
+ // Now there is only a relation, which we do not allow
+ return nil, errors.New("Relation only queries are not supported")
+ }
+
+ var match, eConstraints, unwind, rConstraints string
+
+ // There is some duplicate code here below that could be omitted with extra if-statements, but that is something to do
+ // for a later time. Since this way it is easier to understand the flow of the code
+ // Removing the duplicate code here, probably more than triples the if-statements and is a puzzle for a later time (TODO)
+ if rel.ToID == -1 {
+ // There is no To, only a From
+ var eName string
+ var ent *entity.QueryEntityStruct
+
+ if rel.FromType == "entity" {
+
+ ent = JSONQuery.FindE(rel.ToID)
+ eName = fmt.Sprintf("e%v", ent.ID)
+
+ } else if rel.FromType == "groupBy" {
+ gb := JSONQuery.FindG(rel.FromID)
+ if gb.ByType == "relation" {
+ return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
+ }
+
+ ent = JSONQuery.FindE(gb.ByID)
+ // This is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
+ eName = fmt.Sprintf("e%v", ent.ID)
+ } else {
+ // Should never be reachable
+ return nil, errors.New("Invalid connection type to relation")
+ }
+
+ match = fmt.Sprintf("MATCH p%v = (%v:%v)-[:%v*%v..%v]-()\n", part.PartID, eName, ent.Name, rel.Name, rel.Depth.Min, rel.Depth.Max)
+
+ eConstraints = ""
+ newLineStatement := "\tWHERE"
+ for _, v := range ent.Constraints {
+ eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
+ newLineStatement = "\tAND"
+ }
+
+ // Add an IN clause, connecting the relation to the output of the groupby
+ if rel.FromType == "groupBy" {
+ gb := JSONQuery.FindG(rel.FromID)
+ inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eName, gb.ByAttribute, gb.AppliedModifier, gb.ByAttribute)
+ eConstraints += inConstraint
+ }
+
+ } else if rel.FromID == -1 {
+ var eName string
+ var ent *entity.QueryEntityStruct
+
+ if rel.ToType == "entity" {
+ ent = JSONQuery.FindE(rel.ToID)
+ eName = fmt.Sprintf("e%v", ent.ID)
+
+ } else if rel.ToType == "groupBy" {
+ gb := JSONQuery.FindG(rel.ToID)
+ if gb.ByType == "relation" {
+ return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
+ }
+
+ ent = JSONQuery.FindE(gb.ByID)
+ // This is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
+ eName = fmt.Sprintf("e%v", ent.ID)
+ } else {
+ // Should never be reachable
+ return nil, errors.New("Invalid connection type to relation")
+ }
+
+ match = fmt.Sprintf("MATCH p%v = ()-[:%v*%v..%v]-(%v:%v)\n", part.PartID, rel.Name, rel.Depth.Min, rel.Depth.Max, eName, ent.Name)
+
+ eConstraints = ""
+ newLineStatement := "\tWHERE"
+ for _, v := range ent.Constraints {
+ eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
+ newLineStatement = "\tAND"
+ }
+
+ // Add an IN clause, connecting the relation to the output of the groupby
+ if rel.ToType == "groupBy" {
+ gb := JSONQuery.FindG(rel.ToID)
+ inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eName, gb.ByAttribute, gb.AppliedModifier, gb.ByAttribute)
+ eConstraints += inConstraint
+ }
+
+ } else {
+ var eTName string
+ var entFrom *entity.QueryEntityStruct
+ var eFName string
+ var entTo *entity.QueryEntityStruct
+
+ // Check of what type the To is
+ if rel.ToType == "entity" {
+ entTo = JSONQuery.FindE(rel.ToID)
+ eTName = fmt.Sprintf("e%v", entTo.ID)
+
+ } else if rel.ToType == "groupBy" {
+ gb := JSONQuery.FindG(rel.ToID)
+ if gb.ByType == "relation" {
+ return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
+ }
+
+ entTo = JSONQuery.FindE(gb.ByID)
+ // this is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
+ eTName = fmt.Sprintf("e%v", entTo.ID)
+ } else {
+ // Should never be reachable
+ return nil, errors.New("Invalid connection type to relation")
+ }
+
+ // Check of what type the From is
+ if rel.FromType == "entity" {
+
+ entFrom = JSONQuery.FindE(rel.FromID)
+ eFName = fmt.Sprintf("e%v", entFrom.ID)
+
+ } else if rel.FromType == "groupBy" {
+ gb := JSONQuery.FindG(rel.FromID)
+ if gb.ByType == "relation" {
+ return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
+ }
+
+ entFrom = JSONQuery.FindE(gb.ByID)
+ // This is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
+ eFName = fmt.Sprintf("eg%v", entFrom.ID)
+ } else {
+ // Should never be reachable
+ return nil, errors.New("Invalid connection type to relation")
+ }
+
+ match = fmt.Sprintf("MATCH p%v = (%v:%v)-[:%v*%v..%v]-(%v:%v)\n", part.PartID, eFName, entFrom.Name, rel.Name, rel.Depth.Min, rel.Depth.Max, eTName, entTo.Name)
+
+ eConstraints = ""
+ newLineStatement := "\tWHERE"
+ for _, v := range entFrom.Constraints {
+ eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eFName, false))
+ newLineStatement = "\tAND"
+ }
+ for _, v := range entTo.Constraints {
+ eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eTName, false))
+ newLineStatement = "\tAND"
+ }
+
+ // Add an IN clause, connecting the relation to the output of the groupby
+ if rel.ToType == "groupBy" {
+ gb := JSONQuery.FindG(rel.ToID)
+ inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eTName, gb.ByAttribute, strings.Replace(eFName, "g", "", 1), gb.ByAttribute)
+ eConstraints += inConstraint
+ newLineStatement = "\tAND"
+ }
+
+ if rel.FromType == "groupBy" {
+ gb := JSONQuery.FindG(rel.FromID)
+ inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eFName, gb.ByAttribute, strings.Replace(eFName, "g", "", 1), gb.ByAttribute)
+ eConstraints += inConstraint
+ }
+ }
+
+ rName := fmt.Sprintf("r%v", part.QID)
+ unwind = fmt.Sprintf("UNWIND relationships(p%v) as %v \nWITH *\n", part.PartID, rName)
+
+ rConstraints = ""
+ newLineStatement := "\tWHERE"
+ for _, v := range rel.Constraints {
+ rConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, rName, false))
+ newLineStatement = "\tAND"
+ }
+
+ retString := match + eConstraints + unwind + rConstraints
+ return &retString, nil
+
+}
+
+// createGroupByCypher takes the json and a query part, finds the group by and converts it into cypher
+func createGroupByCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
+ groupBy := JSONQuery.FindG(part.QID)
+
+ gName := fmt.Sprintf("%v_%v", groupBy.AppliedModifier, groupBy.GroupAttribute)
+ by := fmt.Sprintf("%v%v.%v", string(groupBy.ByType[0]), groupBy.ByID, groupBy.ByAttribute)
+ byName := strings.Replace(by, ".", "_", 1)
+ group := fmt.Sprintf("%v%v.%v", string(groupBy.GroupType[0]), groupBy.GroupID, groupBy.GroupAttribute)
+
+ // If you do not use a *, then everything needs to be aliased
+ with := fmt.Sprintf("WITH %v AS %v, %v(%v) AS %v \n", by, byName, groupBy.AppliedModifier, group, gName)
+
+ gConstraints := ""
+ newLineStatement := "\tWHERE"
+ for _, v := range groupBy.Constraints {
+ gConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, gName, true))
+ newLineStatement = "\tAND"
+ }
+
+ retString := with + gConstraints
+ return &retString, nil
+}
diff --git a/cypher/convertQueryNew.go b/cypher/convertQueryNew.go
deleted file mode 100644
index 885e169..0000000
--- a/cypher/convertQueryNew.go
+++ /dev/null
@@ -1,614 +0,0 @@
-package cypher
-
-import (
- "errors"
- "fmt"
- "strings"
-
- "git.science.uu.nl/graphpolaris/query-conversion/entity"
-)
-
-// ConvertQuery2
-func (s *Service) ConvertQuery2(totalJSONQuery *entity.IncomingQueryJSON) (*string, error) {
- var finalCypher *string
-
- queryJSON := totalJSONQuery
-
- query, rest, isRest := checkForQueryCluster(queryJSON)
-
- if isRest {
- fmt.Println("Rest:")
- fmt.Println(rest)
-
- // If something needs to be done with other query cluster, then add code here
- }
-
- finalCypher, err := createCypher(query)
- if err != nil {
- return nil, err
- }
-
- return finalCypher, nil
-}
-
-// createCypher creates queries without the return statement, due to the possibility of multiple disconnected queries
-func createCypher(JSONQuery *entity.IncomingQueryJSON) (*string, error) {
-
- hierarchy, err := createQueryHierarchy(JSONQuery)
- if err != nil {
- //TODO
- return nil, errors.New("")
- }
-
- cypher, err := formQuery(JSONQuery, hierarchy)
- if err != nil {
- return nil, errors.New("Creation of query Cypher failed")
- }
-
- returnStatement, err := createReturnStatement(JSONQuery, hierarchy)
- if err != nil {
- return nil, errors.New("Creation of return Cypher failed")
- }
-
- finalCypher := *cypher + *returnStatement
-
- return &finalCypher, nil
-}
-
-// NOTE MOET MISSCHIEN ANDERS
-// createReturnStatement creates the final return statement, connecting all previous cypher together
-func createReturnStatement(JSONQuery *entity.IncomingQueryJSON, parts entity.Query) (*string, error) {
-
- var retStatement string
-
- // First check to see if the return is a table (due to a groupby at the end) or if it is nodelink data
- numOfParts := len(parts)
- if parts[numOfParts-1].QType == "groupBy" {
- // Return is a table
- groupBy := JSONQuery.FindG(parts[numOfParts-1].QID)
-
- gName := fmt.Sprintf("%v_%v", groupBy.AppliedModifier, groupBy.GroupAttribute)
- by := fmt.Sprintf("%v%v.%v", string(groupBy.ByType[0]), groupBy.ByID, groupBy.ByAttribute)
- byName := strings.Replace(by, ".", "_", 1)
-
- retStatement = fmt.Sprintf("RETURN %v, %v", byName, gName)
- } else {
- // Return is nodelink
- // Loop through the parts of the query from back to front
- retStatement = "RETURN "
- lineStart := ""
- for i := numOfParts - 1; i >= 0; i-- {
- part := parts[i]
- if part.QType == "relation" {
- rel := JSONQuery.FindR(part.QID)
- retStatement += fmt.Sprintf("%v r%v", lineStart, rel.ID)
- lineStart = ","
-
- if rel.FromID != -1 {
- if rel.FromType == "entity" {
-
- retStatement += fmt.Sprintf("%v e%v", lineStart, rel.FromID)
- } else {
- id := JSONQuery.FindG(rel.FromID).ByID
- retStatement += fmt.Sprintf("%v eg%v", lineStart, id)
- }
- }
-
- if rel.ToID != -1 {
- if rel.ToType == "entity" {
-
- retStatement += fmt.Sprintf("%v e%v", lineStart, rel.ToID)
- } else {
- id := JSONQuery.FindG(rel.ToID).ByID
- retStatement += fmt.Sprintf("%v eg%v", lineStart, id)
- }
- }
- } else if part.QType == "entity" {
- retStatement += fmt.Sprintf("%v e%v", lineStart, part.QID)
- break
-
- // Probably ends with a break to, since a single entity is always connected via an IN to a groupby? (maybe not in case of ONLY having an entity as the entire query)
- } else {
- // Then it is a groupby which must not be returned, thus the returns are done.
- break
- }
- }
- }
-
- retStatement = retStatement + "\n" + fmt.Sprintf("LIMIT %v", JSONQuery.Limit)
-
- return &retStatement, nil
-}
-
-func createQueryHierarchy(JSONQuery *entity.IncomingQueryJSON) (entity.Query, error) {
- // Pak de relations met de entities samen, en vorm groepjes van ent-rel-ent
- // Als A-rel-B-rel-C, dan wordt dat A-rel-B en B-rel-C, waarbij BC na AB moet komen, dus BC _depends_ on AB
- // Idee is dat je de hele lijst achterstevoren door kan lopen en dat je eerst een depend tegen komt en daarna het gene waarop gedepend wordt
-
- // ** HOUD NOG GEEN REKENING MET INS, MOET NOG WEL
- // maar is wat lastiger omdat dat wat extra checks vergt
-
- var parts entity.Query
- IDctr := 0
-
- // Add them all to query parts
- for _, rel := range JSONQuery.Relations {
- part := entity.QueryPart{
- QType: "relation",
- QID: rel.ID,
- PartID: IDctr,
- Dependencies: make([]int, 0),
- }
- parts = append(parts, part)
-
- IDctr++
-
- }
-
- for _, gb := range JSONQuery.GroupBys {
- part := entity.QueryPart{
- QType: "groupBy",
- QID: gb.ID,
- PartID: IDctr,
- Dependencies: make([]int, 0),
- }
- parts = append(parts, part)
-
- IDctr++
-
- }
-
- for _, ent := range JSONQuery.Entities {
-
- skip := true
- for _, con := range ent.Constraints {
- if con.InID != -1 {
- skip = false
- }
- }
-
- if skip {
- continue
- }
-
- part := entity.QueryPart{
- QType: "entity",
- QID: ent.ID,
- PartID: IDctr,
- Dependencies: make([]int, 0),
- }
- parts = append(parts, part)
-
- IDctr++
- }
-
- // Check dependencies in a nice O(n^2)
- for _, rel := range JSONQuery.Relations {
- if rel.FromID == -1 {
- continue
- }
-
- // Check the dependencies From - To
- for _, rela := range JSONQuery.Relations {
- if rela.ToID == -1 {
- continue
- }
-
- if rel.FromID == rela.ToID && rel.FromType == rela.ToType {
- part := parts.Find(rel.ID, "relation")
- part.Dependencies = append(part.Dependencies, parts.Find(rela.ID, "relation").PartID)
- }
- }
-
- if rel.ToID == -1 {
- continue
- }
-
- // Now for connections to group by's it doesnt matter if the GB is attached to the from or the to
- // The GB always has priority
- for _, gb := range JSONQuery.GroupBys {
- if (rel.FromID == gb.ID && rel.FromType == "groupBy") || (rel.ToID == gb.ID && rel.ToType == "groupBy") {
- part := parts.Find(rel.ID, "relation")
- gbID := parts.Find(gb.ID, "groupBy").PartID
- part.Dependencies = append(part.Dependencies, gbID)
- }
- }
- }
-
- // Same trick for group by's
- for _, gb := range JSONQuery.GroupBys {
- for _, rela := range JSONQuery.Relations {
- // Check if the gb is connected to the relation
- if (gb.ByID == rela.ID && gb.ByType == "relation") || // Is the By connected to a relation
- (gb.GroupID == rela.ID && gb.GroupType == "relation") || // is the Group connected to a relation
- (gb.ByID == rela.FromID && gb.ByType == rela.FromType) || // Is the by connected to an entity connected to the "From" of a relation
- (gb.ByID == rela.ToID && gb.ByType == rela.ToType) || // Is the by connected to an entity connected to the "To" of a relation
- (gb.GroupID == rela.FromID && gb.GroupType == rela.FromType) || // Is the group connected to an entity connected to the "From" of arelation
- (gb.GroupID == rela.ToID && gb.GroupType == rela.ToType) { // Is the group connected to an entity connected to the "To" of a relation
- part := parts.Find(gb.ID, "groupBy")
- part.Dependencies = append(part.Dependencies, parts.Find(rela.ID, "relation").PartID)
- }
- }
-
- // Not sure if this is even possible, but hey who knows
- // Check to see if the gb is connected to another gb
- for _, grb := range JSONQuery.GroupBys {
- if gb.ID == grb.ID {
- continue
- }
-
- if (gb.GroupID == grb.ID && gb.GroupType == "groupBy") || (gb.ByID == grb.ID && gb.ByType == "groupBy") {
- part := parts.Find(gb.ID, "groupBy")
- part.Dependencies = append(part.Dependencies, parts.Find(grb.ID, "groupBy").PartID)
- }
- }
- }
-
- for _, ent := range JSONQuery.Entities {
- for _, con := range ent.Constraints {
- if con.InID != -1 {
- part := parts.Find(ent.ID, "entity") // Should always be groupBy
- part.Dependencies = append(part.Dependencies, parts.Find(con.InID, con.InType).PartID)
- }
- }
-
- }
-
- // Now we have a directed graph, meaning we can use some topological sort (Kahn's algorithm)
- var sortedQuery entity.Query
- incomingEdges := make(map[int]int)
-
- // Set all to 0
- for _, p := range parts {
- incomingEdges[p.PartID] = 0
- }
-
- // Count the incoming edges (dependencies)
- for _, p := range parts {
- for _, dp := range p.Dependencies {
- incomingEdges[dp]++
- }
- }
-
- for { // While there is a someone where incomingEdges[someone] == 0
- part := entity.QueryPart{PartID: -1}
- // Select a node with no incoming edges
- for ID, edges := range incomingEdges {
- if edges == 0 {
- part = *parts.SelectByID(ID)
- }
- }
-
- // Check to see if there are parts withouth incoming edges left
- if part.PartID == -1 {
- break
- }
-
- // Remove it from the set
- incomingEdges[part.PartID] = -1
- sortedQuery = append(sortedQuery, part)
-
- // Decrease incoming edges of other parts
- for _, ID := range part.Dependencies {
- incomingEdges[ID]--
- }
- }
-
- // Now check for cycles in the graph
- partRemaining := false
- for _, edges := range incomingEdges {
- if edges != -1 {
- partRemaining = true
- }
- }
-
- if partRemaining {
- // Somehow there was a cycle in the query,
- return nil, errors.New("Cyclic query detected")
- }
-
- // Reverse the list
- retQuery := make([]entity.QueryPart, len(sortedQuery))
- for i := 0; i < len(sortedQuery); i++ {
- retQuery[i] = sortedQuery[len(sortedQuery)-i-1]
- }
-
- return retQuery, nil
-
- // ** HOUD NOG GEEN REKENING MET INS (van entities naar groupbys), MOET NOG WEL
- // maar is wat lastiger omdat dat wat extra checks vergt, alle code voor ins moet ook in de volgende functies worden gestopt
-
- // Maak van alle rels en gb's een query part
- // Loop door alle rels heen en kijk of hun FROM een TO is van een andere rel --> dependency
- // Als de from of de to een Group by is, dan is ie ook direct dependent
- // Als een GB aan een relation (A) zit, komen alle andere relations die aan A vastzitten ook eerst
-
- // ** Het geval van wanneer een entity vast zit aan een group by? via een IN?
-
- // Returned I guess een list van query parts met de dependencies naar beneden zodat je van boven naar beneden de lijst kan doorlopen
- // om de query te maken
-}
-
-func formQuery(JSONQuery *entity.IncomingQueryJSON, hierarchy entity.Query) (*string, error) {
-
- // ** NOTE: this does not create a return statement, that has yet to be made (which will also probably use the hierarchy)
-
- // Traverse through the hierarchy and for every entry create a part like:
- // Match (deel 1)
- // Constraints op entities
- // Unwind as r0
- // With *
- // Constraints op r0
- totalQuery := ""
-
- for _, entry := range hierarchy {
- var cypher *string
- var err error
-
- switch entry.QType {
- case "relation":
- cypher, err = createRelationCypher(JSONQuery, entry)
- if err != nil {
- return nil, err
- }
- break
- case "groupBy":
- cypher, err = createGroupByCypher(JSONQuery, entry)
- if err != nil {
- return nil, err
- }
-
- break
- case "entity":
- // This would be in case of an IN or if there was only 1 entity in the query builder
- cypher, err = createInCypher(JSONQuery, entry)
- if err != nil {
- return nil, err
- }
-
- break
- default:
- // Should never be reached
- return nil, errors.New("Invalid query pill type detected")
- }
-
- totalQuery += *cypher
- }
-
- return &totalQuery, nil
-}
-
-func createInCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
- ent := JSONQuery.FindE(part.QID)
- eName := fmt.Sprintf("e%v", ent.ID)
-
- match := fmt.Sprintf("MATCH (%v:%v)\n", eName, ent.Name)
- eConstraints := ""
- newLineStatement := "\tWHERE"
-
- for _, con := range ent.Constraints {
- if con.InID != -1 {
- gby := JSONQuery.FindG(con.InID) // Because this could only be on a groupby
- byName := fmt.Sprintf("%v%v", string(gby.ByType[0]), gby.ByID)
- eConstraints += fmt.Sprintf("%v %v.%v IN %v_%v\n", newLineStatement, eName, con.Attribute, byName, gby.ByAttribute)
- newLineStatement = "\tAND"
- }
- }
-
- for _, v := range ent.Constraints {
- if v.InID != -1 {
- continue
- }
- eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
- }
-
- with := "WITH *\n"
- retStatement := match + eConstraints + with
- return &retStatement, nil
-
- // Should be able to test multiple IN statements from one entity, not sure if that will ever happen (maybe needs to be tested)
-}
-
-// createRelationCypher takes the json and a query part, finds the necessary entities and converts it into cypher
-func createRelationCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
-
- rel := JSONQuery.FindR(part.QID)
-
- if (rel.FromID == -1) && (rel.ToID == -1) {
- // Now there is only a relation, which we do not allow
- return nil, errors.New("Relation only queries are not supported")
- }
-
- var match, eConstraints, unwind, rConstraints string
-
- // There is some duplicate code here below that could be omitted with extra if-statements, but that is something to do
- // for a later time. Since this way it is easier to understand the flow of the code
- if rel.ToID == -1 {
- // There is no To, only a From
- var eName string
- var ent *entity.QueryEntityStruct
-
- if rel.FromType == "entity" {
-
- ent = JSONQuery.FindE(rel.ToID)
- eName = fmt.Sprintf("e%v", ent.ID)
-
- } else if rel.FromType == "groupBy" {
- gb := JSONQuery.FindG(rel.FromID)
- if gb.ByType == "relation" {
- return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
- }
-
- ent = JSONQuery.FindE(gb.ByID)
- // this is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
- eName = fmt.Sprintf("e%v", ent.ID)
- } else {
- // Should never be reachable
- return nil, errors.New("Invalid connection type to relation")
- }
-
- match = fmt.Sprintf("MATCH p%v = (%v:%v)-[:%v*%v..%v]-()\n", part.PartID, eName, ent.Name, rel.Name, rel.Depth.Min, rel.Depth.Max)
-
- eConstraints = ""
- newLineStatement := "\tWHERE"
- for _, v := range ent.Constraints {
- eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
- newLineStatement = "\tAND"
- }
-
- // Add an IN clause, connecting the relation to the output of the groupby
- if rel.FromType == "groupBy" {
- gb := JSONQuery.FindG(rel.FromID)
- inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eName, gb.ByAttribute, gb.AppliedModifier, gb.ByAttribute)
- eConstraints += inConstraint
- }
-
- } else if rel.FromID == -1 {
- var eName string
- var ent *entity.QueryEntityStruct
-
- if rel.ToType == "entity" {
- ent = JSONQuery.FindE(rel.ToID)
- eName = fmt.Sprintf("e%v", ent.ID)
-
- } else if rel.ToType == "groupBy" {
- gb := JSONQuery.FindG(rel.ToID)
- if gb.ByType == "relation" {
- return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
- }
-
- ent = JSONQuery.FindE(gb.ByID)
- // this is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
- eName = fmt.Sprintf("e%v", ent.ID)
- } else {
- // Should never be reachable
- return nil, errors.New("Invalid connection type to relation")
- }
-
- match = fmt.Sprintf("MATCH p%v = ()-[:%v*%v..%v]-(%v:%v)\n", part.PartID, rel.Name, rel.Depth.Min, rel.Depth.Max, eName, ent.Name)
-
- eConstraints = ""
- newLineStatement := "\tWHERE"
- for _, v := range ent.Constraints {
- eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eName, false))
- newLineStatement = "\tAND"
- }
-
- // Add an IN clause, connecting the relation to the output of the groupby
- if rel.ToType == "groupBy" {
- gb := JSONQuery.FindG(rel.ToID)
- inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eName, gb.ByAttribute, gb.AppliedModifier, gb.ByAttribute)
- eConstraints += inConstraint
- }
-
- } else {
- var eTName string
- var entFrom *entity.QueryEntityStruct
- var eFName string
- var entTo *entity.QueryEntityStruct
-
- // Check of what type the To is
- if rel.ToType == "entity" {
- entTo = JSONQuery.FindE(rel.ToID)
- eTName = fmt.Sprintf("e%v", entTo.ID)
-
- } else if rel.ToType == "groupBy" {
- gb := JSONQuery.FindG(rel.ToID)
- if gb.ByType == "relation" {
- return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
- }
-
- entTo = JSONQuery.FindE(gb.ByID)
- // this is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
- eTName = fmt.Sprintf("e%v", entTo.ID)
- } else {
- // Should never be reachable
- return nil, errors.New("Invalid connection type to relation")
- }
-
- // Check of what type the From is
- if rel.FromType == "entity" {
-
- entFrom = JSONQuery.FindE(rel.FromID)
- eFName = fmt.Sprintf("e%v", entFrom.ID)
-
- } else if rel.FromType == "groupBy" {
- gb := JSONQuery.FindG(rel.FromID)
- if gb.ByType == "relation" {
- return nil, errors.New("Invalid query: cannot connect a relation to a group by that groups by another relation")
- }
-
- entFrom = JSONQuery.FindE(gb.ByID)
- // this is a sort of dummy variable, since it is not directly visible in the query, but it is definitely needed
- eFName = fmt.Sprintf("eg%v", entFrom.ID)
- } else {
- // Should never be reachable
- return nil, errors.New("Invalid connection type to relation")
- }
-
- match = fmt.Sprintf("MATCH p%v = (%v:%v)-[:%v*%v..%v]-(%v:%v)\n", part.PartID, eFName, entFrom.Name, rel.Name, rel.Depth.Min, rel.Depth.Max, eTName, entTo.Name)
-
- eConstraints = ""
- newLineStatement := "\tWHERE"
- for _, v := range entFrom.Constraints {
- eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eFName, false))
- newLineStatement = "\tAND"
- }
- for _, v := range entTo.Constraints {
- eConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, eTName, false))
- newLineStatement = "\tAND"
- }
-
- // Add an IN clause, connecting the relation to the output of the groupby
- if rel.ToType == "groupBy" {
- gb := JSONQuery.FindG(rel.ToID)
- inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eTName, gb.ByAttribute, strings.Replace(eFName, "g", "", 1), gb.ByAttribute)
- eConstraints += inConstraint
- newLineStatement = "\tAND"
- }
-
- if rel.FromType == "groupBy" {
- gb := JSONQuery.FindG(rel.FromID)
- inConstraint := fmt.Sprintf("%v %v.%v IN %v_%v \n", newLineStatement, eFName, gb.ByAttribute, strings.Replace(eFName, "g", "", 1), gb.ByAttribute)
- eConstraints += inConstraint
- }
- }
-
- rName := fmt.Sprintf("r%v", part.QID)
- unwind = fmt.Sprintf("UNWIND relationships(p%v) as %v \nWITH *\n", part.PartID, rName)
-
- rConstraints = ""
- newLineStatement := "\tWHERE"
- for _, v := range rel.Constraints {
- rConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, rName, false))
- newLineStatement = "\tAND"
- }
-
- retString := match + eConstraints + unwind + rConstraints
- return &retString, nil
-
-}
-
-// createGroupByCypher takes the json and a query part, finds the group by and converts it into cypher
-func createGroupByCypher(JSONQuery *entity.IncomingQueryJSON, part entity.QueryPart) (*string, error) {
- groupBy := JSONQuery.FindG(part.QID)
-
- gName := fmt.Sprintf("%v_%v", groupBy.AppliedModifier, groupBy.GroupAttribute)
- by := fmt.Sprintf("%v%v.%v", string(groupBy.ByType[0]), groupBy.ByID, groupBy.ByAttribute)
- byName := strings.Replace(by, ".", "_", 1)
- group := fmt.Sprintf("%v%v.%v", string(groupBy.GroupType[0]), groupBy.GroupID, groupBy.GroupAttribute)
-
- // If you do not use a *, then everything needs to be aliased
- with := fmt.Sprintf("WITH %v AS %v, %v(%v) AS %v \n", by, byName, groupBy.AppliedModifier, group, gName)
-
- // ** HOW TO ADRESS THE AGGREGATED VALUE?
- gConstraints := ""
- newLineStatement := "\tWHERE"
- for _, v := range groupBy.Constraints {
- gConstraints += fmt.Sprintf("%v %v \n", newLineStatement, *createConstraintBoolExpression(&v, gName, true))
- newLineStatement = "\tAND"
- }
-
- retString := with + gConstraints
- return &retString, nil
-}
diff --git a/cypher/convertQueryNew_test.go b/cypher/convertQueryNew_test.go
deleted file mode 100644
index 9a07ed8..0000000
--- a/cypher/convertQueryNew_test.go
+++ /dev/null
@@ -1,650 +0,0 @@
-package cypher
-
-import (
- "encoding/json"
- "fmt"
- "testing"
-
- "git.science.uu.nl/graphpolaris/query-conversion/entity"
-)
-
-func Test1(t *testing.T) {
- // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
- query := []byte(`{
- "databaseName": "Movies3",
- "return": {
- "entities": [
- 0,
- 1,
- 2
- ],
- "relations": [
- 0,
- 1
- ],
- "groupBys": [
- 0
- ]
- },
- "entities": [
- {
- "id": 0,
- "name": "Person",
- "constraints": [
- {
- "attribute": "name",
- "value": "Raymond Campbell",
- "dataType": "string",
- "matchType": "NEQ",
- "inID": -1,
- "inType": ""
- }
- ]
- },
- {
- "id": 1,
- "name": "Movie",
- "constraints": []
- },
- {
- "id": 2,
- "name": "Genre",
- "constraints": []
- }
- ],
- "relations": [
- {
- "id": 0,
- "name": "DIRECTED",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- },
- {
- "id": 1,
- "name": "IN_GENRE",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "groupBy",
- "fromID": 0,
- "toType": "entity",
- "toID": 2,
- "constraints": []
- }
- ],
- "groupBys": [
- {
- "id": 0,
- "groupType": "entity",
- "groupID": 0,
- "groupAttribute": "bornIn",
- "byType": "entity",
- "byID": 1,
- "byAttribute": "imdbId",
- "appliedModifier": "AVG",
- "relationID": 0,
- "constraints": []
- }
- ],
- "machineLearning": [],
- "limit": 5000
- }`)
-
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- // hierarchy, err := createQueryHierarchy(&JSONQuery)
- // if err != nil {
- // fmt.Println(err)
- // }
-
- // fmt.Println(hierarchy)
-
- s := NewService()
- cypher, err := s.ConvertQuery2(&JSONQuery)
- if err != nil {
- fmt.Println(err)
- }
-
- fmt.Println(*cypher)
-
- t.Fail()
-
-}
-func Test2(t *testing.T) {
- // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
- query := []byte(`{
- "databaseName": "TweedeKamer",
- "return": {
- "entities": [
- 0,
- 1,
- 2
- ],
- "relations": [
- 0,
- 1
- ]
- },
- "entities": [
- {
- "name": "parliament",
- "ID": 0,
- "constraints": [
- {
- "attribute": "name",
- "value": "Geert",
- "dataType": "string",
- "matchType": "contains"
- }
- ]
- },
- {
- "name": "parties",
- "ID": 1,
- "constraints": []
- },
- {
- "name": "resolutions",
- "ID": 2,
- "constraints": []
- }
- ],
- "relations": [
- {
- "ID": 0,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- },
- {
- "ID": 1,
- "name": "submits",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 2,
- "constraints": []
- }
- ],
- "groupBys": [],
- "machineLearning": [],
- "limit": 5000
- }
- `)
-
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- s := NewService()
- cypher, err := s.ConvertQuery2(&JSONQuery)
- if err != nil {
- fmt.Println(err)
- }
-
- fmt.Println(*cypher)
-
- t.Fail()
-
-}
-func Test3(t *testing.T) {
- // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
- query := []byte(`{
- "databaseName": "TweedeKamer",
- "return": {
- "entities": [
- 0,
- 1,
- 2,
- 3,
- 4
- ],
- "relations": [
- 0,
- 1,
- 2,
- 3
- ]
- },
- "entities": [
- {
- "name": "parliament",
- "ID": 0,
- "constraints": [
- {
- "attribute": "name",
- "value": "A",
- "dataType": "string",
- "matchType": "contains"
- }
- ]
- },
- {
- "name": "parties",
- "ID": 1,
- "constraints": [
- {
- "attribute": "seats",
- "value": "10",
- "dataType": "int",
- "matchType": "LT"
- }
- ]
- },
- {
- "name": "resolutions",
- "ID": 2,
- "constraints": [
- {
- "attribute": "date",
- "value": "mei",
- "dataType": "string",
- "matchType": "contains"
- }
- ]
- },
- {
- "name": "parliament",
- "ID": 3,
- "constraints": []
- },
- {
- "name": "parties",
- "ID": 4,
- "constraints": [
- {
- "attribute": "name",
- "value": "Volkspartij voor Vrijheid en Democratie",
- "dataType": "string",
- "matchType": "=="
- }
- ]
- }
- ],
- "relations": [
- {
- "ID": 0,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- },
- {
- "ID": 1,
- "name": "submits",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 2,
- "constraints": []
- },
- {
- "ID": 2,
- "name": "submits",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 3,
- "toType": "entity",
- "toID": 2,
- "constraints": []
- },
- {
- "ID": 3,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 3,
- "toType": "entity",
- "toID": 4,
- "constraints": []
- }
- ],
- "groupBys": [],
- "machineLearning": [],
- "limit": 5000
- }
-
- `)
-
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- s := NewService()
- cypher, err := s.ConvertQuery2(&JSONQuery)
- if err != nil {
- fmt.Println(err)
- }
-
- fmt.Println(*cypher)
-
- t.Fail()
-
-}
-
-func Test4(t *testing.T) {
- // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
- query := []byte(`{
- "return": {
- "entities": [
- 0,
- 1,
- 2,
- 3,
- 4,
- 5,
- 6,
- 7
- ],
- "relations": [
- 0,
- 1,
- 2,
- 3,
- 4,
- 5,
- 6
- ]
- },
- "entities": [
- {
- "name": "parliament",
- "ID": 0,
- "constraints": [
- {
- "attribute": "name",
- "value": "Geert",
- "dataType": "string",
- "matchType": "contains"
- }
- ]
- },
- {
- "name": "commissions",
- "ID": 1,
- "constraints": []
- },
- {
- "name": "parliament",
- "ID": 2,
- "constraints": []
- },
- {
- "name": "parties",
- "ID": 3,
- "constraints": [
- {
- "attribute": "seats",
- "value": "10",
- "dataType": "int",
- "matchType": "LT"
- }
- ]
- },
- {
- "name": "resolutions",
- "ID": 4,
- "constraints": [
- {
- "attribute": "date",
- "value": "mei",
- "dataType": "string",
- "matchType": "contains"
- }
- ]
- },
- {
- "name": "resolutions",
- "ID": 5,
- "constraints": []
- },
- {
- "name": "parties",
- "ID": 6,
- "constraints": []
- }
- ,
- {
- "name": "parliament",
- "ID": 7,
- "constraints": []
- }
-
- ],
- "groupBys": [],
- "relations": [
- {
- "ID": 0,
- "name": "part_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 0,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- },
- {
- "ID": 1,
- "name": "part_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 2,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- },
- {
- "ID": 2,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 2,
- "toType": "entity",
- "toID": 3,
- "constraints": []
- },
- {
- "ID": 3,
- "name": "submits",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 2,
- "toType": "entity",
- "toID": 4,
- "constraints": []
- },
- {
- "ID": 4,
- "name": "submits",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 0,
- "toType": "entity",
- "toID": 5,
- "constraints": []
- },
- {
- "ID": 5,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 0,
- "toType": "entity",
- "toID": 6,
- "constraints": []
- }
- ,
- {
- "ID": 6,
- "name": "member_of",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromId": 7,
- "toType": "entity",
- "toID": 6,
- "constraints": []
- }
- ],
- "machineLearning": [],
- "limit": 5000
- }
-
-
- `)
-
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- s := NewService()
- cypher, err := s.ConvertQuery2(&JSONQuery)
- if err != nil {
- fmt.Println(err)
- }
-
- fmt.Println(*cypher)
-
- t.Fail()
-
-}
-func Test5(t *testing.T) {
- // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
- query := []byte(`{
- "databaseName": "Movies3",
- "entities": [
- {
- "id": 0,
- "name": "Person",
- "constraints": []
- },
- {
- "id": 1,
- "name": "Movie",
- "constraints": []
- },
- {
- "id": 2,
- "name": "Person",
- "constraints": [
- {
- "attribute": "bornIn",
- "value": "",
- "dataType": "string",
- "matchType": "",
- "inID": 0,
- "inType": "groupBy"
- }
- ]
- }
- ],
- "relations": [
- {
- "id": 0,
- "name": "ACTED_IN",
- "depth": {
- "min": 1,
- "max": 1
- },
- "fromType": "entity",
- "fromID": 0,
- "toType": "entity",
- "toID": 1,
- "constraints": []
- }
- ],
- "groupBys": [
- {
- "id": 0,
- "groupType": "entity",
- "groupID": 1,
- "groupAttribute": "imdbRating",
- "byType": "entity",
- "byID": 0,
- "byAttribute": "bornIn",
- "appliedModifier": "AVG",
- "relationID": 0,
- "constraints": [
- {
- "attribute": "imdbRating",
- "value": "7.5",
- "dataType": "int",
- "matchType": "GT",
- "inID": -1,
- "inType": ""
- }
- ]
- }
- ],
- "machineLearning": [],
- "limit": 5000
- }
- `)
-
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- s := NewService()
- cypher, err := s.ConvertQuery2(&JSONQuery)
- if err != nil {
- fmt.Println(err)
- }
-
- fmt.Println(*cypher)
-
- t.Fail()
-
-}
diff --git a/cypher/convertQuery_test.go b/cypher/convertQuery_test.go
index 028455e..f1f148a 100644
--- a/cypher/convertQuery_test.go
+++ b/cypher/convertQuery_test.go
@@ -2,7 +2,7 @@ package cypher
import (
"encoding/json"
- "errors"
+ "fmt"
"strings"
"testing"
@@ -10,885 +10,746 @@ import (
"github.com/stretchr/testify/assert"
)
-func TestEmptyQueryConversion(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [],
- "relations": []
- },
- "entities": [],
- "relations": [],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- convertedResult, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.NoError(t, err)
-
- // Assert that the result and the expected result are the same
- correctConvertedResult := ``
- assert.Equal(t, correctConvertedResult, *convertedResult)
-}
-
-func TestEntityOneAttributeQuery(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
+// All these tests test the entire flow
+func Test1(t *testing.T) {
+ // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
query := []byte(`{
+ "databaseName": "Movies3",
"return": {
"entities": [
- 0
+ 0,
+ 1,
+ 2
+ ],
+ "relations": [
+ 0,
+ 1
],
- "relations": []
+ "groupBys": [
+ 0
+ ]
},
"entities": [
{
- "type": "airports",
+ "id": 0,
+ "name": "Person",
"constraints": [
- {
- "attribute": "state",
- "value": "HI",
- "dataType": "string",
- "matchType": "exact"
- }
+ {
+ "attribute": "name",
+ "value": "Raymond Campbell",
+ "dataType": "string",
+ "matchType": "NEQ",
+ "inID": -1,
+ "inType": ""
+ }
]
+ },
+ {
+ "id": 1,
+ "name": "Movie",
+ "constraints": []
+ },
+ {
+ "id": 2,
+ "name": "Genre",
+ "constraints": []
+ }
+ ],
+ "relations": [
+ {
+ "id": 0,
+ "name": "DIRECTED",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
+ },
+ {
+ "id": 1,
+ "name": "IN_GENRE",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "groupBy",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 2,
+ "constraints": []
+ }
+ ],
+ "groupBys": [
+ {
+ "id": 0,
+ "groupType": "entity",
+ "groupID": 0,
+ "groupAttribute": "bornIn",
+ "byType": "entity",
+ "byID": 1,
+ "byAttribute": "imdbId",
+ "appliedModifier": "AVG",
+ "relationID": 0,
+ "constraints": []
}
],
- "relations": [],
+ "machineLearning": [],
"limit": 5000
}`)
- // Unmarshall the incoming message into an IncomingJSONQuery object
var JSONQuery entity.IncomingQueryJSON
json.Unmarshal(query, &JSONQuery)
- convertedResult, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.NoError(t, err)
+ s := NewService()
+ cypher, err := s.ConvertQuery(&JSONQuery)
+ if err != nil {
+ fmt.Println(err)
+ }
+
+ answer := `MATCH p0 = (e0:Person)-[:DIRECTED*1..1]-(e1:Movie)
+ WHERE e0.name <> "Raymond Campbell"
+ UNWIND relationships(p0) as r0
+ WITH *
+ WITH e1.imdbId AS e1_imdbId, AVG(e0.bornIn) AS AVG_bornIn
+ MATCH p1 = (eg1:Movie)-[:IN_GENRE*1..1]-(e2:Genre)
+ WHERE eg1.imdbId IN e1_imdbId
+ UNWIND relationships(p1) as r1
+ WITH *
+ RETURN r1, eg1, e2
+ LIMIT 5000`
+
+ fmt.Println(*cypher)
+ trimmedCypher := strings.Replace(*cypher, "\n", "", -1)
+ trimmedCypher = strings.Replace(trimmedCypher, "\t", "", -1)
+
+ trimmedAnswer := strings.Replace(answer, "\n", "", -1)
+ trimmedAnswer = strings.Replace(trimmedAnswer, "\t", "", -1)
+
+ fmt.Println(*cypher)
+ assert.Equal(t, trimmedAnswer, trimmedAnswer)
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n0:airports)WHERE n0.state = "HI" RETURN n0`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
}
-
-func TestRelationWithConstraint(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
+func Test2(t *testing.T) {
+ // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
query := []byte(`{
+ "databaseName": "TweedeKamer",
"return": {
"entities": [
- 0
+ 0,
+ 1,
+ 2
],
"relations": [
- 0
+ 0,
+ 1
]
},
"entities": [
{
- "type": "airports",
+ "name": "parliament",
+ "ID": 0,
"constraints": [
{
- "attribute": "state",
- "value": "HI",
+ "attribute": "name",
+ "value": "Geert",
"dataType": "string",
- "matchType": "exact"
+ "matchType": "contains",
+ "inID": -1,
+ "inType": ""
}
]
+ },
+ {
+ "name": "parties",
+ "ID": 1,
+ "constraints": []
+ },
+ {
+ "name": "resolutions",
+ "ID": 2,
+ "constraints": []
}
],
"relations": [
{
- "type": "flights",
+ "ID": 0,
+ "name": "member_of",
"depth": {
"min": 1,
"max": 1
},
- "entityFrom": 0,
- "entityTo": -1,
- "constraints": [
- {
- "attribute": "Day",
- "value": "15",
- "dataType": "int",
- "matchType": "EQ"
- }
- ]
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
+ },
+ {
+ "ID": 1,
+ "name": "submits",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 2,
+ "constraints": []
}
],
+ "groupBys": [],
+ "machineLearning": [],
"limit": 5000
- }`)
+ }
+ `)
- // Unmarshall the incoming message into an IncomingJSONQuery object
var JSONQuery entity.IncomingQueryJSON
json.Unmarshal(query, &JSONQuery)
- convertedResult, err := service.ConvertQuery(&JSONQuery)
+ s := NewService()
+ cypher, err := s.ConvertQuery(&JSONQuery)
+ if err != nil {
+ fmt.Println(err)
+ }
- // Assert that there is no error
- assert.NoError(t, err)
+ answer := `MATCH p0 = (e0:parliament)-[:member_of*1..1]-(e1:parties)
+ WHERE e0.name CONTAINS "%Geert%"
+ UNWIND relationships(p0) as r0
+ WITH *
+ MATCH p1 = (e0:parliament)-[:submits*1..1]-(e2:resolutions)
+ WHERE e0.name CONTAINS "%Geert%"
+ UNWIND relationships(p1) as r1
+ WITH *
+ RETURN r1, e0, e2, r0, e0, e1
+ LIMIT 5000`
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n0:airports)WHERE n0.state = "HI" MATCH p0 = (n0)-[r0:flights*1..1]->()WHERE r0.Day = 15 RETURN n0,p0;`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
-}
+ fmt.Println(*cypher)
-// func TestModifierCountEntity(t *testing.T) {
-// // Setup for test
-// // Create query conversion service
-// service := NewService()
-
-// query := []byte(`{
-// "return": {
-// "entities": [
-// 0
-// ],
-// "relations": []
-// },
-// "entities": [
-// {
-// "type": "airports",
-// "constraints": [
-// {
-// "attribute": "state",
-// "value": "HI",
-// "dataType": "string",
-// "matchType": "exact"
-// }
-// ]
-// }
-// ],
-// "relations": [],
-// "limit": 5000,
-// "modifiers": [
-// {
-// "type": "COUNT",
-// "selectedType": "entity",
-// "id": 0,
-// "attributeIndex": -1
-// }
-// ]
-// }`)
-
-// // Unmarshall the incoming message into an IncomingJSONQuery object
-// var JSONQuery entity.IncomingQueryJSON
-// json.Unmarshal(query, &JSONQuery)
-
-// convertedResult, err := service.ConvertQuery(&JSONQuery)
-
-// // Assert that there is no error
-// assert.NoError(t, err)
-
-// // Assert that the result and the expected result are the same
-// correctConvertedResult := `LET n0 = (FOR x IN airports FILTER x.state == "HI" RETURN x)RETURN LENGTH (n0)`
-// cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
-// cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
-// assert.Equal(t, correctConvertedResult, cleanedResult)
-// }
-
-// func TestModifierCountEntityAttribute(t *testing.T) {
-// // Setup for test
-// // Create query conversion service
-// service := NewService()
-
-// query := []byte(`{
-// "return": {
-// "entities": [
-// 0
-// ],
-// "relations": []
-// },
-// "entities": [
-// {
-// "type": "airports",
-// "constraints": [
-// {
-// "attribute": "state",
-// "value": "HI",
-// "dataType": "string",
-// "matchType": "exact"
-// }
-// ]
-// }
-// ],
-// "relations": [],
-// "limit": 5000,
-// "modifiers": [
-// {
-// "type": "SUM",
-// "selectedType": "entity",
-// "id": 0,
-// "attributeIndex": 0
-// }
-// ]
-// }`)
-
-// // Unmarshall the incoming message into an IncomingJSONQuery object
-// var JSONQuery entity.IncomingQueryJSON
-// json.Unmarshal(query, &JSONQuery)
-
-// convertedResult, err := service.ConvertQuery(&JSONQuery)
-
-// // Assert that there is no error
-// assert.NoError(t, err)
-
-// // Assert that the result and the expected result are the same
-// correctConvertedResult := `LET n0 = (FOR x IN airports FILTER x.state == "HI" RETURN x)RETURN SUM (n0[*].state)`
-// cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
-// cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
-// assert.Equal(t, correctConvertedResult, cleanedResult)
-// }
-
-// func TestModifierCountRelation(t *testing.T) {
-// // Setup for test
-// // Create query conversion service
-// service := NewService()
-
-// query := []byte(`{
-// "return": {
-// "entities": [
-// 0
-// ],
-// "relations": [
-// 0
-// ]
-// },
-// "entities": [
-// {
-// "type": "airports",
-// "constraints": [
-// {
-// "attribute": "state",
-// "value": "HI",
-// "dataType": "string",
-// "matchType": "exact"
-// }
-// ]
-// }
-// ],
-// "relations": [
-// {
-// "type": "flights",
-// "depth": {
-// "min": 1,
-// "max": 1
-// },
-// "entityFrom": 0,
-// "entityTo": -1,
-// "constraints": [
-// {
-// "attribute": "Day",
-// "value": "15",
-// "dataType": "int",
-// "matchType": "EQ"
-// }
-// ]
-// }
-// ],
-// "limit": 5000,
-// "modifiers": [
-// {
-// "type": "COUNT",
-// "selectedType": "relation",
-// "id": 0,
-// "attributeIndex": -1
-// }
-// ]
-// }`)
-
-// // Unmarshall the incoming message into an IncomingJSONQuery object
-// var JSONQuery entity.IncomingQueryJSON
-// json.Unmarshal(query, &JSONQuery)
-
-// convertedResult, err := service.ConvertQuery(&JSONQuery)
-
-// // Assert that there is no error
-// assert.NoError(t, err)
-
-// // Assert that the result and the expected result are the same
-// correctConvertedResult := `LET n0 = (FOR x IN airports FILTER x.state == "HI" RETURN x)LET r0 = (FOR x IN n0 FOR v, e, p IN 1..1 OUTBOUND x flights OPTIONS { uniqueEdges: "path" }FILTER p.edges[*].Day ALL == 15 RETURN DISTINCT p )RETURN LENGTH (unique(r0[*].edges[**]))`
-// cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
-// cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
-// assert.Equal(t, correctConvertedResult, cleanedResult)
-// }
-// func TestModifierCountRelationAttribute(t *testing.T) {
-// // Setup for test
-// // Create query conversion service
-// service := NewService()
-
-// query := []byte(`{
-// "return": {
-// "entities": [
-// 0
-// ],
-// "relations": [
-// 0
-// ]
-// },
-// "entities": [
-// {
-// "type": "airports",
-// "constraints": [
-// {
-// "attribute": "state",
-// "value": "HI",
-// "dataType": "string",
-// "matchType": "exact"
-// }
-// ]
-// }
-// ],
-// "relations": [
-// {
-// "type": "flights",
-// "depth": {
-// "min": 1,
-// "max": 1
-// },
-// "entityFrom": 0,
-// "entityTo": -1,
-// "constraints": [
-// {
-// "attribute": "Day",
-// "value": "15",
-// "dataType": "int",
-// "matchType": "EQ"
-// }
-// ]
-// }
-// ],
-// "limit": 5000,
-// "modifiers": [
-// {
-// "type": "AVG",
-// "selectedType": "relation",
-// "id": 0,
-// "attributeIndex": 0
-// }
-// ]
-// }`)
-
-// // Unmarshall the incoming message into an IncomingJSONQuery object
-// var JSONQuery entity.IncomingQueryJSON
-// json.Unmarshal(query, &JSONQuery)
-
-// convertedResult, err := service.ConvertQuery(&JSONQuery)
-
-// // Assert that there is no error
-// assert.NoError(t, err)
-
-// // Assert that the result and the expected result are the same
-// correctConvertedResult := `LET n0 = (FOR x IN airports FILTER x.state == "HI" RETURN x)LET r0 = (FOR x IN n0 FOR v, e, p IN 1..1 OUTBOUND x flights OPTIONS { uniqueEdges: "path" }FILTER p.edges[*].Day ALL == 15 RETURN DISTINCT p )RETURN AVG (r0[*].edges[**].Day)`
-// cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
-// cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
-// assert.Equal(t, correctConvertedResult, cleanedResult)
-// }
-
-func TestRelationWithInOutConstraint(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
+ trimmedCypher := strings.Replace(*cypher, "\n", "", -1)
+ trimmedCypher = strings.Replace(trimmedCypher, "\t", "", -1)
+ trimmedAnswer := strings.Replace(answer, "\n", "", -1)
+ trimmedAnswer = strings.Replace(trimmedAnswer, "\t", "", -1)
+
+ fmt.Println(*cypher)
+ assert.Equal(t, trimmedAnswer, trimmedAnswer)
+
+}
+func Test3(t *testing.T) {
+ // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
query := []byte(`{
+ "databaseName": "TweedeKamer",
"return": {
"entities": [
0,
- 1
+ 1,
+ 2,
+ 3,
+ 4
],
"relations": [
- 0
+ 0,
+ 1,
+ 2,
+ 3
]
},
"entities": [
{
- "type": "airports",
+ "name": "parliament",
+ "ID": 0,
"constraints": [
{
- "attribute": "city",
- "value": "San Francisco",
+ "attribute": "name",
+ "value": "A",
"dataType": "string",
- "matchType": "exact"
+ "matchType": "contains",
+ "inID": -1,
+ "inType": ""
+ }
+ ]
+ },
+ {
+ "name": "parties",
+ "ID": 1,
+ "constraints": [
+ {
+ "attribute": "seats",
+ "value": "10",
+ "dataType": "int",
+ "matchType": "LT",
+ "inID": -1,
+ "inType": ""
}
]
},
{
- "type": "airports",
+ "name": "resolutions",
+ "ID": 2,
"constraints": [
{
- "attribute": "state",
- "value": "HI",
+ "attribute": "date",
+ "value": "mei",
"dataType": "string",
- "matchType": "exact"
+ "matchType": "contains",
+ "inID": -1,
+ "inType": ""
+ }
+ ]
+ },
+ {
+ "name": "parliament",
+ "ID": 3,
+ "constraints": []
+ },
+ {
+ "name": "parties",
+ "ID": 4,
+ "constraints": [
+ {
+ "attribute": "name",
+ "value": "Volkspartij voor Vrijheid en Democratie",
+ "dataType": "string",
+ "matchType": "==",
+ "inID": -1,
+ "inType": ""
}
]
}
],
"relations": [
{
- "type": "flights",
+ "ID": 0,
+ "name": "member_of",
"depth": {
"min": 1,
- "max": 3
+ "max": 1
},
- "entityFrom": 1,
- "entityTo": 0,
- "constraints": [
- {
- "attribute": "Day",
- "value": "15",
- "dataType": "int",
- "matchType": "EQ"
- }
- ]
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
+ },
+ {
+ "ID": 1,
+ "name": "submits",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 2,
+ "constraints": []
+ },
+ {
+ "ID": 2,
+ "name": "submits",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 3,
+ "toType": "entity",
+ "toID": 2,
+ "constraints": []
+ },
+ {
+ "ID": 3,
+ "name": "member_of",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 3,
+ "toType": "entity",
+ "toID": 4,
+ "constraints": []
}
],
+ "groupBys": [],
+ "machineLearning": [],
"limit": 5000
- }`)
+ }
+
+ `)
- // Unmarshall the incoming message into an IncomingJSONQuery object
var JSONQuery entity.IncomingQueryJSON
json.Unmarshal(query, &JSONQuery)
- convertedResult, err := service.ConvertQuery(&JSONQuery)
+ s := NewService()
+ cypher, err := s.ConvertQuery(&JSONQuery)
+ if err != nil {
+ fmt.Println(err)
+ }
+
+ answer := `MATCH p0 = (e0:parliament)-[:member_of*1..1]-(e1:parties)
+ WHERE e0.name CONTAINS "%A%"
+ AND e1.seats < 10
+ UNWIND relationships(p0) as r0
+ WITH *
+ MATCH p1 = (e0:parliament)-[:submits*1..1]-(e2:resolutions)
+ WHERE e0.name CONTAINS "%A%"
+ AND e2.date CONTAINS "%mei%"
+ UNWIND relationships(p1) as r1
+ WITH *
+ MATCH p2 = (e3:parliament)-[:submits*1..1]-(e2:resolutions)
+ WHERE e2.date CONTAINS "%mei%"
+ UNWIND relationships(p2) as r2
+ WITH *
+ MATCH p3 = (e3:parliament)-[:member_of*1..1]-(e4:parties)
+ WHERE e4.name = "Volkspartij voor Vrijheid en Democratie"
+ UNWIND relationships(p3) as r3
+ WITH *
+ RETURN r3, e3, e4, r2, e3, e2, r1, e0, e2, r0, e0, e1
+ LIMIT 5000`
+
+ fmt.Println(*cypher)
+
+ trimmedCypher := strings.Replace(*cypher, "\n", "", -1)
+ trimmedCypher = strings.Replace(trimmedCypher, "\t", "", -1)
+
+ trimmedAnswer := strings.Replace(answer, "\n", "", -1)
+ trimmedAnswer = strings.Replace(trimmedAnswer, "\t", "", -1)
+
+ fmt.Println(*cypher)
+ assert.Equal(t, trimmedAnswer, trimmedAnswer)
- // Assert that there is no error
- assert.NoError(t, err)
-
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n1:airports)WHERE n1.state = "HI" MATCH p0 = (n1)-[r0:flights*1..3]->(n0)WHERE r0.Day = 15 RETURN n1,n0,p0;`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
}
-func TestTwoRelations(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
+func Test4(t *testing.T) {
+ // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
query := []byte(`{
- "return": {
- "entities": [
- 0,
- 1,
- 2
- ],
- "relations": [
- 0,
- 1
- ]
- },
"entities": [
{
- "type": "airports",
+ "name": "parliament",
+ "ID": 0,
"constraints": [
{
- "attribute": "city",
- "value": "New York",
+ "attribute": "name",
+ "value": "Geert",
"dataType": "string",
- "matchType": "exact"
+ "matchType": "contains",
+ "inID": -1,
+ "inType": ""
}
]
},
{
- "type": "airports",
+ "name": "commissions",
+ "ID": 1,
+ "constraints": []
+ },
+ {
+ "name": "parliament",
+ "ID": 2,
+ "constraints": []
+ },
+ {
+ "name": "parties",
+ "ID": 3,
"constraints": [
{
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
+ "attribute": "seats",
+ "value": "10",
+ "dataType": "int",
+ "matchType": "LT",
+ "inID": -1,
+ "inType": ""
}
]
},
{
- "type": "airports",
+ "name": "resolutions",
+ "ID": 4,
"constraints": [
{
- "attribute": "state",
- "value": "HI",
+ "attribute": "date",
+ "value": "mei",
"dataType": "string",
- "matchType": "exact"
+ "matchType": "contains",
+ "inID": -1,
+ "inType": ""
}
]
+ },
+ {
+ "name": "resolutions",
+ "ID": 5,
+ "constraints": []
+ },
+ {
+ "name": "parties",
+ "ID": 6,
+ "constraints": []
}
+ ,
+ {
+ "name": "parliament",
+ "ID": 7,
+ "constraints": []
+ }
+
],
+ "groupBys": [],
"relations": [
{
- "type": "flights",
+ "ID": 0,
+ "name": "part_of",
"depth": {
"min": 1,
- "max": 3
+ "max": 1
},
- "entityFrom": 2,
- "entityTo": 1,
- "constraints": [
- {
- "attribute": "Day",
- "value": "15",
- "dataType": "int",
- "matchType": "EQ"
- }
- ]
+ "fromType": "entity",
+ "fromId": 0,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
+ },
+ {
+ "ID": 1,
+ "name": "part_of",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromId": 2,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
},
{
- "type": "flights",
+ "ID": 2,
+ "name": "member_of",
"depth": {
"min": 1,
"max": 1
},
- "entityFrom": 0,
- "entityTo": -1,
+ "fromType": "entity",
+ "fromId": 2,
+ "toType": "entity",
+ "toID": 3,
+ "constraints": []
+ },
+ {
+ "ID": 3,
+ "name": "submits",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromId": 2,
+ "toType": "entity",
+ "toID": 4,
+ "constraints": []
+ },
+ {
+ "ID": 4,
+ "name": "submits",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromId": 0,
+ "toType": "entity",
+ "toID": 5,
+ "constraints": []
+ },
+ {
+ "ID": 5,
+ "name": "member_of",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromId": 0,
+ "toType": "entity",
+ "toID": 6,
+ "constraints": []
+ }
+ ,
+ {
+ "ID": 6,
+ "name": "member_of",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromId": 7,
+ "toType": "entity",
+ "toID": 6,
"constraints": []
}
],
+ "machineLearning": [],
"limit": 5000
- }`)
+ }
+ `)
- // Unmarshall the incoming message into an IncomingJSONQuery object
var JSONQuery entity.IncomingQueryJSON
json.Unmarshal(query, &JSONQuery)
- convertedResult, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.NoError(t, err)
+ s := NewService()
+ cypher, err := s.ConvertQuery(&JSONQuery)
+ if err != nil {
+ fmt.Println(err)
+ }
+
+ answer := `MATCH p2 = (e2:parliament)-[:member_of*1..1]-(e3:parties)
+ WHERE e3.seats < 10
+ UNWIND relationships(p2) as r2
+ WITH *
+ MATCH p3 = (e2:parliament)-[:submits*1..1]-(e4:resolutions)
+ WHERE e4.date CONTAINS "%mei%"
+ UNWIND relationships(p3) as r3
+ WITH *
+ MATCH p6 = (e7:parliament)-[:member_of*1..1]-(e6:parties)
+ UNWIND relationships(p6) as r6
+ WITH *
+ MATCH p4 = (e0:parliament)-[:submits*1..1]-(e5:resolutions)
+ WHERE e0.name CONTAINS "%%Geert%"
+ UNWIND relationships(p4) as r4
+ WITH *
+ MATCH p0 = (e0:parliament)-[:part_of*1..1]-(e1:commissions)
+ WHERE e0.name CONTAINS "%%Geert%"
+ UNWIND relationships(p0) as r0
+ WITH *
+ MATCH p5 = (e0:parliament)-[:member_of*1..1]-(e6:parties)
+ WHERE e0.name CONTAINS "%%Geert%"
+ UNWIND relationships(p5) as r5
+ WITH *
+ MATCH p1 = (e2:parliament)-[:part_of*1..1]-(e1:commissions)
+ UNWIND relationships(p1) as r1
+ WITH *
+ RETURN r1, e2, e1, r5, e0, e6, r0, e0, e1, r4, e0, e5, r6, e7, e6, r3, e2, e4, r2, e2, e3
+ LIMIT 5000`
+
+ fmt.Println(*cypher)
+ trimmedCypher := strings.Replace(*cypher, "\n", "", -1)
+ trimmedCypher = strings.Replace(trimmedCypher, "\t", "", -1)
+
+ trimmedAnswer := strings.Replace(answer, "\n", "", -1)
+ trimmedAnswer = strings.Replace(trimmedAnswer, "\t", "", -1)
+
+ fmt.Println(*cypher)
+ assert.Equal(t, trimmedAnswer, trimmedAnswer)
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n2:airports)WHERE n2.state = "HI" MATCH p0 = (n2)-[r0:flights*1..3]->(n1)WHERE r0.Day = 15 RETURN n2,n1,p0;MATCH (n0:airports)WHERE n0.city = "New York" MATCH p0 = (n0)-[r0:flights*1..1]->()RETURN n0,p0;`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
}
-
-func TestRelationWithOnlyToNode(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [
- 0
- ],
- "relations": [
- 0
- ]
- },
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "relations": [
- {
- "type": "flights",
- "depth": {
- "min": 1,
- "max": 1
- },
- "entityFrom": -1,
- "entityTo": 0,
- "constraints": []
- }
- ],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- convertedResult, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.NoError(t, err)
-
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n0:airports)WHERE n0.city = "San Francisco" MATCH p0 = (n0)-[r0:flights*1..1]->()RETURN n0,p0;`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
-}
-
-func TestTooManyReturnEntities(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
+func Test5(t *testing.T) {
+ // Works, but, the AVG function is applied to a string, so that doesnt work, but the translation does :D
query := []byte(`{
- "return": {
- "entities": [
- 0,
- 1,
- 2
- ],
- "relations": [
- 0
- ]
+ "databaseName": "Movies3",
+ "entities": [
+ {
+ "id": 0,
+ "name": "Person",
+ "constraints": []
},
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "relations": [
- {
- "type": "flights",
- "depth": {
- "min": 1,
- "max": 1
- },
- "entityFrom": -1,
- "entityTo": 0,
- "constraints": []
- }
- ],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- _, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.Equal(t, errors.New("non-existing entity referenced in return"), err)
-}
-
-func TestTooManyReturnRelations(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [
- 0
- ],
- "relations": [
- 0,
- 1,
- 2
- ]
+ {
+ "id": 1,
+ "name": "Movie",
+ "constraints": []
},
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "relations": [
- {
- "type": "flights",
- "depth": {
- "min": 1,
- "max": 1
- },
- "entityFrom": -1,
- "entityTo": 0,
- "constraints": []
- }
- ],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- _, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.Equal(t, errors.New("non-existing relation referenced in return"), err)
-}
-
-func TestNegativeReturnEntities(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [
- 0,
- -1
- ],
- "relations": [
- 0,
- 1,
- 2
+ {
+ "id": 2,
+ "name": "Person",
+ "constraints": [
+ {
+ "attribute": "bornIn",
+ "value": "",
+ "dataType": "string",
+ "matchType": "",
+ "inID": 0,
+ "inType": "groupBy"
+ }
]
- },
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "relations": [
- {
- "type": "flights",
- "depth": {
- "min": 1,
- "max": 1
- },
- "entityFrom": -1,
- "entityTo": 0,
- "constraints": []
- }
- ],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
-
- _, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.Equal(t, errors.New("non-existing entity referenced in return"), err)
-}
-
-func TestNoRelationsField(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [
- 0
+ }
+ ],
+ "relations": [
+ {
+ "id": 0,
+ "name": "ACTED_IN",
+ "depth": {
+ "min": 1,
+ "max": 1
+ },
+ "fromType": "entity",
+ "fromID": 0,
+ "toType": "entity",
+ "toID": 1,
+ "constraints": []
+ }
+ ],
+ "groupBys": [
+ {
+ "id": 0,
+ "groupType": "entity",
+ "groupID": 1,
+ "groupAttribute": "imdbRating",
+ "byType": "entity",
+ "byID": 0,
+ "byAttribute": "bornIn",
+ "appliedModifier": "AVG",
+ "relationID": 0,
+ "constraints": [
+ {
+ "attribute": "imdbRating",
+ "value": "7.5",
+ "dataType": "int",
+ "matchType": "GT",
+ "inID": -1,
+ "inType": ""
+ }
]
- },
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "limit": 5000
- }`)
+ }
+ ],
+ "machineLearning": [],
+ "limit": 5000
+ }
+ `)
+
+ answer := `MATCH p0 = (e0:Person)-[:ACTED_IN*1..1]-(e1:Movie)
+ UNWIND relationships(p0) as r0
+ WITH *
+ WITH e0.bornIn AS e0_bornIn, AVG(e1.imdbRating) AS AVG_imdbRating
+ WHERE AVG_imdbRating > 7.5
+ MATCH (e2:Person)
+ WHERE e2.bornIn IN e0_bornIn
+ WITH *
+ RETURN e2
+ LIMIT 5000`
- // Unmarshall the incoming message into an IncomingJSONQuery object
var JSONQuery entity.IncomingQueryJSON
json.Unmarshal(query, &JSONQuery)
- convertedResult, err := service.ConvertQuery(&JSONQuery)
-
- // Assert that there is no error
- assert.NoError(t, err)
+ s := NewService()
+ cypher, err := s.ConvertQuery(&JSONQuery)
+ if err != nil {
+ fmt.Println(err)
+ }
- // Assert that the result and the expected result are the same
- correctConvertedResult := `MATCH (n0:airports)WHERE n0.city = "San Francisco" RETURN n0`
- cleanedResult := strings.ReplaceAll(*convertedResult, "\n", "")
- cleanedResult = strings.ReplaceAll(cleanedResult, "\t", "")
- assert.Equal(t, correctConvertedResult, cleanedResult)
-}
+ trimmedCypher := strings.Replace(*cypher, "\n", "", -1)
+ trimmedCypher = strings.Replace(trimmedCypher, "\t", "", -1)
-func TestEntityFromLowerThanNegativeOneInRelation(t *testing.T) {
- // Setup for test
- // Create query conversion service
- service := NewService()
-
- query := []byte(`{
- "return": {
- "entities": [
- 0
- ],
- "relations": [
- 0
- ]
- },
- "entities": [
- {
- "type": "airports",
- "constraints": [
- {
- "attribute": "city",
- "value": "San Francisco",
- "dataType": "string",
- "matchType": "exact"
- }
- ]
- }
- ],
- "relations": [
- {
- "type": "flights",
- "depth": {
- "min": 1,
- "max": 1
- },
- "entityFrom": -4,
- "entityTo": 0,
- "constraints": []
- }
- ],
- "limit": 5000
- }`)
-
- // Unmarshall the incoming message into an IncomingJSONQuery object
- var JSONQuery entity.IncomingQueryJSON
- json.Unmarshal(query, &JSONQuery)
+ trimmedAnswer := strings.Replace(answer, "\n", "", -1)
+ trimmedAnswer = strings.Replace(trimmedAnswer, "\t", "", -1)
- _, err := service.ConvertQuery(&JSONQuery)
+ fmt.Println(*cypher)
+ assert.Equal(t, trimmedAnswer, trimmedAnswer)
- // Assert that there is no error
- assert.NoError(t, err)
}
diff --git a/cypher/healthChecks.go b/cypher/healthChecks.go
index 03466d4..1504b11 100644
--- a/cypher/healthChecks.go
+++ b/cypher/healthChecks.go
@@ -10,13 +10,8 @@ import (
// Maybe also delete floating pills that have no connection (but that is a different function)
func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.IncomingQueryJSON, *entity.IncomingQueryJSON, bool) {
- // Notes naar moizelf: alle pills die dingen aan elkaar verbinden zijn relations en group bys, filter lijken 'op' een lijntje te leven, maar niet als schakel te dienen
- // Dit zou recursief kunnen: vind een cluster in de json, haal alles uit de json dat verbonden zit aan die cluster, voer de functie opnieuw uit op het restand
-
- cluster := make(map[string]bool) // aka een set (entities e0 e1 e2, relations r0 .., groub by g0 ..)
-
- // Dit is het startpunt van de cluster, vrij veel if elses ivm half afgemaakte queries
- // Lots of existance checks
+ // cluster is a set for all pills (entities e0 e1 e2, relations r0 .., groub by g0 ..)
+ cluster := make(map[string]bool)
if len(JSONQuery.Relations) > 0 {
rel := fmt.Sprintf("r%v", JSONQuery.Relations[0].ID)
@@ -38,7 +33,7 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
gb := fmt.Sprintf("g%v", JSONQuery.GroupBys[0].ID)
cluster[gb] = true
- // TODO: Wat te doen als de groupby niet goed is aangesloten, want dat crasht ie nogal atm
+ // TODO: Does not check if the groupby is properly connected
group := fmt.Sprintf("%v%v", string(JSONQuery.GroupBys[0].GroupType[0]), JSONQuery.GroupBys[0].GroupID)
cluster[group] = true
@@ -46,27 +41,22 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
cluster[by] = true
} else {
+ // If there is no relation or groupby then there is no query cluster atm
+ // Needs to change when the summary pill is introduced
return nil, nil, false
}
- // Relation toevoegen aan de map
- // Is er geen relation doe dan groupby
- // is die er ook niet dan rip
for i := 0; i < 100; i++ {
stop := true
- // kijk langs alle relations en group bys of ie verbonden is aan de cluster en nog niet in de set zit
- // Is dat zo run m opnieuw en kijk of daar weer dingen aan verbonden zijn
+ // Iteratively check to see if something is connected to the cluster
+ // It should have skips for when something has already been added to the cluster, but due to complex connections (like an IN or groupby attached to a relation)
+ // It is easier to just try everything everytime (and its computationally insignificant)
+ // The loop stops when nothing was added for a round
for _, rel := range JSONQuery.Relations {
- // check of de rel er al in zit, dan kan ie geskipped worden
- // zo nee kijk of een van de entities of group by's erin zit, dan is deze dus verbonden
rela := fmt.Sprintf("r%v", rel.ID)
- if cluster[rela] {
- // If it is already in the cluster then we dont care
- continue
- }
partOfCluster := false
// Now comes the check to see if one of its endpoints is in the cluster, meaning everything is in the cluster
@@ -105,9 +95,6 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
// Check to see if an entity is connected to the cluster via an 'IN'
for _, ent := range JSONQuery.Entities {
self := fmt.Sprintf("e%v", ent.ID)
- if cluster[self] {
- continue
- }
for _, con := range ent.Constraints {
if con.InID != -1 {
@@ -125,10 +112,6 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
for _, gb := range JSONQuery.GroupBys {
gby := fmt.Sprintf("g%v", gb.ID)
- if cluster[gby] {
- continue
- }
-
// It should have been checked that the connections of the group by are valid, since a group by must have all connections filled (in contrary of a relation)
group := fmt.Sprintf("%v%v", string(gb.GroupType[0]), gb.GroupID)
@@ -143,9 +126,6 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
}
- // ** then for modifiers? although modifiers havent changed yet, since their results must also be used in queries
- // Modifiers will change, so that is a problem for later
-
if stop {
// No new entities were added to the cluster, thus it is finished
break
@@ -193,12 +173,5 @@ func checkForQueryCluster(JSONQuery *entity.IncomingQueryJSON) (*entity.Incoming
}
}
- // ** Loop through modifiers
-
return &clusterJSON, &restJSON, isRest
-
- // Nadat cluster is gevonden: maak twee nieuwe jsons aan: cluster en rest
- // Loop door de OG json en voeg alles aan of de cluster of de rest toe
- // Return cluster, rest en een bool die zegt of er een cluster is
- // Wss is het in 99% van de gevallen maar 1 cluster of een cluster met een verdwaalde node, maar toch
}
--
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