diff --git a/libs/shared/data-access/store/src/lib/hooks.ts b/libs/shared/data-access/store/src/lib/hooks.ts
index 9ab46c395fdc6c697ad35d1363ac4c1c16cbb39b..df0faef46e155463bea444790b3ba91dcc076b76 100644
--- a/libs/shared/data-access/store/src/lib/hooks.ts
+++ b/libs/shared/data-access/store/src/lib/hooks.ts
@@ -1,5 +1,6 @@
import { TypedUseSelectorHook, useDispatch, useSelector } from 'react-redux';
import { selectGraphQueryResult } from './graphQueryResultSlice';
+import { selectSchema } from './schemaSlice';
import type { RootState, AppDispatch } from './store';
// Use throughout your app instead of plain `useDispatch` and `useSelector`
@@ -8,3 +9,6 @@ export const useAppSelector: TypedUseSelectorHook<RootState> = useSelector;
// Gives the graphQueryResult from the store
export const useGraphQueryResult = () => useAppSelector(selectGraphQueryResult);
+
+// Gives the schema form the store (as a graphology object)
+export const useSchema = () => useAppSelector(selectSchema);
diff --git a/libs/shared/data-access/store/src/lib/schemaSlice.ts b/libs/shared/data-access/store/src/lib/schemaSlice.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a8a22e05b4515e1bbdd1462928ef672d67b97dcd
--- /dev/null
+++ b/libs/shared/data-access/store/src/lib/schemaSlice.ts
@@ -0,0 +1,73 @@
+import { createSlice, PayloadAction } from '@reduxjs/toolkit';
+import type { RootState } from './store';
+import Graph, { DirectedGraph } from 'graphology';
+
+/*************** schema format from the backend *************** */
+// TODO: should probably not live here
+/** Schema type, consist of nodes and edges */
+export type SchemaFromBackend = {
+ edges: Edge[];
+ nodes: Node[];
+};
+
+/** Attribute type, consist of a name */
+export type Attribute = {
+ name: string;
+ type: 'string' | 'int' | 'bool' | 'float';
+};
+
+/** Node type, consist of a name and a list of attributes */
+export type Node = {
+ name: string;
+ attributes: Attribute[];
+};
+
+/** Edge type, consist of a name, start point, end point and a list of attributes */
+export type Edge = {
+ name: string;
+ to: string;
+ from: string;
+ collection: string;
+ attributes: Attribute[];
+};
+/**************************************************************** */
+
+// Define the initial state using that type
+export const initialState = {
+ graphologySerialized: new Graph().export(),
+};
+
+export const schemaSlice = createSlice({
+ name: 'schema',
+ // `createSlice` will infer the state type from the `initialState` argument
+ initialState,
+ reducers: {
+ readInSchemaFromBackend: (
+ state,
+ action: PayloadAction<SchemaFromBackend>
+ ) => {
+ const { nodes, edges } = action.payload;
+ // Instantiate a directed graph that allows self loops and parallel edges
+ const schema = new DirectedGraph({ allowSelfLoops: true, multi: true });
+ nodes.forEach((node) => {
+ schema.addNode(node.name, { attributes: node.attributes });
+ });
+
+ edges.forEach((edge) =>
+ schema.addDirectedEdgeWithKey(edge.name, edge.from, edge.to, {
+ collection: edge.collection,
+ })
+ );
+
+ state.graphologySerialized = schema.export();
+ },
+ },
+});
+
+export const { readInSchemaFromBackend } = schemaSlice.actions;
+
+// Select the schema and convert it to a graphology object
+export const selectSchema = (state: RootState) =>
+ Graph.from(state.schema.graphologySerialized);
+
+export default schemaSlice.reducer;
diff --git a/libs/shared/data-access/store/src/lib/store.ts b/libs/shared/data-access/store/src/lib/store.ts
index 89673e6c1470b47f3b84cbbc8410614aca1fbbc5..c4a617bc4931f87d2811f8a95a027c10d0faee8b 100644
--- a/libs/shared/data-access/store/src/lib/store.ts
+++ b/libs/shared/data-access/store/src/lib/store.ts
@@ -1,9 +1,11 @@
import { configureStore } from '@reduxjs/toolkit';
import graphQueryResultSlice from './graphQueryResultSlice';
+import schemaSlice from './schemaSlice';
export const store = configureStore({
reducer: {
graphQueryResult: graphQueryResultSlice,
+ schema: schemaSlice,
},
});
diff --git a/package.json b/package.json
index 98b1999355025e2ce0875f4f3e8b20eceba073ae..64fe528c6b0be6c11047b069b44da5c20b9eb73d 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,8 @@
"@types/react-grid-layout": "^1.3.0",
"@types/styled-components": "^5.1.21",
"core-js": "^3.6.5",
+ "graphology": "^0.23.2",
+ "graphology-types": "^0.23.0",
"react": "17.0.2",
"react-dom": "17.0.2",
"react-grid-layout": "^1.3.3",
diff --git a/yarn.lock b/yarn.lock
index fc458d50301af293f8ac085e2bb3424eafc557b1..948c5e10973c321308c4797e1bfc37117c2868d6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8304,7 +8304,7 @@ eventemitter3@^4.0.0, eventemitter3@^4.0.4:
resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
-events@^3.0.0, events@^3.2.0:
+events@^3.0.0, events@^3.2.0, events@^3.3.0:
version "3.3.0"
resolved "https://registry.yarnpkg.com/events/-/events-3.3.0.tgz#31a95ad0a924e2d2c419a813aeb2c4e878ea7400"
integrity sha512-mQw+2fkQbALzQ7V0MY0IqdnXNOeTtP4r0lN9z7AAawCXgqea7bDii20AYrIBrFd/Hx0M2Ocz6S111CaFkUcb0Q==
@@ -9326,6 +9326,19 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2, graceful-fs@^4.1.6
resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.9.tgz#041b05df45755e587a24942279b9d113146e1c96"
integrity sha512-NtNxqUcXgpW2iMrfqSfR73Glt39K+BLwWsPs94yR63v45T0Wbej7eRmL5cWfwEgqXnmjQp3zaJTshdRW/qC2ZQ==
+graphology-types@^0.23.0:
+ version "0.23.0"
+ resolved "https://registry.yarnpkg.com/graphology-types/-/graphology-types-0.23.0.tgz#76a0564baf31891044a7b0cc6cd028810541bb7a"
+ integrity sha512-6Je1NWU3el7YmybAhRzrOEi79Blhx05EU3wGUCvP5ikaxRXEflrW/5unfw5q/wqfwjryM9tcwUv4M7TZ8yTBYQ==
+
+graphology@^0.23.2:
+ version "0.23.2"
+ resolved "https://registry.yarnpkg.com/graphology/-/graphology-0.23.2.tgz#b09a33a9408a7615c3c9cff98e7404cc70a21820"
+ integrity sha512-RHcLpAP4M+KPShLQEvgkT1Y4vxl+FFbmmy3D0mupO+VXIuYC8zdmMcHs40D9m3mmN067zGS+lUaHjDq06Td7PQ==
+ dependencies:
+ events "^3.3.0"
+ obliterator "^2.0.0"
+
handle-thing@^2.0.0:
version "2.0.1"
resolved "https://registry.yarnpkg.com/handle-thing/-/handle-thing-2.0.1.tgz#857f79ce359580c340d43081cc648970d0bb234e"
@@ -12427,6 +12440,11 @@ objectorarray@^1.0.5:
resolved "https://registry.yarnpkg.com/objectorarray/-/objectorarray-1.0.5.tgz#2c05248bbefabd8f43ad13b41085951aac5e68a5"
integrity sha512-eJJDYkhJFFbBBAxeh8xW+weHlkI28n2ZdQV/J/DNfWfSKlGEf2xcfAbZTv3riEXHAhL9SVOTs2pRmXiSTf78xg==
+obliterator@^2.0.0:
+ version "2.0.1"
+ resolved "https://registry.yarnpkg.com/obliterator/-/obliterator-2.0.1.tgz#fbdd873bf39fc4f365a53b1fc86617a22526987c"
+ integrity sha512-XnkiCrrBcIZQitJPAI36mrrpEUvatbte8hLcTcQwKA1v9NkCKasSi+UAguLsLDs/out7MoRzAlmz7VXvY6ph6w==
+
obuf@^1.0.0, obuf@^1.1.2:
version "1.1.2"
resolved "https://registry.yarnpkg.com/obuf/-/obuf-1.1.2.tgz#09bea3343d41859ebd446292d11c9d4db619084e"