7.x

.changeset/thick-dogs-provide.md

@@ -0,0 +1,5 @@
+---
+"@neo4j/graphql": major
+---
+
+When performing a `connect` operation, new relationships are always created.

packages/graphql/src/translate/create-connect-and-params.test.ts

@@ -138,7 +138,7 @@ describe("createConnectAndParams", () => {
             			WITH connectedNodes, parentNodes
             			UNWIND parentNodes as this
             			UNWIND connectedNodes as this0_node
-            			MERGE (this)-[:\`SIMILAR\`]->(this0_node)
+            			CREATE (this)-[:\`SIMILAR\`]->(this0_node)
             		}
             	}
             WITH this, this0_node
@@ -153,7 +153,7 @@ describe("createConnectAndParams", () => {
             			WITH connectedNodes, parentNodes
             			UNWIND parentNodes as this0_node
             			UNWIND connectedNodes as this0_node_similarMovies0_node
-            			MERGE (this0_node)-[:\`SIMILAR\`]->(this0_node_similarMovies0_node)
+            			CREATE (this0_node)-[:\`SIMILAR\`]->(this0_node_similarMovies0_node)
             		}
             	}
             WITH this, this0_node, this0_node_similarMovies0_node

packages/graphql/src/translate/create-connect-and-params.ts

@@ -33,7 +33,6 @@ import { asArray } from "../utils/utils";
 import { checkAuthentication } from "./authorization/check-authentication";
 import { createAuthorizationAfterAndParams } from "./authorization/compatibility/create-authorization-after-and-params";
 import { createAuthorizationBeforeAndParams } from "./authorization/compatibility/create-authorization-before-and-params";
-import { createRelationshipValidationString } from "./create-relationship-validation-string";
 import { createSetRelationshipProperties } from "./create-set-relationship-properties";
 import { filterMetaVariable } from "./subscriptions/filter-meta-variable";
 import { createWhereNodePredicate } from "./where/create-where-predicate";
@@ -59,7 +58,6 @@ function createConnectAndParams({
     callbackBucket,
     labelOverride,
     parentNode,
-    includeRelationshipValidation,
     isFirstLevel = true,
     source,
     indexPrefix,
@@ -74,7 +72,6 @@ function createConnectAndParams({
     refNodes: Node[];
     labelOverride?: string;
     parentNode: Node;
-    includeRelationshipValidation?: boolean;
     isFirstLevel?: boolean;
     source: "CREATE" | "UPDATE" | "CONNECT";
     indexPrefix?: string;
@@ -95,7 +92,6 @@ function createConnectAndParams({
         const inStr = relationField.direction === "IN" ? "<-" : "-";
         const outStr = relationField.direction === "OUT" ? "->" : "-";
         const relTypeStr = `[${relationField.properties ? relationshipName : ""}:${relationField.type}]`;
-        const isOverwriteNotAllowed = connect.overwrite === false;
 
         const subquery: string[] = [];
         const labels = relatedNode.getLabelString(context);
@@ -174,8 +170,7 @@ function createConnectAndParams({
         subquery.push("\t\t\tWITH connectedNodes, parentNodes"); //
         subquery.push(`\t\t\tUNWIND parentNodes as ${parentVar}`);
         subquery.push(`\t\t\tUNWIND connectedNodes as ${nodeName}`);
-        const connectOperator = isOverwriteNotAllowed ? "CREATE" : "MERGE";
-        subquery.push(`\t\t\t${connectOperator} (${parentVar})${inStr}${relTypeStr}${outStr}(${nodeName})`);
+        subquery.push(`\t\t\tCREATE (${parentVar})${inStr}${relTypeStr}${outStr}(${nodeName})`);
 
         if (relationField.properties) {
             const relationship = context.relationships.find(
@@ -215,31 +210,6 @@ function createConnectAndParams({
 
         const innerMetaStr = "";
 
-        if (includeRelationshipValidation || isOverwriteNotAllowed) {
-            const relValidationStrs: string[] = [];
-            const matrixItems = [
-                [parentNode, parentVar],
-                [relatedNode, nodeName],
-            ] as [Node, string][];
-
-            matrixItems.forEach((mi) => {
-                const relValidationStr = createRelationshipValidationString({
-                    node: mi[0],
-                    context,
-                    varName: mi[1],
-                    ...(isOverwriteNotAllowed && { relationshipFieldNotOverwritable: relationField.fieldName }),
-                });
-                if (relValidationStr) {
-                    relValidationStrs.push(relValidationStr);
-                }
-            });
-
-            if (relValidationStrs.length) {
-                subquery.push(`\tWITH ${[...filterMetaVariable(withVars), nodeName].join(", ")}${innerMetaStr}`);
-                subquery.push(relValidationStrs.join("\n"));
-            }
-        }
-
         subquery.push(`WITH ${[...filterMetaVariable(withVars), nodeName].join(", ")}${innerMetaStr}`);
 
         if (connect.connect) {
@@ -275,7 +245,6 @@ function createConnectAndParams({
                                 refNodes: [newRefNode],
                                 parentNode: relatedNode,
                                 labelOverride: relField.union ? newRefNode.name : "",
-                                includeRelationshipValidation: true,
                                 isFirstLevel: false,
                                 source: "CONNECT",
                             });

packages/graphql/src/translate/create-create-and-params.ts

@@ -27,7 +27,6 @@ import {
     createAuthorizationAfterAndParamsField,
 } from "./authorization/compatibility/create-authorization-after-and-params";
 import createConnectAndParams from "./create-connect-and-params";
-import { createRelationshipValidationString } from "./create-relationship-validation-string";
 import { createSetRelationshipProperties } from "./create-set-relationship-properties";
 import { assertNonAmbiguousUpdate } from "./utils/assert-non-ambiguous-update";
 import { addCallbackAndSetParam } from "./utils/callback-utils";
@@ -57,7 +56,6 @@ function createCreateAndParams({
     context,
     callbackBucket,
     withVars,
-    includeRelationshipValidation,
     topLevelNodeVariable,
     authorizationPrefix = [0],
 }: {
@@ -67,7 +65,6 @@ function createCreateAndParams({
     context: Neo4jGraphQLTranslationContext;
     callbackBucket: CallbackBucket;
     withVars: string[];
-    includeRelationshipValidation?: boolean;
     topLevelNodeVariable?: string;
     //used to build authorization variable in auth subqueries
     authorizationPrefix?: number[];
@@ -144,7 +141,6 @@ function createCreateAndParams({
                             node: refNode,
                             varName: nodeName,
                             withVars: [...withVars, nodeName],
-                            includeRelationshipValidation: false,
                             topLevelNodeVariable,
                             authorizationPrefix: [...authorizationPrefix, reducerIndex, createIndex, refNodeIndex],
                         });
@@ -184,16 +180,6 @@ function createCreateAndParams({
                             }
                             res.meta.authorizationPredicates.push(...authorizationPredicates);
                         }
-
-                        const relationshipValidationStr = createRelationshipValidationString({
-                            node: refNode,
-                            context,
-                            varName: nodeName,
-                        });
-                        if (relationshipValidationStr) {
-                            res.creates.push(`WITH *`);
-                            res.creates.push(relationshipValidationStr);
-                        }
                     });
                 }
 
@@ -331,15 +317,6 @@ function createCreateAndParams({
         params = { ...params, ...authParams };
     }
 
-    if (includeRelationshipValidation) {
-        const str = createRelationshipValidationString({ node, context, varName });
-
-        if (str) {
-            creates.push(`WITH *`);
-            creates.push(str);
-        }
-    }
-
     return { create: creates.join("\n"), params, authorizationPredicates, authorizationSubqueries };
 }
 

packages/graphql/src/translate/create-update-and-params.ts

@@ -38,7 +38,6 @@ import createConnectAndParams from "./create-connect-and-params";
 import createCreateAndParams from "./create-create-and-params";
 import createDeleteAndParams from "./create-delete-and-params";
 import createDisconnectAndParams from "./create-disconnect-and-params";
-import { createRelationshipValidationString } from "./create-relationship-validation-string";
 import { createSetRelationshipProperties } from "./create-set-relationship-properties";
 import { assertNonAmbiguousUpdate } from "./utils/assert-non-ambiguous-update";
 import { addCallbackAndSetParam } from "./utils/callback-utils";
@@ -72,7 +71,6 @@ export default function createUpdateAndParams({
     context,
     callbackBucket,
     parameterPrefix,
-    includeRelationshipValidation,
 }: {
     parentVar: string;
     updateInput: any;
@@ -83,7 +81,6 @@ export default function createUpdateAndParams({
     context: Neo4jGraphQLTranslationContext;
     callbackBucket: CallbackBucket;
     parameterPrefix: string;
-    includeRelationshipValidation?: boolean;
 }): [string, any] {
     let hasAppliedTimeStamps = false;
 
@@ -304,7 +301,6 @@ export default function createUpdateAndParams({
                                 parameterPrefix: `${parameterPrefix}.${key}${
                                     relationField.union ? `.${refNode.name}` : ""
                                 }${relationField.typeMeta.array ? `[${index}]` : ``}.update.node`,
-                                includeRelationshipValidation: true,
                             });
                             res.params = { ...res.params, ...updateAndParams[1] };
                             innerUpdate.push(updateAndParams[0]);
@@ -427,7 +423,6 @@ export default function createUpdateAndParams({
                                 callbackBucket,
                                 varName: nodeName,
                                 withVars: [...withVars, nodeName],
-                                includeRelationshipValidation: false,
                                 ...createNodeInput,
                             });
                             subquery.push(nestedCreate);
@@ -463,16 +458,6 @@ export default function createUpdateAndParams({
                             subquery.push(
                                 ...getAuthorizationStatements(authorizationPredicates, authorizationSubqueries)
                             );
-
-                            const relationshipValidationStr = createRelationshipValidationString({
-                                node: refNode,
-                                context,
-                                varName: nodeName,
-                            });
-                            if (relationshipValidationStr) {
-                                subquery.push(`WITH ${[...withVars, nodeName].join(", ")}`);
-                                subquery.push(relationshipValidationStr);
-                            }
                         });
                     }
 
@@ -623,11 +608,6 @@ export default function createUpdateAndParams({
 
     const preUpdatePredicates = authorizationBeforeStrs;
 
-    const preArrayMethodValidationStr = "";
-    const relationshipValidationStr = includeRelationshipValidation
-        ? createRelationshipValidationString({ node, context, varName })
-        : "";
-
     if (meta.preArrayMethodValidationStrs.length) {
         const nullChecks = meta.preArrayMethodValidationStrs.map((validationStr) => `${validationStr[0]} IS NULL`);
         const propertyNames = meta.preArrayMethodValidationStrs.map((validationStr) => validationStr[1]);
@@ -667,16 +647,7 @@ export default function createUpdateAndParams({
 
     const statements = strs;
 
-    return [
-        [
-            preUpdatePredicatesStr,
-            preArrayMethodValidationStr,
-            ...statements,
-            authorizationAfterStr,
-            ...(relationshipValidationStr ? [withStr, relationshipValidationStr] : []),
-        ].join("\n"),
-        params,
-    ];
+    return [[preUpdatePredicatesStr, ...statements, authorizationAfterStr].join("\n"), params];
 }
 
 function validateNonNullProperty(res: Res, varName: string, field: BaseField) {

packages/graphql/src/translate/translate-create.ts

@@ -64,7 +64,11 @@ export default async function translateCreate({
 
     const { createStrs, params } = mutationInputs.reduce(
         (res, input, index) => {
-            const varName = varNameStrs[index] as string;
+            const varName = varNameStrs[index];
+            if (!varName) {
+                throw new Error("Expected varName to be defined");
+            }
+
             const create = [`CALL {`];
             const withVars = [varName];
             projectionWith.push(varName);
@@ -80,7 +84,6 @@ export default async function translateCreate({
                 context,
                 varName,
                 withVars,
-                includeRelationshipValidation: true,
                 topLevelNodeVariable: varName,
                 callbackBucket,
             });