@neo4j/graphql
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A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
94 lines • 4.6 kB
JavaScript
;
/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CompositeAggregationPartial = void 0;
const cypher_builder_1 = __importDefault(require("@neo4j/cypher-builder"));
const RelationshipAdapter_1 = require("../../../../../schema-model/relationship/model-adapters/RelationshipAdapter");
const utils_1 = require("../../../../../utils/utils");
const create_node_from_entity_1 = require("../../../utils/create-node-from-entity");
const wrap_subquery_in_calls_1 = require("../../../utils/wrap-subquery-in-calls");
const QueryASTNode_1 = require("../../QueryASTNode");
class CompositeAggregationPartial extends QueryASTNode_1.QueryASTNode {
constructor({ target, entity, directed = true, attachedTo, }) {
super();
this.authFilters = [];
this.entity = entity;
this.target = target;
this.directed = directed;
this.attachedTo = attachedTo ?? "node";
}
getChildren() {
return this.authFilters;
}
addAuthFilters(...filter) {
this.authFilters.push(...filter);
}
getSubqueries(context) {
if (!context.target) {
throw new Error("No parent node found!");
}
let pattern;
const targetNode = new cypher_builder_1.default.Node();
const targetNodeLabels = (0, create_node_from_entity_1.getEntityLabels)(this.target, context.neo4jGraphQLContext);
let target = targetNode;
const authFilterPredicates = this.getAuthFilterPredicate(context);
const authFilterValidations = this.getValidations(context);
if (this.entity instanceof RelationshipAdapter_1.RelationshipAdapter) {
const relVar = new cypher_builder_1.default.Relationship();
const relDirection = this.entity.getCypherDirection();
if (this.attachedTo === "relationship") {
target = relVar;
}
pattern = new cypher_builder_1.default.Pattern(context.target)
.related(relVar, { direction: relDirection, type: this.entity.type })
.to(targetNode, { labels: targetNodeLabels });
const matchClause = new cypher_builder_1.default.Match(pattern).where(cypher_builder_1.default.and(...authFilterPredicates));
const nestedSubqueries = (0, wrap_subquery_in_calls_1.wrapSubqueriesInCypherCalls)(context, this.getChildren(), [target]);
return [
cypher_builder_1.default.utils.concat(matchClause, ...authFilterValidations, ...nestedSubqueries, new cypher_builder_1.default.Return([targetNode, "node"], [relVar, "edge"])),
];
}
else {
pattern = new cypher_builder_1.default.Pattern(targetNode, { labels: targetNodeLabels });
const matchClause = new cypher_builder_1.default.Match(pattern).where(cypher_builder_1.default.and(...authFilterPredicates));
const nestedSubqueries = (0, wrap_subquery_in_calls_1.wrapSubqueriesInCypherCalls)(context, this.getChildren(), [target]);
return [
cypher_builder_1.default.utils.concat(matchClause, ...authFilterValidations, ...nestedSubqueries, new cypher_builder_1.default.Return([targetNode, "node"])),
];
}
}
print() {
return `${super.print()} <${this.target.name}>`;
}
setAttachedTo(attachedTo) {
this.attachedTo = attachedTo;
}
getAuthFilterPredicate(context) {
return (0, utils_1.filterTruthy)(this.authFilters.map((f) => f.getPredicate(context)));
}
getValidations(context) {
return (0, utils_1.filterTruthy)(this.authFilters.map((f) => f.getValidation(context)));
}
}
exports.CompositeAggregationPartial = CompositeAggregationPartial;
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