@neo4j/graphql
Version:
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
54 lines • 1.98 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getCypherMeta = getCypherMeta;
const graphql_1 = require("graphql");
function getCypherMeta(field, interfaceField) {
const directive = field.directives?.find((x) => x.name.value === "cypher") ||
interfaceField?.directives?.find((x) => x.name.value === "cypher");
if (!directive) {
return undefined;
}
return {
statement: parseStatementFlag(directive),
columnName: parseColumnNameFlag(directive),
};
}
function parseStatementFlag(directive) {
const stmtArg = directive.arguments?.find((x) => x.name.value === "statement");
if (!stmtArg) {
throw new Error("@cypher statement required");
}
if (stmtArg.value.kind !== graphql_1.Kind.STRING) {
throw new Error("@cypher statement is not a string");
}
return stmtArg.value.value;
}
function parseColumnNameFlag(directive) {
const stmtArg = directive.arguments?.find((x) => x.name.value === "columnName");
if (!stmtArg) {
throw new Error("@cypher columnName required");
}
if (stmtArg.value.kind !== graphql_1.Kind.STRING) {
throw new Error("@cypher columnName is not a string");
}
return stmtArg.value.value;
}
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