@neo4j/graphql
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A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
94 lines • 4.17 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 __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseLimitDirective = parseLimitDirective;
const neo4j = __importStar(require("neo4j-driver"));
const LimitDirective_1 = require("../../classes/LimitDirective");
const Error_1 = require("../../classes/Error");
const parse_value_node_1 = require("../../schema-model/parser/parse-value-node");
function parseLimitDirective({ directive, definition, }) {
const defaultLimitArgument = directive.arguments?.find((argument) => argument.name.value === "default");
const maxLimitArgument = directive.arguments?.find((argument) => argument.name.value === "max");
const defaultLimit = parseArgumentToInt(defaultLimitArgument);
const maxLimit = parseArgumentToInt(maxLimitArgument);
const limit = { default: defaultLimit, max: maxLimit };
const limitError = validateLimitArguments(limit, definition.name.value);
if (limitError) {
throw limitError;
}
return new LimitDirective_1.LimitDirective(limit);
}
function parseArgumentToInt(argument) {
if (argument) {
const parsed = (0, parse_value_node_1.parseValueNode)(argument.value);
return neo4j.int(parsed);
}
return undefined;
}
function validateLimitArguments(arg, typeName) {
const maxLimit = arg.max?.toNumber();
const defaultLimit = arg.default?.toNumber();
if (defaultLimit !== undefined && defaultLimit <= 0) {
return new Error_1.Neo4jGraphQLError(`${typeName} @limit(default: ${defaultLimit}) invalid value: '${defaultLimit}', it should be a number greater than 0`);
}
if (maxLimit !== undefined && maxLimit <= 0) {
return new Error_1.Neo4jGraphQLError(`${typeName} @limit(max: ${maxLimit}) invalid value: '${maxLimit}', it should be a number greater than 0`);
}
if (maxLimit && defaultLimit) {
if (maxLimit < defaultLimit) {
return new Error_1.Neo4jGraphQLError(`${typeName} @limit(max: ${maxLimit}, default: ${defaultLimit}) invalid default value, 'default' must be smaller than 'max'`);
}
}
return undefined;
}
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