| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.sling.graphql.core.schema; |
| |
| import graphql.schema.DataFetcher; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.graphql.api.graphqljava.DataFetcherProvider; |
| import org.osgi.framework.Constants; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.osgi.service.component.annotations.ReferencePolicy; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| @Component(service = DataFetcherSelector.class, immediate = true, property = { |
| Constants.SERVICE_DESCRIPTION + "=Apache Sling Scripting GraphQL FetcherManager", |
| Constants.SERVICE_VENDOR + "=The Apache Software Foundation" }) |
| public class DataFetcherSelector { |
| |
| @Reference( |
| name = "slingFetchers", |
| cardinality = ReferenceCardinality.MULTIPLE, |
| policy = ReferencePolicy.DYNAMIC) |
| private final List<DataFetcherProvider> factories = new CopyOnWriteArrayList<>(); |
| |
| public DataFetcherSelector() { |
| // public default constructor required ... |
| } |
| |
| /** Convenience constructor for testing */ |
| protected DataFetcherSelector(DataFetcherProvider... testFetchers) { |
| factories.addAll(Arrays.asList(testFetchers)); |
| } |
| |
| public DataFetcher<Object> getDataFetcherForType(DataFetcherDefinition def, Resource r) { |
| String ns = def.getFetcherNamespace(); |
| String name = def.getFetcherName(); |
| |
| for (DataFetcherProvider factory : factories) { |
| if (factory.getNamespace().equals(ns) && factory.getName().equals(name)) { |
| return factory.createDataFetcher(r, def.getFetcherName(), def.getFetcherOptions(), def.getFetcherSourceExpression()); |
| } |
| } |
| return null; |
| } |
| |
| } |