| /** |
| * |
| * Copyright 2009-2011 Rickard Öberg AB |
| * |
| * 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. |
| */ |
| |
| package org.apache.zest.library.rest.client; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.ResourceBundle; |
| import org.apache.zest.api.injection.scope.Structure; |
| import org.apache.zest.api.mixin.Initializable; |
| import org.apache.zest.api.mixin.InitializationException; |
| import org.apache.zest.api.structure.Module; |
| import org.apache.zest.library.rest.client.spi.ResponseReader; |
| import org.restlet.Response; |
| import org.restlet.representation.Representation; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Delegates to a list of potential readers. Register readers on startup. |
| */ |
| public class ResponseReaderDelegator |
| implements ResponseReader, Initializable |
| { |
| List<ResponseReader> responseReaders = new ArrayList<ResponseReader>( ); |
| |
| @Structure |
| private Module module; |
| |
| @Override |
| public void initialize() throws InitializationException |
| { |
| Logger logger = LoggerFactory.getLogger( getClass() ); |
| |
| ResourceBundle defaultResponseReaders = ResourceBundle.getBundle( "org.qi4j.library.rest.client.rest-client" ); |
| |
| String responseReaderClasses = defaultResponseReaders.getString( "responsereaders" ); |
| logger.info( "Using responsereaders:"+responseReaderClasses ); |
| for (String className : responseReaderClasses.split( "," )) |
| { |
| try |
| { |
| Class readerClass = module.classLoader().loadClass( className.trim() ); |
| ResponseReader reader = (ResponseReader) module.newObject( readerClass ); |
| registerResponseReader( reader ); |
| } catch (ClassNotFoundException e) |
| { |
| logger.warn( "Could not register response reader "+className, e ); |
| } |
| } |
| } |
| |
| public void registerResponseReader( ResponseReader reader ) |
| { |
| responseReaders.add( reader ); |
| } |
| |
| @Override |
| public Object readResponse( Response response, Class<?> resultType ) |
| { |
| if (resultType.equals(Representation.class)) |
| return response.getEntity(); |
| |
| for (ResponseReader responseReader : responseReaders) |
| { |
| Object result = responseReader.readResponse( response, resultType ); |
| if (result != null) |
| return result; |
| } |
| |
| return null; |
| } |
| } |