Java tutorial
/* * Copyright 2011 the original author or authors. * * 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.springframework.social.soundcloud.api.impl; import java.util.HashMap; import java.util.List; import java.util.Map; import org.springframework.http.converter.ByteArrayHttpMessageConverter; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; import org.springframework.http.converter.xml.MarshallingHttpMessageConverter; import org.springframework.oxm.xstream.XStreamMarshaller; import org.springframework.social.NotAuthorizedException; import org.springframework.social.oauth2.AbstractOAuth2ApiBinding; import org.springframework.social.oauth2.OAuth2Version; import org.springframework.social.soundcloud.api.MeOperations; import org.springframework.social.soundcloud.api.PlaylistsOperations; import org.springframework.social.soundcloud.api.ResolveOperations; import org.springframework.social.soundcloud.api.SoundCloud; import org.springframework.social.soundcloud.api.TrackReference; import org.springframework.social.soundcloud.api.TracksOperations; import org.springframework.social.soundcloud.api.UsersOperations; import org.springframework.social.soundcloud.api.impl.json.SoundCloudModule; import org.springframework.social.soundcloud.api.impl.xml.TrackArray; import org.springframework.social.soundcloud.api.impl.xml.XmlPlaylistUpdate; import org.springframework.social.support.ClientHttpRequestFactorySelector; import org.springframework.web.client.RestTemplate; import com.fasterxml.jackson.databind.ObjectMapper; public class SoundCloudTemplate extends AbstractOAuth2ApiBinding implements SoundCloud { private MeOperations meOperations; private UsersOperations usersOperations; private ResolveOperations resolveOperations; private TracksOperations tracksOperations; private PlaylistsOperations playlistsOperations; private ObjectMapper objectMapper; @Override protected OAuth2Version getOAuth2Version() { return OAuth2Version.DRAFT_10; } /** * Create a new instance of SoundCloudTemplate. This constructor creates a * new SoundCloudTemplate able to perform unauthenticated operations against * SoundCloud's API. Some operations do not require OAuth authentication. * For example, retrieving a specified user's profile or feed does not * require authentication . A SoundCloudTemplate created with this * constructor will support those operations. Those operations requiring * authentication will throw {@link NotAuthorizedException}. */ public SoundCloudTemplate(String clientId) { initialize(clientId, null); } /** * Create a new instance of SoundCloudTemplate. This constructor creates the * SoundCloudTemplate using a given access token. * * @param accessToken * An access token given by SoundCloud after a successful OAuth 2 * authentication */ public SoundCloudTemplate(String clientId, String accessToken) { super(accessToken); initialize(clientId, accessToken); } @Override protected List<HttpMessageConverter<?>> getMessageConverters() { List<HttpMessageConverter<?>> messageConverters = super.getMessageConverters(); messageConverters.add(new ByteArrayHttpMessageConverter()); XStreamMarshaller marshaller = new XStreamMarshaller(); Map<Class<?>, String> implicitCollections = new HashMap<Class<?>, String>(); implicitCollections.put(TrackArray.class, "tracks"); marshaller.setImplicitCollections(implicitCollections); // marshaller.setConverters(converterMatchers); Map<String, Object> aliases = new HashMap<String, Object>(); aliases.put("playlist", XmlPlaylistUpdate.class.getName()); // aliases.put("playlist", PlaylistUpdate.class.getName()); aliases.put("track", TrackReference.class.getName()); Map<String, Class<?>> useAttributeFor = new HashMap<String, Class<?>>(); useAttributeFor.put("type", String.class); try { marshaller.setAliases(aliases); marshaller.setUseAttributeFor(useAttributeFor); } catch (ClassNotFoundException e) { throw new RuntimeException(e); } messageConverters.add(new MarshallingHttpMessageConverter(marshaller, marshaller)); return messageConverters; } @Override public MeOperations meOperations() { return meOperations; } private void initSubApis(String clientId, String accessToken) { usersOperations = new UsersTemplate(clientId, getRestTemplate(), isAuthorized()); meOperations = new MeTemplate(getRestTemplate(), isAuthorized()); resolveOperations = new ResolveTemplate(clientId, getRestTemplate(), isAuthorized()); tracksOperations = new TracksTemplate(clientId, getRestTemplate(), isAuthorized()); playlistsOperations = new PlaylistsTemplate(clientId, getRestTemplate(), isAuthorized(), resolveOperations); } // private helpers private void initialize(String clientId, String accessToken) { // Wrap the request factory with a BufferingClientHttpRequestFactory so // that the error handler can do repeat reads on the response.getBody() super.setRequestFactory( ClientHttpRequestFactorySelector.bufferRequests(getRestTemplate().getRequestFactory())); initSubApis(clientId, accessToken); } @Override protected void configureRestTemplate(RestTemplate restTemplate) { restTemplate.setErrorHandler(new SoundCloudErrorHandler()); } @Override protected MappingJackson2HttpMessageConverter getJsonMessageConverter() { MappingJackson2HttpMessageConverter converter = super.getJsonMessageConverter(); objectMapper = new ObjectMapper(); objectMapper.registerModule(new SoundCloudModule()); converter.setObjectMapper(objectMapper); return converter; } @Override public UsersOperations usersOperations() { return usersOperations; } @Override public ResolveOperations resolveOperations() { return resolveOperations; } @Override public TracksOperations tracksOperations() { return tracksOperations; } @Override public PlaylistsOperations playlistsOperations() { return playlistsOperations; } }