Java tutorial
/** * 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.camel.component.twitter.producer; import org.apache.camel.Exchange; import org.apache.camel.component.twitter.TwitterEndpoint; import twitter4j.Status; import twitter4j.StatusUpdate; /** * Produces text as a status update. */ public class UserProducer extends Twitter4JProducer { public UserProducer(TwitterEndpoint te) { super(te); } @Override public void process(Exchange exchange) throws Exception { // update user's status Object in = exchange.getIn().getBody(); Status response; if (in instanceof StatusUpdate) { response = updateStatus((StatusUpdate) in); } else { String s = exchange.getIn().getMandatoryBody(String.class); response = updateStatus(s); } /* * Support the InOut exchange pattern in order to provide access to * the unique identifier for the published tweet which is returned in the response * by the Twitter REST API: https://dev.twitter.com/docs/api/1/post/statuses/update */ if (exchange.getPattern().isOutCapable()) { // here we just copy the header of in message to the out message exchange.getOut().copyFrom(exchange.getIn()); exchange.getOut().setBody(response); } } private Status updateStatus(StatusUpdate status) throws Exception { Status reponse = te.getProperties().getTwitter().updateStatus(status); log.debug("Updated status: {}", status); log.debug("Status id: {}", reponse.getId()); return reponse; } private Status updateStatus(String status) throws Exception { if (status.length() > 160) { log.warn("Message is longer than 160 characters. Message will be truncated!"); status = status.substring(0, 160); } Status response = te.getProperties().getTwitter().updateStatus(status); log.debug("Updated status: {}", status); log.debug("Status id: {}", response.getId()); return response; } }