Java tutorial
/*************************************************************************** * Copyright 2012 TXT e-solutions SpA * 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. * * This work was performed within the IoT_at_Work Project * and partially funded by the European Commission's * 7th Framework Programme under the research area ICT-2009.1.3 * Internet of Things and enterprise environments. * * Authors: * Salvatore Piccione (TXT e-solutions SpA) * Carbone Matteo * * Contributors: * Domenico Rotondi (TXT e-solutions SpA) **************************************************************************/ package it.txt.ens.authorisationService.amqp; import java.io.IOException; import com.rabbitmq.client.Channel; /** * This class encapsulates the management of an AMQP exchange. * * @author Carbone Matteo * @author Salvatore Piccione (TXT e-solutions SpA - salvatore.piccione AT network.txtgroup.com) */ public class AMQPExchangeHelper { public AMQPExchangeHelper() { } /** * Creates a new exchange * @throws IOException */ public void creates(Channel channel, String exchange) throws IOException { channel.exchangeDeclare(exchange, "topic", true); } /** * Creates a new exchange * @throws IOException */ public void creates(Channel channel, String exchange, String type, boolean durable, boolean autoDelete) throws IOException { channel.exchangeDeclare(exchange, type, durable, autoDelete, null); } /** * Deletes an exchange * @throws IOException */ public void delete(Channel channel, String exchange) throws IOException { channel.exchangeDelete(exchange); } /** * Checks the existence of an exchange * * @param channel * @param exchange * @return */ public boolean exists(Channel channel, String exchange) { try { channel.exchangeDeclarePassive(exchange); return true; } catch (IOException e) { return false; } finally { } } }