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package org.apache.qpid.example.amqpexample.headers;
/*
*
* 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.
*
*/
import org.apache.qpid.transport.Connection;
import org.apache.qpid.transport.Session;
import java.util.Map;
import java.util.HashMap;
public class DeclareQueue
{
/**
* Creates 2 queues and bind them to an headers exchange. One queue receives messages with both
* properties H1 and H2 and the other queue receives messages with either one of those properties.
*/
public static void main(String[] args)
{
// Create connection
Connection con = new Connection();
con.connect("localhost", 5672, "test", "guest", "guest",false);
// Create session
Session session = con.createSession(0);
// declare and bind queues
session.queueDeclare("headers_queue_any", null, null);
session.queueDeclare("headers_queue_all", null, null);
// we need to declare the header: name, type, alternate exchange
session.exchangeDeclare("test.headers", "headers", "amq.direct", null);
// The matching algorithm is controlled by 'x-match' property
// 'x-match' can take one of two values,
// (i) 'all' implies that all the other pairs must match the headers
// property of a message for that message to be routed (i.e. an AND match)
// (ii) 'any' implies that the message should be routed if any of the
// fields in the headers property match one of the fields in the arguments table (i.e. an OR match)
Map<String, Object> arguments = new HashMap<String, Object>();
arguments.put("x-match", "any");
arguments.put("h1", "v1");
arguments.put("h2", "v2");
session.exchangeBind("headers_queue_any", "test.headers", "useless", arguments);
arguments = new HashMap<String, Object>();
arguments.put("x-match", "all");
arguments.put("h1", "v1");
arguments.put("h2", "v2");
session.exchangeBind("headers_queue_all", "test.headers", "useless", arguments);
// confirm completion
session.sync();
//cleanup
session.close();
con.close();
}
}
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