e2ecdcfe33
Former-commit-id:a02aeb236c[formerly9f19e3f712] [formerlya02aeb236c[formerly9f19e3f712] [formerly06a8b51d6d[formerly 64fa9254b946eae7e61bbc3f513b7c3696c4f54f]]] Former-commit-id:06a8b51d6dFormer-commit-id:8e80217e59[formerly3360eb6c5f] Former-commit-id:377dcd10b9
98 lines
2.9 KiB
C++
98 lines
2.9 KiB
C++
/*
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*
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*/
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/**
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*
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* declare_queues.cpp
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*
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* This is one of three programs used to implement XML-based content
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* routing in C++.
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*
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* declare_queues.cpp (this program)
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*
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* Creates a queue named "message_qaueue" on the broker,
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* declares an XML Exchange, subscribes the queue to the XML
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* Exchange using an XQuery in the binding, then exits.
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*
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* xml_producer.cpp
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*
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* Publishes messages to the XML Exchange.
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*
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* listener.cpp
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*
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* Reads messages from the "message_queue" queue.
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*/
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#include <qpid/client/Connection.h>
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#include <qpid/client/Session.h>
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#include <cstdlib>
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#include <iostream>
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using namespace qpid::client;
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using namespace qpid::framing;
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using std::string;
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int main(int argc, char** argv) {
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const char* host = argc>1 ? argv[1] : "127.0.0.1";
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int port = argc>2 ? atoi(argv[2]) : 5672;
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Connection connection;
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try {
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connection.open(host, port);
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Session session = connection.newSession();
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//--------- Main body of program --------------------------------------------
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// Set up queues, bind them with queries. Note that the XML exchange
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// is not in the AMQP specification, so it is called "xml", not "amq.xml".
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// Note that the XML exchange is not predeclared in Qpid, it must
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// be declared by the application.
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session.queueDeclare(arg::queue="message_queue");
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session.exchangeDeclare(arg::exchange="xml", arg::type="xml");
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// Application message properties are mapped to external variables
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// in the XQuery. An XML Exchange can query message properties much
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// like JMS, query the XML content of the message, or both.
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FieldTable binding;
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binding.setString("xquery", "declare variable $control external;"
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"./message/id mod 2 = 1 or $control = 'end'");
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session.exchangeBind(arg::exchange="xml", arg::queue="message_queue", arg::bindingKey="content_feed", arg::arguments=binding);
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//-----------------------------------------------------------------------------
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connection.close();
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return 0;
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} catch(const std::exception& error) {
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std::cout << error.what() << std::endl;
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}
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return 1;
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}
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