| /* |
| * |
| * 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. |
| * |
| */ |
| |
| |
| /** |
| * |
| * declare_queues.cpp |
| * |
| * This is one of three programs used to implement XML-based content |
| * routing in C++. |
| * |
| * declare_queues.cpp (this program) |
| * |
| * Creates a queue named "message_qaueue" on the broker, |
| * declares an XML Exchange, subscribes the queue to the XML |
| * Exchange using an XQuery in the binding, then exits. |
| * |
| * xml_producer.cpp |
| * |
| * Publishes messages to the XML Exchange. |
| * |
| * listener.cpp |
| * |
| * Reads messages from the "message_queue" queue. |
| */ |
| |
| #include <qpid/client/Connection.h> |
| #include <qpid/client/Session.h> |
| |
| #include <unistd.h> |
| #include <cstdlib> |
| #include <iostream> |
| |
| using namespace qpid::client; |
| using namespace qpid::framing; |
| |
| using std::string; |
| |
| |
| int main(int argc, char** argv) { |
| const char* host = argc>1 ? argv[1] : "127.0.0.1"; |
| int port = argc>2 ? atoi(argv[2]) : 5672; |
| Connection connection; |
| |
| try { |
| connection.open(host, port); |
| Session session = connection.newSession(); |
| |
| |
| //--------- Main body of program -------------------------------------------- |
| |
| // Set up queues, bind them with queries. Note that the XML exchange |
| // is not in the AMQP specification, so it is called "xml", not "amq.xml". |
| // Note that the XML exchange is not predeclared in Qpid, it must |
| // be declared by the application. |
| |
| session.queueDeclare(arg::queue="message_queue"); |
| session.exchangeDeclare(arg::exchange="xml", arg::type="xml"); |
| |
| // Application message properties are mapped to external variables |
| // in the XQuery. An XML Exchange can query message properties much |
| // like JMS, query the XML content of the message, or both. |
| |
| FieldTable binding; |
| binding.setString("xquery", "declare variable $control external;" |
| "./message/id mod 2 = 1 or $control = 'end'"); |
| session.exchangeBind(arg::exchange="xml", arg::queue="message_queue", arg::bindingKey="content_feed", arg::arguments=binding); |
| |
| //----------------------------------------------------------------------------- |
| |
| connection.close(); |
| return 0; |
| } catch(const std::exception& error) { |
| std::cout << error.what() << std::endl; |
| } |
| return 1; |
| |
| } |
| |
| |
| |