diff options
Diffstat (limited to 'qpid/cpp/examples/old_api/xml-exchange/declare_queues.cpp')
-rw-r--r-- | qpid/cpp/examples/old_api/xml-exchange/declare_queues.cpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/qpid/cpp/examples/old_api/xml-exchange/declare_queues.cpp b/qpid/cpp/examples/old_api/xml-exchange/declare_queues.cpp new file mode 100644 index 0000000000..ad08642019 --- /dev/null +++ b/qpid/cpp/examples/old_api/xml-exchange/declare_queues.cpp @@ -0,0 +1,98 @@ +/* + * + * 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 <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; + +} + + + |