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#!/usr/bin/env perl
#
# 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.
#
use strict;
use warnings;
use qpid;
my $broker = ( @ARGV > 0 ) ? $ARGV[0] : "localhost:5672";
my $connectionOptions = ( @ARGV > 1 ) ? $ARGV[1] : "";
my $query = <<END;
let \$w := ./weather
return \$w/station = 'Raleigh-Durham International Airport (KRDU)'
and \$w/temperature_f > 50
and \$w/temperature_f - \$w/dewpoint > 5
and \$w/wind_speed_mph > 7
and \$w/wind_speed_mph < 20
END
my $address = <<END;
xml-exchange; {
create: always,
node: { type: topic, x-declare: { type: xml } },
link: {
x-bindings: [{ exchange: xml-exchange, key: weather, arguments: { xquery:" $query" } }]
}}
END
# create a connection object
my $connection = new qpid::messaging::Connection( $broker, $connectionOptions );
eval {
# open the connection, then create from it a session
# from the session, create a receiver to handle incoming messages
$connection->open();
my $session = $connection->create_session();
my $receiver = $session->create_receiver($address);
# create a message and set its contentn
my $message = new qpid::messaging::Message();
my $content = <<END;
<weather>
<station>Raleigh-Durham International Airport (KRDU)</station>
<wind_speed_mph>16</wind_speed_mph>
<temperature_f>70</temperature_f>
<dewpoint>35</dewpoint>
</weather>
END
$message->set_content($content);
# create a sender for the xml-exchange/weater topic
# then send the message
my $sender = $session->create_sender('xml-exchange/weather');
$sender->send($message);
# wait for the response and then output it to the screen
my $response = $receiver->fetch();
print $response->get_content() . "\n";
# close the connection
$connection->close();
};
die $@ if ($@);
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