Examples

This example show the use of multiple JMSSink operators with different parameter combinations. 


composite Main {
graph

stream <int32 id, rstring fname, rstring lname>
MyPersonNamesStream  = Beacon()
{
param
	iterations:10u;
}

// JMSSink operator with connections document in the default directory ../etc/connections.xml
// (relative to the data directory)
() as  MySink1 = JMSSink( MyPersonNamesStream )
{
param
	connection : "amqConn";	
	access     : "amqAccess";
}

// JMSSink operator with fully qualified name of connections document
() as  MySink2 = JMSSink( MyPersonNamesStream )
{
param
	connectionDocument   : "/home/streamsuser/connections/JMSconnections.xml";
	connection           : "amqConn";
	access               : "amqAccess";
}

// JMSSink operator with optional output error port specified
stream <tuple< int32 id, rstring fname, rstring lname> inTuple, rstring errorMessage>
MySink3  = JMSSink(MyPersonNamesStream )
{
param
	connection : "amqConn";	
	access     : "amqAccess";
}
// JMSSink operator with reconnectionPolicy specified as  NoRetry
() as  MySink4 = JMSSink( MyPersonNamesStream )
{
param
	connection         : "amqConn";
	access             : "amqAccess";
	reconnectionPolicy : "NoRetry";
}

// JMSSink operator with optional period and reconnectionPolicy specified
() as  MySink5 = JMSSink( MyPersonNamesStream )
{
param
	connection: "amqConn";	
	access: "amqAccess";
	reconnectionPolicy : "InfiniteRetry";
	period: 1.20;
}
// JMSSink operator with reconnectionPolicy specified as BoundedRetry
() as  MySink6 = JMSSink( MyPersonNamesStream )
{
param
	connection: "amqConn";	
	access: "amqAccess"; 
	reconnectionPolicy : "BoundedRetry";
	reconnectionBound : 2;
	period: 1.20;
}
}

The following example shows a sample connections.xml file: 


<st:connections 	xmlns:st="http://www.ibm.com/xmlns/prod/streams/adapters"
					xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<connection_specifications>
	<connection_specification name="amqConn">
	 <JMS initial_context="org.apache.activemq.jndi.ActiveMQInitialContextFactory"
		provider_url = "tcp://machine1.com:61616"
		connection_factory="ConnectionFactory"/>
	</connection_specification>
</connection_specifications>

<access_specifications>
	<access_specification name="amqAccess">
		<destination identifier="dynamicQueues/MapQueue" message_class="bytes" />
			<uses_connection connection="amqConn"/>
			<native_schema>
				<attribute name="id" type="Int" />
				<attribute name="fname" type="Bytes" length="15" />
				<attribute name="lname" type="Bytes" length="20" />
				<attribute name="age" type="Int" />
				<attribute name="gender" type="Bytes" length="1" />
				<attribute name="score" type="Float" />
				<attribute name="total" type="Double" />
			</native_schema>
	</access_specification>
</access_specifications>
</st:connections>