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Selective ConsumerThe Selective Consumer from the EIP patterns can be implemented in two ways
The first solution is to provide a Message Selector to the underlying URIs when creating your consumer. For example when using JMS you can specify a selector parameter so that the message broker will only deliver messages matching your criteria. The other approach is to use a Message Filter which is applied; then if the filter matches the message your consumer is invoked as shown in the following example Using the Fluent Builders Error formatting macro: snippet: java.lang.IndexOutOfBoundsException: Index: 20, Size: 20
Using the Spring XML Extensions Error rendering macro 'code': Invalid value specified for parameter 'java.lang.NullPointerException'
<bean id="myProcessor" class="org.apache.camel.builder.MyProcessor"/>
<camelContext errorHandlerRef="errorHandler" xmlns="http://camel.apache.org/schema/spring">
<route>
<from uri="direct:a"/>
<filter>
<xpath>$foo = 'bar'</xpath>
<process ref="myProcessor"/>
</filter>
</route>
</camelContext>
Using This PatternIf you would like to use this EIP Pattern then please read the Getting Started, you may also find the Architecture useful particularly the description of Endpoint and URIs. Then you could try out some of the Examples first before trying this pattern out. |
