Static Operation Selector

specify a operation name in the configuration.

<hornetq:binding.hornetq>
    <swyd:operationSelector operationName="greet" xmlns:swyd="urn:switchyard-config:switchyard:1.0"/>
(... snip ...)
</hornetq:binding.hornetq>

XPath Operation Selector

specify a XPath location which contains a operation name to be invoked in the message contents.

If the configuration looks like this:

<jca:binding.jca>
    <swyd:operationSelector.xpath expression="//person/language" xmlns:swyd="urn:switchyard-config:switchyard:1.0"/>
(... snip ...)
</jca:binding.jca>

And the message content is like this:

<person>
    <name>Fernando</name>
    <language>spanish</language>
</person>

Then operation spanish() would be invoked.

Regex Operation Selector

specify a Regular Expression to find a operation name to be invoked in the message contents.

If the configuration looks like this:

<http:binding.http>
    <swyd:operationSelector.regex expression="[a-zA-Z]*Operation" xmlns:swyd="urn:switchyard-config:switchyard:1.0"/>
(... snip ...)
</http:binding.http>

And the message content is like this:

xxx yyy zzz regexOperation aaa bbb ccc

Then operation regexOperation() would be invoked.

Java Operation Selector

specify a Java class which is able to determine the operation to be invoked.

configuration should look like this:

<jca:binding.jca>
    <swyd:operationSelector.java class="org.switchyard.example.MyOperationSelectorImpl" xmlns:swyd="urn:switchyard-config:switchyard:1.0"/>
(... snip ...)
</jca:binding.jca>

Note that the org.switchyard.example.MyOperationSelectorImpl needs to implement org.switchyard.selector.OperationSelector or other concrete OperationSelector classes for each service bindings. You can override the selectOperation() method as you like.

Default OperationSelector implementation for each service bindings are following:

• Camel : org.switchyard.component.camel.selector.CamelOperationSelector

• JCA/JMS : org.switchyard.component.jca.selector.JMSOperationSelector

• JCA/CCI : org.switchyard.component.jca.selector.CCIOperationSelector

• HTTP : org.switchyard.component.http.selector.HttpOperationSelector

Scope of Support

Support for operation selector is limited to Camel, JCA and HTTP service bindings. Support for other service bindings will be added in the future.