Readme.md

Switchyard Script Component

This project provides an implementation.script enabling the usage of the any JVM scripting languge with JSR-223 support in a SwitchYard service implementation.

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Using script "inlined" in SwitchYard

<sd:switchyard 
    xmlns="urn:switchyard-component-script:config:1.0" 
    xmlns:sca="http://docs.oasis-open.org/ns/opencsa/sca/200912" 
    xmlns:sd="urn:switchyard-config:switchyard:1.0"
    xmlns:bean="urn:switchyard-component-bean:config:1.0">

    <sca:composite>
    
        <sca:component name="ScriptComponent">
            <sca:service name="OrderService" >
                <sca:interface.java interface="org.switchyard.component.script.deploy.support.OrderService"/>
            </sca:service>
            
            <implementation.script language="JavaScript">
                <code>
		'Hello ' + exchange.message.content
                </code>
            </implementation.script>
        </sca:component>
        
    </sca:composite>

</sd:switchyard>

The script languge is defined by the attribute language of implementation.script

Calling this service is done in the same way as calling any other SwitchYard service, for example:

String title = (String) newInvoker("OrderService").operation("getTitleForItem").sendInOut(10).getContent(String.class);

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Using external script

<sd:switchyard 
    xmlns="urn:switchyard-component-script:config:1.0" 
    xmlns:sca="http://docs.oasis-open.org/ns/opencsa/sca/200912" 
    xmlns:sd="urn:switchyard-config:switchyard:1.0"
    xmlns:bean="urn:switchyard-component-bean:config:1.0">

    <sca:composite>
    
        <sca:component name="scriptComponent">
            <sca:service name="OrderService" >
                <sca:interface.java interface="org.switchyard.component.script.deploy.support.OrderService"/>
            </sca:service>
            
            <implementation.script scriptFile="script.js"/>
        </sca:component>
        
    </sca:composite>

</sd:switchyard>

The script can be located on the classpath or in an external file. The scripting language can be defined by the language attribute or is devised from an extension of a scripting file

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Message content/Exchange injection

The invoked script has binded one of two variables

• exchange - representing SwitchYard exchange and available if injectExchange attribute of implementation.script set to true
• content - content of the incoming message otherwise <implementation.script injectExchange="true" scriptFile="file://sample.js"/>

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