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The primary goals of this example are to introduce you to the following:

  1. Transformer that profiling.
  2. The Smooks configuration file.
  3. Executing the Smooks Transformation.

 
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To Build: "mvn clean install"
To Run: "mvn exec:java"

Transforming using profiling

This is a simple example that illustrates how Smooks can be used to apply "profile" based transformations on a message.
Using profiles, you can share common transformation configurations across all messages that share the same profiles.

[work in progress]

So here's the source xml that is to be transformed:

<a>
    <b>
        <c>
            <b></b>
        </c>
    </b>
</a>

And this is the expected result of the transform for target profile 'message-exchange-1':

<from-a>
    <to-b>
        <c>
            <b></b>
        </c>
    </to-b>
</from-a>

And this is the expected result of the transform for target profile 'message-exchange-2':

<from-a>
    <b>
        <c>
            <to-c></to-c>
        </c>
    </b>
</from-a>

And this is the expected result of the transform for target profile 'message-exchange-3':

<from-a>
    <b>
        <to-d>
            <b></b>
        </to-d>
    </b>
</from-a>

And this is the expected result of the transform for target profile 'message-exchange-4':

<a>
    <to-b>
        <c>
            <b></b>
        </c>
    </to-b>
</a>

And this is the expected result of the transform for target profile 'message-exchange-5':

<a>
    <to-b>
        <message-exchange-5>
            <d-to-b></d-to-b>
        </message-exchange-5>
    </to-b>
</a>



The Smooks Configuration

In order to apply this transformer to a message fragment, a Smooks Configurationneeds to be created. This configuration will target the transformer at a particular message fragment. For more information on configuring XSLT resources, see XslContentDeliveryUnitCreator.

Here's the configuration ("smooks-config.xml"):

<?xml version="1.0"?>
<smooks-resource-list xmlns="http://www.milyn.org/xsd/smooks-1.0.xsd">

    <profiles>
        <profile base-profile="message-exchange-1" sub-profiles="from-a,to-b" />
        <profile base-profile="message-exchange-2" sub-profiles="from-a,to-c" />
        <profile base-profile="message-exchange-3" sub-profiles="from-a,to-d" />

        <profile base-profile="message-exchange-4" sub-profiles="from-c,to-b" />
        <profile base-profile="message-exchange-5" sub-profiles="from-d,to-b" />
    </profiles>

    <resource-config selector="a" target-profile="from-a">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">from-a</param>
	</resource-config>

    <resource-config selector="a b" target-profile="to-b">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">to-b</param>
	</resource-config>

    <resource-config selector="c b" target-profile="to-c">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">to-c</param>
	</resource-config>

    <resource-config selector="c" target-profile="to-d">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">to-d</param>
	</resource-config>

    <resource-config selector="b c" target-profile="message-exchange-5">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">message-exchange-5</param>
	</resource-config>

    <resource-config selector="c b" target-profile="to-b AND from-d">
	    <resource>example.BasicJavaTransformer</resource>
		<param name="newName">d-to-b</param>
	</resource-config>

</smooks-resource-list>

Executing The Transformation


// Instantiate Smooks with the config...
Smooks smooks = new Smooks("smooks-config.xml");

// Filter the input message to the outputWriter, using the execution context...
smooks.filter(new StreamSource(messageIn), new StreamResult(outputWriter));



Of course, you'd typically cache the Smooks instance.

See the example/Main.java in the example source.

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