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<definitions xmlns="http://ws.apache.org/ns/synapse">
<!-- the SimpleURLRegistry allows access to a URL based registry (e.g. file:/// or http://) -->
<registry provider="org.wso2.carbon.mediation.registry.ESBRegistry">
<!-- the root property of the simple URL registry helps resolve a resource URL as root + key -->
<parameter name="root">file:repository/samples/resources/</parameter>
<!-- all resources loaded from the URL registry would be cached for this number of milli seconds -->
<parameter name="cachableDuration">15000</parameter>
</registry>
<sequence name="main">
<in>
<!-- define the request processing XSLT resource as a property value -->
<property name="symbol" value="transform/transform.xslt"/>
<!-- {} denotes that this key is a dynamic one and it is not a static key -->
<!-- use Xpath expression "get-property()" to evaluate real key from property -->
<xslt key="{get-property('symbol')}"/>
</in>
<out>
<!-- transform the standard response back into the custom format the client expects -->
<!-- the key is looked up in the remote registry using a static key -->
<xslt key="transform/transform_back.xslt"/>
</out>
<send/>
</sequence>
</definitions> |
Prerequisites:
- Start the Synapse configuration numbered 16: i.e.
wso2esb-samples.
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sh -sn 16- Start the Axis2 server and deploy the SimpleStockQuoteService if not already done.
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./axis2server.sh |
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The first registry resource "transform/transform.xslt" is set as a property value. Inside the XSLT mediator the local property value is lookup using the Xpath expression "get-property()". Likewise any Xpath XPath expression can be enclosed inside "{ }" to denote that it is a dynamic key. Then the mediator will evaluate the real value for that expression.
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| Info |
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You can try with different local entries as the source with the correct target xpath XPath values. |
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Sample on dynamic and static registry keys |
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