[esb-java-dev] Exception when using XSLT mediator

Asanka Abeysinghe Thu, 19 Jun 2008 11:26:13 -0700

Hi,

My requirement is to transform a SOAP message that stores FIX information in the payload to another structure using a XSLT mediator. Original message structure looks like following, which contains repeating groups, CDATA and it got siblings for the first child element after the SOAP body.

<?xml version='1.0' encoding='utf-8'?>
<soapenv:Envelope
   xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/";>
   <soapenv:Body>
       <message inSession="FIX.4.0:SYNAPSE->EXEC" counter="2">
           <header>
               <field id="8"><![CDATA[FIX.4.0]]></field>
               <field id="9"><![CDATA[136]]></field>
               <field id="34"><![CDATA[3]]></field>
               <field id="35"><![CDATA[8]]></field>
               <field id="49"><![CDATA[EXEC]]></field>
               <field id="52"><![CDATA[20080618-08:41:56]]></field>
               <field id="56"><![CDATA[SYNAPSE]]></field>
           </header>
           <body>
               <field id="6"><![CDATA[12.3]]></field>
               <field id="20"><![CDATA[0]]></field>
               <field id="31"><![CDATA[12.3]]></field>
               <field id="32"><![CDATA[100]]></field>
               <field id="37"><![CDATA[2]]></field>

           </body>
           <trailer>
               <field id="10"><![CDATA[041]]></field>
           </trailer>
       </message>
   </soapenv:Body>
</soapenv:Envelope>

Configuration file and the xslt file used is attached. When the input message comes, application throws the following exception before doing any transformation.

2008-06-19 23:20:44,105 [127.0.1.1-asankaa-laptop] [fix-Worker-1] DEBUG XSLTMediator Using byte array serialization for transformation 2008-06-19 23:20:44,449 [127.0.1.1-asankaa-laptop] [fix-Worker-1] ERROR XSLTMediator Unable to perform XSLT transformation using : xslt-key-req against source XPath : s11:Body/child::*[position()=1] | s12:Body/child::*[position()=1]

java.lang.NullPointerException
       at java.lang.System.arraycopy(Native Method)

at org.apache.xml.utils.FastStringBuffer.append(FastStringBuffer.java:663) at org.apache.xml.dtm.ref.sax2dtm.SAX2DTM.characters(SAX2DTM.java:2082) at org.springframework.xml.stream.StaxStreamXmlReader.handleCharacters(StaxStreamXmlReader.java:121) at org.springframework.xml.stream.StaxStreamXmlReader.parseInternal(StaxStreamXmlReader.java:89) at org.springframework.xml.stream.AbstractStaxXmlReader.parse(AbstractStaxXmlReader.java:68)


Appreciate your comments to solve this problem.
Asanka A .

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<!-- FIX -> SOAP conversion using XSLT mediator  -->

<definitions xmlns="http://ws.apache.org/ns/synapse";>
	<localEntry key="xslt-key-req"
		src="file:repository/conf/sample/resources/transform/fixtransform.xslt" />
	<proxy name="FIXProxy" transports="fix">
		<target>
			<endpoint>
				<address
					uri="http://localhost:9000/soap/SimpleStockQuoteService"; />
			</endpoint>
			<inSequence>
				<log level="full" />
				<xslt key="xslt-key-req" />
				<log level="full" />
			</inSequence>
			<outSequence>
				<log level="full" />
				<send />
			</outSequence>
		</target>

		<parameter name="transport.fix.AcceptorConfigURL">
			file:repository/conf/fix-synapse.cfg
		</parameter>
		<parameter name="transport.fix.AcceptorMessageStore">
			/home/asankaa/var/data/store
		</parameter>
		<parameter name="transport.fix.InitiatorConfigURL">
			file:repository/conf/synapse-sender.cfg
		</parameter>
		<parameter name="transport.fix.InitiatorMessageStore">
			/home/asankaa/var/data/store
		</parameter>
	</proxy>

</definitions>

fixtransform.xslt
Description: XML document

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[esb-java-dev] Exception when using XSLT mediator

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