WS02 Enrich mediator after end point call - wso2

Question

I'm trying to use enrichment mediator to populate custom response from End point
my sequence
<sequence name="GetMySqlData" trace="disable" xmlns="http://ws.apache.org/ns/synapse">
<enrich description="AddProductData">
<source clone="true" type="inline">
<ProductDataMySqlDB xmlns="">
<code/>
<name/>
<description/>
<qty/>
</ProductDataMySqlDB>
</source>
<target action="child" xpath="//mediate"/>
</enrich>
<property expression="$ctx:ProductCode" name="code" scope="default" type="STRING"/>
<payloadFactory media-type="xml">
<format>
<soapenv:Envelope xmlns:dat="http://ws.wso2.org/dataservice" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Header/>
<soapenv:Body>
<dat:getInventoryByCode>
<dat:code>$1</dat:code>
</dat:getInventoryByCode>
</soapenv:Body>
</soapenv:Envelope>
</format>
<args>
<arg evaluator="xml" expression="get-property('code')"/>
</args>
</payloadFactory>
<property name="HTTP_METHOD" scope="axis2" type="STRING" value="POST"/>
<property name="SOAPAction" scope="transport" type="STRING" value="getInventoryByCode"/>
<call>
<endpoint key="getInventoryByCode"/>
</call>
--PROBLEMS STARTS ---
<enrich description="code">
<source clone="true" xpath="//Entry/code"/>
<target xpath="//mediate/ProductDataMySqlDB/code"/>
</enrich>
<enrich description="name">
<source clone="true" xpath="//Body/Entries/Entry/name"/>
<target xpath="//mediate/ProductDataMySqlDB/name"/>
</enrich>
<enrich description="description">
<source clone="true" xpath="//Entries/Entry/description" />
<target xpath="//mediate/ProductDataMySqlDB/description"/>
</enrich>
<enrich description="qty">
<source clone="true" xpath="//m0:Entries/m0:Entry/m0:qty" xmlns:m0="http://ws.wso2.org/dataservice" />
<target xpath="//mediate/ProductDataMySqlDB/qty"/>
</enrich>
<log level="full">
<property expression="$body" name="MySQLResponse"/>
</log>
<loopback/>
</sequence>
response that I getting form endpoint is like
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>
<Entries xmlns="http://ws.wso2.org/dataservice">
<Entry>
<code>PR2</code>
<name>Product2</name>
<description>Product stored in MySQL</description>
<qty>-2</qty>
</Entry>
</Entries>
</soapenv:Body>
</soapenv:Envelope>
and the error in log are :
Specified node by xpath cannot be found. {org.apache.synapse.mediators.elementary.EnrichMediator}
Cannot Enrich message from an empty source. {org.apache.synapse.mediators.elementary.EnrichMediator}
so it looks like the xpath for my source is wrong
<enrich description="code">
<source clone="true" xpath="WHAT WOULD BE THE CORRECT PATH?"/>
<target xpath="//mediate/ProductDataMySqlDB/code"/>
</enrich>
thnks

Answer 1

In your message, 'Entry' and 'code' nodes belongs to a namespace "http://ws.wso2.org/dataservice" (look at the 'Entries' root node) : you should declare and use this namespace in your source xpath :
<source xmlns:ds="http://ws.wso2.org/dataservice" clone="true" xpath="//ds:Entry/ds:code"/>