wso2 esb filter with xquery expression inside property - wso2-esb

Question

I want to use this expression in WSO2 property mediator
sum(//datas//queryResponse[CODEAGENCE='01003']//NOMBER)
I have done this to count without apply filter
fn:sum($ctx:datas//*[local-name()='queryResponse']//*[local-name()='NOMBRE'])

Answer 1

Your question is unclear. Do you want to count sum of NOMBRE field, using xquery on a property, that contains XML? If so, here is a sample API. You can call it from POSTMAN or browser http://{YourWSO2SErver}:8280/Test/testSO_57326564
The result is {"sum":"340.0"} on sample data.
Please note, that the property "datas" has OM type.
<api xmlns="http://ws.apache.org/ns/synapse" name="Test" context="/Test">
<resource methods="GET" uri-template="/testSO_57326564">
<inSequence>
<log level="full"/>
<payloadFactory media-type="xml">
<format>
<datas xmlns="">
<queryResponse>
<CODEAGENCE>01003</CODEAGENCE>
<NOMBRE>100</NOMBRE>
</queryResponse>
<queryResponse>
<CODEAGENCE>01003</CODEAGENCE>
<NOMBRE>240</NOMBRE>
</queryResponse>
<queryResponse>
<CODEAGENCE>01002</CODEAGENCE>
<NOMBRE>10000000</NOMBRE>
</queryResponse>
</datas>
</format>
<args/>
</payloadFactory>
<property name="datas" expression="$body/*[1]" type="OM" description="property must be an OM type"/>
<property name="sum" expression="fn:sum($ctx:datas//queryResponse[CODEAGENCE=01003]/NOMBRE)"/>
<payloadFactory media-type="json">
<format> {"sum":"$1"} </format>
<args>
<arg evaluator="xml" expression="get-property('sum')"/>
</args>
</payloadFactory>
<respond/>
</inSequence>
</resource>
</api>