[WSO2 ESB] How to read a value of SOAP element using property mediator

Hi all,

Property mediator in WSO2 ESB is a very useful mediator and can be use for various mediation purposes. In here I used property mediator to read SOAP element value.

1. I created a sequence with property mediator. Sample Configuration as follows:

 <sequence name="propertySeq">  
     <property expression="//ser:getSimpleQuote/ser:symbol/text()"  
       name="testProperty" scope="default" type="STRING"  
       xmlns:ns="http://org.apache.synapse/xsd"  
       xmlns:ser="http://services.samples" xmlns:xsd="http://sample.wso2.org/xsd"/>  
     <log level="custom">  
       <property expression="get-property('testProperty')"  
         name="PropertyValue" xmlns:ns="http://org.apache.synapse/xsd"/>  
     </log>  
   </sequence>  

2. I created a proxy service with above sequence.

 <proxy name="propertyProx" startOnLoad="true" trace="disable" transports="http https">  
     <description/>  
     <target endpoint="SimpleStockQuote" inSequence="propertySeq"/>  
 </proxy>  
 <endpoint name="SimpleStockQuote">  
     <address uri="http://localhost:9000/services/SimpleStockQuoteService/"/>  
 </endpoint>  

3. Invoke proxy service. 

Note: Through property mediator, I will retrieve value of "symbol" and used logs to indicated retruved value.

Sample SOAP message will be as follows:

 <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://services.samples">  
   <soapenv:Header/>  
   <soapenv:Body>  
    <ser:getSimpleQuote>  
      <!--Optional:-->  
      <ser:symbol>WSO2</ser:symbol>  
    </ser:getSimpleQuote>  
   </soapenv:Body>  
 </soapenv:Envelope>  

Logs should be illustrate as follows: 

 [2016-03-29 18:28:22,380] INFO - LogMediator PropertyValue = WSO2  

Note: According to message type and according to the content you want to add to property mediator, you can change above configurations.

Happy Coding !! :)