Question

This Question relates to Mule ESB 3.2.

If I have read values from JMS, transform to JSON and store the values in my session like this:

<message-properties-transformer scope="session" doc:name="save values to session">            
        <add-message-property key="id" value="#[json-node://id]"/>
        <add-message-property key="name" value="#[json-node://name]"/>
</message-properties-transformer>   

<component class="org.mule.example.echo.Echo"/>

How do I access these property values from a java component?

Answer 1

First of all, your class must implement the org.mule.api.lifecycle.Callable interface. Then you can get the properties values inside the onCall method like this

@Override
public Object onCall(MuleEventContext eventContext) throws Exception {
   String id = eventContext.getMessage().getProperty("id", PropertyScope.SESSION);
   String name = eventContext.getMessage().getProperty("name", PropertyScope.SESSION);
   //Do the rest of your stuff
}