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2.6. Property Injection into a BPEL Process

You can inject properties into your BPEL process definition by using the SwitchYardPropertyFunction.resolveProperty() XPath custom function. The bpel:copy section copies Greeting property value into the ReplySayHelloVar variable in example shown below: 
  <bpel:copy>    
    <bpel:from xmlns:property="java:org.switchyard.component.bpel.riftsaw.SwitchYardPropertyFunction"
      expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0">
       <![CDATA[concat(property:resolveProperty('Greeting'), $ReceiveSayHelloVar.parameters/tns:input)]]>
    </bpel:from>
    <bpel:to part="parameters" variable="ReplySayHelloVar">
      <bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:result]]></bpel:query>
    </bpel:to>
  </bpel:copy>
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