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I want to make 'cc' as optional in mail task

sandeep_upatang

I want to make "cc" as optional in mail task, If no value passed to "cc" it is throwing below error.
Can any one tell me how to solve it.

My Mail Task code :

<serviceTask id="submitrequestmail" name="User Submit Request Mail" activiti:type="mail">
      <extensionElements>
        <activiti:field name="to">
          <activiti:expression><![CDATA[${to}]]></activiti:expression>
        </activiti:field>
        <activiti:field name="from">
          <activiti:expression><![CDATA[${from}]]></activiti:expression>
        </activiti:field>
        <activiti:field name="subject">
          <activiti:expression><![CDATA[Your request with number ${requestNo} submitted successfully.]]></activiti:expression>
        </activiti:field>
        <activiti:field name="cc">
          <activiti:expression><![CDATA[${cc}]]></activiti:expression>
        </activiti:field>
        <activiti:field name="html">
          <activiti:expression><![CDATA[<html>
               <body>
                 Dear ${user},<br/><br/>
                 Your request with number ${requestNo} submitted successfully.<br/><br/>                 
               </body>
              </html>]]></activiti:expression>
        </activiti:field>
      </extensionElements>
    </serviceTask>
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Error:
<code>
org.activiti.engine.ActivitiException: Unknown property used in expression: ${cc}
   at org.activiti.engine.impl.el.JuelExpression.getValue(JuelExpression.java:53) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.bpmn.behavior.MailActivityBehavior.getStringFromField(MailActivityBehavior.java:336) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.bpmn.behavior.MailActivityBehavior.execute(MailActivityBehavior.java:80) ~[activiti-engine-

Caused by: org.activiti.engine.impl.javax.el.PropertyNotFoundException: Cannot resolve identifier 'cc'
   at org.activiti.engine.impl.juel.AstIdentifier.eval(AstIdentifier.java:83) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.juel.AstEval.eval(AstEval.java:50) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.juel.AstNode.getValue(AstNode.java:26) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.juel.TreeValueExpression.getValue(TreeValueExpression.java:114) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
   at org.activiti.engine.impl.delegate.ExpressionGetInvocation.invoke(ExpressionGetInvocation.java:33) ~[activiti-engine-5.19.0.2.jar:5.19.0.2]
<code>

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Comments

martin_grofcik

Hi Sandeep,

The problem is that ${cc} must be evaluated. cc variable does not exist that's why exception is thrown.
Use the expression which returns null in the case when cc variable does not exist.

Regards
Martin

mitpatoliya

Could you please provide example Martin Grofcik‌? I come across same situation tried few options but did not get any success. Ex.. ${execution.getVariable("cc")!=null}

cjose

Hi Mittal,

Try

<activiti:expression><![CDATA[${execution.getVariable("cc")}]]></activiti:expression>