How can i check the expressions like normal java conditions

[valarmathi]

Hi,

I want to check the normal java conditions like a<b ,if condition is true send the mail to user otherwise end the task .
how can i do it .Please help me.

Thanks,
Valarmathi P

[frederikherema1]

Yes you can. You can use all comparison operators UEL supports (< > <= >= != ==)

[valarmathi]

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlnsmgdc="http://www.omg.org/spec/DD/20100524/DC" xmlnsmgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://www.activiti.org/test">
  <process id="process1" name="process1">
    <startEvent id="startevent1" name="Start"></startEvent>
    <serviceTask id="mailtask1" name="Confirmation Email" activiti:type="mail">
      <extensionElements>
        <activiti:field name="to" expression="xxxxx"></activiti:field>
        <activiti:field name="from" expression="xxxxx"></activiti:field>
        <activiti:field name="subject" expression="Confirmation mail"></activiti:field>
        <activiti:field name="html">
          <activiti:expression><![CDATA[Hi,

U got confirmation ,because ur salary is lessthan 10000.

Thanks,
Valarmathi P]]></activiti:expression>
        </activiti:field>
      </extensionElements>
    </serviceTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <endEvent id="endevent2" name="End"></endEvent>
    <exclusiveGateway id="exclusivegateway1" name="Exclusive Gateway"></exclusiveGateway>
    <userTask id="usertask1" name="Salary Comparision"></userTask>
    <serviceTask id="mailtask2" name="Rejected Mail" activiti:type="mail">
      <extensionElements>
        <activiti:field name="to" expression="xxxxx"></activiti:field>
        <activiti:field name="from" expression="xxxx"></activiti:field>
        <activiti:field name="subject" expression="Rejected mail"></activiti:field>
        <activiti:field name="html">
          <activiti:expression><![CDATA[Hi,

U not yet get confirmation ,because ur salary is greater than 10000.

Thanks,
Valarmathi P]]></activiti:expression>
        </activiti:field>
      </extensionElements>
    </serviceTask>
    <sequenceFlow id="flow3" name="" sourceRef="mailtask1" targetRef="endevent1"></sequenceFlow>
    <sequenceFlow id="flow4" name="" sourceRef="usertask1" targetRef="exclusivegateway1"></sequenceFlow>
    <sequenceFlow id="flow5" name="" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow6" name="${Salary&lt;10000}" sourceRef="exclusivegateway1" targetRef="mailtask1">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${Salary<10000}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow7" name="${!salary&lt;10000}" sourceRef="exclusivegateway1" targetRef="mailtask2">
      <conditionExpression xsi:type="tFormalExpression"><![CDATA[${!salary<10000}]]></conditionExpression>
    </sequenceFlow>
    <sequenceFlow id="flow8" name="" sourceRef="mailtask2" targetRef="endevent2"></sequenceFlow>
  </process>
 
</definitions>

is this  correct,then i have write java class for normal java code is it.

Thanks,
Valarmathi P

[frederikherema1]

You can use the mail-task without any java-code.

[valarmathi]

How the mail will send the corresponding person,no need to fill the properties also for sending mail .

Thanks,
Valarmathi P

[frederikherema1]

Please read the user guide before asking random questions about stuff you encounter. We have done our very best of explaining everything in the user guide. Sending a mail is explained there…

[valarmathi]

Hi,

this is my process xml file

  <process id="provaJavaDelegate" name="delegateJar">
    <startEvent id="startevent1" name="Start"></startEvent>
    <userTask id="usertask1" name="inserimento dati libro1" activiti:candidateGroups="accountancy"></userTask>
    <userTask id="usertask2" name="verifica disponibilita libro1" activiti:candidateGroups="management"></userTask>
    <serviceTask id="servicetask1" name="javaCode" activiti:class="org.activiti.examples.bpmn.servicetask.BackwardsCompatibleExpressionDelegate">
      <extensionElements>
        <activiti:field name="text">
          <activiti:string>Hello World</activiti:string>
        </activiti:field>
      </extensionElements>
    </serviceTask>
    <endEvent id="endevent1" name="End"></endEvent>
    <sequenceFlow id="flow1" name="" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
    <sequenceFlow id="flow2" name="" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
    <sequenceFlow id="flow3" name="" sourceRef="usertask2" targetRef="servicetask1"></sequenceFlow>
    <sequenceFlow id="flow4" name="" sourceRef="servicetask1" targetRef="endevent1"></sequenceFlow>
  </process>


i used this java class


public class BackwardsCompatibleExpressionDelegate implements JavaDelegate {

@Override
public void execute(DelegateExecution execution) throws Exception {
 
  String var = (String) execution.getVariable("text");
      var = var.toUpperCase();
      execution.setVariable("text", var);

  System.out
  .println(" I am in BackwardsCompatibleExpressionDelegate….");
 
}
}

its working fine means the process instance is created.
But i have one doubt, from the java class i have set the value for uppercase ,this value where can i get it while executing the process.
Please clear my doubt.

Thanks,
Valarmathi P

[frederikherema1]

Use the RepositoryService to get variables of a running process, so you can verify the values. If it's finished and history is on, use the HistoryService to get historicVariableUpdates (HistoricDetailQuery) for a finished process-instance

[valarmathi]

I used the RepositoryService class in the below method,i run the jUnit but i can't get the value.


public void startProcess() throws Exception {
  RepositoryService repositoryService = activitiRule.getRepositoryService();
  repositoryService.createDeployment().addInputStream("provaJavaDelegate.bpmn20.xml",
    new FileInputStream(filename)).deploy();
  RuntimeService runtimeService = activitiRule.getRuntimeService();
  Map<String, Object> variableMap = new HashMap<String, Object>();
  variableMap.put("name", "Activiti");
  ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("provaJavaDelegate", variableMap);
  assertNotNull(processInstance.getId());
  System.out.println("id " + processInstance.getId() + " "
    + processInstance.getProcessDefinitionId());
}
}

Thanks,
Valarmathi P

[jbarrez]

What exactly goes wrong? Which line doesn't work?