A Problem about spring inject bean into activiti

lykm02 — Tue, 10 Jan 2012 08:47:33 GMT

Hi, all: Here is my case. I defined a userTask as following at first: <userTask id="DataValidator" name="Data Validator"> <extensionElements> <activiti:taskListener event="create" class="com.xxx.xxx.TaskAssignmen

Re: A Problem about spring inject bean into activiti

trademak — Tue, 10 Jan 2012 14:50:30 GMT

Hi,

In the Activiti in Action book you get an example of how to implement this.
When you want to use a Spring bean you should use the expression attribute in stead of the class attribute.

Best regards,

Re: A Problem about spring inject bean into activiti

lykm02 — Wed, 11 Jan 2012 02:58:01 GMT

Hi,

In the Activiti in Action book you get an example of how to implement this.
When you want to use a Spring bean you should use the expression attribute in stead of the class attribute.

Best regards,

Sorry, I have mentioned I didn't want to add Serializable interface to those field of my self extend class.
It will affact a lot of exists class.
And I don't think that's a good solution.

Yesterday, I read source code of activiti, and I found out a simply way to avoid this case.
Just remove all the use-less annotation and add a constructor for the class. As IOC container of activiti will load it, it works.

Here is my solution.



       public class TaskAssignmentHandler implements TaskListener{
              private IdentityService identityService;
              private  WorkflowHistoryService historyService;
           
              private Expression candidateGroup;       

              public TaskAssignmentHandler(){
                         //Initialize those field here.
                         identityService = AppContext.getApplicationContext().getBean("xxxx");
                         // Same like this
                         WorkflowHistoryService = ………..;
              }
              
              @Override
              public void notify(DelegateTask task){
                       // do something 
              }
       }

In the definition xml, I still use the class instead of delegateExpression

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