topic Re: Java Service Task Problem with List in Alfresco Archive

Java Service Task Problem with List

smee82 — Wed, 02 Nov 2011 13:06:47 GMT

Hello,i want to set List of users (productmanagers) as a variable. I want to reuse this variable for a multiinstance task which needs a collection. The collection should contain these users. I tried different possibilities but only get Exception:couldn't instantiate class. Does anybody know how to s

Re: Java Service Task Problem with List

gant — Wed, 02 Nov 2011 13:40:43 GMT

I think, List is only an interface and thus can't be instantiated. Use ArrayList or something instead.
regards

Re: Java Service Task Problem with List

smee82 — Wed, 02 Nov 2011 13:55:26 GMT

I did this before and it works to store my list:

public class MyJavaService implements JavaDelegate {

@Override
public void execute(DelegateExecution execution) {
System.out.println("SERVICE");
String[] str_assigneeList = {"kermit", "gonzo", "fozzie"};
execution.setVariable("assigneeList", str_assigneeList);
}
}

But the problem is that i cannot use this "assigneeList" as a collection in the multi-instance task. Thats the main issue. The following example works when i start a new process instance and i can use the "assigneeList" in my multi-instance task. But i want so set the variables in Java ServiceTask.

String[] str_assigneeList = {"kermit", "gonzo", "fozzie"};
List<String> assigneeList = Arrays.asList(str_assigneeList);
ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("MultiInstanceTask", CollectionUtil.singletonMap("assigneeList", assigneeList));
System.out.println("Started Process instance id " +processInstance.getProcessInstanceId());

Re: Java Service Task Problem with List

smee82 — Wed, 02 Nov 2011 15:17:22 GMT

String[] str_productmanagerList = {"prod_man_1", "prod_man_2"};
Collection<String> productmanagerList = Arrays.asList(str_productmanagerList);
execution.setVariable("productmanagerList", productmanagerList);

I finally got it. It works with Collection.