Fetch users in workflow definition - liferay

Question

I am using Liferay 6.1.1CE with kaleo workflow.
I am created a new workflow definition,by editing singlelevel workflow.xml.
In my workflow definition,i had add a new transition "reference" and a task for the same.
In my reference task,i have to select a user from all users to send the reference.
How can i fetch the users..? Is it possible?

Answer 1

I am not entirely sure what you task is doing, but yeah, you could definitely access to portal service class by using groovy scripts. something like:
<task>
<name>Some task</name>
<actions>
<action>
<name>task action</name>
<script><![CDATA[
import com.liferay.portal.kernel.util.GetterUtil;
import java.util.List
import java.util.Map;
import java.util.Set;
import java.util.Iterator;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.model.User;
import com.liferay.portal.service.UserLocalServiceUtil;
long companyId = GetterUtil.getLong((String)
workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));
ServiceContext serviceContext = (ServiceContext)
workflowContext.get(WorkflowConstants.CONTEXT_SERVICE_CONTEXT);
List<User> users = UserLocalServiceUtil.getUsers(start, end);
]]></script>
<script-language>groovy</script-language>
<execution-type>onEntry</execution-type>
</action>
</actions>
<assignments>
<roles>
<role>
<role-type>regular</role-type>
<name>Administrator</name>
</role>
</roles>
</assignments>
<transitions>
<transition>
<name>next</name>
<target>Next Task</target>
</transition>
</transitions>
</task>
and you could access to you workflow task in code use WorkflowInstanceManagerUtil and WorkflowTaskManagerUtil, I hope this helps, let me know if you have further questions