package org.jbpm.jsf.core.action;
import org.jbpm.jsf.JbpmActionListener;
import org.jbpm.jsf.JbpmJsfContext;
import org.jbpm.taskmgmt.exe.TaskInstance;
import javax.el.ELContext;
import javax.el.ValueExpression;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
/**
*
*/
public final class AssignTaskActionListener implements JbpmActionListener {
private final ValueExpression taskInstanceExpression;
private final ValueExpression actorIdExpression;
private final ValueExpression overwriteSwimlaneExpression;
public AssignTaskActionListener(final ValueExpression taskInstanceExpression, final ValueExpression actorIdExpression, final ValueExpression overwriteSwimlaneExpression) {
this.taskInstanceExpression = taskInstanceExpression;
this.actorIdExpression = actorIdExpression;
this.overwriteSwimlaneExpression = overwriteSwimlaneExpression;
}
public String getName() {
return "assignTask";
}
public void handleAction(JbpmJsfContext context, ActionEvent event) {
try {
final FacesContext facesContext = FacesContext.getCurrentInstance();
final ELContext elContext = facesContext.getELContext();
final Object taskInstanceValue = taskInstanceExpression.getValue(elContext);
if (taskInstanceValue == null) {
context.setError("Error assigning task", "The task instance value is null");
return;
}
if (!(taskInstanceValue instanceof TaskInstance)) {
context.setError("Error assigning task", "Attempted to assigning something other than a task instance");
return;
}
final TaskInstance taskInstance = (TaskInstance) taskInstanceValue;
if (actorIdExpression == null) {
context.setError("Error assigning task", "Actor ID expression is null");
return;
}
final Object actorIdValue = actorIdExpression.getValue(elContext);
if (actorIdValue == null) {
context.setError("Error assigning task", "Actor ID expression resolved to null");
return;
}
final String actorId = actorIdValue.toString();
if (overwriteSwimlaneExpression != null) {
final Object overwriteSwimlaneValue = overwriteSwimlaneExpression.getValue(elContext);
if (overwriteSwimlaneValue == null) {
context.setError("Error assigning task", "Overwrite swimlane expression resolved to null");
return;
}
final Boolean overwriteSwimlane;
if (overwriteSwimlaneValue instanceof Boolean) {
overwriteSwimlane = (Boolean) overwriteSwimlaneValue;
} else {
overwriteSwimlane = Boolean.valueOf(overwriteSwimlaneValue.toString());
}
taskInstance.setActorId(actorId, overwriteSwimlane.booleanValue());
} else {
taskInstance.setActorId(actorId);
}
context.addSuccessMessage("Task assigned");
context.getJbpmContext().getSession().flush();
context.selectOutcome("success");
} catch (Exception ex) {
context.setError("Error assigning task", ex);
return;
}
}
}