/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.bpm.console.server;
import com.google.gson.Gson;
import org.jboss.bpm.console.client.model.TaskRef;
import org.jboss.bpm.console.client.model.TaskRefWrapper;
import org.jboss.bpm.console.server.gson.GsonFactory;
import org.jboss.bpm.console.server.integration.ManagementFactory;
import org.jboss.bpm.console.server.integration.TaskManagement;
import org.jboss.bpm.console.server.plugin.PluginMgr;
import org.jboss.bpm.console.server.plugin.FormAuthorityRef;
import org.jboss.bpm.console.server.plugin.FormDispatcherPlugin;
import org.jboss.bpm.console.server.util.ProjectName;
import org.jboss.bpm.console.server.util.RsComment;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import java.net.URL;
import java.util.List;
/**
* REST server module for accessing task related data.
*
* @author Heiko.Braun <heiko.braun@jboss.com>
*/
@Path("tasks")
@RsComment(
title = "Task Lists",
description = "Access task lists",
project = {ProjectName.JBPM}
)
public class TaskListFacade
{
private static final Logger log = LoggerFactory.getLogger(TaskMgmtFacade.class);
private TaskManagement taskManagement;
private FormDispatcherPlugin formPlugin;
/**
* Lazy load the {@link org.jboss.bpm.console.server.integration.TaskManagement}
*/
private TaskManagement getTaskManagement()
{
if(null==this.taskManagement)
{
ManagementFactory factory = ManagementFactory.newInstance();
this.taskManagement = factory.createTaskManagement();
log.debug("Using ManagementFactory impl:" + factory.getClass().getName());
}
return this.taskManagement;
}
/**
* Lazy load the {@link org.jboss.bpm.console.server.plugin.FormDispatcherPlugin}.
* Can be null if the plugin is not available.
*/
private FormDispatcherPlugin getFormDispatcherPlugin()
{
if(null==this.formPlugin)
{
this.formPlugin = PluginMgr.load(FormDispatcherPlugin.class);
}
return this.formPlugin;
}
@GET
@Path("{idRef}")
@Produces("application/json")
public Response getTasksForIdRef(
@PathParam("idRef")
String idRef
)
{
List<TaskRef> assignedTasks = getTaskManagement().getAssignedTasks(idRef);
return processTaskListResponse(assignedTasks);
}
@GET
@Path("{idRef}/participation")
@Produces("application/json")
public Response getTasksForIdRefParticipation(
@PathParam("idRef")
String idRef
)
{
List<TaskRef> taskParticipation = getTaskManagement().getUnassignedTasks(idRef, null);
return processTaskListResponse(taskParticipation);
}
private Response processTaskListResponse(List<TaskRef> taskList)
{
// decorate task form URL if plugin available
FormDispatcherPlugin formPlugin = getFormDispatcherPlugin();
if(formPlugin!=null)
{
for(TaskRef task : taskList)
{
URL taskFormURL = formPlugin.getDispatchUrl(
new FormAuthorityRef(String.valueOf(task.getId()))
);
if(taskFormURL!=null)
{
task.setUrl(taskFormURL.toExternalForm());
}
}
}
TaskRefWrapper wrapper = new TaskRefWrapper(taskList);
return createJsonResponse(wrapper);
}
private Response createJsonResponse(Object wrapper)
{
Gson gson = GsonFactory.createInstance();
String json = gson.toJson(wrapper);
return Response.ok(json).type("application/json").build();
}
}