hudson.jbpm.model.TaskInstanceWrapper.java Source code

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Here is the source code for hudson.jbpm.model.TaskInstanceWrapper.java

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/* 
 * Copyright 2008 Tom Huybrechts and hudson.dev.java.net
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 
 * implied. See the License for the specific language governing 
 * permissions and limitations under the License.  
 * 
 */
package hudson.jbpm.model;

import hudson.jbpm.ProcessClassLoaderCache;
import hudson.model.Action;
import hudson.model.Hudson;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

import javax.servlet.ServletException;

import org.acegisecurity.userdetails.UserDetails;
import org.apache.commons.lang.StringUtils;
import org.jbpm.JbpmConfiguration;
import org.jbpm.JbpmContext;
import org.jbpm.taskmgmt.exe.TaskInstance;
import org.kohsuke.stapler.QueryParameter;
import org.kohsuke.stapler.StaplerRequest;
import org.kohsuke.stapler.StaplerResponse;

/**
 * This task records that a build is triggered by a JBPM task instance
 * 
 * @author huybrechts
 * 
 */
public class TaskInstanceWrapper implements Action {

    private final long taskInstanceId;
    private TaskInstance taskInstance;

    public TaskInstanceWrapper(long taskInstanceId) {
        this.taskInstanceId = taskInstanceId;
    }

    public TaskInstanceWrapper(TaskInstance ti) {
        this.taskInstance = ti;
        taskInstanceId = taskInstance.getId();
    }

    public long getId() {
        return taskInstanceId;
    }

    public String getDisplayName() {
        return null;
    }

    public String getIconFileName() {
        return null;
    }

    public String getUrlName() {
        return null;
    }

    public synchronized TaskInstance getTaskInstance() {
        if (taskInstance == null) {
            JbpmContext context = JbpmConfiguration.getInstance().getCurrentJbpmContext();
            taskInstance = context.getTaskMgmtSession().getTaskInstance(taskInstanceId);
        }
        return taskInstance;
    }

    public Object getForm() {
        TaskInstance ti = getTaskInstance();
        try {
            ClassLoader processClassLoader = ProcessClassLoaderCache.INSTANCE
                    .getClassLoader(ti.getProcessInstance().getProcessDefinition());
            String formClass = (String) ti.getVariableLocally("form");
            if (formClass == null) {
                return new Form(ti);
            } else {
                Class<?> cl = processClassLoader.loadClass(formClass);
                return cl.getConstructor(TaskInstance.class).newInstance(ti);
            }
        } catch (InvocationTargetException e) {
            throw new RuntimeException(e.getCause());
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }

    public void doTriggerTransition(StaplerRequest req, StaplerResponse rsp,
            @QueryParameter("transition") String transition) throws ServletException, IOException {
        JbpmContext context = JbpmConfiguration.getInstance().getCurrentJbpmContext();
        TaskInstance taskInstance = getTaskInstance();
        if (StringUtils.isEmpty(transition)) {
            taskInstance.end();
        } else {
            taskInstance.end(transition);
        }
        context.save(taskInstance);
        rsp.forwardToPreviousPage(req);
    }

    public void doStart(StaplerRequest req, StaplerResponse rsp) throws ServletException, IOException {
        String userName = ((UserDetails) Hudson.getInstance().getAuthentication().getPrincipal()).getUsername();
        JbpmContext context = JbpmConfiguration.getInstance().getCurrentJbpmContext();
        TaskInstance taskInstance = getTaskInstance();
        taskInstance.setActorId(userName);
        taskInstance.start();
        context.save(taskInstance);
        rsp.forwardToPreviousPage(req);
    }
}