Package org.drools.task

Source Code of org.drools.task.RunTaskService

/**
* Copyright 2010 JBoss Inc
*
* 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 org.drools.task;

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Date;
import java.util.Map;
import java.util.Properties;

import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

import org.apache.commons.collections.map.HashedMap;
import org.drools.task.service.SendIcal;
import org.drools.task.service.TaskService;
import org.drools.task.service.TaskServiceSession;
import org.drools.task.service.mina.MinaTaskServer;
import org.drools.SystemEventListenerFactory;
import org.mvel2.MVEL;
import org.mvel2.ParserContext;
import org.mvel2.compiler.ExpressionCompiler;

public class RunTaskService {

  private EntityManagerFactory emf;
  private TaskService taskService;
  private TaskServiceSession taskSession;
  private MinaTaskServer server;

  public static void main(String[] args) throws Exception {
    new RunTaskService().start();
  }

  @SuppressWarnings("unchecked")
  private void start() throws Exception {
    Properties conf = new Properties();
    conf.setProperty("mail.smtp.host", "localhost");
    conf.setProperty("mail.smtp.port", "2345");
    conf.setProperty("from", "from@domain.com");
    conf.setProperty("replyTo", "replyTo@domain.com");
    conf.setProperty("defaultLanguage", "en-UK");
    SendIcal.initInstance(conf);

    // Use persistence.xml configuration
    emf = Persistence.createEntityManagerFactory("org.drools.task");

    taskService = new TaskService(emf, SystemEventListenerFactory.getSystemEventListener());
    taskSession = taskService.createSession();
    MockUserInfo userInfo = new MockUserInfo();
    taskService.setUserinfo(userInfo);
    Map<String, Object> vars = new HashedMap();

    Reader reader = new InputStreamReader(RunTaskService.class.getResourceAsStream("LoadUsers.mvel"));
    Map<String, User> users = (Map<String, User>) eval(reader, vars);
    for (User user : users.values()) {
      taskSession.addUser(user);
    }

    reader = new InputStreamReader(RunTaskService.class.getResourceAsStream("LoadGroups.mvel"));
    Map<String, Group> groups = (Map<String, Group>) eval(reader, vars);
    for (Group group : groups.values()) {
      taskSession.addGroup(group);
    }
   
    server = new MinaTaskServer( taskService );
        Thread thread = new Thread( server );
        thread.start();
        Thread.sleep( 500 );
        System.out.println("Server started ...");
  }

  protected void stop() throws Exception {
        server.stop();
    taskSession.dispose();
    emf.close();
  }

  public Object eval(Reader reader, Map<String, Object> vars) {
    try {
      return eval(toString(reader), vars);
    } catch (IOException e) {
      throw new RuntimeException("Exception Thrown", e);
    }
  }

  public String toString(Reader reader) throws IOException {
    int charValue = 0;
    StringBuffer sb = new StringBuffer(1024);
    while ((charValue = reader.read()) != -1) {
      // result = result + (char) charValue;
      sb.append((char) charValue);
    }
    return sb.toString();
  }

  public Object eval(String str, Map<String, Object> vars) {
    ExpressionCompiler compiler = new ExpressionCompiler(str.trim());

    ParserContext context = new ParserContext();
    context.addPackageImport("org.drools.task");
    context.addPackageImport("org.drools.task.service");
    context.addPackageImport("org.drools.task.query");
    context.addPackageImport("java.util");

    vars.put("now", new Date());
    return MVEL.executeExpression(compiler.compile(context), vars);
  }
}
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