tokenvariablemap.java

jBpm是一个灵活可扩展的工作流管理系统。作为jBpm运行时server输入的业务流程使用简单强大的语言表达并打包在流程档案中

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt 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.jbpm.context.exe;

import java.io.Serializable;
import java.util.Map;

import org.jbpm.graph.exe.Token;

/**
 * is a jbpm-internal map of variableInstances related to one {@link Token}.  
 * Each token has it's own map of variableInstances, thereby creating 
 * hierarchy and scoping of process variableInstances. 
 */
public class TokenVariableMap extends VariableContainer implements Serializable {

  private static final long serialVersionUID = 1L;

  long id = 0;
  protected Token token = null;
  protected ContextInstance contextInstance = null;

  public TokenVariableMap() {
  }

  public TokenVariableMap(Token token, ContextInstance contextInstance) {
    this.token = token;
    this.contextInstance = contextInstance;
  }
  
  public void addVariableInstance(VariableInstance variableInstance) {
    super.addVariableInstance(variableInstance);
    variableInstance.setTokenVariableMap(this);
  }
  
  public String toString() {
    return "TokenVariableMap"+( (token!=null)&&(token.getName()!=null) ? "["+token.getName()+"]" : Integer.toHexString(System.identityHashCode(this)));
  }

  // protected ////////////////////////////////////////////////////////////////

  protected VariableContainer getParentVariableContainer() {
    Token parentToken = token.getParent();
    if (parentToken==null) {
      return null;
    }
    return contextInstance.getTokenVariableMap(parentToken);
  }
  
  // getters and setters //////////////////////////////////////////////////////
  
  public ContextInstance getContextInstance() {
    return contextInstance;
  }
  public Token getToken() {
    return token;
  }
  public Map getVariableInstances() {
    return variableInstances;
  }

  // private static final Log log = LogFactory.getLog(TokenVariableMap.class);
}