fromexpression.java

jbpm-bpel-1.1.Beta3 JBoss jBPM Starters Kit 是一个综合包

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the JBPM BPEL PUBLIC LICENSE AGREEMENT as
 * published by JBoss Inc.; either version 1.0 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.
 */
package org.jbpm.bpel.graph.basic.assign;

import org.jbpm.bpel.graph.basic.Assign;
import org.jbpm.bpel.sublang.def.Expression;
import org.jbpm.graph.exe.Token;

/**
 * <code>&lt;from&gt;</code> variant that allows processes to perform simple
 * computations on properties and variables.
 * @see "WS-BPEL 2.0 &sect;9.3"
 * @author Alejandro Gu韟ar
 * @version $Revision: 1.1 $ $Date: 2006/09/27 03:53:02 $
 */
public class FromExpression extends Assign.From {

  private static final long serialVersionUID = 1L;
  private Expression expression;

  public FromExpression() {
  }

  public Object extract(Token token) {
    return expression.getEvaluator().evaluate(token);
  }

  public Expression getExpression() {
    return expression;
  }

  public void setExpression(Expression expression) {
    this.expression = expression;
  }
}