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/*
 * 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;

/**
 * converts plain objects to objects that are 
 * persistable via a subclass of VariableInstance. 
 */
public interface Converter extends Serializable {

  /**
   * is true if this converter supports the given type, false otherwise.
   */
  boolean supports(Object value);
  
  /**
   * converts a given object to its persistable format.
   */
  Object convert(Object o);

  /**
   * reverts a persisted object to its original form.
   */
  Object revert(Object o);
}