ReflectiveDelegationPolicy.java

/*
 * Distributed as part of mchange-commons-java 0.2.11
 *
 * Copyright (C) 2015 Machinery For Change, Inc.
 *
 * Author: Steve Waldman <swaldman@mchange.com>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of EITHER:
 *
 *     1) The GNU Lesser General Public License (LGPL), version 2.1, as 
 *        published by the Free Software Foundation
 *
 * OR
 *
 *     2) The Eclipse Public License (EPL), version 1.0
 *
 * You may choose which license to accept if you wish to redistribute
 * or modify this work. You may offer derivatives of this work
 * under the license you have chosen, or you may provide the same
 * choice of license which you have been offered here.
 *
 * 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.
 *
 * You should have received copies of both LGPL v2.1 and EPL v1.0
 * along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
 * If not, the text of these licenses are currently available at
 *
 * LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 *  EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php 
 * 
 */

package com.mchange.v2.codegen.intfc;

public final class ReflectiveDelegationPolicy 
{
    public final static ReflectiveDelegationPolicy USE_MAIN_DELEGATE_INTERFACE = new ReflectiveDelegationPolicy();
    public final static ReflectiveDelegationPolicy USE_RUNTIME_CLASS           = new ReflectiveDelegationPolicy();
    
    Class delegateClass;

    private ReflectiveDelegationPolicy()
    {  this.delegateClass = null; }

    public ReflectiveDelegationPolicy(Class dc)
    { 
	if (dc == null)
	    throw new IllegalArgumentException("Class for reflective delegation cannot be null!");
	this.delegateClass = dc; 
    }

    public String toString()
    {
	if (this == USE_MAIN_DELEGATE_INTERFACE)
	    return "[ReflectiveDelegationPolicy: Reflectively delegate via the main delegate interface.]";
	else if (this == USE_RUNTIME_CLASS)
	    return "[ReflectiveDelegationPolicy: Reflectively delegate via the runtime class of the delegate object.]";
	else
	    return "[ReflectiveDelegationPolicy: Reflectively delegate via " + delegateClass.getName() + ".]";
    }
}