fallbackobjectcopierimpl.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)FallbackObjectCopierImpl.java	1.8 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package com.sun.corba.se.impl.copyobject ;

import com.sun.corba.se.spi.copyobject.ObjectCopier ;
import com.sun.corba.se.spi.copyobject.ReflectiveCopyException ;

/** Trys a first ObjectCopier.  If the first throws a ReflectiveCopyException,
 * falls back and tries a second ObjectCopier.
 */
public class FallbackObjectCopierImpl implements ObjectCopier 
{
    private ObjectCopier first ;
    private ObjectCopier second ;

    public FallbackObjectCopierImpl( ObjectCopier first,
	ObjectCopier second ) 
    {
	this.first = first ;
	this.second = second ;
    }

    public Object copy( Object src ) throws ReflectiveCopyException
    {
	try {
	    return first.copy( src ) ;
	} catch (ReflectiveCopyException rce ) {
	    // XXX log this fallback at a low level
	    return second.copy( src ) ;
	}
    }
}