/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * its licensees as provided above.  However, if you add GPL Version 2 code
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/*
 * $Header: /cvs/glassfish/appserv-api/src/java/com/sun/appserv/management/util/jmx/ReadWriteAttributeFilter.java,v 1.2 2007/05/05 05:31:04 tcfujii Exp $
 * $Revision: 1.2 $
 * $Date: 2007/05/05 05:31:04 $
 */
 

package com.sun.appserv.management.util.jmx;

import javax.management.MBeanAttributeInfo;

/**
	This class contains various filters based on read/write status of
	an Attribute.
 */
public class ReadWriteAttributeFilter implements AttributeFilter
{
	protected		ReadWriteAttributeFilter( )	{}
	
	/**
	 */
		public boolean
	filterAttribute( final MBeanAttributeInfo info )
	{
		throw new RuntimeException( "Can't get here" );
	}
	
	public static final AttributeFilter	READ_ONLY_FILTER =
		new ReadWriteAttributeFilter( )
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( info.isReadable() && ! info.isWritable() );
		}
	};
		
	public static final AttributeFilter	READABLE_FILTER =
		new ReadWriteAttributeFilter( )
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( info.isReadable() );
		}
	};
		
	public static final AttributeFilter	WRITE_ONLY_FILTER =
		new ReadWriteAttributeFilter()
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( info.isWritable() && ! info.isReadable() );
		}
	};
		
	public static final AttributeFilter	WRITEABLE_FILTER =
		new ReadWriteAttributeFilter()
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( info.isWritable() );
		}
	};
		
	public static final AttributeFilter	READ_WRITE_FILTER =
		new ReadWriteAttributeFilter()
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( info.isWritable() && info.isReadable() );
		}
	};
		
	public static final AttributeFilter	ALL_FILTER =
		new ReadWriteAttributeFilter()
	{
		public boolean	filterAttribute( final MBeanAttributeInfo info )
		{
			return( true );
		}
	};
}