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	/*
	* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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 General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package sun.management;

	import java.lang.management.LockInfo;
	import javax.management.openmbean.CompositeType;
	import javax.management.openmbean.CompositeData;
	import javax.management.openmbean.CompositeDataSupport;
	import javax.management.openmbean.OpenDataException;

	/**
	* A CompositeData for LockInfo for the local management support.
	* This class avoids the performance penalty paid to the
	* construction of a CompositeData use in the local case.
	*/
	public class LockInfoCompositeData extends LazyCompositeData {
	private final LockInfo lock;

	private LockInfoCompositeData(LockInfo li) {
	this.lock = li;
	}

	public LockInfo getLockInfo() {
	return lock;
	}

	public static CompositeData toCompositeData(LockInfo li) {
	if (li == null) {
	return null;
	}

	LockInfoCompositeData licd = new LockInfoCompositeData(li);
	return licd.getCompositeData();
	}

	protected CompositeData getCompositeData() {
	// CONTENTS OF THIS ARRAY MUST BE SYNCHRONIZED WITH
	// lockInfoItemNames!
	final Object[] lockInfoItemValues = {
	new String(lock.getClassName()),
	new Integer(lock.getIdentityHashCode()),
	};

	try {
	return new CompositeDataSupport(lockInfoCompositeType,
	lockInfoItemNames,
	lockInfoItemValues);
	} catch (OpenDataException e) {
	// Should never reach here
	throw Util.newException(e);
	}
	}

	private static final CompositeType lockInfoCompositeType;
	static {
	try {
	lockInfoCompositeType = (CompositeType)
	MappedMXBeanType.toOpenType(LockInfo.class);
	} catch (OpenDataException e) {
	// Should never reach here
	throw Util.newException(e);
	}
	}

	static CompositeType getLockInfoCompositeType() {
	return lockInfoCompositeType;
	}

	private static final String CLASS_NAME = "className";
	private static final String IDENTITY_HASH_CODE = "identityHashCode";
	private static final String[] lockInfoItemNames = {
	CLASS_NAME,
	IDENTITY_HASH_CODE,
	};

	/*
	* Returns a LockInfo object mapped from the given CompositeData.
	*/
	public static LockInfo toLockInfo(CompositeData cd) {
	if (cd == null) {
	throw new NullPointerException("Null CompositeData");
	}

	if (!isTypeMatched(lockInfoCompositeType, cd.getCompositeType())) {
	throw new IllegalArgumentException(
	"Unexpected composite type for LockInfo");
	}

	String className = getString(cd, CLASS_NAME);
	int identityHashCode = getInt(cd, IDENTITY_HASH_CODE);
	return new LockInfo(className, identityHashCode);
	}

	private static final long serialVersionUID = -6374759159749014052L;
	}

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