/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
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 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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/*
 * $Header: /cvs/glassfish/appserv-api/src/java/com/sun/appserv/management/j2ee/statistics/CompositeDataStats.java,v 1.2 2007/05/05 05:30:52 tcfujii Exp $
 * $Revision: 1.2 $
 * $Date: 2007/05/05 05:30:52 $
 */

package com.sun.appserv.management.j2ee.statistics;

import java.util.Set;
import java.util.Map;


import javax.management.openmbean.CompositeData;

import javax.management.j2ee.statistics.Stats;
import javax.management.j2ee.statistics.Statistic;

import com.sun.appserv.management.util.jmx.OpenMBeanUtil;

/**
	Implementation of Stats which expects a CompositeData to contain
	the Statistics keyed by name, with values of CompositeData.
 */
public final class CompositeDataStats implements Stats
{
	final Map<String,?>	mItems;
	
	/**
		Create a new CompositeDataStats using the specified CompositeData
	 */
		public
	CompositeDataStats( final CompositeData compositeData )
	{
		mItems	= OpenMBeanUtil.compositeDataToMap( compositeData );
	}
	
		public Statistic
	getStatistic( String statisticName )
	{
		final CompositeData	statData	= (CompositeData)mItems.get( statisticName );
		if ( statData == null && ! mItems.containsKey( statisticName ) )
		{
			throw new IllegalArgumentException( statisticName );
		}
		
		return( new CompositeDataStatistic( statData ) );
	}
	
		public String[]
	getStatisticNames()
	{
		final Set<String>	nameSet	= mItems.keySet();
		
		return( (String[])nameSet.toArray( new String[ nameSet.size() ] ) );
	}
	
		public Statistic[]
	getStatistics()
	{
		final String[]		names		= getStatisticNames();
		final Statistic[]	statistics	= new Statistic[ names.length ];
		
		for( int i = 0; i < names.length; ++i )
		{
			statistics[ i ]	= getStatistic( names[ i ] );
		}
		
		return( statistics );
	}
   
}