integerpool.cs

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using System;

namespace OpenNLP.Tools.Util
{
	/// <summary> A pool of read-only, unsigned Integer objects within a fixed,
	/// non-sparse range.  Use this class for operations in which a large
	/// number of Integer wrapper objects will be created.
	/// 
	/// Created: Sat Oct 27 10:59:11 2001
	/// 
	/// </summary>
	/// <author>  Eric Friedman
	/// </author>
	/// <version>  $Id: IntegerPool.java,v 1.1 2001/10/28 03:17:03 ericdf Exp $
	/// </version>
	
	public class IntegerPool
	{
		private int[] maiTable;
		
		/// <summary> Creates an IntegerPool with 0..size Integer objects.
		/// 
		/// </summary>
		/// <param name="size">the size of the pool.
		/// </param>
		public IntegerPool(int size)
		{
			maiTable = new int[size];
			for (int iCurrentValue = 0; iCurrentValue < size; iCurrentValue++)
			{
				maiTable[iCurrentValue] = iCurrentValue;
			} // end of for (int iCurrentValue = 0; iCurrentValue < size; iCurrentValue++)
		}
		
		/// <summary> Returns the shared Integer wrapper for <tt>value</tt> if it is
		/// inside the range managed by this pool.  if <tt>value</tt> is
		/// outside the range, a new Integer instance is returned.
		/// 
		/// </summary>
		/// <param name="inputValue">an <code>int</code> value
		/// </param>
		/// <returns> an <code>Integer</code> value
		/// </returns>
		public virtual int GetInteger(int inputValue)
		{
			if (inputValue < maiTable.Length && inputValue >= 0)
			{
				return maiTable[inputValue];
			}
			else
			{
				return inputValue;
			}
		}
	} // IntegerPool
}