// This Source Code is in the Public Domain per: http://unlicense.org
package org.litesoft.bo.attributes;

import java.util.*;

public class DisplayLength implements PropertyOfAMD
{
    public static DisplayLength of( int pLength )
    {
        return pLength >= 1 ? getInstance( pLength ) : null;
    }

    public static Integer get( AttributeMetaData pAMD )
    {
        PropertyOfAMD zProperty = pAMD.getProperties().get( MAP_KEY );
        if ( zProperty != null )
        {
            return ((DisplayLength) zProperty).mValue;
        }
        return null;
    }

    private static synchronized DisplayLength getInstance( int pLength )
    {
        DisplayLength zInstance = sInstances.get( pLength );
        if ( zInstance == null )
        {
            sInstances.put( pLength, zInstance = new DisplayLength( pLength ) );
        }
        return zInstance;
    }

    private static HashMap<Integer, DisplayLength> sInstances = new HashMap<Integer, DisplayLength>();

    private static final String MAP_KEY = "DisplayLength";

    private DisplayLength( int pValue )
    {
        mValue = pValue;
    }

    private int mValue;

    @Override
    public String toString()
    {
        return MAP_KEY + ".of( " + mValue + ")";
    }

    public String getMapKey()
    {
        return MAP_KEY;
    }

    @Override
    public boolean equals( Object them )
    {
        return (this == them) || ((them != null) && (this.getClass() == them.getClass()) && (this.mValue == ((DisplayLength) them).mValue));
    }

    @Override
    public int hashCode()
    {
        return mValue;
    }
}