package net.toodarkpark.util.comparison;

import java.util.*;
import org.apache.commons.collections.Predicate;

/*
 * Are two objects equal?
 */
public class EqualToPredicate implements Predicate
{
    protected Object comparisonValue;
    protected Comparator comparator;
	protected boolean ignoreCase;

    private EqualToPredicate()
    {
        super();

        comparator = null;
        comparisonValue = null;
		ignoreCase = false;
    }

	public EqualToPredicate( Comparator aComparator, Object aComparisonValue, boolean aIgnoreCase )
    {
        this();

		comparator = aComparator;
        comparisonValue = aComparisonValue;
		ignoreCase = aIgnoreCase;
    }
	
    public EqualToPredicate( Object aComparisonValue )
    {
        this( null, aComparisonValue, false );
    }

	public EqualToPredicate( Object aComparisonValue )
	{
		this( null, aComparisonValue, false );
	}

	public EqualToPredicate( Object aComparisonValue, boolean aIgnoreCase )
	{
		this( null, aComparisonValue, aIgnoreCase );
	}

    public boolean evaluate( Object value ) throws ClassCastException, NullPointerException
    {
        boolean returnValue = false;

		if( ignoreCase == false )
		{
			if( comparator != null )
			{
				returnValue = comparator.compare( comparisonValue, value );
			}
			else
			{
				returnValue = (Comparable)comparisonValue.compare( value );
			}
		}
        else
        {
			if( comparisonValue instanceof String && value instanceof String )
			{
				returnValue = ((String)comparisonValue).equalsIgnoreCase( (String)value );
			}
        }

        return returnValue;
    }
}