StringEqualsCO.java

// BlogBridge -- RSS feed reader, manager, and web based service
// Copyright (C) 2002-2006 by R. Pito Salas
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software Foundation;
// either version 2 of the License, or (at your option) any later version.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License along with this program;
// if not, write to the Free Software Foundation, Inc., 59 Temple Place,
// Suite 330, Boston, MA 02111-1307 USA
//
// Contact: R. Pito Salas
// mailto:pitosalas@users.sourceforge.net
// More information: about BlogBridge
// http://www.blogbridge.com
// http://sourceforge.net/projects/blogbridge
//
// $Id: StringEqualsCO.java,v 1.5 2007/02/20 15:15:55 spyromus Exp $
//

package com.salas.bb.domain.query.general;

import com.salas.bb.domain.query.AbstractComparisonOperation;
import com.salas.bb.utils.StringUtils;
import com.salas.bb.utils.i18n.Strings;

/**
 * Simple operation which is using <code>equals()</code> to compare objects.
 */
public class StringEqualsCO extends AbstractComparisonOperation
{
    /** Instance of this comparison operation. */
    public static final StringEqualsCO INSTANCE = new StringEqualsCO();

    /**
     * Creates operation.
     */
    public StringEqualsCO()
    {
        this(Strings.message("query.operation.is"), "is");
    }

    /**
     * Constructor for extensions.
     *
     * @param name name.
     * @param descriptor descriptor.
     */
    protected StringEqualsCO(String name, String descriptor)
    {
        super(name, descriptor);
    }

    /**
     * Compares some target value against value for comparison.
     *
     * @param targetValue     target value.
     * @param comparisonValue comparison value.
     *
     * @return TRUE if the target value matches the condition presented by this comparison operation
     *         in conjunction with comparison value.
     */
    public boolean match(String targetValue, String comparisonValue)
    {
        targetValue = targetValue.trim();
        String[] keywords = StringUtils.keywordsToArray(comparisonValue);

        boolean matches = false;
        for (int i = 0; !matches && i < keywords.length; i++)
        {
            matches = targetValue.equalsIgnoreCase(keywords[i]);
        }

        return matches;
    }
}