/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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/*
 * @(#)FromStringTerm.java	1.9 07/05/04
 */

package javax.mail.search;

import javax.mail.Message;
import javax.mail.Address;

/**
 * This class implements string comparisons for the From Address
 * header. <p>
 *
 * Note that this class differs from the <code>FromTerm</code> class
 * in that this class does comparisons on address strings rather than Address
 * objects. The string comparisons are case-insensitive.
 *
 * @since       JavaMail 1.1
 */

public final class FromStringTerm extends AddressStringTerm {

    private static final long serialVersionUID = 5801127523826772788L;

    /**
     * Constructor.
     *
     * @param pattern   the address pattern to be compared.
     */
    public FromStringTerm(String pattern) {
	super(pattern);
    }

    /**
     * Check whether the address string specified in the constructor is
     * a substring of the From address of this Message.
     *
     * @param   msg 	The comparison is applied to this Message's From
     *		    	address.
     * @return          true if the match succeeds, otherwise false.
     */
    public boolean match(Message msg) {
	Address[] from;

	try {
	    from = msg.getFrom();
	} catch (Exception e) {
	    return false;
	}

	if (from == null)
	    return false;
	
	for (int i=0; i < from.length; i++)
	    if (super.match(from[i]))
		return true;
	return false;
    }

    /**
     * Equality comparison.
     */
    public boolean equals(Object obj) {
	if (!(obj instanceof FromStringTerm))
	    return false;
	return super.equals(obj);
    }
}