javax.mail.search.SubjectTerm.java Source code

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Here is the source code for javax.mail.search.SubjectTerm.java

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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2017 Oracle and/or its affiliates. All rights reserved.
 *
 * 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://oss.oracle.com/licenses/CDDL+GPL-1.1
 * or 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 LICENSE.txt.
 *
 * GPL Classpath Exception:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
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 * its licensees as provided above.  However, if you add GPL Version 2 code
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 */

package javax.mail.search;

import javax.mail.Message;

/**
 * This class implements comparisons for the message Subject header.
 * The comparison is case-insensitive.  The pattern is a simple string
 * that must appear as a substring in the Subject.
 *
 * @author Bill Shannon
 * @author John Mani
 */
public final class SubjectTerm extends StringTerm {

    private static final long serialVersionUID = 7481568618055573432L;

    /**
     * Constructor.
     *
     * @param pattern  the pattern to search for
     */
    public SubjectTerm(String pattern) {
        // Note: comparison is case-insensitive
        super(pattern);
    }

    /**
     * The match method.
     *
     * @param msg   the pattern match is applied to this Message's 
     *         subject header
     * @return      true if the pattern match succeeds, otherwise false
     */
    @Override
    public boolean match(Message msg) {
        String subj;

        try {
            subj = msg.getSubject();
        } catch (Exception e) {
            return false;
        }

        if (subj == null)
            return false;

        return super.match(subj);
    }

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