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/* ====================================================================
 * 
 * The ObjectStyle Group Software License, version 1.1
 * ObjectStyle Group - http://objectstyle.org/
 * 
 * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
 * of the software. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The end-user documentation included with the redistribution, if any,
 *    must include the following acknowlegement:
 *    "This product includes software developed by independent contributors
 *    and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 * 
 * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
 *    or promote products derived from this software without prior written
 *    permission. For written permission, email
 *    "andrus at objectstyle dot org".
 * 
 * 5. Products derived from this software may not be called "ObjectStyle"
 *    or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
 *    names without prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by many
 * individuals and hosted on ObjectStyle Group web site.  For more
 * information on the ObjectStyle Group, please see
 * .
 */
package org.objectstyle.cayenne;

import org.objectstyle.cayenne.util.LocalizedStringsHandler;

/**
 * A generic checked exception that may be thrown by Cayenne framework. All checked
 * exceptions in Cayenne inherit from this class.
 * 
 * @author Andrus Adamchik
 */
public class CayenneException extends Exception {

    private static String exceptionLabel;

    static {
        String version = LocalizedStringsHandler.getString("cayenne.version");
        String date = LocalizedStringsHandler.getString("cayenne.build.date");

        if (version != null || date != null) {
            exceptionLabel = "[v." + version + " " + date + "] ";
        }
        else {
            exceptionLabel = "";
        }
    }

    public static String getExceptionLabel() {
        return exceptionLabel;
    }

    /**
     * Creates new CayenneException without detail message.
     */
    public CayenneException() {
    }

    /**
     * Constructs an CayenneException with the specified detail message.
     * 
     * @param message the detail message.
     */
    public CayenneException(String message) {
        super(message);
    }

    /**
     * Constructs an CayenneException that wraps a cause
     * thrown elsewhere.
     */
    public CayenneException(Throwable cause) {
        super(cause);
    }

    public CayenneException(String message, Throwable cause) {
        super(message, cause);
    }

    /**
     * Returns exception message without Cayenne version label.
     * 
     * @since 1.1
     */
    public String getUnlabeledMessage() {
        return super.getMessage();
    }

    public String getMessage() {
        String message = super.getMessage();
        return (message != null) ? getExceptionLabel() + message : getExceptionLabel()
                + "(no message)";
    }
}