SAXParseException.java

/*
 * Portions Copyright  2000-2009 Sun Microsystems, Inc. All Rights
 * Reserved.  Use is subject to license terms.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 * 
 * 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 version 2 for more details (a copy is
 * included at /legal/license.txt).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
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 */

// SAXParseException.java - SAX parse exception class.
// http://www.saxproject.org
// Written by David Megginson
// No warranty; no copyright -- use this as you will.

package org.xml.sax;

/**
 * Encapsulate an XML parse error or warning.
 *
 * <p>This exception may include information for locating the error
 * in the original XML document, as if it came from a {@link Locator}
 * object.  Note that although the application
 * will receive a SAXParseException as the argument to the handlers
 * in the {@link org.xml.sax.ErrorHandler ErrorHandler} interface, 
 * the application is not actually required to throw the exception; 
 * instead, it can simply read the information in it and take a 
 * different action.</p>
 *
 * <p>Since this exception is a subclass of {@link org.xml.sax.SAXException 
 * SAXException}, it inherits the ability to wrap another exception.</p>
 *
 * @since SAX 1.0
 * @author David Megginson
 * @see org.xml.sax.SAXException
 * @see org.xml.sax.Locator
 * @see org.xml.sax.ErrorHandler
 */
public class SAXParseException extends SAXException
{


    //////////////////////////////////////////////////////////////////////
    // Constructors.
    //////////////////////////////////////////////////////////////////////


    /**
     * Create a new SAXParseException from a message and a Locator.
     *
     * <p>This constructor is especially useful when an application is
     * creating its own exception from within a {@link org.xml.sax.ContentHandler
     * ContentHandler} callback.</p>
     *
     * @param message The error or warning message.
     * @param locator The locator object for the error or warning (may be null).
     * @see org.xml.sax.Locator
     */
    public SAXParseException (String message, Locator locator)
    {
        super(message);

        if (locator != null) {
            this.publicId = locator.getPublicId();
            this.systemId = locator.getSystemId();
            this.lineNumber = locator.getLineNumber();
            this.columnNumber = locator.getColumnNumber();
        } else {
            this.lineNumber   = -1;
            this.columnNumber = -1;
        }
    }


    /**
     * Get the public identifier of the entity where the exception occurred.
     *
     * @return A string containing the public identifier, or null
     *         if none is available.
     * @see org.xml.sax.Locator#getPublicId
     */
    public String getPublicId ()
    {
        return this.publicId;
    }


    /**
     * Get the system identifier of the entity where the exception occurred.
     *
     * <p>If the system identifier is a URL, it will have been resolved
     * fully.</p>
     *
     * @return A string containing the system identifier, or null
     *         if none is available.
     * @see org.xml.sax.Locator#getSystemId
     */
    public String getSystemId ()
    {
        return this.systemId;
    }


    /**
     * The line number of the end of the text where the exception occurred.
     *
     * <p>The first line is line 1.</p>
     *
     * @return An integer representing the line number, or -1
     *         if none is available.
     * @see org.xml.sax.Locator#getLineNumber
     */
    public int getLineNumber ()
    {
        return this.lineNumber;
    }


    /**
     * The column number of the end of the text where the exception occurred.
     *
     * <p>The first column in a line is position 1.</p>
     *
     * @return An integer representing the column number, or -1
     *         if none is available.
     * @see org.xml.sax.Locator#getColumnNumber
     */
    public int getColumnNumber ()
    {
        return this.columnNumber;
    }


    //////////////////////////////////////////////////////////////////////
    // Internal state.
    //////////////////////////////////////////////////////////////////////


    /**
     * @serial The public identifier, or null.
     * @see #getPublicId
     */    
    private String publicId;


    /**
     * @serial The system identifier, or null.
     * @see #getSystemId
     */
    private String systemId;


    /**
     * @serial The line number, or -1.
     * @see #getLineNumber
     */
    private int lineNumber;


    /**
     * @serial The column number, or -1.
     * @see #getColumnNumber
     */
    private int columnNumber;

}

// end of SAXParseException.java