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/*
 * $Header: /cvs/jaxen/jaxen/src/java/main/org/jaxen/saxpath/XPathSyntaxException.java,v 1.10 2006/06/03 20:29:30 elharo Exp $
 * $Revision: 1.10 $
 * $Date: 2006/06/03 20:29:30 $
 *
 * ====================================================================
 *
 * Copyright 2000-2002 bob mcwhirter & James Strachan.
 * All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 
 *   * 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.
 * 
 *   * Neither the name of the Jaxen Project nor the names of its
 *     contributors may be used to endorse or promote products derived 
 *     from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS 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 COPYRIGHT OWNER
 * OR 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 on behalf of the Jaxen Project and was originally
 * created by bob mcwhirter  and
 * James Strachan .  For more information on the
 * Jaxen Project, please see .
 *
 * $Id: XPathSyntaxException.java,v 1.10 2006/06/03 20:29:30 elharo Exp $
 */

package org.navimatrix.jaxen.saxpath;


/**
 * Represents a syntax error in an XPath expression.
 * This is a compile-time error that is detectable irrespective of 
 * the context in which the XPath expression is evaluated.
 */
public class XPathSyntaxException extends SAXPathException
{
    /**
     * 
     */
    private static final long serialVersionUID = 3567675610742422397L;
    private String xpath;
    private int    position;
    private final static String lineSeparator = System.getProperty("line.separator");

    /**
     * Creates a new XPathSyntaxException.
     * 
     * @param xpath the incorrect XPath expression 
     * @param position the index of the character at which the syntax error was detected
     * @param message the detail message
     */
    public XPathSyntaxException(String xpath,
                                int position,
                                String message)
    {
        super( message );
        this.position = position;
        this.xpath    = xpath;
    }

    /**
     * 

* Returns the index of the character at which the syntax error was detected * in the XPath expression. *

* * @return the character index in the XPath expression * at which the syntax error was detected */ public int getPosition() { return this.position; } /** *

* Returns the syntactically incorrect XPath expression. *

* * @return the syntactically incorrect XPath expression */ public String getXPath() { return this.xpath; } public String toString() { return getClass() + ": " + getXPath() + ": " + getPosition() + ": " + getMessage(); } /** *

* Returns a string in the form " ^" which, when placed on the line * below the XPath expression in a monospaced font, should point to the * location of the error. *

* * @return the position marker */ private String getPositionMarker() { int pos = getPosition(); StringBuffer buf = new StringBuffer(pos+1); for ( int i = 0 ; i < pos ; ++i ) { buf.append(" "); } buf.append("^"); return buf.toString(); } /** *

* Returns a long formatted description of the error, * including line breaks. *

* * @return a longer description of the error on multiple lines */ public String getMultilineMessage() { StringBuffer buf = new StringBuffer(); buf.append( getMessage() ); buf.append( lineSeparator ); buf.append( getXPath() ); buf.append( lineSeparator ); buf.append( getPositionMarker() ); return buf.toString(); } }




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