/*
 * XMLValidationException.java NanoXML/Java $Revision: 1.3 $ $Date: 2002/01/04
 * 21:03:29 $ $Name: RELEASE_2_2_1 $ This file is part of NanoXML 2 for Java.
 * Copyright (C) 2000-2002 Marc De Scheemaecker, All Rights Reserved. This
 * software is provided 'as-is', without any express or implied warranty. In no
 * event will the authors be held liable for any damages arising from the use of
 * this software. Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and redistribute
 * it freely, subject to the following restrictions: 1. The origin of this
 * software must not be misrepresented; you must not claim that you wrote the
 * original software. If you use this software in a product, an acknowledgment
 * in the product documentation would be appreciated but is not required. 2.
 * Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software. 3. This notice may not be
 * removed or altered from any source distribution.
 */
package org.freeplane.n3.nanoxml;

/**
 * An XMLValidationException is thrown when the XML passed to the XML parser is
 * well-formed but not valid.
 * 
 * @author Marc De Scheemaecker
 * @version $Name: RELEASE_2_2_1 $, $Revision: 1.3 $
 */
class XMLValidationException extends XMLException {
	/**
	 * An attribute has an invalid value.
	 */
	public static final int ATTRIBUTE_WITH_INVALID_VALUE = 5;
	/**
	 * Another error than those specified in this class was encountered.
	 */
	public static final int MISC_ERROR = 0;
	/**
	 * An attribute was missing.
	 */
	public static final int MISSING_ATTRIBUTE = 3;
	/**
	 * An element was missing.
	 */
	public static final int MISSING_ELEMENT = 1;
	/**
	 * A PCDATA element was missing.
	 */
	public static final int MISSING_PCDATA = 6;
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;
	/**
	 * An unexpected attribute was encountered.
	 */
	public static final int UNEXPECTED_ATTRIBUTE = 4;
	/**
	 * An unexpected element was encountered.
	 */
	public static final int UNEXPECTED_ELEMENT = 2;
	/**
	 * An unexpected PCDATA element was encountered.
	 */
	public static final int UNEXPECTED_PCDATA = 7;
	/**
	 * The name of the attribute where the exception occurred.
	 */
	private String attributeName;
	/**
	 * The value of the attribute where the exception occurred.
	 */
	private String attributeValue;
	/**
	 * The name of the element where the exception occurred.
	 */
	private String elementName;

	/**
	 * Creates a new exception.
	 * 
	 * @param errorType
	 *            the type of validity error
	 * @param systemID
	 *            the system ID from where the data came
	 * @param lineNr
	 *            the line number in the XML data where the exception occurred.
	 * @param elementName
	 *            the name of the offending element
	 * @param attributeName
	 *            the name of the offending attribute
	 * @param attributeValue
	 *            the value of the offending attribute
	 * @param msg
	 *            the message of the exception.
	 */
	public XMLValidationException(final int errorType, final String systemID, final int lineNr,
	                              final String elementName, final String attributeName, final String attributeValue,
	                              final String msg) {
		super(systemID, lineNr, null, msg + ((elementName == null) ? "" : (", element=" + elementName))
		        + ((attributeName == null) ? "" : (", attribute=" + attributeName))
		        + ((attributeValue == null) ? "" : (", value='" + attributeValue + "'")), false);
		this.elementName = elementName;
		this.attributeName = attributeName;
		this.attributeValue = attributeValue;
	}

	/**
	 * Cleans up the object when it's destroyed.
	 */
	@Override
	protected void finalize() throws Throwable {
		elementName = null;
		attributeName = null;
		attributeValue = null;
		super.finalize();
	}

	/**
	 * Returns the name of the attribute in which the validation is violated. If
	 * there is no current attribute, null is returned.
	 */
	public String getAttributeName() {
		return attributeName;
	}

	/**
	 * Returns the value of the attribute in which the validation is violated.
	 * If there is no current attribute, null is returned.
	 */
	public String getAttributeValue() {
		return attributeValue;
	}

	/**
	 * Returns the name of the element in which the validation is violated. If
	 * there is no current element, null is returned.
	 */
	public String getElementName() {
		return elementName;
	}
}