- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. 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 acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * 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 APACHE SOFTWARE FOUNDATION 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 on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xpath;
-
- import java.io.PrintStream;
- import java.io.PrintWriter;
-
- import javax.xml.transform.TransformerException;
- import org.w3c.dom.Node;
-
- /**
- * <meta name="usage" content="general"/>
- * This class implements an exception object that all
- * XPath classes will throw in case of an error. This class
- * extends TransformerException, and may hold other exceptions. In the
- * case of nested exceptions, printStackTrace will dump
- * all the traces of the nested exceptions, not just the trace
- * of this object.
- */
- public class XPathException extends TransformerException
- {
-
- /** The home of the expression that caused the error.
- * @serial */
- Object m_styleNode = null;
-
- /**
- * Get the stylesheet node from where this error originated.
- * @return The stylesheet node from where this error originated, or null.
- */
- public Object getStylesheetNode()
- {
- return m_styleNode;
- }
-
- /**
- * Set the stylesheet node from where this error originated.
- * @param styleNode The stylesheet node from where this error originated, or null.
- */
- public void setStylesheetNode(Object styleNode)
- {
- m_styleNode = styleNode;
- }
-
-
- /** A nested exception.
- * @serial */
- protected Exception m_exception;
-
- /**
- * Create an XPathException object that holds
- * an error message.
- * @param message The error message.
- */
- public XPathException(String message, ExpressionNode ex)
- {
- super(message);
- this.setLocator(ex);
- setStylesheetNode(getStylesheetNode(ex));
- }
-
- /**
- * Create an XPathException object that holds
- * an error message.
- * @param message The error message.
- */
- public XPathException(String message)
- {
- super(message);
- }
-
-
- /**
- * Get the XSLT ElemVariable that this sub-expression references. In order for
- * this to work, the SourceLocator must be the owning ElemTemplateElement.
- * @return The dereference to the ElemVariable, or null if not found.
- */
- public org.w3c.dom.Node getStylesheetNode(ExpressionNode ex)
- {
-
- ExpressionNode owner = getExpressionOwner(ex);
-
- if (null != owner && owner instanceof org.w3c.dom.Node)
- {
- return ((org.w3c.dom.Node)owner);
- }
- return null;
-
- }
-
- /**
- * Get the first non-Expression parent of this node.
- * @return null or first ancestor that is not an Expression.
- */
- protected ExpressionNode getExpressionOwner(ExpressionNode ex)
- {
- ExpressionNode parent = ex.exprGetParent();
- while((null != parent) && (parent instanceof Expression))
- parent = parent.exprGetParent();
- return parent;
- }
-
-
-
- /**
- * Create an XPathException object that holds
- * an error message and the stylesheet node that
- * the error originated from.
- * @param message The error message.
- * @param styleNode The stylesheet node that the error originated from.
- */
- public XPathException(String message, Object styleNode)
- {
-
- super(message);
-
- m_styleNode = styleNode;
- }
-
- /**
- * Create an XPathException object that holds
- * an error message, the stylesheet node that
- * the error originated from, and another exception
- * that caused this exception.
- * @param message The error message.
- * @param styleNode The stylesheet node that the error originated from.
- * @param e The exception that caused this exception.
- */
- public XPathException(String message, Node styleNode, Exception e)
- {
-
- super(message);
-
- m_styleNode = styleNode;
- this.m_exception = e;
- }
-
- /**
- * Create an XPathException object that holds
- * an error message, and another exception
- * that caused this exception.
- * @param message The error message.
- * @param e The exception that caused this exception.
- */
- public XPathException(String message, Exception e)
- {
-
- super(message);
-
- this.m_exception = e;
- }
-
- /**
- * Print the the trace of methods from where the error
- * originated. This will trace all nested exception
- * objects, as well as this object.
- * @param s The stream where the dump will be sent to.
- */
- public void printStackTrace(java.io.PrintStream s)
- {
-
- if (s == null)
- s = System.err;
-
- try
- {
- super.printStackTrace(s);
- }
- catch (Exception e){}
-
- Throwable exception = m_exception;
-
- for (int i = 0; (i < 10) && (null != exception); i++)
- {
- s.println("---------");
- exception.printStackTrace(s);
-
- if (exception instanceof TransformerException)
- {
- TransformerException se = (TransformerException) exception;
- Throwable prev = exception;
-
- exception = se.getException();
-
- if (prev == exception)
- break;
- }
- else
- {
- exception = null;
- }
- }
- }
-
- /**
- * Find the most contained message.
- *
- * @return The error message of the originating exception.
- */
- public String getMessage()
- {
-
- String lastMessage = super.getMessage();
- Throwable exception = m_exception;
-
- while (null != exception)
- {
- String nextMessage = exception.getMessage();
-
- if (null != nextMessage)
- lastMessage = nextMessage;
-
- if (exception instanceof TransformerException)
- {
- TransformerException se = (TransformerException) exception;
- Throwable prev = exception;
-
- exception = se.getException();
-
- if (prev == exception)
- break;
- }
- else
- {
- exception = null;
- }
- }
-
- return (null != lastMessage) ? lastMessage : "";
- }
-
- /**
- * Print the the trace of methods from where the error
- * originated. This will trace all nested exception
- * objects, as well as this object.
- * @param s The writer where the dump will be sent to.
- */
- public void printStackTrace(java.io.PrintWriter s)
- {
-
- if (s == null)
- s = new java.io.PrintWriter(System.err);
-
- try
- {
- super.printStackTrace(s);
- }
- catch (Exception e){}
-
- Throwable exception = m_exception;
-
- for (int i = 0; (i < 10) && (null != exception); i++)
- {
- s.println("---------");
-
- try
- {
- exception.printStackTrace(s);
- }
- catch (Exception e)
- {
- s.println("Could not print stack trace...");
- }
-
- if (exception instanceof TransformerException)
- {
- TransformerException se = (TransformerException) exception;
- Throwable prev = exception;
-
- exception = se.getException();
-
- if (prev == exception)
- {
- exception = null;
-
- break;
- }
- }
- else
- {
- exception = null;
- }
- }
- }
-
- /**
- * Return the embedded exception, if any.
- * Overrides javax.xml.transform.TransformerException.getException().
- *
- * @return The embedded exception, or null if there is none.
- */
- public Throwable getException()
- {
- return m_exception;
- }
- }