- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: XPathException.java,v 1.12 2004/02/17 04:30:02 minchau Exp $
- */
- package com.sun.org.apache.xpath.internal;
-
- import javax.xml.transform.TransformerException;
-
- import org.w3c.dom.Node;
-
- /**
- * 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.
- * @xsl.usage general
- */
- 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;
- }
- }