Java XPathStylesheetDOM3Exception類代碼示例

import org.apache.xpath.domapi.XPathStylesheetDOM3Exception; //導入依賴的package包/類
/**
  * This method is added to support DOM 3 XPath API.
  * <p>
  * This method is exactly like error(String, Object[]); except that
  * the underlying TransformerException is 
  * XpathStylesheetDOM3Exception (which extends TransformerException).
  * <p>
  * So older XPath code in Xalan is not affected by this. To older XPath code
  * the behavior of whether error() or errorForDOM3() is called because it is
  * always catching TransformerException objects and is oblivious to
  * the new subclass of XPathStylesheetDOM3Exception. Older XPath code 
  * runs as before.
  * <p>
  * However, newer DOM3 XPath code upon catching a TransformerException can
  * can check if the exception is an instance of XPathStylesheetDOM3Exception
  * and take appropriate action.
  * 
  * @param msg An error msgkey that corresponds to one of the constants found 
  *            in {@link org.apache.xpath.res.XPATHErrorResources}, which is 
  *            a key for a format string.
  * @param args An array of arguments represented in the format string, which 
  *             may be null.
  *
  * @throws TransformerException if the current ErrorListoner determines to 
  *                              throw an exception.
  */
 void errorForDOM3(String msg, Object[] args) throws TransformerException
 {

String fmsg = XSLMessages.createXPATHMessage(msg, args);
ErrorListener ehandler = this.getErrorListener();

TransformerException te = new XPathStylesheetDOM3Exception(fmsg, m_sourceLocator);
if (null != ehandler)
{
  // TO DO: Need to get stylesheet Locator from here.
  ehandler.fatalError(te);
}
else
{
  // System.err.println(fmsg);
  throw te;
}
 }
 

import org.apache.xpath.domapi.XPathStylesheetDOM3Exception; //導入依賴的package包/類
/**
 * Creates a parsed XPath expression with resolved namespaces. This is
 * useful when an expression will be reused in an application since it makes
 * it possible to compile the expression string into a more efficient
 * internal form and preresolve all namespace prefixes which occur within
 * the expression.
 * 
 * @param expression
 *            The XPath expression string to be parsed.
 * @param resolver
 *            The <code>resolver</code> permits translation of prefixes
 *            within the XPath expression into appropriate namespace URIs .
 *            If this is specified as <code>null</code>, any namespace
 *            prefix within the expression will result in
 *            <code>DOMException</code> being thrown with the code
 *            <code>NAMESPACE_ERR</code>.
 * @return The compiled form of the XPath expression.
 * @exception XPathException
 *                INVALID_EXPRESSION_ERR: Raised if the expression is not
 *                legal according to the rules of the
 *                <code>XPathEvaluator</code>i
 * @exception DOMException
 *                NAMESPACE_ERR: Raised if the expression contains namespace
 *                prefixes which cannot be resolved by the specified
 *                <code>XPathNSResolver</code>.
 * 
 * @see org.w3c.dom.xpath.XPathEvaluator#createExpression(String,
 *      XPathNSResolver)
 */
@Override
public XPathExpression createExpression(String expression, XPathNSResolver resolver)
		throws XPathException, DOMException {

	try {

		// If the resolver is null, create a dummy prefix resolver
		XPath xpath = new XPath(expression, null,
				null == resolver ? new DummyPrefixResolver() : (PrefixResolver) resolver, XPath.SELECT);

		return new XPathExpressionImpl(xpath, m_doc);

	} catch (TransformerException e) {
		// Need to pass back exception code DOMException.NAMESPACE_ERR also.
		// Error found in DOM Level 3 XPath Test Suite.
		if (e instanceof XPathStylesheetDOM3Exception) {
			throw new DOMException(DOMException.NAMESPACE_ERR, e.getMessageAndLocation());
		} else {
			throw new XPathException(XPathException.INVALID_EXPRESSION_ERR, e.getMessageAndLocation());
		}

	}
}