/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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: ProcessorNamespaceAlias.java 468640 2006-10-28 06:53:53Z minchau $
*/
package org.apache.xalan.processor;
import org.apache.xalan.res.XSLTErrorResources;
import org.apache.xalan.templates.NamespaceAlias;
import org.xml.sax.Attributes;
/**
* TransformerFactory for xsl:namespace-alias markup.
* A stylesheet can use the xsl:namespace-alias element to
* declare that one namespace URI is an alias for another namespace URI.
* <pre>
* <!ELEMENT xsl:namespace-alias EMPTY>
* <!ATTLIST xsl:namespace-alias
* stylesheet-prefix CDATA #REQUIRED
* result-prefix CDATA #REQUIRED
* >
* </pre>
* @see <a href="http://www.w3.org/TR/xslt#dtd">XSLT DTD</a>
* @see <a href="http://www.w3.org/TR/xslt#literal-result-element">literal-result-element in XSLT Specification</a>
*/
class ProcessorNamespaceAlias extends XSLTElementProcessor
{
static final long serialVersionUID = -6309867839007018964L;
/**
* Receive notification of the start of an xsl:namespace-alias element.
*
* @param handler The calling StylesheetHandler/TemplatesBuilder.
* @param uri The Namespace URI, or the empty string if the
* element has no Namespace URI or if Namespace
* processing is not being performed.
* @param localName The local name (without prefix), or the
* empty string if Namespace processing is not being
* performed.
* @param rawName The raw XML 1.0 name (with prefix), or the
* empty string if raw names are not available.
* @param attributes The attributes attached to the element. If
* there are no attributes, it shall be an empty
* Attributes object.
*/
public void startElement(
StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
throws org.xml.sax.SAXException
{
final String resultNS;
NamespaceAlias na = new NamespaceAlias(handler.nextUid());
setPropertiesFromAttributes(handler, rawName, attributes, na);
String prefix = na.getStylesheetPrefix();
if(prefix.equals("#default"))
{
prefix = "";
na.setStylesheetPrefix(prefix);
}
String stylesheetNS = handler.getNamespaceForPrefix(prefix);
na.setStylesheetNamespace(stylesheetNS);
prefix = na.getResultPrefix();
if(prefix.equals("#default"))
{
prefix = "";
na.setResultPrefix(prefix);
resultNS = handler.getNamespaceForPrefix(prefix);
if(null == resultNS)
handler.error(XSLTErrorResources.ER_INVALID_NAMESPACE_URI_VALUE_FOR_RESULT_PREFIX_FOR_DEFAULT, null, null);
}
else
{
resultNS = handler.getNamespaceForPrefix(prefix);
if(null == resultNS)
handler.error(XSLTErrorResources.ER_INVALID_NAMESPACE_URI_VALUE_FOR_RESULT_PREFIX, new Object[] {prefix}, null);
}
na.setResultNamespace(resultNS);
handler.getStylesheet().setNamespaceAlias(na);
handler.getStylesheet().appendChild(na);
}
}