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/*
* 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: XSLTElementProcessor.java 469688 2006-10-31 22:39:43Z minchau $
*/
package org.apache.xalan.processor;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import javax.xml.transform.TransformerException;
import org.apache.xalan.res.XSLMessages;
import org.apache.xalan.res.XSLTErrorResources;
import org.apache.xalan.templates.ElemTemplateElement;
import org.apache.xml.utils.IntStack;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.AttributesImpl;
/**
* This class acts as the superclass for all stylesheet element
* processors, and deals with things that are common to all elements.
* @see XSLT DTD
*/
public class XSLTElementProcessor extends ElemTemplateElement
{
static final long serialVersionUID = 5597421564955304421L;
/**
* Construct a processor for top-level elements.
* @see XSLT DTD
*/
XSLTElementProcessor(){}
private IntStack m_savedLastOrder;
/**
* The element definition that this processor conforms to.
*/
private XSLTElementDef m_elemDef;
/**
* Get the element definition that belongs to this element.
*
* @return The element definition object that produced and constrains this element.
*/
XSLTElementDef getElemDef()
{
return m_elemDef;
}
/**
* Set the element definition that belongs to this element.
*
* @param def The element definition object that produced and constrains this element.
*/
void setElemDef(XSLTElementDef def)
{
m_elemDef = def;
}
/**
* Resolve an external entity.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param publicId The public identifer, or null if none is
* available.
* @param systemId The system identifier provided in the XML
* document.
* @return The new input source, or null to require the
* default behaviour.
*/
public InputSource resolveEntity(
StylesheetHandler handler, String publicId, String systemId)
throws org.xml.sax.SAXException
{
return null;
}
/**
* Receive notification of a notation declaration.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param name The notation name.
* @param publicId The notation public identifier, or null if not
* available.
* @param systemId The notation system identifier.
* @see org.xml.sax.DTDHandler#notationDecl
*/
public void notationDecl(StylesheetHandler handler, String name,
String publicId, String systemId)
{
// no op
}
/**
* Receive notification of an unparsed entity declaration.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param name The entity name.
* @param publicId The entity public identifier, or null if not
* available.
* @param systemId The entity system identifier.
* @param notationName The name of the associated notation.
* @see org.xml.sax.DTDHandler#unparsedEntityDecl
*/
public void unparsedEntityDecl(StylesheetHandler handler, String name,
String publicId, String systemId,
String notationName)
{
// no op
}
/**
* Receive notification of the start of the non-text event. This
* is sent to the current processor when any non-text event occurs.
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
*/
public void startNonText(StylesheetHandler handler) throws org.xml.sax.SAXException
{
// no op
}
/**
* Receive notification of the start of an element.
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param uri The Namespace URI, or an empty string.
* @param localName The local name (without prefix), or empty string if not namespace processing.
* @param rawName The qualified name (with prefix).
* @param attributes The specified or defaulted attributes.
*/
public void startElement(
StylesheetHandler handler, String uri, String localName, String rawName, Attributes attributes)
throws org.xml.sax.SAXException
{
if (m_savedLastOrder == null)
m_savedLastOrder = new IntStack();
m_savedLastOrder.push(getElemDef().getLastOrder());
getElemDef().setLastOrder(-1);
}
/**
* Receive notification of the end of an element.
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param uri The Namespace URI, or an empty string.
* @param localName The local name (without prefix), or empty string if not namespace processing.
* @param rawName The qualified name (with prefix).
*/
public void endElement(
StylesheetHandler handler, String uri, String localName, String rawName)
throws org.xml.sax.SAXException
{
if (m_savedLastOrder != null && !m_savedLastOrder.empty())
getElemDef().setLastOrder(m_savedLastOrder.pop());
if (!getElemDef().getRequiredFound())
handler.error(XSLTErrorResources.ER_REQUIRED_ELEM_NOT_FOUND, new Object[]{getElemDef().getRequiredElem()}, null);
}
/**
* Receive notification of character data inside an element.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param ch The characters.
* @param start The start position in the character array.
* @param length The number of characters to use from the
* character array.
*/
public void characters(
StylesheetHandler handler, char ch[], int start, int length)
throws org.xml.sax.SAXException
{
handler.error(XSLTErrorResources.ER_CHARS_NOT_ALLOWED, null, null);//"Characters are not allowed at this point in the document!",
//null);
}
/**
* Receive notification of ignorable whitespace in element content.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param ch The whitespace characters.
* @param start The start position in the character array.
* @param length The number of characters to use from the
* character array.
*/
public void ignorableWhitespace(
StylesheetHandler handler, char ch[], int start, int length)
throws org.xml.sax.SAXException
{
// no op
}
/**
* Receive notification of a processing instruction.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param target The processing instruction target.
* @param data The processing instruction data, or null if
* none is supplied.
*/
public void processingInstruction(
StylesheetHandler handler, String target, String data)
throws org.xml.sax.SAXException
{
// no op
}
/**
* Receive notification of a skipped entity.
*
*
* @param handler non-null reference to current StylesheetHandler that is constructing the Templates.
* @param name The name of the skipped entity.
*/
public void skippedEntity(StylesheetHandler handler, String name)
throws org.xml.sax.SAXException
{
// no op
}
/**
* Set the properties of an object from the given attribute list.
* @param handler The stylesheet's Content handler, needed for
* error reporting.
* @param rawName The raw name of the owner element, needed for
* error reporting.
* @param attributes The list of attributes.
* @param target The target element where the properties will be set.
*/
void setPropertiesFromAttributes(
StylesheetHandler handler, String rawName, Attributes attributes,
ElemTemplateElement target)
throws org.xml.sax.SAXException
{
setPropertiesFromAttributes(handler, rawName, attributes, target, true);
}
/**
* Set the properties of an object from the given attribute list.
* @param handler The stylesheet's Content handler, needed for
* error reporting.
* @param rawName The raw name of the owner element, needed for
* error reporting.
* @param attributes The list of attributes.
* @param target The target element where the properties will be set.
* @param throwError True if it should throw an error if an
* attribute is not defined.
* @return the attributes not allowed on this element.
*
* @throws TransformerException
*/
Attributes setPropertiesFromAttributes(
StylesheetHandler handler, String rawName, Attributes attributes,
ElemTemplateElement target, boolean throwError)
throws org.xml.sax.SAXException
{
XSLTElementDef def = getElemDef();
AttributesImpl undefines = null;
boolean isCompatibleMode = ((null != handler.getStylesheet()
&& handler.getStylesheet().getCompatibleMode())
|| !throwError);
if (isCompatibleMode)
undefines = new AttributesImpl();
// Keep track of which XSLTAttributeDefs have been processed, so
// I can see which default values need to be set.
List processedDefs = new ArrayList();
// Keep track of XSLTAttributeDefs that were invalid
List errorDefs = new ArrayList();
int nAttrs = attributes.getLength();
for (int i = 0; i < nAttrs; i++)
{
String attrUri = attributes.getURI(i);
// Hack for Crimson. -sb
if((null != attrUri) && (attrUri.length() == 0)
&& (attributes.getQName(i).startsWith("xmlns:") ||
attributes.getQName(i).equals("xmlns")))
{
attrUri = org.apache.xalan.templates.Constants.S_XMLNAMESPACEURI;
}
String attrLocalName = attributes.getLocalName(i);
XSLTAttributeDef attrDef = def.getAttributeDef(attrUri, attrLocalName);
if (null == attrDef)
{
if (!isCompatibleMode)
{
// Then barf, because this element does not allow this attribute.
handler.error(XSLTErrorResources.ER_ATTR_NOT_ALLOWED, new Object[]{attributes.getQName(i), rawName}, null);//"\""+attributes.getQName(i)+"\""
//+ " attribute is not allowed on the " + rawName
// + " element!", null);
}
else
{
undefines.addAttribute(attrUri, attrLocalName,
attributes.getQName(i),
attributes.getType(i),
attributes.getValue(i));
}
}
else
{
// Can we switch the order here:
boolean success = attrDef.setAttrValue(handler, attrUri, attrLocalName,
attributes.getQName(i), attributes.getValue(i),
target);
// Now we only add the element if it passed a validation check
if (success)
processedDefs.add(attrDef);
else
errorDefs.add(attrDef);
}
}
XSLTAttributeDef[] attrDefs = def.getAttributes();
int nAttrDefs = attrDefs.length;
for (int i = 0; i < nAttrDefs; i++)
{
XSLTAttributeDef attrDef = attrDefs[i];
String defVal = attrDef.getDefault();
if (null != defVal)
{
if (!processedDefs.contains(attrDef))
{
attrDef.setDefAttrValue(handler, target);
}
}
if (attrDef.getRequired())
{
if ((!processedDefs.contains(attrDef)) && (!errorDefs.contains(attrDef)))
handler.error(
XSLMessages.createMessage(
XSLTErrorResources.ER_REQUIRES_ATTRIB, new Object[]{ rawName,
attrDef.getName() }), null);
}
}
return undefines;
}
}
