package net.sf.saxon;
import net.sf.saxon.event.CommentStripper;
import net.sf.saxon.event.ReceivingContentHandler;
import net.sf.saxon.event.StartTagBuffer;
import net.sf.saxon.style.StyleNodeFactory;
import net.sf.saxon.style.StylesheetStripper;
import net.sf.saxon.style.UseWhenFilter;
import net.sf.saxon.trans.CompilerInfo;
import net.sf.saxon.trans.XPathException;
import net.sf.saxon.tree.DocumentImpl;
import net.sf.saxon.tree.TreeBuilder;
import org.xml.sax.Locator;
import javax.xml.transform.Templates;
import javax.xml.transform.TransformerException;
import javax.xml.transform.sax.TemplatesHandler;
/**
* <b>TemplatesHandlerImpl</b> implements the javax.xml.transform.sax.TemplatesHandler
* interface. It acts as a ContentHandler which receives a stream of
* SAX events representing a stylesheet, and returns a Templates object that
* represents the compiled form of this stylesheet.
* @author Michael H. Kay
*/
public class TemplatesHandlerImpl extends ReceivingContentHandler implements TemplatesHandler {
private TreeBuilder builder;
private StyleNodeFactory nodeFactory;
private Templates templates;
private String systemId;
/**
* Create a TemplatesHandlerImpl and initialise variables. The constructor is protected, because
* the Filter should be created using newTemplatesHandler() in the SAXTransformerFactory
* class
* @param config the Saxon configuration
*/
protected TemplatesHandlerImpl(Configuration config) {
setPipelineConfiguration(config.makePipelineConfiguration());
nodeFactory = config.getStyleNodeFactory();
builder = new TreeBuilder();
builder.setPipelineConfiguration(getPipelineConfiguration());
builder.setNodeFactory(nodeFactory);
builder.setLineNumbering(true);
StartTagBuffer startTagBuffer = new StartTagBuffer();
UseWhenFilter useWhenFilter = new UseWhenFilter(startTagBuffer);
useWhenFilter.setUnderlyingReceiver(builder);
useWhenFilter.setPipelineConfiguration(getPipelineConfiguration());
startTagBuffer.setUnderlyingReceiver(useWhenFilter);
startTagBuffer.setPipelineConfiguration(getPipelineConfiguration());
StylesheetStripper styleStripper = new StylesheetStripper();
styleStripper.setUnderlyingReceiver(startTagBuffer);
styleStripper.setPipelineConfiguration(getPipelineConfiguration());
CommentStripper commentStripper = new CommentStripper();
commentStripper.setUnderlyingReceiver(styleStripper);
commentStripper.setPipelineConfiguration(getPipelineConfiguration());
setReceiver(commentStripper);
}
/**
* Get the Templates object to be used for a transformation
*/
public Templates getTemplates() {
if (templates==null) {
DocumentImpl doc = (DocumentImpl)builder.getCurrentRoot();
builder.reset();
if (doc==null) {
return null;
}
final Configuration config = getConfiguration();
CompilerInfo info = new CompilerInfo(config.getDefaultXsltCompilerInfo());
PreparedStylesheet sheet = new PreparedStylesheet(config, info);
try {
sheet.setStylesheetDocument(doc, nodeFactory);
templates = sheet;
} catch (XPathException tce) {
if (!tce.hasBeenReported()) {
try {
info.getErrorListener().fatalError(tce);
} catch (TransformerException e2) {
//
}
}
// don't know why we aren't allowed to just throw it!
throw new IllegalStateException(tce.getMessage());
}
}
return templates;
}
/**
* Set the SystemId of the document. Note that if this method is called, any locator supplied
* to the setDocumentLocator() method is ignored. This also means that no line number information
* will be available.
* @param url the system ID (base URI) of the stylesheet document, which will be used in any error
* reporting and also for resolving relative URIs in xsl:include and xsl:import. It will also form
* the static base URI in the static context of XPath expressions.
*/
public void setSystemId(String url) {
systemId = url;
builder.setSystemId(url);
super.setDocumentLocator(new Locator() {
public int getColumnNumber() {
return -1;
}
public int getLineNumber() {
return -1;
}
public String getPublicId() {
return null;
}
public String getSystemId() {
return systemId;
}
});
}
/**
* Callback interface for SAX: not for application use
*/
public void setDocumentLocator (final Locator locator) {
// If the user has called setSystemId(), we use that system ID in preference to this one,
// which probably comes from the XML parser possibly via some chain of SAX filters
if (systemId == null) {
super.setDocumentLocator(locator);
}
}
/**
* Get the systemId of the document
*/
public String getSystemId() {
return systemId;
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (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.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): None
//