/*
* 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: TransformerImpl.java 475979 2006-11-16 23:32:48Z minchau $
*/
package org.apache.xalan.transformer;
import java.io.IOException;
import java.io.StringWriter;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Stack;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.ErrorListener;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.SourceLocator;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.URIResolver;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.xalan.extensions.ExtensionsTable;
import org.apache.xalan.res.XSLMessages;
import org.apache.xalan.res.XSLTErrorResources;
import org.apache.xml.serializer.Method;
import org.apache.xml.serializer.Serializer;
import org.apache.xml.serializer.SerializerFactory;
import org.apache.xalan.templates.AVT;
import org.apache.xalan.templates.Constants;
import org.apache.xalan.templates.ElemAttributeSet;
import org.apache.xalan.templates.ElemForEach;
import org.apache.xalan.templates.ElemSort;
import org.apache.xalan.templates.ElemTemplate;
import org.apache.xalan.templates.ElemTemplateElement;
import org.apache.xalan.templates.ElemTextLiteral;
import org.apache.xalan.templates.ElemVariable;
import org.apache.xalan.templates.OutputProperties;
import org.apache.xalan.templates.Stylesheet;
import org.apache.xalan.templates.StylesheetComposed;
import org.apache.xalan.templates.StylesheetRoot;
import org.apache.xalan.templates.XUnresolvedVariable;
import org.apache.xml.dtm.DTM;
import org.apache.xml.dtm.DTMIterator;
import org.apache.xml.dtm.DTMManager;
import org.apache.xml.dtm.DTMWSFilter;
import org.apache.xml.serializer.ToSAXHandler;
import org.apache.xml.serializer.ToTextStream;
import org.apache.xml.serializer.ToXMLSAXHandler;
import org.apache.xml.serializer.SerializationHandler;
import org.apache.xml.utils.BoolStack;
import org.apache.xml.utils.DOMBuilder;
import org.apache.xml.utils.NodeVector;
import org.apache.xml.utils.ObjectPool;
import org.apache.xml.utils.ObjectStack;
import org.apache.xml.utils.QName;
import org.apache.xml.utils.SAXSourceLocator;
import org.apache.xml.utils.ThreadControllerWrapper;
import org.apache.xpath.Arg;
import org.apache.xpath.ExtensionsProvider;
import org.apache.xpath.VariableStack;
import org.apache.xpath.XPathContext;
import org.apache.xpath.functions.FuncExtFunction;
import org.apache.xpath.objects.XObject;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.ext.LexicalHandler;
/**
* This class implements the
* {@link javax.xml.transform.Transformer} interface, and is the core
* representation of the transformation execution.</p>
* @xsl.usage advanced
*/
public class TransformerImpl extends Transformer
implements Runnable, DTMWSFilter, ExtensionsProvider, org.apache.xml.serializer.SerializerTrace
{
// Synch object to gaurd against setting values from the TrAX interface
// or reentry while the transform is going on.
/** NEEDSDOC Field m_reentryGuard */
private Boolean m_reentryGuard = new Boolean(true);
/**
* This is null unless we own the stream.
*/
private java.io.FileOutputStream m_outputStream = null;
/** The thread that the transformer is running on. */
private Thread m_transformThread;
/** The base URL of the source tree. */
private String m_urlOfSource = null;
/** The Result object at the start of the transform, if any. */
private Result m_outputTarget = null;
/**
* The output format object set by the user. May be null.
*/
private OutputProperties m_outputFormat;
/**
* The content handler for the source input tree.
*/
ContentHandler m_inputContentHandler;
/**
* The content handler for the result tree.
*/
private ContentHandler m_outputContentHandler = null;
// /*
// * Use member variable to store param variables as they're
// * being created, use member variable so we don't
// * have to create a new vector every time.
// */
// private Vector m_newVars = new Vector();
/**
* A pool of ResultTreeHandlers, for serialization of a subtree to text.
* Please note that each of these also holds onto a Text Serializer.
*/
private ObjectPool m_textResultHandlerObjectPool =
new ObjectPool(ToTextStream.class);
/**
* Related to m_textResultHandlerObjectPool, this is a pool of
* StringWriters, which are passed to the Text Serializers.
* (I'm not sure if this is really needed any more. -sb)
*/
private ObjectPool m_stringWriterObjectPool =
new ObjectPool(StringWriter.class);
/**
* A static text format object, which can be used over and
* over to create the text serializers.
*/
private OutputProperties m_textformat = new OutputProperties(Method.TEXT);
// Commenteded out in response to problem reported by
// Nicola Brown <Nicola.Brown@jacobsrimell.com>
// /**
// * Flag to let us know if an exception should be reported inside the
// * postExceptionFromThread method. This is needed if the transform is
// * being generated from SAX events, and thus there is no central place
// * to report the exception from. (An exception is usually picked up in
// * the main thread from the transform thread in {@link #transform(Source source)}
// * from {@link #getExceptionThrown()}. )
// */
// private boolean m_reportInPostExceptionFromThread = false;
/**
* A node vector used as a stack to track the current
* ElemTemplateElement. Needed for the
* org.apache.xalan.transformer.TransformState interface,
* so a tool can discover the calling template. Note the use of an array
* for this limits the recursion depth to 4K.
*/
ObjectStack m_currentTemplateElements
= new ObjectStack(XPathContext.RECURSIONLIMIT);
/** The top of the currentTemplateElements stack. */
//int m_currentTemplateElementsTop = 0;
/**
* A node vector used as a stack to track the current
* ElemTemplate that was matched.
* Needed for the
* org.apache.xalan.transformer.TransformState interface,
* so a tool can discover the matched template
*/
Stack m_currentMatchTemplates = new Stack();
/**
* A node vector used as a stack to track the current
* node that was matched.
* Needed for the
* org.apache.xalan.transformer.TransformState interface,
* so a tool can discover the matched
* node.
*/
NodeVector m_currentMatchedNodes = new NodeVector();
/**
* The root of a linked set of stylesheets.
*/
private StylesheetRoot m_stylesheetRoot = null;
/**
* If this is set to true, do not warn about pattern
* match conflicts.
*/
private boolean m_quietConflictWarnings = true;
/**
* The liason to the XML parser, so the XSL processor
* can handle included files, and the like, and do the
* initial parse of the XSL document.
*/
private XPathContext m_xcontext;
/**
* Output handler to bottleneck SAX events.
*/
private SerializationHandler m_serializationHandler;
/** The key manager, which manages xsl:keys. */
private KeyManager m_keyManager = new KeyManager();
/**
* Stack for the purposes of flagging infinite recursion with
* attribute sets.
*/
Stack m_attrSetStack = null;
/**
* The table of counters for xsl:number support.
*/
CountersTable m_countersTable = null;
/**
* Is > 0 when we're processing a for-each.
*/
BoolStack m_currentTemplateRuleIsNull = new BoolStack();
/**
* Keeps track of the result delivered by any EXSLT <code>func:result</code>
* instruction that has been executed for the currently active EXSLT
* <code>func:function</code>
*/
ObjectStack m_currentFuncResult = new ObjectStack();
/**
* The message manager, which manages error messages, warning
* messages, and other types of message events.
*/
private MsgMgr m_msgMgr;
/**
* The flag for the setting of the optimize feature;
* This flag should have the same value as the FEATURE_OPTIMIZE feature
* which is set by the TransformerFactory.setAttribut() method before a
* Transformer is created
*/
private boolean m_optimizer = true;
/**
* The flag for the setting of the incremental feature;
* This flag should have the same value as the FEATURE_INCREMENTAL feature
* which is set by the TransformerFactory.setAttribut() method before a
* Transformer is created
*/
private boolean m_incremental = false;
/**
* The flag for the setting of the source_location feature;
* This flag should have the same value as the FEATURE_SOURCE_LOCATION feature
* which is set by the TransformerFactory.setAttribut() method before a
* Transformer is created
*/
private boolean m_source_location = false;
/**
* The SAX error handler, where errors and warnings are sent.
*/
private ErrorListener m_errorHandler =
new org.apache.xml.utils.DefaultErrorHandler(false);
/**
* If the transform thread throws an exception, the exception needs to
* be stashed away so that the main thread can pass it on to the
* client.
*/
private Exception m_exceptionThrown = null;
/**
* This is needed for support of setSourceTreeDocForThread(Node doc),
* which must be called in order for the transform thread's run
* method to obtain the root of the source tree to be transformed.
*/
private int m_doc;
/** Flag to to tell if the tranformer needs to be reset. */
private boolean m_hasBeenReset = false;
/** NEEDSDOC Field m_shouldReset */
private boolean m_shouldReset = true;
/**
* A stack of current template modes.
*/
private Stack m_modes = new Stack();
//==========================================================
// SECTION: Constructor
//==========================================================
/**
* Construct a TransformerImpl.
*
* @param stylesheet The root of the stylesheet tree.
*/
public TransformerImpl(StylesheetRoot stylesheet)
// throws javax.xml.transform.TransformerException
{
m_optimizer = stylesheet.getOptimizer();
m_incremental = stylesheet.getIncremental();
m_source_location = stylesheet.getSource_location();
setStylesheet(stylesheet);
XPathContext xPath = new XPathContext(this);
xPath.setIncremental(m_incremental);
xPath.getDTMManager().setIncremental(m_incremental);
xPath.setSource_location(m_source_location);
xPath.getDTMManager().setSource_location(m_source_location);
if (stylesheet.isSecureProcessing())
xPath.setSecureProcessing(true);
setXPathContext(xPath);
getXPathContext().setNamespaceContext(stylesheet);
}
// ================ ExtensionsTable ===================
/**
* The table of ExtensionHandlers.
*/
private ExtensionsTable m_extensionsTable = null;
/**
* Get the extensions table object.
*
* @return The extensions table.
*/
public ExtensionsTable getExtensionsTable()
{
return m_extensionsTable;
}
/**
* If the stylesheet contains extensions, set the extensions table object.
*
*
* @param sroot The stylesheet.
* @throws javax.xml.transform.TransformerException
*/
void setExtensionsTable(StylesheetRoot sroot)
throws javax.xml.transform.TransformerException
{
try
{
if (sroot.getExtensions() != null)
//only load extensions if secureProcessing is disabled
if(!sroot.isSecureProcessing())
m_extensionsTable = new ExtensionsTable(sroot);
}
catch (javax.xml.transform.TransformerException te)
{te.printStackTrace();}
}
//== Implementation of the XPath ExtensionsProvider interface.
public boolean functionAvailable(String ns, String funcName)
throws javax.xml.transform.TransformerException
{
return getExtensionsTable().functionAvailable(ns, funcName);
}
public boolean elementAvailable(String ns, String elemName)
throws javax.xml.transform.TransformerException
{
return getExtensionsTable().elementAvailable(ns, elemName);
}
public Object extFunction(String ns, String funcName,
Vector argVec, Object methodKey)
throws javax.xml.transform.TransformerException
{//System.out.println("TransImpl.extFunction() " + ns + " " + funcName +" " + getExtensionsTable());
return getExtensionsTable().extFunction(ns, funcName,
argVec, methodKey,
getXPathContext().getExpressionContext());
}
public Object extFunction(FuncExtFunction extFunction, Vector argVec)
throws javax.xml.transform.TransformerException
{
return getExtensionsTable().extFunction(extFunction, argVec,
getXPathContext().getExpressionContext());
}
//=========================
/**
* Reset the state. This needs to be called after a process() call
* is invoked, if the processor is to be used again.
*/
public void reset()
{
if (!m_hasBeenReset && m_shouldReset)
{
m_hasBeenReset = true;
if (this.m_outputStream != null)
{
try
{
m_outputStream.close();
}
catch (java.io.IOException ioe){}
}
m_outputStream = null;
// I need to look more carefully at which of these really
// needs to be reset.
m_countersTable = null;
m_xcontext.reset();
m_xcontext.getVarStack().reset();
resetUserParameters();
m_currentTemplateElements.removeAllElements();
m_currentMatchTemplates.removeAllElements();
m_currentMatchedNodes.removeAllElements();
m_serializationHandler = null;
m_outputTarget = null;
m_keyManager = new KeyManager();
m_attrSetStack = null;
m_countersTable = null;
m_currentTemplateRuleIsNull = new BoolStack();
// m_xmlSource = null; // android-removed
m_doc = DTM.NULL;
// m_isTransformDone = false; // android-removed
m_transformThread = null;
// m_inputContentHandler = null;
// For now, reset the document cache each time.
m_xcontext.getSourceTreeManager().reset();
}
// m_reportInPostExceptionFromThread = false;
}
// ========= Transformer Interface Implementation ==========
/**
* Get the thread that the transform process is on.
*
* @return The thread that the transform process is on, or null.
* @xsl.usage internal
*/
public Thread getTransformThread()
{
return m_transformThread;
}
/**
* Get the thread that the transform process is on.
*
* @param t The transform thread, may be null.
* @xsl.usage internal
*/
public void setTransformThread(Thread t)
{
m_transformThread = t;
}
/** NEEDSDOC Field m_hasTransformThreadErrorCatcher */
private boolean m_hasTransformThreadErrorCatcher = false;
/**
* Return true if the transform was initiated from the transform method,
* otherwise it was probably done from a pure parse events.
*
* NEEDSDOC ($objectName$) @return
*/
public boolean hasTransformThreadErrorCatcher()
{
return m_hasTransformThreadErrorCatcher;
}
/**
* Process the source tree to SAX parse events.
* @param source The input for the source tree.
*
* @throws TransformerException
*/
public void transform(Source source) throws TransformerException
{
transform(source, true);
}
/**
* Process the source tree to SAX parse events.
* @param source The input for the source tree.
* @param shouldRelease Flag indicating whether to release DTMManager.
*
* @throws TransformerException
*/
public void transform(Source source, boolean shouldRelease) throws TransformerException
{
try
{
// Patch for bugzilla #13863. If we don't reset the namespaceContext
// then we will get a NullPointerException if transformer is reused
// (for stylesheets that use xsl:key). Not sure if this should go
// here or in reset(). -is
if(getXPathContext().getNamespaceContext() == null){
getXPathContext().setNamespaceContext(getStylesheet());
}
String base = source.getSystemId();
// If no systemID of the source, use the base of the stylesheet.
if(null == base)
{
base = m_stylesheetRoot.getBaseIdentifier();
}
// As a last resort, use the current user dir.
if(null == base)
{
String currentDir = "";
try {
currentDir = System.getProperty("user.dir");
}
catch (SecurityException se) {}// user.dir not accessible from applet
if (currentDir.startsWith(java.io.File.separator))
base = "file://" + currentDir;
else
base = "file:///" + currentDir;
base = base + java.io.File.separatorChar
+ source.getClass().getName();
}
setBaseURLOfSource(base);
DTMManager mgr = m_xcontext.getDTMManager();
/*
* According to JAXP1.2, new SAXSource()/StreamSource()
* should create an empty input tree, with a default root node.
* new DOMSource()creates an empty document using DocumentBuilder.
* newDocument(); Use DocumentBuilder.newDocument() for all 3 situations,
* since there is no clear spec. how to create an empty tree when
* both SAXSource() and StreamSource() are used.
*/
if ((source instanceof StreamSource && source.getSystemId()==null &&
((StreamSource)source).getInputStream()==null &&
((StreamSource)source).getReader()==null)||
(source instanceof SAXSource &&
((SAXSource)source).getInputSource()==null &&
((SAXSource)source).getXMLReader()==null )||
(source instanceof DOMSource && ((DOMSource)source).getNode()==null)){
try {
DocumentBuilderFactory builderF =
DocumentBuilderFactory.newInstance();
DocumentBuilder builder = builderF.newDocumentBuilder();
String systemID = source.getSystemId();
source = new DOMSource(builder.newDocument());
// Copy system ID from original, empty Source to new Source
if (systemID != null) {
source.setSystemId(systemID);
}
} catch (ParserConfigurationException e) {
fatalError(e);
}
}
DTM dtm = mgr.getDTM(source, false, this, true, true);
dtm.setDocumentBaseURI(base);
boolean hardDelete = true; // %REVIEW% I have to think about this. -sb
try
{
// NOTE: This will work because this is _NOT_ a shared DTM, and thus has
// only a single Document node. If it could ever be an RTF or other
// shared DTM, look at dtm.getDocumentRoot(nodeHandle).
this.transformNode(dtm.getDocument());
}
finally
{
if (shouldRelease)
mgr.release(dtm, hardDelete);
}
// Kick off the parse. When the ContentHandler gets
// the startDocument event, it will call transformNode( node ).
// reader.parse( xmlSource );
// This has to be done to catch exceptions thrown from
// the transform thread spawned by the STree handler.
Exception e = getExceptionThrown();
if (null != e)
{
if (e instanceof javax.xml.transform.TransformerException)
{
throw (javax.xml.transform.TransformerException) e;
}
else if (e instanceof org.apache.xml.utils.WrappedRuntimeException)
{
fatalError(
((org.apache.xml.utils.WrappedRuntimeException) e).getException());
}
else
{
throw new javax.xml.transform.TransformerException(e);
}
}
else if (null != m_serializationHandler)
{
m_serializationHandler.endDocument();
}
}
catch (org.apache.xml.utils.WrappedRuntimeException wre)
{
Throwable throwable = wre.getException();
while (throwable
instanceof org.apache.xml.utils.WrappedRuntimeException)
{
throwable =
((org.apache.xml.utils.WrappedRuntimeException) throwable).getException();
}
fatalError(throwable);
}
// Patch attributed to David Eisenberg <david@catcode.com>
catch (org.xml.sax.SAXParseException spe)
{
fatalError(spe);
}
catch (org.xml.sax.SAXException se)
{
m_errorHandler.fatalError(new TransformerException(se));
}
finally
{
m_hasTransformThreadErrorCatcher = false;
// This looks to be redundent to the one done in TransformNode.
reset();
}
}
private void fatalError(Throwable throwable) throws TransformerException
{
if (throwable instanceof org.xml.sax.SAXParseException)
m_errorHandler.fatalError(new TransformerException(throwable.getMessage(),new SAXSourceLocator((org.xml.sax.SAXParseException)throwable)));
else
m_errorHandler.fatalError(new TransformerException(throwable));
}
/**
* Get the base URL of the source.
*
*
* NEEDSDOC @param base
* @return The base URL of the source tree, or null.
*/
public void setBaseURLOfSource(String base)
{
m_urlOfSource = base;
}
/**
* Get an output property that is in effect for the
* transformation. The property specified may be a property
* that was set with setOutputProperty, or it may be a
* property specified in the stylesheet.
*
* NEEDSDOC @param qnameString
*
* @return The string value of the output property, or null
* if no property was found.
*
* @throws IllegalArgumentException If the property is not supported.
*
* @see javax.xml.transform.OutputKeys
*/
public String getOutputProperty(String qnameString)
throws IllegalArgumentException
{
String value = null;
OutputProperties props = getOutputFormat();
value = props.getProperty(qnameString);
if (null == value)
{
if (!OutputProperties.isLegalPropertyKey(qnameString))
throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_OUTPUT_PROPERTY_NOT_RECOGNIZED, new Object[]{qnameString})); //"output property not recognized: "
//+ qnameString);
}
return value;
}
/**
* Get the value of a property, without using the default properties. This
* can be used to test if a property has been explicitly set by the stylesheet
* or user.
*
* NEEDSDOC @param qnameString
*
* @return The value of the property, or null if not found.
*
* @throws IllegalArgumentException If the property is not supported,
* and is not namespaced.
*/
public String getOutputPropertyNoDefault(String qnameString)
throws IllegalArgumentException
{
String value = null;
OutputProperties props = getOutputFormat();
value = (String) props.getProperties().get(qnameString);
if (null == value)
{
if (!OutputProperties.isLegalPropertyKey(qnameString))
throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_OUTPUT_PROPERTY_NOT_RECOGNIZED, new Object[]{qnameString})); //"output property not recognized: "
// + qnameString);
}
return value;
}
/**
* This method is used to set or override the value
* of the effective xsl:output attribute values
* specified in the stylesheet.
* <p>
* The recognized standard output properties are:
* <ul>
* <li>cdata-section-elements
* <li>doctype-system
* <li>doctype-public
* <li>indent
* <li>media-type
* <li>method
* <li>omit-xml-declaration
* <li>standalone
* <li>version
* </ul>
* <p>
* For example:
* <pre>
* tran.setOutputProperty("standalone", "yes");
* </pre>
* <p>
* In the case of the cdata-section-elements property,
* the value should be a whitespace separated list of
* element names. The element name is the local name
* of the element, if it is in no namespace, or, the URI
* in braces followed immediately by the local name
* if the element is in that namespace. For example:
* <pre>
* tran.setOutputProperty(
* "cdata-section-elements",
* "elem1 {http://example.uri}elem2 elem3");
* </pre>
* <p>
* The recognized Xalan extension elements are:
* <ul>
* <li>content-handler
* <li>entities
* <li>indent-amount
* <li>line-separator
* <li>omit-meta-tag
* <li>use-url-escaping
* </ul>
* <p>
* These must be in the extension namespace of
* "http://xml.apache.org/xalan". This is accomplished
* by putting the namespace URI in braces before the
* property name, for example:
* <pre>
* tran.setOutputProperty(
* "{http://xml.apache.org/xalan}line-separator" ,
* "\n");
* </pre>
*
* @param name The property name.
* @param value The requested value for the property.
* @throws IllegalArgumentException if the property name is not legal.
*/
public void setOutputProperty(String name, String value)
throws IllegalArgumentException
{
synchronized (m_reentryGuard)
{
// Get the output format that was set by the user, otherwise get the
// output format from the stylesheet.
if (null == m_outputFormat)
{
m_outputFormat =
(OutputProperties) getStylesheet().getOutputComposed().clone();
}
if (!OutputProperties.isLegalPropertyKey(name))
throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_OUTPUT_PROPERTY_NOT_RECOGNIZED, new Object[]{name})); //"output property not recognized: "
//+ name);
m_outputFormat.setProperty(name, value);
}
}
/**
* Set the output properties for the transformation. These
* properties will override properties set in the templates
* with xsl:output.
*
* <p>If argument to this function is null, any properties
* previously set will be removed.</p>
*
* @param oformat A set of output properties that will be
* used to override any of the same properties in effect
* for the transformation.
*
* @see javax.xml.transform.OutputKeys
* @see java.util.Properties
*
* @throws IllegalArgumentException if any of the argument keys are not
* recognized and are not namespace qualified.
*/
public void setOutputProperties(Properties oformat)
throws IllegalArgumentException
{
synchronized (m_reentryGuard)
{
if (null != oformat)
{
// See if an *explicit* method was set.
String method = (String) oformat.get(OutputKeys.METHOD);
if (null != method)
m_outputFormat = new OutputProperties(method);
else if(m_outputFormat==null)
m_outputFormat = new OutputProperties();
m_outputFormat.copyFrom(oformat);
// copyFrom does not set properties that have been already set, so
// this must be called after, which is a bit in the reverse from
// what one might think.
m_outputFormat.copyFrom(m_stylesheetRoot.getOutputProperties());
}
else {
// if oformat is null JAXP says that any props previously set are removed
// and we are to revert back to those in the templates object (i.e. Stylesheet).
m_outputFormat = null;
}
}
}
/**
* Get a copy of the output properties for the transformation. These
* properties will override properties set in the templates
* with xsl:output.
*
* <p>Note that mutation of the Properties object returned will not
* effect the properties that the transformation contains.</p>
*
* @return A copy of the set of output properties in effect
* for the next transformation.
*
* NEEDSDOC ($objectName$) @return
*/
public Properties getOutputProperties()
{
return (Properties) getOutputFormat().getProperties().clone();
}
/**
* Create a result ContentHandler from a Result object, based
* on the current OutputProperties.
*
* @param outputTarget Where the transform result should go,
* should not be null.
*
* @return A valid ContentHandler that will create the
* result tree when it is fed SAX events.
*
* @throws TransformerException
*/
public SerializationHandler createSerializationHandler(Result outputTarget)
throws TransformerException
{
SerializationHandler xoh =
createSerializationHandler(outputTarget, getOutputFormat());
return xoh;
}
/**
* Create a ContentHandler from a Result object and an OutputProperties.
*
* @param outputTarget Where the transform result should go,
* should not be null.
* @param format The OutputProperties object that will contain
* instructions on how to serialize the output.
*
* @return A valid ContentHandler that will create the
* result tree when it is fed SAX events.
*
* @throws TransformerException
*/
public SerializationHandler createSerializationHandler(
Result outputTarget, OutputProperties format)
throws TransformerException
{
SerializationHandler xoh;
// If the Result object contains a Node, then create
// a ContentHandler that will add nodes to the input node.
org.w3c.dom.Node outputNode = null;
if (outputTarget instanceof DOMResult)
{
outputNode = ((DOMResult) outputTarget).getNode();
org.w3c.dom.Node nextSibling = ((DOMResult)outputTarget).getNextSibling();
org.w3c.dom.Document doc;
short type;
if (null != outputNode)
{
type = outputNode.getNodeType();
doc = (org.w3c.dom.Node.DOCUMENT_NODE == type)
? (org.w3c.dom.Document) outputNode
: outputNode.getOwnerDocument();
}
else
{
boolean isSecureProcessing = m_stylesheetRoot.isSecureProcessing();
doc = org.apache.xml.utils.DOMHelper.createDocument(isSecureProcessing);
outputNode = doc;
type = outputNode.getNodeType();
((DOMResult) outputTarget).setNode(outputNode);
}
DOMBuilder handler =
(org.w3c.dom.Node.DOCUMENT_FRAGMENT_NODE == type)
? new DOMBuilder(doc, (org.w3c.dom.DocumentFragment) outputNode)
: new DOMBuilder(doc, outputNode);
if (nextSibling != null)
handler.setNextSibling(nextSibling);
String encoding = format.getProperty(OutputKeys.ENCODING);
xoh = new ToXMLSAXHandler(handler, (LexicalHandler)handler, encoding);
}
else if (outputTarget instanceof SAXResult)
{
ContentHandler handler = ((SAXResult) outputTarget).getHandler();
if (null == handler)
throw new IllegalArgumentException(
"handler can not be null for a SAXResult");
LexicalHandler lexHandler;
if (handler instanceof LexicalHandler)
lexHandler = (LexicalHandler) handler;
else
lexHandler = null;
String encoding = format.getProperty(OutputKeys.ENCODING);
String method = format.getProperty(OutputKeys.METHOD);
ToXMLSAXHandler toXMLSAXHandler = new ToXMLSAXHandler(handler, lexHandler, encoding);
toXMLSAXHandler.setShouldOutputNSAttr(false);
xoh = toXMLSAXHandler;
String publicID = format.getProperty(OutputKeys.DOCTYPE_PUBLIC);
String systemID = format.getProperty(OutputKeys.DOCTYPE_SYSTEM);
if (systemID != null)
xoh.setDoctypeSystem(systemID);
if (publicID != null)
xoh.setDoctypePublic(publicID);
if (handler instanceof TransformerClient) {
XalanTransformState state = new XalanTransformState();
((TransformerClient)handler).setTransformState(state);
((ToSAXHandler)xoh).setTransformState(state);
}
}
// Otherwise, create a ContentHandler that will serialize the
// result tree to either a stream or a writer.
else if (outputTarget instanceof StreamResult)
{
StreamResult sresult = (StreamResult) outputTarget;
try
{
SerializationHandler serializer =
(SerializationHandler) SerializerFactory.getSerializer(format.getProperties());
if (null != sresult.getWriter())
serializer.setWriter(sresult.getWriter());
else if (null != sresult.getOutputStream())
serializer.setOutputStream(sresult.getOutputStream());
else if (null != sresult.getSystemId())
{
String fileURL = sresult.getSystemId();
if (fileURL.startsWith("file:///"))
{
if (fileURL.substring(8).indexOf(":") >0)
fileURL = fileURL.substring(8);
else
fileURL = fileURL.substring(7);
}
else if (fileURL.startsWith("file:/"))
{
if (fileURL.substring(6).indexOf(":") >0)
fileURL = fileURL.substring(6);
else
fileURL = fileURL.substring(5);
}
m_outputStream = new java.io.FileOutputStream(fileURL);
serializer.setOutputStream(m_outputStream);
xoh = serializer;
}
else
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_NO_OUTPUT_SPECIFIED, null)); //"No output specified!");
// handler = serializer.asContentHandler();
// this.setSerializer(serializer);
xoh = serializer;
}
// catch (UnsupportedEncodingException uee)
// {
// throw new TransformerException(uee);
// }
catch (IOException ioe)
{
throw new TransformerException(ioe);
}
}
else
{
throw new TransformerException(XSLMessages.createMessage(XSLTErrorResources.ER_CANNOT_TRANSFORM_TO_RESULT_TYPE, new Object[]{outputTarget.getClass().getName()})); //"Can't transform to a Result of type "
//+ outputTarget.getClass().getName()
//+ "!");
}
// before we forget, lets make the created handler hold a reference
// to the current TransformImpl object
xoh.setTransformer(this);
SourceLocator srcLocator = getStylesheet();
xoh.setSourceLocator(srcLocator);
return xoh;
}
/**
* Process the source tree to the output result.
* @param xmlSource The input for the source tree.
* @param outputTarget The output source target.
*
* @throws TransformerException
*/
public void transform(Source xmlSource, Result outputTarget)
throws TransformerException
{
transform(xmlSource, outputTarget, true);
}
/**
* Process the source tree to the output result.
* @param xmlSource The input for the source tree.
* @param outputTarget The output source target.
* @param shouldRelease Flag indicating whether to release DTMManager.
*
* @throws TransformerException
*/
public void transform(Source xmlSource, Result outputTarget, boolean shouldRelease)
throws TransformerException
{
synchronized (m_reentryGuard)
{
SerializationHandler xoh = createSerializationHandler(outputTarget);
this.setSerializationHandler(xoh);
m_outputTarget = outputTarget;
transform(xmlSource, shouldRelease);
}
}
/**
* Process the source node to the output result, if the
* processor supports the "http://xml.org/trax/features/dom/input"
* feature.
* %REVIEW% Do we need a Node version of this?
* @param node The input source node, which can be any valid DTM node.
* @param outputTarget The output source target.
*
* @throws TransformerException
*/
public void transformNode(int node, Result outputTarget)
throws TransformerException
{
SerializationHandler xoh = createSerializationHandler(outputTarget);
this.setSerializationHandler(xoh);
m_outputTarget = outputTarget;
transformNode(node);
}
/**
* Process the source node to the output result, if the
* processor supports the "http://xml.org/trax/features/dom/input"
* feature.
* %REVIEW% Do we need a Node version of this?
* @param node The input source node, which can be any valid DTM node.
*
* @throws TransformerException
*/
public void transformNode(int node) throws TransformerException
{
//dml
setExtensionsTable(getStylesheet());
// Make sure we're not writing to the same output content handler.
synchronized (m_serializationHandler)
{
m_hasBeenReset = false;
XPathContext xctxt = getXPathContext();
DTM dtm = xctxt.getDTM(node);
try
{
pushGlobalVars(node);
// ==========
// Give the top-level templates a chance to pass information into
// the context (this is mainly for setting up tables for extensions).
StylesheetRoot stylesheet = this.getStylesheet();
int n = stylesheet.getGlobalImportCount();
for (int i = 0; i < n; i++)
{
StylesheetComposed imported = stylesheet.getGlobalImport(i);
int includedCount = imported.getIncludeCountComposed();
for (int j = -1; j < includedCount; j++)
{
Stylesheet included = imported.getIncludeComposed(j);
included.runtimeInit(this);
for (ElemTemplateElement child = included.getFirstChildElem();
child != null; child = child.getNextSiblingElem())
{
child.runtimeInit(this);
}
}
}
// ===========
// System.out.println("Calling applyTemplateToNode - "+Thread.currentThread().getName());
DTMIterator dtmIter = new org.apache.xpath.axes.SelfIteratorNoPredicate();
dtmIter.setRoot(node, xctxt);
xctxt.pushContextNodeList(dtmIter);
try
{
this.applyTemplateToNode(null, null, node);
}
finally
{
xctxt.popContextNodeList();
}
// m_stylesheetRoot.getStartRule().execute(this);
// System.out.println("Done with applyTemplateToNode - "+Thread.currentThread().getName());
if (null != m_serializationHandler)
{
m_serializationHandler.endDocument();
}
}
catch (Exception se)
{
// System.out.println(Thread.currentThread().getName()+" threw an exception! "
// +se.getMessage());
// If an exception was thrown, we need to make sure that any waiting
// handlers can terminate, which I guess is best done by sending
// an endDocument.
// SAXSourceLocator
while(se instanceof org.apache.xml.utils.WrappedRuntimeException)
{
Exception e = ((org.apache.xml.utils.WrappedRuntimeException)se).getException();
if(null != e)
se = e;
}
if (null != m_serializationHandler)
{
try
{
if(se instanceof org.xml.sax.SAXParseException)
m_serializationHandler.fatalError((org.xml.sax.SAXParseException)se);
else if(se instanceof TransformerException)
{
TransformerException te = ((TransformerException)se);
SAXSourceLocator sl = new SAXSourceLocator( te.getLocator() );
m_serializationHandler.fatalError(new org.xml.sax.SAXParseException(te.getMessage(), sl, te));
}
else
{
m_serializationHandler.fatalError(new org.xml.sax.SAXParseException(se.getMessage(), new SAXSourceLocator(), se));
}
}
catch (Exception e){}
}
if(se instanceof TransformerException)
{
m_errorHandler.fatalError((TransformerException)se);
}
else if(se instanceof org.xml.sax.SAXParseException)
{
m_errorHandler.fatalError(new TransformerException(se.getMessage(),
new SAXSourceLocator((org.xml.sax.SAXParseException)se),
se));
}
else
{
m_errorHandler.fatalError(new TransformerException(se));
}
}
finally
{
this.reset();
}
}
}
/**
* Get a SAX2 ContentHandler for the input.
*
* @return A valid ContentHandler, which should never be null, as
* long as getFeature("http://xml.org/trax/features/sax/input")
* returns true.
*/
public ContentHandler getInputContentHandler()
{
return getInputContentHandler(false);
}
/**
* Get a SAX2 ContentHandler for the input.
*
* @param doDocFrag true if a DocumentFragment should be created as
* the root, rather than a Document.
*
* @return A valid ContentHandler, which should never be null, as
* long as getFeature("http://xml.org/trax/features/sax/input")
* returns true.
*/
public ContentHandler getInputContentHandler(boolean doDocFrag)
{
if (null == m_inputContentHandler)
{
// if(null == m_urlOfSource && null != m_stylesheetRoot)
// m_urlOfSource = m_stylesheetRoot.getBaseIdentifier();
m_inputContentHandler = new TransformerHandlerImpl(this, doDocFrag,
m_urlOfSource);
}
return m_inputContentHandler;
}
/**
* Set the output properties for the transformation. These
* properties will override properties set in the templates
* with xsl:output.
*
* @param oformat A valid OutputProperties object (which will
* not be mutated), or null.
*/
public void setOutputFormat(OutputProperties oformat)
{
m_outputFormat = oformat;
}
/**
* Get the output properties used for the transformation.
*
* @return the output format that was set by the user,
* otherwise the output format from the stylesheet.
*/
public OutputProperties getOutputFormat()
{
// Get the output format that was set by the user, otherwise get the
// output format from the stylesheet.
OutputProperties format = (null == m_outputFormat)
? getStylesheet().getOutputComposed()
: m_outputFormat;
return format;
}
/**
* Set a parameter for the templates.
*
* @param name The name of the parameter.
* @param namespace The namespace of the parameter.
* @param value The value object. This can be any valid Java object
* -- it's up to the processor to provide the proper
* coersion to the object, or simply pass it on for use
* in extensions.
*/
public void setParameter(String name, String namespace, Object value)
{
VariableStack varstack = getXPathContext().getVarStack();
QName qname = new QName(namespace, name);
XObject xobject = XObject.create(value, getXPathContext());
StylesheetRoot sroot = m_stylesheetRoot;
Vector vars = sroot.getVariablesAndParamsComposed();
int i = vars.size();
while (--i >= 0)
{
ElemVariable variable = (ElemVariable)vars.elementAt(i);
if(variable.getXSLToken() == Constants.ELEMNAME_PARAMVARIABLE &&
variable.getName().equals(qname))
{
varstack.setGlobalVariable(i, xobject);
}
}
}
/** NEEDSDOC Field m_userParams */
Vector m_userParams;
/**
* Set a parameter for the transformation.
*
* @param name The name of the parameter,
* which may have a namespace URI.
* @param value The value object. This can be any valid Java object
* -- it's up to the processor to provide the proper
* coersion to the object, or simply pass it on for use
* in extensions.
*/
public void setParameter(String name, Object value)
{
if (value == null) {
throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_INVALID_SET_PARAM_VALUE, new Object[]{name}));
}
StringTokenizer tokenizer = new StringTokenizer(name, "{}", false);
try
{
// The first string might be the namespace, or it might be
// the local name, if the namespace is null.
String s1 = tokenizer.nextToken();
String s2 = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null;
if (null == m_userParams)
m_userParams = new Vector();
if (null == s2)
{
replaceOrPushUserParam(new QName(s1), XObject.create(value, getXPathContext()));
setParameter(s1, null, value);
}
else
{
replaceOrPushUserParam(new QName(s1, s2), XObject.create(value, getXPathContext()));
setParameter(s2, s1, value);
}
}
catch (java.util.NoSuchElementException nsee)
{
// Should throw some sort of an error.
}
}
/**
* NEEDSDOC Method replaceOrPushUserParam
*
*
* NEEDSDOC @param qname
* NEEDSDOC @param xval
*/
private void replaceOrPushUserParam(QName qname, XObject xval)
{
int n = m_userParams.size();
for (int i = n - 1; i >= 0; i--)
{
Arg arg = (Arg) m_userParams.elementAt(i);
if (arg.getQName().equals(qname))
{
m_userParams.setElementAt(new Arg(qname, xval, true), i);
return;
}
}
m_userParams.addElement(new Arg(qname, xval, true));
}
/**
* Get a parameter that was explicitly set with setParameter
* or setParameters.
*
*
* NEEDSDOC @param name
* @return A parameter that has been set with setParameter
* or setParameters,
* *not* all the xsl:params on the stylesheet (which require
* a transformation Source to be evaluated).
*/
public Object getParameter(String name)
{
try
{
// VariableStack varstack = getXPathContext().getVarStack();
// The first string might be the namespace, or it might be
// the local name, if the namespace is null.
QName qname = QName.getQNameFromString(name);
if (null == m_userParams)
return null;
int n = m_userParams.size();
for (int i = n - 1; i >= 0; i--)
{
Arg arg = (Arg) m_userParams.elementAt(i);
if (arg.getQName().equals(qname))
{
return arg.getVal().object();
}
}
return null;
}
catch (java.util.NoSuchElementException nsee)
{
// Should throw some sort of an error.
return null;
}
}
/**
* Reset parameters that the user specified for the transformation.
* Called during transformer.reset() after we have cleared the
* variable stack. We need to make sure that user params are
* reset so that the transformer object can be reused.
*/
private void resetUserParameters()
{
try
{
if (null == m_userParams)
return;
int n = m_userParams.size();
for (int i = n - 1; i >= 0; i--)
{
Arg arg = (Arg) m_userParams.elementAt(i);
QName name = arg.getQName();
// The first string might be the namespace, or it might be
// the local name, if the namespace is null.
String s1 = name.getNamespace();
String s2 = name.getLocalPart();
setParameter(s2, s1, arg.getVal().object());
}
}
catch (java.util.NoSuchElementException nsee)
{
// Should throw some sort of an error.
}
}
/**
* Set a bag of parameters for the transformation. Note that
* these will not be additive, they will replace the existing
* set of parameters.
*
* NEEDSDOC @param params
*/
public void setParameters(Properties params)
{
clearParameters();
Enumeration names = params.propertyNames();
while (names.hasMoreElements())
{
String name = params.getProperty((String) names.nextElement());
StringTokenizer tokenizer = new StringTokenizer(name, "{}", false);
try
{
// The first string might be the namespace, or it might be
// the local name, if the namespace is null.
String s1 = tokenizer.nextToken();
String s2 = tokenizer.hasMoreTokens() ? tokenizer.nextToken() : null;
if (null == s2)
setParameter(s1, null, params.getProperty(name));
else
setParameter(s2, s1, params.getProperty(name));
}
catch (java.util.NoSuchElementException nsee)
{
// Should throw some sort of an error.
}
}
}
/**
* Reset the parameters to a null list.
*/
public void clearParameters()
{
synchronized (m_reentryGuard)
{
VariableStack varstack = new VariableStack();
m_xcontext.setVarStack(varstack);
m_userParams = null;
}
}
/**
* Internal -- push the global variables from the Stylesheet onto
* the context's runtime variable stack.
* <p>If we encounter a variable
* that is already defined in the variable stack, we ignore it. This
* is because the second variable definition will be at a lower import
* precedence. Presumably, global"variables at the same import precedence
* with the same name will have been caught during the recompose process.
* <p>However, if we encounter a parameter that is already defined in the
* variable stack, we need to see if this is a parameter whose value was
* supplied by a setParameter call. If so, we need to "receive" the one
* already in the stack, ignoring this one. If it is just an earlier
* xsl:param or xsl:variable definition, we ignore it using the same
* reasoning as explained above for the variable.
*
* @param contextNode The root of the source tree, can't be null.
*
* @throws TransformerException
*/
protected void pushGlobalVars(int contextNode) throws TransformerException
{
XPathContext xctxt = m_xcontext;
VariableStack vs = xctxt.getVarStack();
StylesheetRoot sr = getStylesheet();
Vector vars = sr.getVariablesAndParamsComposed();
int i = vars.size();
vs.link(i);
while (--i >= 0)
{
ElemVariable v = (ElemVariable) vars.elementAt(i);
// XObject xobj = v.getValue(this, contextNode);
XObject xobj = new XUnresolvedVariable(v, contextNode, this,
vs.getStackFrame(), 0, true);
if(null == vs.elementAt(i))
vs.setGlobalVariable(i, xobj);
}
}
/**
* Set an object that will be used to resolve URIs used in
* document(), etc.
* @param resolver An object that implements the URIResolver interface,
* or null.
*/
public void setURIResolver(URIResolver resolver)
{
synchronized (m_reentryGuard)
{
m_xcontext.getSourceTreeManager().setURIResolver(resolver);
}
}
/**
* Get an object that will be used to resolve URIs used in
* document(), etc.
*
* @return An object that implements the URIResolver interface,
* or null.
*/
public URIResolver getURIResolver()
{
return m_xcontext.getSourceTreeManager().getURIResolver();
}
// ======== End Transformer Implementation ========
/**
* Set the content event handler.
*
* NEEDSDOC @param handler
* @throws java.lang.NullPointerException If the handler
* is null.
* @see org.xml.sax.XMLReader#setContentHandler
*/
public void setContentHandler(ContentHandler handler)
{
if (handler == null)
{
throw new NullPointerException(XSLMessages.createMessage(XSLTErrorResources.ER_NULL_CONTENT_HANDLER, null)); //"Null content handler");
}
else
{
m_outputContentHandler = handler;
if (null == m_serializationHandler)
{
ToXMLSAXHandler h = new ToXMLSAXHandler();
h.setContentHandler(handler);
h.setTransformer(this);
m_serializationHandler = h;
}
else
m_serializationHandler.setContentHandler(handler);
}
}
/**
* Get the content event handler.
*
* @return The current content handler, or null if none was set.
* @see org.xml.sax.XMLReader#getContentHandler
*/
public ContentHandler getContentHandler()
{
return m_outputContentHandler;
}
/**
* Given a stylesheet element, create a result tree fragment from it's
* contents. The fragment will be built within the shared RTF DTM system
* used as a variable stack.
* @param templateParent The template element that holds the fragment.
* @return the NodeHandle for the root node of the resulting RTF.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public int transformToRTF(ElemTemplateElement templateParent)
throws TransformerException
{
// Retrieve a DTM to contain the RTF. At this writing, this may be a
// multi-document DTM (SAX2RTFDTM).
DTM dtmFrag = m_xcontext.getRTFDTM();
return transformToRTF(templateParent,dtmFrag);
}
/**
* Given a stylesheet element, create a result tree fragment from it's
* contents. The fragment will also use the shared DTM system, but will
* obtain its space from the global variable pool rather than the dynamic
* variable stack. This allows late binding of XUnresolvedVariables without
* the risk that their content will be discarded when the variable stack
* is popped.
*
* @param templateParent The template element that holds the fragment.
* @return the NodeHandle for the root node of the resulting RTF.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public int transformToGlobalRTF(ElemTemplateElement templateParent)
throws TransformerException
{
// Retrieve a DTM to contain the RTF. At this writing, this may be a
// multi-document DTM (SAX2RTFDTM).
DTM dtmFrag = m_xcontext.getGlobalRTFDTM();
return transformToRTF(templateParent,dtmFrag);
}
/**
* Given a stylesheet element, create a result tree fragment from it's
* contents.
* @param templateParent The template element that holds the fragment.
* @param dtmFrag The DTM to write the RTF into
* @return the NodeHandle for the root node of the resulting RTF.
*
* @throws TransformerException
* @xsl.usage advanced
*/
private int transformToRTF(ElemTemplateElement templateParent,DTM dtmFrag)
throws TransformerException
{
XPathContext xctxt = m_xcontext;
ContentHandler rtfHandler = dtmFrag.getContentHandler();
// Obtain the ResultTreeFrag's root node.
// NOTE: In SAX2RTFDTM, this value isn't available until after
// the startDocument has been issued, so assignment has been moved
// down a bit in the code.
int resultFragment; // not yet reliably = dtmFrag.getDocument();
// Save the current result tree handler.
SerializationHandler savedRTreeHandler = this.m_serializationHandler;
// And make a new handler for the RTF.
ToSAXHandler h = new ToXMLSAXHandler();
h.setContentHandler(rtfHandler);
h.setTransformer(this);
// Replace the old handler (which was already saved)
m_serializationHandler = h;
// use local variable for the current handler
SerializationHandler rth = m_serializationHandler;
try
{
rth.startDocument();
// startDocument is "bottlenecked" in RTH. We need it acted upon immediately,
// to set the DTM's state as in-progress, so that if the xsl:variable's body causes
// further RTF activity we can keep that from bashing this DTM.
rth.flushPending();
try
{
// Do the transformation of the child elements.
executeChildTemplates(templateParent, true);
// Make sure everything is flushed!
rth.flushPending();
// Get the document ID. May not exist until the RTH has not only
// received, but flushed, the startDocument, and may be invalid
// again after the document has been closed (still debating that)
// ... so waiting until just before the end seems simplest/safest.
resultFragment = dtmFrag.getDocument();
}
finally
{
rth.endDocument();
}
}
catch (org.xml.sax.SAXException se)
{
throw new TransformerException(se);
}
finally
{
// Restore the previous result tree handler.
this.m_serializationHandler = savedRTreeHandler;
}
return resultFragment;
}
/**
* Take the contents of a template element, process it, and
* convert it to a string.
*
* @param elem The parent element whose children will be output
* as a string.
*
* @return The stringized result of executing the elements children.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public String transformToString(ElemTemplateElement elem)
throws TransformerException
{
ElemTemplateElement firstChild = elem.getFirstChildElem();
if(null == firstChild)
return "";
if(elem.hasTextLitOnly() && m_optimizer)
{
return ((ElemTextLiteral)firstChild).getNodeValue();
}
// Save the current result tree handler.
SerializationHandler savedRTreeHandler = this.m_serializationHandler;
// Create a Serializer object that will handle the SAX events
// and build the ResultTreeFrag nodes.
StringWriter sw = (StringWriter) m_stringWriterObjectPool.getInstance();
m_serializationHandler =
(ToTextStream) m_textResultHandlerObjectPool.getInstance();
if (null == m_serializationHandler)
{
// if we didn't get one from the pool, go make a new one
Serializer serializer = org.apache.xml.serializer.SerializerFactory.getSerializer(
m_textformat.getProperties());
m_serializationHandler = (SerializationHandler) serializer;
}
m_serializationHandler.setTransformer(this);
m_serializationHandler.setWriter(sw);
String result;
try
{
/* Don't call startDocument, the SerializationHandler will
* generate its own internal startDocument call anyways
*/
// this.m_serializationHandler.startDocument();
// Do the transformation of the child elements.
executeChildTemplates(elem, true);
this.m_serializationHandler.endDocument();
result = sw.toString();
}
catch (org.xml.sax.SAXException se)
{
throw new TransformerException(se);
}
finally
{
sw.getBuffer().setLength(0);
try
{
sw.close();
}
catch (Exception ioe){}
m_stringWriterObjectPool.freeInstance(sw);
m_serializationHandler.reset();
m_textResultHandlerObjectPool.freeInstance(m_serializationHandler);
// Restore the previous result tree handler.
m_serializationHandler = savedRTreeHandler;
}
return result;
}
/**
* Given an element and mode, find the corresponding
* template and process the contents.
*
* @param xslInstruction The calling element.
* @param template The template to use if xsl:for-each, current template for apply-imports, or null.
* @param child The source context node.
* @throws TransformerException
* @return true if applied a template, false if not.
* @xsl.usage advanced
*/
public boolean applyTemplateToNode(ElemTemplateElement xslInstruction, // xsl:apply-templates or xsl:for-each
ElemTemplate template, int child)
throws TransformerException
{
DTM dtm = m_xcontext.getDTM(child);
short nodeType = dtm.getNodeType(child);
boolean isDefaultTextRule = false;
boolean isApplyImports = false;
isApplyImports = ((xslInstruction == null)
? false
: xslInstruction.getXSLToken()
== Constants.ELEMNAME_APPLY_IMPORTS);
if (null == template || isApplyImports)
{
int maxImportLevel, endImportLevel=0;
if (isApplyImports)
{
maxImportLevel =
template.getStylesheetComposed().getImportCountComposed() - 1;
endImportLevel =
template.getStylesheetComposed().getEndImportCountComposed();
}
else
{
maxImportLevel = -1;
}
// If we're trying an xsl:apply-imports at the top level (ie there are no
// imported stylesheets), we need to indicate that there is no matching template.
// The above logic will calculate a maxImportLevel of -1 which indicates
// that we should find any template. This is because a value of -1 for
// maxImportLevel has a special meaning. But we don't want that.
// We want to match -no- templates. See bugzilla bug 1170.
if (isApplyImports && (maxImportLevel == -1))
{
template = null;
}
else
{
// Find the XSL template that is the best match for the
// element.
XPathContext xctxt = m_xcontext;
try
{
xctxt.pushNamespaceContext(xslInstruction);
QName mode = this.getMode();
if (isApplyImports)
template = m_stylesheetRoot.getTemplateComposed(xctxt, child, mode,
maxImportLevel, endImportLevel, m_quietConflictWarnings, dtm);
else
template = m_stylesheetRoot.getTemplateComposed(xctxt, child, mode,
m_quietConflictWarnings, dtm);
}
finally
{
xctxt.popNamespaceContext();
}
}
// If that didn't locate a node, fall back to a default template rule.
// See http://www.w3.org/TR/xslt#built-in-rule.
if (null == template)
{
switch (nodeType)
{
case DTM.DOCUMENT_FRAGMENT_NODE :
case DTM.ELEMENT_NODE :
template = m_stylesheetRoot.getDefaultRule();
break;
case DTM.CDATA_SECTION_NODE :
case DTM.TEXT_NODE :
case DTM.ATTRIBUTE_NODE :
template = m_stylesheetRoot.getDefaultTextRule();
isDefaultTextRule = true;
break;
case DTM.DOCUMENT_NODE :
template = m_stylesheetRoot.getDefaultRootRule();
break;
default :
// No default rules for processing instructions and the like.
return false;
}
}
}
// If we are processing the default text rule, then just clone
// the value directly to the result tree.
try
{
pushElemTemplateElement(template);
m_xcontext.pushCurrentNode(child);
pushPairCurrentMatched(template, child);
// Fix copy copy29 test.
if (!isApplyImports) {
DTMIterator cnl = new org.apache.xpath.NodeSetDTM(child, m_xcontext.getDTMManager());
m_xcontext.pushContextNodeList(cnl);
}
if (isDefaultTextRule)
{
switch (nodeType)
{
case DTM.CDATA_SECTION_NODE :
case DTM.TEXT_NODE :
ClonerToResultTree.cloneToResultTree(child, nodeType,
dtm, getResultTreeHandler(), false);
break;
case DTM.ATTRIBUTE_NODE :
dtm.dispatchCharactersEvents(child, getResultTreeHandler(), false);
break;
}
}
else
{
// And execute the child templates.
// 9/11/00: If template has been compiled, hand off to it
// since much (most? all?) of the processing has been inlined.
// (It would be nice if there was a single entry point that
// worked for both... but the interpretive system works by
// having the Tranformer execute the children, while the
// compiled obviously has to run its own code. It's
// also unclear that "execute" is really the right name for
// that entry point.)
m_xcontext.setSAXLocator(template);
// m_xcontext.getVarStack().link();
m_xcontext.getVarStack().link(template.m_frameSize);
executeChildTemplates(template, true);
}
}
catch (org.xml.sax.SAXException se)
{
throw new TransformerException(se);
}
finally
{
if (!isDefaultTextRule)
m_xcontext.getVarStack().unlink();
m_xcontext.popCurrentNode();
if (!isApplyImports) {
m_xcontext.popContextNodeList();
}
popCurrentMatched();
popElemTemplateElement();
}
return true;
}
/**
* Execute each of the children of a template element. This method
* is only for extension use.
*
* @param elem The ElemTemplateElement that contains the children
* that should execute.
* NEEDSDOC @param context
* @param mode The current mode.
* @param handler The ContentHandler to where the result events
* should be fed.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public void executeChildTemplates(
ElemTemplateElement elem, org.w3c.dom.Node context, QName mode, ContentHandler handler)
throws TransformerException
{
XPathContext xctxt = m_xcontext;
try
{
if(null != mode)
pushMode(mode);
xctxt.pushCurrentNode(xctxt.getDTMHandleFromNode(context));
executeChildTemplates(elem, handler);
}
finally
{
xctxt.popCurrentNode();
// I'm not sure where or why this was here. It is clearly in
// error though, without a corresponding pushMode().
if (null != mode)
popMode();
}
}
/**
* Execute each of the children of a template element.
*
* @param elem The ElemTemplateElement that contains the children
* that should execute.
* @param shouldAddAttrs true if xsl:attributes should be executed.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public void executeChildTemplates(
ElemTemplateElement elem, boolean shouldAddAttrs)
throws TransformerException
{
// Does this element have any children?
ElemTemplateElement t = elem.getFirstChildElem();
if (null == t)
return;
if(elem.hasTextLitOnly() && m_optimizer)
{
char[] chars = ((ElemTextLiteral)t).getChars();
try
{
// Have to push stuff on for tooling...
this.pushElemTemplateElement(t);
m_serializationHandler.characters(chars, 0, chars.length);
}
catch(SAXException se)
{
throw new TransformerException(se);
}
finally
{
this.popElemTemplateElement();
}
return;
}
// // Check for infinite loops if we have to.
// boolean check = (m_stackGuard.m_recursionLimit > -1);
//
// if (check)
// getStackGuard().push(elem, xctxt.getCurrentNode());
XPathContext xctxt = m_xcontext;
xctxt.pushSAXLocatorNull();
int currentTemplateElementsTop = m_currentTemplateElements.size();
m_currentTemplateElements.push(null);
try
{
// Loop through the children of the template, calling execute on
// each of them.
for (; t != null; t = t.getNextSiblingElem())
{
if (!shouldAddAttrs
&& t.getXSLToken() == Constants.ELEMNAME_ATTRIBUTE)
continue;
xctxt.setSAXLocator(t);
m_currentTemplateElements.setElementAt(t,currentTemplateElementsTop);
t.execute(this);
}
}
catch(RuntimeException re)
{
TransformerException te = new TransformerException(re);
te.setLocator(t);
throw te;
}
finally
{
m_currentTemplateElements.pop();
xctxt.popSAXLocator();
}
// Check for infinite loops if we have to
// if (check)
// getStackGuard().pop();
}
/**
* Execute each of the children of a template element.
*
* @param elem The ElemTemplateElement that contains the children
* that should execute.
* @param handler The ContentHandler to where the result events
* should be fed.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public void executeChildTemplates(
ElemTemplateElement elem, ContentHandler handler)
throws TransformerException
{
SerializationHandler xoh = this.getSerializationHandler();
// These may well not be the same! In this case when calling
// the Redirect extension, it has already set the ContentHandler
// in the Transformer.
SerializationHandler savedHandler = xoh;
try
{
xoh.flushPending();
// %REVIEW% Make sure current node is being pushed.
LexicalHandler lex = null;
if (handler instanceof LexicalHandler) {
lex = (LexicalHandler) handler;
}
m_serializationHandler = new ToXMLSAXHandler(handler, lex, savedHandler.getEncoding());
m_serializationHandler.setTransformer(this);
executeChildTemplates(elem, true);
}
catch (TransformerException e)
{
throw e;
}
catch (SAXException se) {
throw new TransformerException(se);
}
finally
{
m_serializationHandler = savedHandler;
}
}
/**
* Get the keys for the xsl:sort elements.
* Note: Should this go into ElemForEach?
*
* @param foreach Valid ElemForEach element, not null.
* @param sourceNodeContext The current node context in the source tree,
* needed to evaluate the Attribute Value Templates.
*
* @return A Vector of NodeSortKeys, or null.
*
* @throws TransformerException
* @xsl.usage advanced
*/
public Vector processSortKeys(ElemForEach foreach, int sourceNodeContext)
throws TransformerException
{
Vector keys = null;
XPathContext xctxt = m_xcontext;
int nElems = foreach.getSortElemCount();
if (nElems > 0)
keys = new Vector();
// March backwards, collecting the sort keys.
for (int i = 0; i < nElems; i++)
{
ElemSort sort = foreach.getSortElem(i);
String langString =
(null != sort.getLang())
? sort.getLang().evaluate(xctxt, sourceNodeContext, foreach) : null;
String dataTypeString = sort.getDataType().evaluate(xctxt,
sourceNodeContext, foreach);
if (dataTypeString.indexOf(":") >= 0)
System.out.println(
"TODO: Need to write the hooks for QNAME sort data type");
else if (!(dataTypeString.equalsIgnoreCase(Constants.ATTRVAL_DATATYPE_TEXT))
&&!(dataTypeString.equalsIgnoreCase(
Constants.ATTRVAL_DATATYPE_NUMBER)))
foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE,
new Object[]{ Constants.ATTRNAME_DATATYPE,
dataTypeString });
boolean treatAsNumbers =
((null != dataTypeString) && dataTypeString.equals(
Constants.ATTRVAL_DATATYPE_NUMBER)) ? true : false;
String orderString = sort.getOrder().evaluate(xctxt, sourceNodeContext,
foreach);
if (!(orderString.equalsIgnoreCase(Constants.ATTRVAL_ORDER_ASCENDING))
&&!(orderString.equalsIgnoreCase(
Constants.ATTRVAL_ORDER_DESCENDING)))
foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE,
new Object[]{ Constants.ATTRNAME_ORDER,
orderString });
boolean descending =
((null != orderString) && orderString.equals(
Constants.ATTRVAL_ORDER_DESCENDING)) ? true : false;
AVT caseOrder = sort.getCaseOrder();
boolean caseOrderUpper;
if (null != caseOrder)
{
String caseOrderString = caseOrder.evaluate(xctxt, sourceNodeContext,
foreach);
if (!(caseOrderString.equalsIgnoreCase(Constants.ATTRVAL_CASEORDER_UPPER))
&&!(caseOrderString.equalsIgnoreCase(
Constants.ATTRVAL_CASEORDER_LOWER)))
foreach.error(XSLTErrorResources.ER_ILLEGAL_ATTRIBUTE_VALUE,
new Object[]{ Constants.ATTRNAME_CASEORDER,
caseOrderString });
caseOrderUpper =
((null != caseOrderString) && caseOrderString.equals(
Constants.ATTRVAL_CASEORDER_UPPER)) ? true : false;
}
else
{
caseOrderUpper = false;
}
keys.addElement(new NodeSortKey(this, sort.getSelect(), treatAsNumbers,
descending, langString, caseOrderUpper,
foreach));
}
return keys;
}
//==========================================================
// SECTION: TransformState implementation
//==========================================================
/**
* Get the count of how many elements are
* active.
* @return The number of active elements on
* the currentTemplateElements stack.
*/
public int getCurrentTemplateElementsCount()
{
return m_currentTemplateElements.size();
}
/**
* Get the count of how many elements are
* active.
* @return The number of active elements on
* the currentTemplateElements stack.
*/
public ObjectStack getCurrentTemplateElements()
{
return m_currentTemplateElements;
}
/**
* Push the current template element.
*
* @param elem The current ElemTemplateElement (may be null, and then
* set via setCurrentElement).
*/
public void pushElemTemplateElement(ElemTemplateElement elem)
{
m_currentTemplateElements.push(elem);
}
/**
* Pop the current template element.
*/
public void popElemTemplateElement()
{
m_currentTemplateElements.pop();
}
/**
* Set the top of the current template elements
* stack.
*
* @param e The current ElemTemplateElement about to
* be executed.
*/
public void setCurrentElement(ElemTemplateElement e)
{
m_currentTemplateElements.setTop(e);
}
/**
* Retrieves the current ElemTemplateElement that is
* being executed.
*
* @return The current ElemTemplateElement that is executing,
* should not normally be null.
*/
public ElemTemplateElement getCurrentElement()
{
return (m_currentTemplateElements.size() > 0) ?
(ElemTemplateElement) m_currentTemplateElements.peek() : null;
}
/**
* This method retrieves the current context node
* in the source tree.
*
* @return The current context node (should never be null?).
*/
public int getCurrentNode()
{
return m_xcontext.getCurrentNode();
}
/**
* This method retrieves the xsl:template
* that is in effect, which may be a matched template
* or a named template.
*
* <p>Please note that the ElemTemplate returned may
* be a default template, and thus may not have a template
* defined in the stylesheet.</p>
*
* @return The current xsl:template, should not be null.
*/
public ElemTemplate getCurrentTemplate()
{
ElemTemplateElement elem = getCurrentElement();
while ((null != elem)
&& (elem.getXSLToken() != Constants.ELEMNAME_TEMPLATE))
{
elem = elem.getParentElem();
}
return (ElemTemplate) elem;
}
/**
* Push both the current xsl:template or xsl:for-each onto the
* stack, along with the child node that was matched.
* (Note: should this only be used for xsl:templates?? -sb)
*
* @param template xsl:template or xsl:for-each.
* @param child The child that was matched.
*/
public void pushPairCurrentMatched(ElemTemplateElement template, int child)
{
m_currentMatchTemplates.push(template);
m_currentMatchedNodes.push(child);
}
/**
* Pop the elements that were pushed via pushPairCurrentMatched.
*/
public void popCurrentMatched()
{
m_currentMatchTemplates.pop();
m_currentMatchedNodes.pop();
}
/**
* This method retrieves the xsl:template
* that was matched. Note that this may not be
* the same thing as the current template (which
* may be from getCurrentElement()), since a named
* template may be in effect.
*
* @return The pushed template that was pushed via pushPairCurrentMatched.
*/
public ElemTemplate getMatchedTemplate()
{
return (ElemTemplate) m_currentMatchTemplates.peek();
}
/**
* Retrieves the node in the source tree that matched
* the template obtained via getMatchedTemplate().
*
* @return The matched node that corresponds to the
* match attribute of the current xsl:template.
*/
public int getMatchedNode()
{
return m_currentMatchedNodes.peepTail();
}
/**
* Get the current context node list.
*
* @return A reset clone of the context node list.
*/
public DTMIterator getContextNodeList()
{
try
{
DTMIterator cnl = m_xcontext.getContextNodeList();
return (cnl == null) ? null : (DTMIterator) cnl.cloneWithReset();
}
catch (CloneNotSupportedException cnse)
{
// should never happen.
return null;
}
}
/**
* Get the TrAX Transformer object in effect.
*
* @return This object.
*/
public Transformer getTransformer()
{
return this;
}
//==========================================================
// SECTION: Accessor Functions
//==========================================================
/**
* Set the stylesheet for this processor. If this is set, then the
* process calls that take only the input .xml will use
* this instead of looking for a stylesheet PI. Also,
* setting the stylesheet is needed if you are going
* to use the processor as a SAX ContentHandler.
*
* @param stylesheetRoot A non-null StylesheetRoot object,
* or null if you wish to clear the stylesheet reference.
*/
public void setStylesheet(StylesheetRoot stylesheetRoot)
{
m_stylesheetRoot = stylesheetRoot;
}
/**
* Get the current stylesheet for this processor.
*
* @return The stylesheet that is associated with this
* transformer.
*/
public final StylesheetRoot getStylesheet()
{
return m_stylesheetRoot;
}
/**
* Get quietConflictWarnings property. If the quietConflictWarnings
* property is set to true, warnings about pattern conflicts won't be
* printed to the diagnostics stream.
*
* @return True if this transformer should not report
* template match conflicts.
*/
public boolean getQuietConflictWarnings()
{
return m_quietConflictWarnings;
}
/**
* Set the execution context for XPath.
*
* @param xcontext A non-null reference to the XPathContext
* associated with this transformer.
* @xsl.usage internal
*/
public void setXPathContext(XPathContext xcontext)
{
m_xcontext = xcontext;
}
/**
* Get the XPath context associated with this transformer.
*
* @return The XPathContext reference, never null.
*/
public final XPathContext getXPathContext()
{
return m_xcontext;
}
/**
* Get the SerializationHandler object.
*
* @return The current SerializationHandler, which may not
* be the main result tree manager.
*/
public SerializationHandler getResultTreeHandler()
{
return m_serializationHandler;
}
/**
* Get the SerializationHandler object.
*
* @return The current SerializationHandler, which may not
* be the main result tree manager.
*/
public SerializationHandler getSerializationHandler()
{
return m_serializationHandler;
}
/**
* Get the KeyManager object.
*
* @return A reference to the KeyManager object, which should
* never be null.
*/
public KeyManager getKeyManager()
{
return m_keyManager;
}
/**
* Check to see if this is a recursive attribute definition.
*
* @param attrSet A non-null ElemAttributeSet reference.
*
* @return true if the attribute set is recursive.
*/
public boolean isRecursiveAttrSet(ElemAttributeSet attrSet)
{
if (null == m_attrSetStack)
{
m_attrSetStack = new Stack();
}
if (!m_attrSetStack.empty())
{
int loc = m_attrSetStack.search(attrSet);
if (loc > -1)
{
return true;
}
}
return false;
}
/**
* Push an executing attribute set, so we can check for
* recursive attribute definitions.
*
* @param attrSet A non-null ElemAttributeSet reference.
*/
public void pushElemAttributeSet(ElemAttributeSet attrSet)
{
m_attrSetStack.push(attrSet);
}
/**
* Pop the current executing attribute set.
*/
public void popElemAttributeSet()
{
m_attrSetStack.pop();
}
/**
* Get the table of counters, for optimized xsl:number support.
*
* @return The CountersTable, never null.
*/
public CountersTable getCountersTable()
{
if (null == m_countersTable)
m_countersTable = new CountersTable();
return m_countersTable;
}
/**
* Tell if the current template rule is null, i.e. if we are
* directly within an apply-templates. Used for xsl:apply-imports.
*
* @return True if the current template rule is null.
*/
public boolean currentTemplateRuleIsNull()
{
return ((!m_currentTemplateRuleIsNull.isEmpty())
&& (m_currentTemplateRuleIsNull.peek() == true));
}
/**
* Push true if the current template rule is null, false
* otherwise.
*
* @param b True if the we are executing an xsl:for-each
* (or xsl:call-template?).
*/
public void pushCurrentTemplateRuleIsNull(boolean b)
{
m_currentTemplateRuleIsNull.push(b);
}
/**
* Push true if the current template rule is null, false
* otherwise.
*/
public void popCurrentTemplateRuleIsNull()
{
m_currentTemplateRuleIsNull.pop();
}
/**
* Push a funcion result for the currently active EXSLT
* <code>func:function</code>.
*
* @param val the result of executing an EXSLT
* <code>func:result</code> instruction for the current
* <code>func:function</code>.
*/
public void pushCurrentFuncResult(Object val) {
m_currentFuncResult.push(val);
}
/**
* Pops the result of the currently active EXSLT <code>func:function</code>.
*
* @return the value of the <code>func:function</code>
*/
public Object popCurrentFuncResult() {
return m_currentFuncResult.pop();
}
/**
* Determines whether an EXSLT <code>func:result</code> instruction has been
* executed for the currently active EXSLT <code>func:function</code>.
*
* @return <code>true</code> if and only if a <code>func:result</code>
* instruction has been executed
*/
public boolean currentFuncResultSeen() {
return !m_currentFuncResult.empty()
&& m_currentFuncResult.peek() != null;
}
/**
* Return the message manager.
*
* @return The message manager, never null.
*/
public MsgMgr getMsgMgr()
{
if (null == m_msgMgr)
m_msgMgr = new MsgMgr(this);
return m_msgMgr;
}
/**
* Set the error event listener.
*
* @param listener The new error listener.
* @throws IllegalArgumentException if
*/
public void setErrorListener(ErrorListener listener)
throws IllegalArgumentException
{
synchronized (m_reentryGuard)
{
if (listener == null)
throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_NULL_ERROR_HANDLER, null)); //"Null error handler");
m_errorHandler = listener;
}
}
/**
* Get the current error event handler.
*
* @return The current error handler, which should never be null.
*/
public ErrorListener getErrorListener()
{
return m_errorHandler;
}
/**
* Look up the value of a feature.
*
* <p>The feature name is any fully-qualified URI. It is
* possible for an TransformerFactory to recognize a feature name but
* to be unable to return its value; this is especially true
* in the case of an adapter for a SAX1 Parser, which has
* no way of knowing whether the underlying parser is
* validating, for example.</p>
*
* <h3>Open issues:</h3>
* <dl>
* <dt><h4>Should getFeature be changed to hasFeature?</h4></dt>
* <dd>Keith Visco writes: Should getFeature be changed to hasFeature?
* It returns a boolean which indicated whether the "state"
* of feature is "true or false". I assume this means whether
* or not a feature is supported? I know SAX is using "getFeature",
* but to me "hasFeature" is cleaner.</dd>
* </dl>
*
* @param name The feature name, which is a fully-qualified
* URI.
* @return The current state of the feature (true or false).
* @throws org.xml.sax.SAXNotRecognizedException When the
* TransformerFactory does not recognize the feature name.
* @throws org.xml.sax.SAXNotSupportedException When the
* TransformerFactory recognizes the feature name but
* cannot determine its value at this time.
*
* @throws SAXNotRecognizedException
* @throws SAXNotSupportedException
*/
public boolean getFeature(String name)
throws SAXNotRecognizedException, SAXNotSupportedException
{
if ("http://xml.org/trax/features/sax/input".equals(name))
return true;
else if ("http://xml.org/trax/features/dom/input".equals(name))
return true;
throw new SAXNotRecognizedException(name);
}
// %TODO% Doc
/**
* NEEDSDOC Method getMode
*
*
* NEEDSDOC (getMode) @return
*/
public QName getMode()
{
return m_modes.isEmpty() ? null : (QName) m_modes.peek();
}
// %TODO% Doc
/**
* NEEDSDOC Method pushMode
*
*
* NEEDSDOC @param mode
*/
public void pushMode(QName mode)
{
m_modes.push(mode);
}
// %TODO% Doc
/**
* NEEDSDOC Method popMode
*
*/
public void popMode()
{
m_modes.pop();
}
/**
* Called by SourceTreeHandler to start the transformation
* in a separate thread
*
* NEEDSDOC @param priority
*/
public void runTransformThread(int priority)
{
// used in SourceTreeHandler
Thread t = ThreadControllerWrapper.runThread(this, priority);
this.setTransformThread(t);
}
/**
* Called by this.transform() if isParserEventsOnMain()==false.
* Similar with runTransformThread(), but no priority is set
* and setTransformThread is not set.
*/
public void runTransformThread()
{
ThreadControllerWrapper.runThread(this, -1);
}
/**
* Called by CoRoutineSAXParser. Launches the CoroutineSAXParser
* in a thread, and prepares it to invoke the parser from that thread
* upon request.
*
*/
public static void runTransformThread(Runnable runnable)
{
ThreadControllerWrapper.runThread(runnable, -1);
}
/**
* Used by SourceTreeHandler to wait until the transform
* completes
*
* @throws SAXException
*/
public void waitTransformThread() throws SAXException
{
// This is called to make sure the task is done.
// It is possible that the thread has been reused -
// but for a different transformation. ( what if we
// recycle the transformer ? Not a problem since this is
// still in use. )
Thread transformThread = this.getTransformThread();
if (null != transformThread)
{
try
{
ThreadControllerWrapper.waitThread(transformThread, this);
if (!this.hasTransformThreadErrorCatcher())
{
Exception e = this.getExceptionThrown();
if (null != e)
{
e.printStackTrace();
throw new org.xml.sax.SAXException(e);
}
}
this.setTransformThread(null);
}
catch (InterruptedException ie){}
}
}
/**
* Get the exception thrown by the secondary thread (normally
* the transform thread).
*
* @return The thrown exception, or null if no exception was
* thrown.
*/
public Exception getExceptionThrown()
{
return m_exceptionThrown;
}
/**
* Set the exception thrown by the secondary thread (normally
* the transform thread).
*
* @param e The thrown exception, or null if no exception was
* thrown.
*/
public void setExceptionThrown(Exception e)
{
m_exceptionThrown = e;
}
/**
* This is just a way to set the document for run().
*
* @param doc A non-null reference to the root of the
* tree to be transformed.
*/
public void setSourceTreeDocForThread(int doc)
{
m_doc = doc;
}
/**
* From a secondary thread, post the exception, so that
* it can be picked up from the main thread.
*
* @param e The exception that was thrown.
*/
void postExceptionFromThread(Exception e)
{
// Commented out in response to problem reported by Nicola Brown <Nicola.Brown@jacobsrimell.com>
// if(m_reportInPostExceptionFromThread)
// {
// // Consider re-throwing the exception if this flag is set.
// e.printStackTrace();
// }
// %REVIEW Need DTM equivelent?
// if (m_inputContentHandler instanceof SourceTreeHandler)
// {
// SourceTreeHandler sth = (SourceTreeHandler) m_inputContentHandler;
//
// sth.setExceptionThrown(e);
// }
// ContentHandler ch = getContentHandler();
// if(ch instanceof SourceTreeHandler)
// {
// SourceTreeHandler sth = (SourceTreeHandler) ch;
// ((TransformerImpl)(sth.getTransformer())).postExceptionFromThread(e);
// }
// m_isTransformDone = true; // android-removed
m_exceptionThrown = e;
; // should have already been reported via the error handler?
synchronized (this)
{
// See message from me on 3/27/2001 to Patrick Moore.
// String msg = e.getMessage();
// System.out.println(e.getMessage());
// Is this really needed? -sb
notifyAll();
// if (null == msg)
// {
//
// // m_throwNewError = false;
// e.printStackTrace();
// }
// throw new org.apache.xml.utils.WrappedRuntimeException(e);
}
}
/**
* Run the transform thread.
*/
public void run()
{
m_hasBeenReset = false;
try
{
// int n = ((SourceTreeHandler)getInputContentHandler()).getDTMRoot();
// transformNode(n);
try
{
// m_isTransformDone = false; // android-removed
// Should no longer be needed...
// if(m_inputContentHandler instanceof TransformerHandlerImpl)
// {
// TransformerHandlerImpl thi = (TransformerHandlerImpl)m_inputContentHandler;
// thi.waitForInitialEvents();
// }
transformNode(m_doc);
}
catch (Exception e)
{
// e.printStackTrace();
// Strange that the other catch won't catch this...
if (null != m_transformThread)
postExceptionFromThread(e); // Assume we're on the main thread
else
throw new RuntimeException(e.getMessage());
}
finally
{
// m_isTransformDone = true; // android-removed
if (m_inputContentHandler instanceof TransformerHandlerImpl)
{
((TransformerHandlerImpl) m_inputContentHandler).clearCoRoutine();
}
// synchronized (this)
// {
// notifyAll();
// }
}
}
catch (Exception e)
{
// e.printStackTrace();
if (null != m_transformThread)
postExceptionFromThread(e);
else
throw new RuntimeException(e.getMessage()); // Assume we're on the main thread.
}
}
// Fragment re-execution interfaces for a tool.
/**
* Test whether whitespace-only text nodes are visible in the logical
* view of <code>DTM</code>. Normally, this function
* will be called by the implementation of <code>DTM</code>;
* it is not normally called directly from
* user code.
*
* @param elementHandle int Handle of the element.
* @return one of NOTSTRIP, STRIP, or INHERIT.
*/
public short getShouldStripSpace(int elementHandle, DTM dtm)
{
try
{
org.apache.xalan.templates.WhiteSpaceInfo info =
m_stylesheetRoot.getWhiteSpaceInfo(m_xcontext, elementHandle, dtm);
if (null == info)
{
return DTMWSFilter.INHERIT;
}
else
{
// System.out.println("getShouldStripSpace: "+info.getShouldStripSpace());
return info.getShouldStripSpace()
? DTMWSFilter.STRIP : DTMWSFilter.NOTSTRIP;
}
}
catch (TransformerException se)
{
return DTMWSFilter.INHERIT;
}
}
/**
* Initializer method.
*
* @param transformer non-null transformer instance
* @param realHandler Content Handler instance
*/
public void init(ToXMLSAXHandler h,Transformer transformer, ContentHandler realHandler)
{
h.setTransformer(transformer);
h.setContentHandler(realHandler);
}
public void setSerializationHandler(SerializationHandler xoh)
{
m_serializationHandler = xoh;
}
/**
* Fire off characters, cdate events.
* @see org.apache.xml.serializer.SerializerTrace#fireGenerateEvent(int, char[], int, int)
*/
public void fireGenerateEvent(
int eventType,
char[] ch,
int start,
int length) {
}
/**
* Fire off startElement, endElement events.
* @see org.apache.xml.serializer.SerializerTrace#fireGenerateEvent(int, String, Attributes)
*/
public void fireGenerateEvent(
int eventType,
String name,
Attributes atts) {
}
/**
* Fire off processingInstruction events.
*/
public void fireGenerateEvent(int eventType, String name, String data) {
}
/**
* Fire off comment and entity ref events.
* @see org.apache.xml.serializer.SerializerTrace#fireGenerateEvent(int, String)
*/
public void fireGenerateEvent(int eventType, String data) {
}
/**
* Fire off startDocument, endDocument events.
* @see org.apache.xml.serializer.SerializerTrace#fireGenerateEvent(int)
*/
public void fireGenerateEvent(int eventType) {
}
/**
* @see org.apache.xml.serializer.SerializerTrace#hasTraceListeners()
*/
public boolean hasTraceListeners() {
return false;
}
/**
* @return Incremental flag
*/
public boolean getIncremental() {
return m_incremental;
}
/**
* @return Optimization flag
*/
public boolean getOptimize() {
return m_optimizer;
}
/**
* @return Source location flag
*/
public boolean getSource_location() {
return m_source_location;
}
} // end TransformerImpl class