org.apache.xalan.transformer
Class TransformerImpl

java.lang.Object
  |
  +--javax.xml.transform.Transformer
        |
        +--org.apache.xalan.transformer.TransformerImpl

public class TransformerImpl

extends Transformer

implements java.lang.Runnable, DTMWSFilter, ExtensionsProvider

**For advanced use only** This class implements the Transformer interface, and is the core representation of the transformation execution.

Inner Class Summary

static class

TransformerImpl.ThreadControler Base thread controler for xalan.

Field Summary

static boolean

S_DEBUG This is a compile-time flag to turn off calling of trace listeners.

Constructor Summary

TransformerImpl(StylesheetRoot stylesheet)
Construct a TransformerImpl.

Method Summary

boolean	applyTemplateToNode(ElemTemplateElement xslInstruction, ElemTemplate template, int child) **For advanced use only** Given an element and mode, find the corresponding template and process the contents.
void	clearParameters() Reset the parameters to a null list.
ContentHandler	createResultContentHandler(Result outputTarget) Create a result ContentHandler from a Result object, based on the current OutputProperties.
ContentHandler	createResultContentHandler(Result outputTarget, OutputProperties format) Create a ContentHandler from a Result object and an OutputProperties.
boolean	currentTemplateRuleIsNull() Tell if the current template rule is null, i.e.
boolean	elementAvailable(java.lang.String ns, java.lang.String elemName)
void	executeChildTemplates(ElemTemplateElement elem, boolean shouldAddAttrs) **For advanced use only** Execute each of the children of a template element.
void	executeChildTemplates(ElemTemplateElement elem, ContentHandler handler) **For advanced use only** Execute each of the children of a template element.
void	executeChildTemplates(ElemTemplateElement elem, Node context, QName mode, ContentHandler handler) **For advanced use only** Execute each of the children of a template element.
void	executeFromSnapshot(TransformSnapshot ts) This will execute the following XSLT instructions from the snapshot point, after the stylesheet execution context has been reset from the snapshot point.
java.lang.Object	extFunction(java.lang.String ns, java.lang.String funcName, java.util.Vector argVec, java.lang.Object methodKey)
boolean	functionAvailable(java.lang.String ns, java.lang.String funcName)
java.lang.String	getBaseURLOfSource() Get the base URL of the source.
ContentHandler	getContentHandler() Get the content event handler.
DTMIterator	getContextNodeList() Get the current context node list.
CountersTable	getCountersTable() Get the table of counters, for optimized xsl:number support.
ElemTemplateElement	getCurrentElement() Retrieves the current ElemTemplateElement that is being executed.
int	getCurrentNode() This method retrieves the current context node in the source tree.
ElemTemplate	getCurrentTemplate() This method retrieves the xsl:template that is in effect, which may be a matched template or a named template.
ObjectStack	getCurrentTemplateElements() Get the count of how many elements are active.
int	getCurrentTemplateElementsCount() Get the count of how many elements are active.
java.util.Vector	getElementCallstack() Get the stack of ElemTemplateElements.
ErrorListener	getErrorListener() Get the current error event handler.
java.lang.Exception	getExceptionThrown() Get the exception thrown by the secondary thread (normally the transform thread).
ExtensionsTable	getExtensionsTable() Get the extensions table object.
boolean	getFeature(java.lang.String name) Look up the value of a feature.
ContentHandler	getInputContentHandler() Get a SAX2 ContentHandler for the input.
ContentHandler	getInputContentHandler(boolean doDocFrag) Get a SAX2 ContentHandler for the input.
DeclHandler	getInputDeclHandler() Get a SAX2 DeclHandler for the input.
LexicalHandler	getInputLexicalHandler() Get a SAX2 LexicalHandler for the input.
KeyManager	getKeyManager() Get the KeyManager object.
int	getMatchedNode() Retrieves the node in the source tree that matched the template obtained via getMatchedTemplate().
ElemTemplate	getMatchedTemplate() This method retrieves the xsl:template that was matched.
QName	getMode() NEEDSDOC Method getMode NEEDSDOC (getMode) @return
MsgMgr	getMsgMgr() Return the message manager.
OutputProperties	getOutputFormat() Get the output properties used for the transformation.
java.util.Properties	getOutputProperties() Get a copy of the output properties for the transformation.
java.lang.String	getOutputProperty(java.lang.String qnameString) Get an output property that is in effect for the transformation.
java.lang.String	getOutputPropertyNoDefault(java.lang.String qnameString) Get the value of a property, without using the default properties.
Result	getOutputTarget() Get the original output target.
java.lang.Object	getParameter(java.lang.String name) Get a parameter that was explicitly set with setParameter or setParameters.
boolean	getProperty(java.lang.String property) getProperty returns the current setting of the property described by the property argument.
boolean	getQuietConflictWarnings() Get quietConflictWarnings property.
int	getRecursionLimit() Get the recursion limit.
ResultTreeHandler	getResultTreeHandler() Get the ResultTreeHandler object.
Serializer	getSerializer() **For internal use only** Get the current serializer in use, which may well not be the main serializer (for instance, this may well be a text serializer for string creation from templates).
short	getShouldStripSpace(int elementHandle, DTM dtm) Test whether whitespace-only text nodes are visible in the logical view of DTM.
TransformSnapshot	getSnapshot() This will get a snapshot of the current executing context
StackGuard	getStackGuard() **For internal use only** Get the object used to guard the stack from recursion.
ObjectPool	getStringWriterPool() **For internal use only** Get the StringWriter pool, so that StringWriter objects may be reused.
StylesheetRoot	getStylesheet() Get the current stylesheet for this processor.
java.util.Vector	getTemplateCallstack() Get the call stack of xsl:template elements.
TraceManager	getTraceManager() Get an instance of the trace manager for this transformation.
Transformer	getTransformer() Get the TrAX Transformer object in effect.
java.lang.Thread	getTransformThread() **For internal use only** Get the thread that the transform process is on.
URIResolver	getURIResolver() Get an object that will be used to resolve URIs used in document(), etc.
XPathContext	getXPathContext() Get the XPath context associated with this transformer.
boolean	hasTransformThreadErrorCatcher() Return true if the transform was initiated from the transform method, otherwise it was probably done from a pure parse events.
boolean	isParserEventsOnMain() **Experimental** Get true if the parser events should be on the main thread, false if not.
boolean	isRecursiveAttrSet(ElemAttributeSet attrSet) Check to see if this is a recursive attribute definition.
boolean	isTransformDone() Tell if the transform method is completed.
void	popCurrentMatched() Pop the elements that were pushed via pushPairCurrentMatched.
void	popCurrentTemplateRuleIsNull() Push true if the current template rule is null, false otherwise.
void	popElemAttributeSet() Pop the current executing attribute set.
void	popElemTemplateElement() Pop the current template element.
void	popMode() NEEDSDOC Method popMode
java.util.Vector	processSortKeys(ElemForEach foreach, int sourceNodeContext) **For advanced use only** Get the keys for the xsl:sort elements.
void	pushCurrentTemplateRuleIsNull(boolean b) Push true if the current template rule is null, false otherwise.
void	pushElemAttributeSet(ElemAttributeSet attrSet) Push an executing attribute set, so we can check for recursive attribute definitions.
void	pushElemTemplateElement(ElemTemplateElement elem) Push the current template element.
void	pushMode(QName mode) NEEDSDOC Method pushMode NEEDSDOC @param mode
void	pushPairCurrentMatched(ElemTemplateElement template, int child) Push both the current xsl:template or xsl:for-each onto the stack, along with the child node that was matched.
void	reset() Reset the state.
void	resetToStylesheet(TransformSnapshot ts) This will reset the stylesheet execution context from the snapshot point.
void	run() Run the transform thread.
void	runTransformThread() Called by this.transform() if isParserEventsOnMain()==false.
void	runTransformThread(int priority) Called by SourceTreeHandler to start the transformation in a separate thread NEEDSDOC @param priority
static void	runTransformThread(java.lang.Runnable runnable) Called by CoRoutineSAXParser.
void	setBaseURLOfSource(java.lang.String base) Get the base URL of the source.
void	setContentHandler(ContentHandler handler) Set the content event handler.
void	setCurrentElement(ElemTemplateElement e) Set the top of the current template elements stack.
void	setErrorListener(ErrorListener listener) Set the error event listener.
void	setExceptionThrown(java.lang.Exception e) Set the exception thrown by the secondary thread (normally the transform thread).
void	setIsTransformDone(boolean done) Set if the transform method is completed.
void	setOutputFormat(OutputProperties oformat) Set the output properties for the transformation.
void	setOutputProperties(java.util.Properties oformat) Set the output properties for the transformation.
void	setOutputProperty(java.lang.String name, java.lang.String value) Set the value of a property.
void	setOutputTarget(Result outputTarget) Set the original output target.
void	setParameter(java.lang.String name, java.lang.Object value) Set a parameter for the transformation.
void	setParameter(java.lang.String name, java.lang.String namespace, java.lang.Object value) Set a parameter for the templates.
void	setParameters(java.util.Properties params) Set a bag of parameters for the transformation.
void	setProperty(java.lang.String property, java.lang.Object value) Set a runtime property for this TransformerImpl.
void	setQuietConflictWarnings(boolean b) If the quietConflictWarnings property is set to true, warnings about pattern conflicts won't be printed to the diagnostics stream.
void	setRecursionLimit(int limit) Set the recursion limit.
void	setSerializer(Serializer s) **For internal use only** Set the current serializer.
void	setShouldReset(boolean shouldReset) NEEDSDOC Method setShouldReset NEEDSDOC @param shouldReset
void	setSourceTreeDocForThread(int doc) This is just a way to set the document for run().
void	setStylesheet(StylesheetRoot stylesheetRoot) Set the stylesheet for this processor.
static void	setThreadControler(TransformerImpl.ThreadControler tp) Change the ThreadControler that will be used to manage the transform threads.
void	setTransformThread(java.lang.Thread t) **For internal use only** Get the thread that the transform process is on.
void	setURIResolver(URIResolver resolver) Set an object that will be used to resolve URIs used in document(), etc.
void	setXMLSource(Source source) Set the input source for the source tree, which is needed if the parse thread is not the main thread, in order for the parse thread's run method to get to the input source.
void	setXPathContext(XPathContext xcontext) **For internal use only** Set the execution context for XPath.
void	stopTransformation() NEEDSDOC Method stopTransformation
void	transform(Source source) Process the source tree to SAX parse events.
void	transform(Source source, boolean shouldRelease) Process the source tree to SAX parse events.
void	transform(Source xmlSource, Result outputTarget) Process the source tree to the output result.
void	transform(Source xmlSource, Result outputTarget, boolean shouldRelease) Process the source tree to the output result.
void	transformNode(int node) Process the source node to the output result, if the processor supports the "http://xml.org/trax/features/dom/input" feature.
void	transformNode(int node, Result outputTarget) Process the source node to the output result, if the processor supports the "http://xml.org/trax/features/dom/input" feature.
int	transformToGlobalRTF(ElemTemplateElement templateParent) **For advanced use only** Given a stylesheet element, create a result tree fragment from it's contents.
int	transformToRTF(ElemTemplateElement templateParent) **For advanced use only** Given a stylesheet element, create a result tree fragment from it's contents.
java.lang.String	transformToString(ElemTemplateElement elem) **For advanced use only** Take the contents of a template element, process it, and convert it to a string.
void	waitTransformThread() Used by SourceTreeHandler to wait until the transform completes

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

S_DEBUG

public static boolean S_DEBUG

This is a compile-time flag to turn off calling of trace listeners. Set this to false for optimization purposes.

Constructor Detail

TransformerImpl

public TransformerImpl(StylesheetRoot stylesheet)

Construct a TransformerImpl.

Parameters:

stylesheet - The root of the stylesheet tree.

Method Detail

setShouldReset

public void setShouldReset(boolean shouldReset)

NEEDSDOC Method setShouldReset NEEDSDOC @param shouldReset

getExtensionsTable

public ExtensionsTable getExtensionsTable()

Get the extensions table object.

Returns:

The extensions table.

functionAvailable

public boolean functionAvailable(java.lang.String ns,
                                 java.lang.String funcName)
                          throws TransformerException

Specified by:

functionAvailable in interface ExtensionsProvider

elementAvailable

public boolean elementAvailable(java.lang.String ns,
                                java.lang.String elemName)
                         throws TransformerException

Specified by:

elementAvailable in interface ExtensionsProvider

extFunction

public java.lang.Object extFunction(java.lang.String ns,
                                    java.lang.String funcName,
                                    java.util.Vector argVec,
                                    java.lang.Object methodKey)
                             throws TransformerException

Specified by:

extFunction in interface ExtensionsProvider

reset

public void reset()

Reset the state. This needs to be called after a process() call is invoked, if the processor is to be used again.

getProperty

public boolean getProperty(java.lang.String property)

getProperty returns the current setting of the property described by the property argument. %REVIEW% Obsolete now that source_location is handled in the TransformerFactory?

Parameters:

property - a String value

Returns:

a boolean value

setProperty

public void setProperty(java.lang.String property,
                        java.lang.Object value)

Set a runtime property for this TransformerImpl. %REVIEW% Obsolete now that source_location is handled in the TransformerFactory?

Parameters:

property - a String value

value - an Object value

isParserEventsOnMain

public boolean isParserEventsOnMain()

**Experimental** Get true if the parser events should be on the main thread, false if not. Experimental. Can not be set right now.

Returns:

true if the parser events should be on the main thread, false if not.

getTransformThread

public java.lang.Thread getTransformThread()

**For internal use only** Get the thread that the transform process is on.

Returns:

The thread that the transform process is on, or null.

setTransformThread

public void setTransformThread(java.lang.Thread t)

**For internal use only** Get the thread that the transform process is on.

Parameters:

t - The transform thread, may be null.

hasTransformThreadErrorCatcher

public boolean hasTransformThreadErrorCatcher()

Return true if the transform was initiated from the transform method, otherwise it was probably done from a pure parse events. NEEDSDOC ($objectName$) @return

transform

public void transform(Source source)
               throws TransformerException

Process the source tree to SAX parse events.

Parameters:

source - The input for the source tree.

Throws:

TransformerException -

transform

public void transform(Source source,
                      boolean shouldRelease)
               throws TransformerException

Process the source tree to SAX parse events.

Parameters:

source - The input for the source tree.

shouldRelease - Flag indicating whether to release DTMManager.

Throws:

TransformerException -

getBaseURLOfSource

public java.lang.String getBaseURLOfSource()

Get the base URL of the source.

Returns:

The base URL of the source tree, or null.

setBaseURLOfSource

public void setBaseURLOfSource(java.lang.String base)

Get the base URL of the source. NEEDSDOC @param base

Returns:

The base URL of the source tree, or null.

getOutputTarget

public Result getOutputTarget()

Get the original output target.

Returns:

The Result object used to kick of the transform or null.

setOutputTarget

public void setOutputTarget(Result outputTarget)

Set the original output target. This is useful when using a SAX transform and supplying a ContentHandler or when the URI of the output target should not be the same as the systemID of the original output target. NEEDSDOC @param outputTarget

getOutputProperty

public java.lang.String getOutputProperty(java.lang.String qnameString)
                                   throws java.lang.IllegalArgumentException

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.

Parameters:

name - A non-null String that specifies an output property name, which may be namespace qualified. NEEDSDOC @param qnameString

Returns:

The string value of the output property, or null if no property was found.

Throws:

java.lang.IllegalArgumentException - If the property is not supported.

Overrides:

getOutputProperty in class Transformer

See Also:

OutputKeys

getOutputPropertyNoDefault

public java.lang.String getOutputPropertyNoDefault(java.lang.String qnameString)
                                            throws java.lang.IllegalArgumentException

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.

Parameters:

name - The property name, which is a fully-qualified URI. NEEDSDOC @param qnameString

Returns:

The value of the property, or null if not found.

Throws:

java.lang.IllegalArgumentException - If the property is not supported, and is not namespaced.

setOutputProperty

public void setOutputProperty(java.lang.String name,
                              java.lang.String value)
                       throws java.lang.IllegalArgumentException

Set the value of a property. Recognized properties are:

"http://xml.apache.org/xslt/sourcebase" - the base URL for the source, which is needed when pure SAX ContentHandler transformation is to be done.

Parameters:

name - The property name, which is a fully-qualified URI.

value - The requested value for the property.

Throws:

java.lang.IllegalArgumentException - if the property name is not legal.

Overrides:

setOutputProperty in class Transformer

setOutputProperties

public void setOutputProperties(java.util.Properties oformat)
                         throws java.lang.IllegalArgumentException

Set the output properties for the transformation. These properties will override properties set in the templates with xsl:output.

If argument to this function is null, any properties previously set will be removed.

Parameters:

oformat - A set of output properties that will be used to override any of the same properties in effect for the transformation.

Throws:

java.lang.IllegalArgumentException - if any of the argument keys are not recognized and are not namespace qualified.

Overrides:

setOutputProperties in class Transformer

See Also:

OutputKeys, Properties

getOutputProperties

public java.util.Properties getOutputProperties()

Get a copy of the output properties for the transformation. These properties will override properties set in the templates with xsl:output.

Note that mutation of the Properties object returned will not effect the properties that the transformation contains.

Overrides:

getOutputProperties in class Transformer

createResultContentHandler

public ContentHandler createResultContentHandler(Result outputTarget)
                                          throws TransformerException

Create a result ContentHandler from a Result object, based on the current OutputProperties.

Parameters:

outputTarget - Where the transform result should go, should not be null.

Returns:

A valid ContentHandler that will create the result tree when it is fed SAX events.

Throws:

TransformerException -

createResultContentHandler

public ContentHandler createResultContentHandler(Result outputTarget,
                                                 OutputProperties format)
                                          throws TransformerException

Create a ContentHandler from a Result object and an OutputProperties.

Parameters:

outputTarget - Where the transform result should go, should not be null.

format - The OutputProperties object that will contain instructions on how to serialize the output.

Returns:

A valid ContentHandler that will create the result tree when it is fed SAX events.

Throws:

TransformerException -

transform

public void transform(Source xmlSource,
                      Result outputTarget)
               throws TransformerException

Process the source tree to the output result.

Parameters:

xmlSource - The input for the source tree.

outputTarget - The output source target.

Throws:

TransformerException -

Overrides:

transform in class Transformer

transform

public void transform(Source xmlSource,
                      Result outputTarget,
                      boolean shouldRelease)
               throws TransformerException

Process the source tree to the output result.

Parameters:

xmlSource - The input for the source tree.

outputTarget - The output source target.

shouldRelease - Flag indicating whether to release DTMManager.

Throws:

TransformerException -

transformNode

public void transformNode(int node,
                          Result outputTarget)
                   throws TransformerException

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?

Parameters:

node - The input source node, which can be any valid DTM node.

outputTarget - The output source target.

Throws:

TransformerException -

transformNode

public void transformNode(int node)
                   throws TransformerException

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?

Parameters:

node - The input source node, which can be any valid DTM node.

outputTarget - The output source target.

Throws:

TransformerException -

getInputContentHandler

public ContentHandler getInputContentHandler()

Get a SAX2 ContentHandler for the input.

Returns:

A valid ContentHandler, which should never be null, as long as getFeature("http://xml.org/trax/features/sax/input") returns true.

getInputContentHandler

public ContentHandler getInputContentHandler(boolean doDocFrag)

Get a SAX2 ContentHandler for the input.

Parameters:

doDocFrag - true if a DocumentFragment should be created as the root, rather than a Document.

Returns:

A valid ContentHandler, which should never be null, as long as getFeature("http://xml.org/trax/features/sax/input") returns true.

getInputDeclHandler

public DeclHandler getInputDeclHandler()

Get a SAX2 DeclHandler for the input.

Returns:

A valid DeclHandler, which should never be null, as long as getFeature("http://xml.org/trax/features/sax/input") returns true.

getInputLexicalHandler

public LexicalHandler getInputLexicalHandler()

Get a SAX2 LexicalHandler for the input.

Returns:

A valid LexicalHandler, which should never be null, as long as getFeature("http://xml.org/trax/features/sax/input") returns true.

setOutputFormat

public void setOutputFormat(OutputProperties oformat)

Set the output properties for the transformation. These properties will override properties set in the templates with xsl:output.

Parameters:

oformat - A valid OutputProperties object (which will not be mutated), or null.

getOutputFormat

public OutputProperties getOutputFormat()

Get the output properties used for the transformation.

Returns:

the output format that was set by the user, otherwise the output format from the stylesheet.

getSerializer

public Serializer getSerializer()

**For internal use only** Get the current serializer in use, which may well not be the main serializer (for instance, this may well be a text serializer for string creation from templates).

Returns:

The current serializer, or null if there is none.

setSerializer

public void setSerializer(Serializer s)

**For internal use only** Set the current serializer.

Parameters:

s - The current serializer, or null.

setParameter

public void setParameter(java.lang.String name,
                         java.lang.String namespace,
                         java.lang.Object value)

Set a parameter for the templates.

Parameters:

name - The name of the parameter.

namespace - The namespace of the parameter.

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.

setParameter

public void setParameter(java.lang.String name,
                         java.lang.Object value)

Set a parameter for the transformation.

Parameters:

name - The name of the parameter, which may have a namespace URI.

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.

Overrides:

setParameter in class Transformer

getParameter

public java.lang.Object getParameter(java.lang.String name)

Get a parameter that was explicitly set with setParameter or setParameters. NEEDSDOC @param name

Returns:

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).

Overrides:

getParameter in class Transformer

setParameters

public void setParameters(java.util.Properties params)

Set a bag of parameters for the transformation. Note that these will not be additive, they will replace the existing set of parameters.

Parameters:

name - The name of the parameter, which may have a namespace URI.

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. NEEDSDOC @param params

clearParameters

public void clearParameters()

Reset the parameters to a null list.

Overrides:

clearParameters in class Transformer

setURIResolver

public void setURIResolver(URIResolver resolver)

Set an object that will be used to resolve URIs used in document(), etc.

Parameters:

resolver - An object that implements the URIResolver interface, or null.

Overrides:

setURIResolver in class Transformer

getURIResolver

public URIResolver getURIResolver()

Get an object that will be used to resolve URIs used in document(), etc.

Returns:

An object that implements the URIResolver interface, or null.

Overrides:

getURIResolver in class Transformer

setContentHandler

public void setContentHandler(ContentHandler handler)

Set the content event handler.

Parameters:

resolver - The new content handler. NEEDSDOC @param handler

Throws:

java.lang.NullPointerException - If the handler is null.

See Also:

XMLReader.setContentHandler(org.xml.sax.ContentHandler)

getContentHandler

public ContentHandler getContentHandler()

Get the content event handler.

Returns:

The current content handler, or null if none was set.

See Also:

XMLReader.getContentHandler()

transformToRTF

public int transformToRTF(ElemTemplateElement templateParent)
                   throws TransformerException

**For advanced use only** 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.

Parameters:

templateParent - The template element that holds the fragment.

Returns:

the NodeHandle for the root node of the resulting RTF.

Throws:

TransformerException -

transformToGlobalRTF

public int transformToGlobalRTF(ElemTemplateElement templateParent)
                         throws TransformerException

**For advanced use only** 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.

Parameters:

templateParent - The template element that holds the fragment.

Returns:

the NodeHandle for the root node of the resulting RTF.

Throws:

TransformerException -

getStringWriterPool

public ObjectPool getStringWriterPool()

**For internal use only** Get the StringWriter pool, so that StringWriter objects may be reused.

Returns:

The string writer pool, not null.

transformToString

public java.lang.String transformToString(ElemTemplateElement elem)
                                   throws TransformerException

**For advanced use only** Take the contents of a template element, process it, and convert it to a string.

Parameters:

elem - The parent element whose children will be output as a string.

transformer - The XSLT transformer instance.

sourceNode - The current source node context.

mode - The current xslt mode.

Returns:

The stringized result of executing the elements children.

Throws:

TransformerException -

applyTemplateToNode

public boolean applyTemplateToNode(ElemTemplateElement xslInstruction,
                                   ElemTemplate template,
                                   int child)
                            throws TransformerException

**For advanced use only** Given an element and mode, find the corresponding template and process the contents.

Parameters:

xslInstruction - The calling element.

template - The template to use if xsl:for-each, or null.

child - The source context node.

mode - The current mode, may be null.

Returns:

true if applied a template, false if not.

Throws:

TransformerException -

executeChildTemplates

public void executeChildTemplates(ElemTemplateElement elem,
                                  Node context,
                                  QName mode,
                                  ContentHandler handler)
                           throws TransformerException

**For advanced use only** Execute each of the children of a template element. This method is only for extension use.

Parameters:

elem - The ElemTemplateElement that contains the children that should execute.

sourceNode - The current context node. NEEDSDOC @param context

mode - The current mode.

handler - The ContentHandler to where the result events should be fed.

Throws:

TransformerException -

executeChildTemplates

public void executeChildTemplates(ElemTemplateElement elem,
                                  ContentHandler handler)
                           throws TransformerException

**For advanced use only** Execute each of the children of a template element.

Parameters:

elem - The ElemTemplateElement that contains the children that should execute.

handler - The ContentHandler to where the result events should be fed.

Throws:

TransformerException -

executeChildTemplates

public void executeChildTemplates(ElemTemplateElement elem,
                                  boolean shouldAddAttrs)
                           throws TransformerException

**For advanced use only** Execute each of the children of a template element.

Parameters:

transformer - The XSLT transformer instance.

elem - The ElemTemplateElement that contains the children that should execute.

sourceNode - The current context node.

mode - The current mode.

shouldAddAttrs - true if xsl:attributes should be executed.

Throws:

TransformerException -

processSortKeys

public java.util.Vector processSortKeys(ElemForEach foreach,
                                        int sourceNodeContext)
                                 throws TransformerException

**For advanced use only** Get the keys for the xsl:sort elements. Note: Should this go into ElemForEach?

Parameters:

foreach - Valid ElemForEach element, not null.

sourceNodeContext - The current node context in the source tree, needed to evaluate the Attribute Value Templates.

Returns:

A Vector of NodeSortKeys, or null.

Throws:

TransformerException -

getElementCallstack

public java.util.Vector getElementCallstack()

Get the stack of ElemTemplateElements.

Returns:

A copy of stack that contains the xsl element instructions, the earliest called in index zero, and the latest called in index size()-1.

getCurrentTemplateElementsCount

public int getCurrentTemplateElementsCount()

Get the count of how many elements are active.

Returns:

The number of active elements on the currentTemplateElements stack.

getCurrentTemplateElements

public ObjectStack getCurrentTemplateElements()

Get the count of how many elements are active.

Returns:

The number of active elements on the currentTemplateElements stack.

pushElemTemplateElement

public void pushElemTemplateElement(ElemTemplateElement elem)

Push the current template element.

Parameters:

elem - The current ElemTemplateElement (may be null, and then set via setCurrentElement).

popElemTemplateElement

public void popElemTemplateElement()

Pop the current template element.

setCurrentElement

public void setCurrentElement(ElemTemplateElement e)

Set the top of the current template elements stack.

Parameters:

e - The current ElemTemplateElement about to be executed.

getCurrentElement

public ElemTemplateElement getCurrentElement()

Retrieves the current ElemTemplateElement that is being executed.

Returns:

The current ElemTemplateElement that is executing, should not normally be null.

getCurrentNode

public int getCurrentNode()

This method retrieves the current context node in the source tree.

Returns:

The current context node (should never be null?).

getTemplateCallstack

public java.util.Vector getTemplateCallstack()

Get the call stack of xsl:template elements.

Returns:

A copy of stack that contains the xsl:template (ElemTemplate) instructions, the earliest called in index zero, and the latest called in index size()-1.

getCurrentTemplate

public ElemTemplate getCurrentTemplate()

This method retrieves the xsl:template that is in effect, which may be a matched template or a named template.

Please note that the ElemTemplate returned may be a default template, and thus may not have a template defined in the stylesheet.

Returns:

The current xsl:template, should not be null.

pushPairCurrentMatched

public void pushPairCurrentMatched(ElemTemplateElement template,
                                   int child)

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)

Parameters:

template - xsl:template or xsl:for-each.

child - The child that was matched.

popCurrentMatched

public void popCurrentMatched()

Pop the elements that were pushed via pushPairCurrentMatched.

getMatchedTemplate

public ElemTemplate getMatchedTemplate()

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.

Returns:

The pushed template that was pushed via pushPairCurrentMatched.

getMatchedNode

public int getMatchedNode()

Retrieves the node in the source tree that matched the template obtained via getMatchedTemplate().

Returns:

The matched node that corresponds to the match attribute of the current xsl:template.

getContextNodeList

public DTMIterator getContextNodeList()

Get the current context node list.

Returns:

A reset clone of the context node list.

getTransformer

public Transformer getTransformer()

Get the TrAX Transformer object in effect.

Returns:

This object.

setStylesheet

public void setStylesheet(StylesheetRoot stylesheetRoot)

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.

Parameters:

stylesheetRoot - A non-null StylesheetRoot object, or null if you wish to clear the stylesheet reference.

getStylesheet

public final StylesheetRoot getStylesheet()

Get the current stylesheet for this processor.

Returns:

The stylesheet that is associated with this transformer.

getQuietConflictWarnings

public boolean getQuietConflictWarnings()

Get quietConflictWarnings property. If the quietConflictWarnings property is set to true, warnings about pattern conflicts won't be printed to the diagnostics stream.

Returns:

True if this transformer should not report template match conflicts.

setQuietConflictWarnings

public void setQuietConflictWarnings(boolean b)

If the quietConflictWarnings property is set to true, warnings about pattern conflicts won't be printed to the diagnostics stream. False by default. (Currently setting this property will have no effect.)

Parameters:

b - true if conflict warnings should be suppressed.

setXPathContext

public void setXPathContext(XPathContext xcontext)

**For internal use only** Set the execution context for XPath.

Parameters:

xcontext - A non-null reference to the XPathContext associated with this transformer.

getXPathContext

public final XPathContext getXPathContext()

Get the XPath context associated with this transformer.

Returns:

The XPathContext reference, never null.

getStackGuard

public StackGuard getStackGuard()

**For internal use only** Get the object used to guard the stack from recursion.

Returns:

The StackGuard object, which should never be null.

getRecursionLimit

public int getRecursionLimit()

Get the recursion limit. Used for infinite loop check. If the value is -1, do not check for infinite loops. Anyone who wants to enable that check should change the value of this variable to be the level of recursion that they want to check. Be careful setting this variable, if the number is too low, it may report an infinite loop situation, when there is none. Post version 1.0.0, we'll make this a runtime feature.

Returns:

The limit on recursion, or -1 if no check is to be made.

setRecursionLimit

public void setRecursionLimit(int limit)

Set the recursion limit. Used for infinite loop check. If the value is -1, do not check for infinite loops. Anyone who wants to enable that check should change the value of this variable to be the level of recursion that they want to check. Be careful setting this variable, if the number is too low, it may report an infinite loop situation, when there is none. Post version 1.0.0, we'll make this a runtime feature.

Parameters:

limit - A number that represents the limit of recursion, or -1 if no checking is to be done.

getResultTreeHandler

public ResultTreeHandler getResultTreeHandler()

Get the ResultTreeHandler object.

Returns:

The current ResultTreeHandler, which may not be the main result tree manager.

getKeyManager

public KeyManager getKeyManager()

Get the KeyManager object.

Returns:

A reference to the KeyManager object, which should never be null.

isRecursiveAttrSet

public boolean isRecursiveAttrSet(ElemAttributeSet attrSet)

Check to see if this is a recursive attribute definition.

Parameters:

attrSet - A non-null ElemAttributeSet reference.

Returns:

true if the attribute set is recursive.

pushElemAttributeSet

public void pushElemAttributeSet(ElemAttributeSet attrSet)

Push an executing attribute set, so we can check for recursive attribute definitions.

Parameters:

attrSet - A non-null ElemAttributeSet reference.

popElemAttributeSet

public void popElemAttributeSet()

Pop the current executing attribute set.

getCountersTable

public CountersTable getCountersTable()

Get the table of counters, for optimized xsl:number support.

Returns:

The CountersTable, never null.

currentTemplateRuleIsNull

public boolean currentTemplateRuleIsNull()

Tell if the current template rule is null, i.e. if we are directly within an apply-templates. Used for xsl:apply-imports.

Returns:

True if the current template rule is null.

pushCurrentTemplateRuleIsNull

public void pushCurrentTemplateRuleIsNull(boolean b)

Push true if the current template rule is null, false otherwise.

Parameters:

b - True if the we are executing an xsl:for-each (or xsl:call-template?).

popCurrentTemplateRuleIsNull

public void popCurrentTemplateRuleIsNull()

Push true if the current template rule is null, false otherwise.

getMsgMgr

public MsgMgr getMsgMgr()

Return the message manager.

Returns:

The message manager, never null.

setErrorListener

public void setErrorListener(ErrorListener listener)
                      throws java.lang.IllegalArgumentException

Set the error event listener.

Parameters:

listener - The new error listener.

Throws:

java.lang.IllegalArgumentException - if

Overrides:

setErrorListener in class Transformer

getErrorListener

public ErrorListener getErrorListener()

Get the current error event handler.

Returns:

The current error handler, which should never be null.

Overrides:

getErrorListener in class Transformer

getTraceManager

public TraceManager getTraceManager()

Get an instance of the trace manager for this transformation. This object can be used to set trace listeners on various events during the transformation.

Returns:

A reference to the TraceManager, never null.

getFeature

public boolean getFeature(java.lang.String name)
                   throws SAXNotRecognizedException,
                          SAXNotSupportedException

Look up the value of a feature.

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.

Open issues:

Should getFeature be changed to hasFeature?

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.

Parameters:

name - The feature name, which is a fully-qualified URI.

Returns:

The current state of the feature (true or false).

Throws:

SAXNotRecognizedException - When the TransformerFactory does not recognize the feature name.

SAXNotSupportedException - When the TransformerFactory recognizes the feature name but cannot determine its value at this time.

SAXNotRecognizedException -

SAXNotSupportedException -

getMode

public QName getMode()

NEEDSDOC Method getMode NEEDSDOC (getMode) @return

pushMode

public void pushMode(QName mode)

NEEDSDOC Method pushMode NEEDSDOC @param mode

popMode

public void popMode()

NEEDSDOC Method popMode

setThreadControler

public static void setThreadControler(TransformerImpl.ThreadControler tp)

Change the ThreadControler that will be used to manage the transform threads. NEEDSDOC @param tp

runTransformThread

public void runTransformThread(int priority)

Called by SourceTreeHandler to start the transformation in a separate thread NEEDSDOC @param priority

runTransformThread

public void runTransformThread()

Called by this.transform() if isParserEventsOnMain()==false. Similar with runTransformThread(), but no priority is set and setTransformThread is not set.

runTransformThread

public static void runTransformThread(java.lang.Runnable runnable)

Called by CoRoutineSAXParser. Launches the CoroutineSAXParser in a thread, and prepares it to invoke the parser from that thread upon request.

waitTransformThread

public void waitTransformThread()
                         throws SAXException

Used by SourceTreeHandler to wait until the transform completes

Throws:

SAXException -

getExceptionThrown

public java.lang.Exception getExceptionThrown()

Get the exception thrown by the secondary thread (normally the transform thread).

Returns:

The thrown exception, or null if no exception was thrown.

setExceptionThrown

public void setExceptionThrown(java.lang.Exception e)

Set the exception thrown by the secondary thread (normally the transform thread).

Parameters:

e - The thrown exception, or null if no exception was thrown.

setSourceTreeDocForThread

public void setSourceTreeDocForThread(int doc)

This is just a way to set the document for run().

Parameters:

doc - A non-null reference to the root of the tree to be transformed.

setXMLSource

public void setXMLSource(Source source)

Set the input source for the source tree, which is needed if the parse thread is not the main thread, in order for the parse thread's run method to get to the input source.

Parameters:

source - The input source for the source tree.

isTransformDone

public boolean isTransformDone()

Tell if the transform method is completed.

Returns:

True if transformNode has completed, or an exception was thrown.

setIsTransformDone

public void setIsTransformDone(boolean done)

Set if the transform method is completed.

Parameters:

done - True if transformNode has completed, or an exception was thrown.

run

public void run()

Run the transform thread.

Specified by:

run in interface java.lang.Runnable

getSnapshot

public TransformSnapshot getSnapshot()

This will get a snapshot of the current executing context

Returns:

TransformerSnapshot object, snapshot of executing context

executeFromSnapshot

public void executeFromSnapshot(TransformSnapshot ts)
                         throws TransformerException

This will execute the following XSLT instructions from the snapshot point, after the stylesheet execution context has been reset from the snapshot point.

Parameters:

ts - The snapshot of where to start execution

Throws:

TransformerException -

resetToStylesheet

public void resetToStylesheet(TransformSnapshot ts)

This will reset the stylesheet execution context from the snapshot point.

Parameters:

ts - The snapshot of where to start execution

stopTransformation

public void stopTransformation()

NEEDSDOC Method stopTransformation

getShouldStripSpace

public short getShouldStripSpace(int elementHandle,
                                 DTM dtm)

Test whether whitespace-only text nodes are visible in the logical view of DTM. Normally, this function will be called by the implementation of DTM; it is not normally called directly from user code.

Specified by:

getShouldStripSpace in interface DTMWSFilter

Parameters:

elementHandle - int Handle of the element.

Returns:

one of NOTSTRIP, STRIP, or INHERIT.