/**
* Execute the function. The function must return a valid object.
*
* @param xctxt The current execution context.
* @return A valid XObject.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
String prefix;
String namespace;
String methName;
String fullName = m_arg0.execute(xctxt).str();
int indexOfNSSep = fullName.indexOf(':');
if (indexOfNSSep < 0) {
prefix = "";
namespace = Constants.S_XSLNAMESPACEURL;
methName = fullName;
} else {
prefix = fullName.substring(0, indexOfNSSep);
namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix);
if (null == namespace) return XBoolean.S_FALSE;
methName = fullName.substring(indexOfNSSep + 1);
}
if (namespace.equals(Constants.S_XSLNAMESPACEURL)) {
try {
return Keywords.functionAvailable(methName) ? XBoolean.S_TRUE : XBoolean.S_FALSE;
} catch (Exception e) {
return XBoolean.S_FALSE;
}
} else {
// dml
ExtensionsProvider extProvider = (ExtensionsProvider) xctxt.getOwnerObject();
return extProvider.functionAvailable(namespace, methName)
? XBoolean.S_TRUE
: XBoolean.S_FALSE;
}
}
/**
* For support of literal objects in xpaths.
*
* @param xctxt The XPath execution context.
* @return This object.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
if (!m_doneEval) {
this.m_transformer
.getMsgMgr()
.error(
xctxt.getSAXLocator(),
XSLTErrorResources.ER_REFERENCING_ITSELF,
new Object[] {((ElemVariable) this.object()).getName().getLocalName()});
}
VariableStack vars = xctxt.getVarStack();
// These three statements need to be combined into one operation.
int currentFrame = vars.getStackFrame();
//// vars.setStackFrame(m_varStackPos);
ElemVariable velem = (ElemVariable) m_obj;
try {
m_doneEval = false;
if (-1 != velem.m_frameSize) vars.link(velem.m_frameSize);
XObject var = velem.getValue(m_transformer, m_context);
m_doneEval = true;
return var;
} finally {
// These two statements need to be combined into one operation.
// vars.setStackFrame(currentFrame);
if (-1 != velem.m_frameSize) vars.unlink(currentFrame);
}
}
/**
* Create a NodeSetDTM, and copy the members of the given DTMIterator into it.
*
* @param iterator Iterator which yields Nodes to be made members of the new set.
*/
public NodeSetDTM(NodeIterator iterator, XPathContext xctxt) {
super();
Node node;
m_manager = xctxt.getDTMManager();
while (null != (node = iterator.nextNode())) {
int handle = xctxt.getDTMHandleFromNode(node);
addNodeInDocOrder(handle, xctxt);
}
}
/**
* Execute the first argument expression that is expected to return a string. If the argument is
* null, then get the string value from the current context node.
*
* @param xctxt Runtime XPath context.
* @return The string value of the first argument, or the string value of the current context node
* if the first argument is null.
* @throws javax.xml.transform.TransformerException if an error occurs while executing the
* argument expression.
*/
protected XMLString getArg0AsString(XPathContext xctxt)
throws javax.xml.transform.TransformerException {
if (null == m_arg0) {
int currentNode = xctxt.getCurrentNode();
if (DTM.NULL == currentNode) return XString.EMPTYSTRING;
else {
DTM dtm = xctxt.getDTM(currentNode);
return dtm.getStringValue(currentNode);
}
} else return m_arg0.execute(xctxt).xstr();
}
/** Create a NodeSetDTM, and copy the members of the given DTMIterator into it. */
public NodeSetDTM(NodeList nodeList, XPathContext xctxt) {
super();
m_manager = xctxt.getDTMManager();
int n = nodeList.getLength();
for (int i = 0; i < n; i++) {
Node node = nodeList.item(i);
int handle = xctxt.getDTMHandleFromNode(node);
// Do not reorder or strip duplicate nodes from the given DOM nodelist
addNode(handle); // addNodeInDocOrder(handle, xctxt);
}
}
/**
* Execute the first argument expression that is expected to return a number. If the argument is
* null, then get the number value from the current context node.
*
* @param xctxt Runtime XPath context.
* @return The number value of the first argument, or the number value of the current context node
* if the first argument is null.
* @throws javax.xml.transform.TransformerException if an error occurs while executing the
* argument expression.
*/
protected double getArg0AsNumber(XPathContext xctxt)
throws javax.xml.transform.TransformerException {
if (null == m_arg0) {
int currentNode = xctxt.getCurrentNode();
if (DTM.NULL == currentNode) return 0;
else {
DTM dtm = xctxt.getDTM(currentNode);
XMLString str = dtm.getStringValue(currentNode);
return str.toDouble();
}
} else return m_arg0.execute(xctxt).num();
}
/**
* Get the XObject representation of the variable.
*
* @param transformer non-null reference to the the current transform-time state.
* @param sourceNode non-null reference to the <a
* href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>.
* @return the XObject representation of the variable.
* @throws javax.xml.transform.TransformerException
*/
public XObject getValue(TransformerImpl transformer, int sourceNode) throws TransformerException {
XObject var;
XPathContext xctxt = transformer.getXPathContext();
xctxt.pushCurrentNode(sourceNode);
try {
if (null != m_selectPattern) {
var = m_selectPattern.execute(xctxt, sourceNode, this);
var.allowDetachToRelease(false);
if (transformer.getDebug())
transformer
.getTraceManager()
.fireSelectedEvent(sourceNode, this, "select", m_selectPattern, var);
} else if (null == getFirstChildElem()) {
var = XString.EMPTYSTRING;
} else {
// Use result tree fragment.
// Global variables may be deferred (see XUnresolvedVariable) and hence
// need to be assigned to a different set of DTMs than local variables
// so they aren't popped off the stack on return from a template.
int df;
// Bugzilla 7118: A variable set via an RTF may create local
// variables during that computation. To keep them from overwriting
// variables at this level, push a new variable stack.
////// PROBLEM: This is provoking a variable-used-before-set
////// problem in parameters. Needs more study.
try {
////////// xctxt.getVarStack().link(0);
if (m_parentNode instanceof Stylesheet) // Global variable
df = transformer.transformToGlobalRTF(this);
else df = transformer.transformToRTF(this);
} finally {
////////////// xctxt.getVarStack().unlink();
}
var = new XRTreeFrag(df, xctxt, this);
}
} finally {
xctxt.popCurrentNode();
}
return var;
}
/**
* Return the XPathContext to be used for evaluating expressions.
*
* <p>If the child is nested withing a forEach tag its iteration context is used. Otherwise, a new
* context is created based on an empty Document.
*
* @param child the tag whose context should be returned
* @param pageContext the current page context
* @return the XPath evaluation context
*/
public static XPathContext getContext(Tag child, PageContext pageContext) {
// if within a forEach tag, use its context
ForEachTag forEachTag = (ForEachTag) TagSupport.findAncestorWithClass(child, ForEachTag.class);
if (forEachTag != null) {
return forEachTag.getContext();
}
// otherwise, create a new context referring to an empty document
XPathContext context = new XPathContext(false);
VariableStack variableStack = new JSTLVariableStack(pageContext);
context.setVarStack(variableStack);
int dtm = context.getDTMHandleFromNode(newEmptyDocument());
context.pushCurrentNodeAndExpression(dtm, dtm);
return context;
}
/**
* Try and find a node that was previously counted. If found, return a positive integer that
* corresponds to the count.
*
* @param support The XPath context to use
* @param node The node to be counted.
* @return The count of the node, or -1 if not found.
*/
int getPreviouslyCounted(XPathContext support, int node) {
int n = m_countNodes.size();
m_countResult = 0;
for (int i = n - 1; i >= 0; i--) {
int countedNode = m_countNodes.elementAt(i);
if (node == countedNode) {
// Since the list is in backwards order, the count is
// how many are in the rest of the list.
m_countResult = i + 1 + m_countNodesStartCount;
break;
}
DTM dtm = support.getDTM(countedNode);
// Try to see if the given node falls after the counted node...
// if it does, don't keep searching backwards.
if (dtm.isNodeAfter(countedNode, node)) break;
}
return m_countResult;
}
/**
* Sort given nodes
*
* @param xctxt The XPath runtime state for the sort.
* @param keys Vector of sort keyx
* @param sourceNodes Iterator of nodes to sort
* @return iterator of sorted nodes
* @throws TransformerException
*/
public DTMIterator sortNodes(XPathContext xctxt, Vector keys, DTMIterator sourceNodes)
throws TransformerException {
NodeSorter sorter = new NodeSorter(xctxt);
sourceNodes.setShouldCacheNodes(true);
sourceNodes.runTo(-1);
xctxt.pushContextNodeList(sourceNodes);
try {
sorter.sort(sourceNodes, keys, xctxt);
sourceNodes.setCurrentPos(0);
} finally {
xctxt.popContextNodeList();
}
return sourceNodes;
}
/**
* Tell what the test score is for the given node.
*
* @param xctxt XPath runtime context.
* @param context The node being tested.
* @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_NONE}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_NSWILD}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or {@link
* org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt, int context)
throws javax.xml.transform.TransformerException {
DTM dtm = xctxt.getDTM(context);
short nodeType = dtm.getNodeType(context);
if (m_whatToShow == DTMFilter.SHOW_ALL) return m_score;
int nodeBit = (m_whatToShow & (0x00000001 << (nodeType - 1)));
switch (nodeBit) {
case DTMFilter.SHOW_DOCUMENT_FRAGMENT:
case DTMFilter.SHOW_DOCUMENT:
return SCORE_OTHER;
case DTMFilter.SHOW_COMMENT:
return m_score;
case DTMFilter.SHOW_CDATA_SECTION:
case DTMFilter.SHOW_TEXT:
// was:
// return (!xctxt.getDOMHelper().shouldStripSourceNode(context))
// ? m_score : SCORE_NONE;
return m_score;
case DTMFilter.SHOW_PROCESSING_INSTRUCTION:
return subPartMatch(dtm.getNodeName(context), m_name) ? m_score : SCORE_NONE;
// From the draft: "Two expanded names are equal if they
// have the same local part, and either both have no URI or
// both have the same URI."
// "A node test * is true for any node of the principal node type.
// For example, child::* will select all element children of the
// context node, and attribute::* will select all attributes of
// the context node."
// "A node test can have the form NCName:*. In this case, the prefix
// is expanded in the same way as with a QName using the context
// namespace declarations. The node test will be true for any node
// of the principal type whose expanded name has the URI to which
// the prefix expands, regardless of the local part of the name."
case DTMFilter.SHOW_NAMESPACE:
{
String ns = dtm.getNodeValue(context);
return (subPartMatch(ns, m_name)) ? m_score : SCORE_NONE;
}
case DTMFilter.SHOW_ATTRIBUTE:
case DTMFilter.SHOW_ELEMENT:
{
return (m_isTotallyWild
|| (subPartMatchNS(dtm.getNamespaceURI(context), m_namespace)
&& subPartMatch(dtm.getLocalName(context), m_name)))
? m_score
: SCORE_NONE;
}
default:
return SCORE_NONE;
} // end switch(testType)
}
/**
* Add the node into a vector of nodes where it should occur in document order.
*
* @param node The node to be added.
* @param test true if we should test for doc order
* @param support The XPath runtime context.
* @return insertIndex.
* @throws RuntimeException thrown if this NodeSetDTM is not of a mutable type.
*/
public int addNodeInDocOrder(int node, boolean test, XPathContext support) {
if (!m_mutable)
throw new RuntimeException(
XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_NODESETDTM_NOT_MUTABLE,
null)); // "This NodeSetDTM is not mutable!");
int insertIndex = -1;
if (test) {
// This needs to do a binary search, but a binary search
// is somewhat tough because the sequence test involves
// two nodes.
int size = size(), i;
for (i = size - 1; i >= 0; i--) {
int child = elementAt(i);
if (child == node) {
i = -2; // Duplicate, suppress insert
break;
}
DTM dtm = support.getDTM(node);
if (!dtm.isNodeAfter(node, child)) {
break;
}
}
if (i != -2) {
insertIndex = i + 1;
insertElementAt(node, insertIndex);
}
} else {
insertIndex = this.size();
boolean foundit = false;
for (int i = 0; i < insertIndex; i++) {
if (i == node) {
foundit = true;
break;
}
}
if (!foundit) addElement(node);
}
// checkDups();
return insertIndex;
} // end addNodeInDocOrder(Vector v, Object obj)
/**
* Execute the function. The function must return a valid object.
*
* @param xctxt The current execution context.
* @return A valid XObject.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
SubContextList subContextList = xctxt.getCurrentNodeList();
int currentNode = DTM.NULL;
if (null != subContextList) {
if (subContextList instanceof PredicatedNodeTest) {
LocPathIterator iter = ((PredicatedNodeTest) subContextList).getLocPathIterator();
currentNode = iter.getCurrentContextNode();
} else if (subContextList instanceof StepPattern) {
throw new RuntimeException(
XSLMessages.createMessage(XSLTErrorResources.ER_PROCESSOR_ERROR, null));
}
} else {
// not predicate => ContextNode == CurrentNode
currentNode = xctxt.getContextNode();
}
return new XNodeSet(currentNode, xctxt.getDTMManager());
}
public XNodeSetForDOM(NodeIterator nodeIter, XPathContext xctxt) {
m_dtmMgr = xctxt.getDTMManager();
m_origObj = nodeIter;
// JKESS 20020514: Longer-term solution is to force
// folks to request length through an accessor, so we can defer this
// retrieval... but that requires an API change.
// m_obj = new org.apache.xpath.NodeSetDTM(nodeIter, xctxt);
org.apache.xpath.NodeSetDTM nsdtm = new org.apache.xpath.NodeSetDTM(nodeIter, xctxt);
m_last = nsdtm.getLength();
m_obj = nsdtm;
}
/**
* Evaluate XPath string to an XObject. XPath namespace prefixes are resolved from the
* namespaceNode. The implementation of this is a little slow, since it creates a number of
* objects each time it is called. This could be optimized to keep the same objects around, but
* then thread-safety issues would arise.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param str
* @param namespaceNode The node from which prefixes in the XPath will be resolved to namespaces.
* @return An XObject, which can be used to obtain a string, number, nodelist, etc, should never
* be null.
* @see org.apache.xpath.objects.XObject
* @see org.apache.xpath.objects.XNull
* @see org.apache.xpath.objects.XBoolean
* @see org.apache.xpath.objects.XNumber
* @see org.apache.xpath.objects.XString
* @see org.apache.xpath.objects.XRTreeFrag
* @throws TransformerException
*/
public XObject eval(Node contextNode, Node xpathnode, String str, Node namespaceNode)
throws TransformerException {
// Create the XPath object.
// String str = CachedXPathFuncHereAPI.getStrFromNode(xpathnode);
// Since we don't have a XML Parser involved here, install some default support
// for things like namespaces, etc.
// (Changed from: XPathContext xpathSupport = new XPathContext();
// because XPathContext is weak in a number of areas... perhaps
// XPathContext should be done away with.)
if (this._funcHereContext == null) {
this._funcHereContext = new FuncHereContext(xpathnode, this._dtmManager);
}
// Create an object to resolve namespace prefixes.
// XPath namespaces are resolved from the input context node's document element
// if it is a root node, or else the current context node (for lack of a better
// resolution space, given the simplicity of this sample code).
PrefixResolverDefault prefixResolver =
new PrefixResolverDefault(
(namespaceNode.getNodeType() == Node.DOCUMENT_NODE)
? ((Document) namespaceNode).getDocumentElement()
: namespaceNode);
// only check if string points to different object (for performance)
if (str != xpathStr) {
if (str.indexOf("here()") > 0) {
_context.reset();
_dtmManager = _context.getDTMManager();
}
xpath = createXPath(str, prefixResolver);
xpathStr = str;
}
// Execute the XPath, and have it return the result
// return xpath.execute(xpathSupport, contextNode, prefixResolver);
int ctxtNode = this._funcHereContext.getDTMHandleFromNode(contextNode);
return xpath.execute(this._funcHereContext, ctxtNode, prefixResolver);
}
/**
* Evaluate XPath string to an XObject. XPath namespace prefixes are resolved from the
* namespaceNode. The implementation of this is a little slow, since it creates a number of
* objects each time it is called. This could be optimized to keep the same objects around, but
* then thread-safety issues would arise.
*
* @param contextNode The node to start searching from.
* @param xpathnode
* @param str
* @param prefixResolver Will be called if the parser encounters namespace prefixes, to resolve
* the prefixes to URLs.
* @return An XObject, which can be used to obtain a string, number, nodelist, etc, should never
* be null.
* @see org.apache.xpath.objects.XObject
* @see org.apache.xpath.objects.XNull
* @see org.apache.xpath.objects.XBoolean
* @see org.apache.xpath.objects.XNumber
* @see org.apache.xpath.objects.XString
* @see org.apache.xpath.objects.XRTreeFrag
* @throws TransformerException
*/
public XObject eval(Node contextNode, Node xpathnode, String str, PrefixResolver prefixResolver)
throws TransformerException {
// Since we don't have a XML Parser involved here, install some default support
// for things like namespaces, etc.
// (Changed from: XPathContext xpathSupport = new XPathContext();
// because XPathContext is weak in a number of areas... perhaps
// XPathContext should be done away with.)
// Create the XPath object.
// String str = CachedXPathFuncHereAPI.getStrFromNode(xpathnode);
// only check if string points to different object (for performance)
if (str != xpathStr) {
if (str.indexOf("here()") > 0) {
_context.reset();
_dtmManager = _context.getDTMManager();
}
try {
xpath = createXPath(str, prefixResolver);
} catch (TransformerException ex) {
// Try to see if it is a problem with the classloader.
Throwable th = ex.getCause();
if (th instanceof ClassNotFoundException) {
if (th.getMessage().indexOf("FuncHere") > 0) {
throw new RuntimeException(I18n.translate("endorsed.jdk1.4.0") /*,*/ + ex);
}
}
throw ex;
}
xpathStr = str;
}
// Execute the XPath, and have it return the result
if (this._funcHereContext == null) {
this._funcHereContext = new FuncHereContext(xpathnode, this._dtmManager);
}
int ctxtNode = this._funcHereContext.getDTMHandleFromNode(contextNode);
return xpath.execute(this._funcHereContext, ctxtNode, prefixResolver);
}
/**
* Get a local variable or parameter in the current stack frame.
*
* @param xctxt The XPath context, which must be passed in order to lazy evaluate variables.
* @param index Local variable index relative to the current stack frame bottom.
* @return The value of the variable.
* @throws TransformerException
*/
public XObject getLocalVariable(XPathContext xctxt, int index) throws TransformerException {
index += _currentFrameBottom;
XObject val = _stackFrames[index];
if (null == val)
throw new TransformerException(
XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_VARIABLE_ACCESSED_BEFORE_BIND, null),
xctxt.getSAXLocator());
// "Variable accessed before it is bound!", xctxt.getSAXLocator());
// Lazy execution of variables.
if (val.getType() == XObject.CLASS_UNRESOLVEDVARIABLE)
return (_stackFrames[index] = val.execute(xctxt));
return val;
}
/**
* Get a variable based on it's qualified name. This is for external use only.
*
* @param xctxt The XPath context, which must be passed in order to lazy evaluate variables.
* @param qname The qualified name of the variable.
* @return The evaluated value of the variable.
* @throws javax.xml.transform.TransformerException
*/
public XObject getVariableOrParam(XPathContext xctxt, org.apache.xml.utils.QName qname)
throws javax.xml.transform.TransformerException {
org.apache.xml.utils.PrefixResolver prefixResolver = xctxt.getNamespaceContext();
// Get the current ElemTemplateElement, which must be pushed in as the
// prefix resolver, and then walk backwards in document order, searching
// for an xsl:param element or xsl:variable element that matches our
// qname. If we reach the top level, use the StylesheetRoot's composed
// list of top level variables and parameters.
if (prefixResolver instanceof org.apache.xalan.templates.ElemTemplateElement) {
org.apache.xalan.templates.ElemVariable vvar;
org.apache.xalan.templates.ElemTemplateElement prev =
(org.apache.xalan.templates.ElemTemplateElement) prefixResolver;
if (!(prev instanceof org.apache.xalan.templates.Stylesheet)) {
while (!(prev.getParentNode() instanceof org.apache.xalan.templates.Stylesheet)) {
org.apache.xalan.templates.ElemTemplateElement savedprev = prev;
while (null != (prev = prev.getPreviousSiblingElem())) {
if (prev instanceof org.apache.xalan.templates.ElemVariable) {
vvar = (org.apache.xalan.templates.ElemVariable) prev;
if (vvar.getName().equals(qname)) return getLocalVariable(xctxt, vvar.getIndex());
}
}
prev = savedprev.getParentElem();
}
}
vvar = prev.getStylesheetRoot().getVariableOrParamComposed(qname);
if (null != vvar) return getGlobalVariable(xctxt, vvar.getIndex());
}
throw new javax.xml.transform.TransformerException(
XSLMessages.createXPATHMessage(
XPATHErrorResources.ER_VAR_NOT_RESOLVABLE,
new Object[] {qname.toString()})); // "Variable not resolvable: " + qname);
}
/**
* Execute the first argument expression that is expected to return a nodeset. If the argument is
* null, then return the current context node.
*
* @param xctxt Runtime XPath context.
* @return The first node of the executed nodeset, or the current context node if the first
* argument is null.
* @throws javax.xml.transform.TransformerException if an error occurs while executing the
* argument expression.
*/
protected int getArg0AsNode(XPathContext xctxt) throws javax.xml.transform.TransformerException {
return (null == m_arg0) ? xctxt.getCurrentNode() : m_arg0.asNode(xctxt);
}
/**
* Invoke a named template.
*
* @see <a href="http://www.w3.org/TR/xslt#named-templates">named-templates in XSLT
* Specification</a>
* @param transformer non-null reference to the the current transform-time state.
* @throws TransformerException
*/
public void execute(TransformerImpl transformer) throws TransformerException {
if (null != m_template) {
XPathContext xctxt = transformer.getXPathContext();
VariableStack vars = xctxt.getVarStack();
int thisframe = vars.getStackFrame();
int nextFrame = vars.link(m_template.m_frameSize);
// We have to clear the section of the stack frame that has params
// so that the default param evaluation will work correctly.
if (m_template.m_inArgsSize > 0) {
vars.clearLocalSlots(0, m_template.m_inArgsSize);
if (null != m_paramElems) {
int currentNode = xctxt.getCurrentNode();
vars.setStackFrame(thisframe);
int size = m_paramElems.length;
for (int i = 0; i < size; i++) {
ElemWithParam ewp = m_paramElems[i];
if (ewp.m_index >= 0) {
XObject obj = ewp.getValue(transformer, currentNode);
// Note here that the index for ElemWithParam must have been
// statically made relative to the xsl:template being called,
// NOT this xsl:template.
vars.setLocalVariable(ewp.m_index, obj, nextFrame);
}
}
vars.setStackFrame(nextFrame);
}
}
SourceLocator savedLocator = xctxt.getSAXLocator();
try {
xctxt.setSAXLocator(m_template);
// template.executeChildTemplates(transformer, sourceNode, mode, true);
transformer.pushElemTemplateElement(m_template);
m_template.execute(transformer);
} finally {
transformer.popElemTemplateElement();
xctxt.setSAXLocator(savedLocator);
// When we entered this function, the current
// frame buffer (cfb) index in the variable stack may
// have been manually set. If we just call
// unlink(), however, it will restore the cfb to the
// previous link index from the link stack, rather than
// the manually set cfb. So,
// the only safe solution is to restore it back
// to the same position it was on entry, since we're
// really not working in a stack context here. (Bug4218)
vars.unlink(thisframe);
}
} else {
transformer
.getMsgMgr()
.error(
this,
XSLTErrorResources.ER_TEMPLATE_NOT_FOUND,
new Object[] {
m_templateName
}); // "Could not find template named: '"+templateName+"'");
}
}
/**
* Execute the function. The function must return a valid object.
*
* @param xctxt The current execution context.
* @return A valid XObject.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
String fullName = m_arg0.execute(xctxt).str();
int indexOfNSSep = fullName.indexOf(':');
String result = null;
String propName = "";
// List of properties where the name of the
// property argument is to be looked for.
Properties xsltInfo = new Properties();
loadPropertyFile(XSLT_PROPERTIES, xsltInfo);
if (indexOfNSSep > 0) {
String prefix = (indexOfNSSep >= 0) ? fullName.substring(0, indexOfNSSep) : "";
String namespace;
namespace = xctxt.getNamespaceContext().getNamespaceForPrefix(prefix);
propName = (indexOfNSSep < 0) ? fullName : fullName.substring(indexOfNSSep + 1);
if (namespace.startsWith("http://www.w3.org/XSL/Transform")
|| namespace.equals("http://www.w3.org/1999/XSL/Transform")) {
result = xsltInfo.getProperty(propName);
if (null == result) {
warn(
xctxt,
XPATHErrorResources.WG_PROPERTY_NOT_SUPPORTED,
new Object[] {fullName}); // "XSL Property not supported: "+fullName);
return XString.EMPTYSTRING;
}
} else {
warn(
xctxt,
XPATHErrorResources.WG_DONT_DO_ANYTHING_WITH_NS,
new Object[] {
namespace, fullName
}); // "Don't currently do anything with namespace "+namespace+" in property:
// "+fullName);
try {
// if secure procession is enabled only handle required properties do not not map any
// valid system property
if (!xctxt.isSecureProcessing()) {
result = System.getProperty(propName);
} else {
warn(
xctxt,
XPATHErrorResources.WG_SECURITY_EXCEPTION,
new Object[] {
fullName
}); // "SecurityException when trying to access XSL system property: "+fullName);
}
if (null == result) {
return XString.EMPTYSTRING;
}
} catch (SecurityException se) {
warn(
xctxt,
XPATHErrorResources.WG_SECURITY_EXCEPTION,
new Object[] {
fullName
}); // "SecurityException when trying to access XSL system property: "+fullName);
return XString.EMPTYSTRING;
}
}
} else {
try {
// if secure procession is enabled only handle required properties do not not map any valid
// system property
if (!xctxt.isSecureProcessing()) {
result = System.getProperty(fullName);
} else {
warn(
xctxt,
XPATHErrorResources.WG_SECURITY_EXCEPTION,
new Object[] {
fullName
}); // "SecurityException when trying to access XSL system property: "+fullName);
}
if (null == result) {
return XString.EMPTYSTRING;
}
} catch (SecurityException se) {
warn(
xctxt,
XPATHErrorResources.WG_SECURITY_EXCEPTION,
new Object[] {
fullName
}); // "SecurityException when trying to access XSL system property: "+fullName);
return XString.EMPTYSTRING;
}
}
if (propName.equals("version") && result.length() > 0) {
try {
// Needs to return the version number of the spec we conform to.
return new XString("1.0");
} catch (Exception ex) {
return new XString(result);
}
} else return new XString(result);
}
/**
* <meta name="usage" content="advanced"/> Perform a query if needed, and call transformNode for
* each child.
*
* @param transformer non-null reference to the the current transform-time state.
* @param template The owning template context.
* @throws TransformerException Thrown in a variety of circumstances.
*/
public void transformSelectedNodes(TransformerImpl transformer) throws TransformerException {
final XPathContext xctxt = transformer.getXPathContext();
final int sourceNode = xctxt.getCurrentNode();
DTMIterator sourceNodes = m_selectExpression.asIterator(xctxt, sourceNode);
VariableStack vars = xctxt.getVarStack();
int nParams = getParamElemCount();
int thisframe = vars.getStackFrame();
StackGuard guard = transformer.getStackGuard();
boolean check = (guard.getRecursionLimit() > -1) ? true : false;
try {
final Vector keys =
(m_sortElems == null) ? null : transformer.processSortKeys(this, sourceNode);
// Sort if we need to.
if (null != keys) sourceNodes = sortNodes(xctxt, keys, sourceNodes);
if (TransformerImpl.S_DEBUG) {
transformer
.getTraceManager()
.fireSelectedEvent(
sourceNode,
this,
"select",
new XPath(m_selectExpression),
new org.apache.xpath.objects.XNodeSet(sourceNodes));
}
final ResultTreeHandler rth = transformer.getResultTreeHandler();
ContentHandler chandler = rth.getContentHandler();
final StylesheetRoot sroot = transformer.getStylesheet();
final TemplateList tl = sroot.getTemplateListComposed();
final boolean quiet = transformer.getQuietConflictWarnings();
// Should be able to get this from the iterator but there must be a bug.
DTM dtm = xctxt.getDTM(sourceNode);
int argsFrame = -1;
if (nParams > 0) {
// This code will create a section on the stack that is all the
// evaluated arguments. These will be copied into the real params
// section of each called template.
argsFrame = vars.link(nParams);
vars.setStackFrame(thisframe);
for (int i = 0; i < nParams; i++) {
ElemWithParam ewp = m_paramElems[i];
XObject obj = ewp.getValue(transformer, sourceNode);
vars.setLocalVariable(i, obj, argsFrame);
}
vars.setStackFrame(argsFrame);
}
xctxt.pushCurrentNode(DTM.NULL);
IntStack currentNodes = xctxt.getCurrentNodeStack();
xctxt.pushCurrentExpressionNode(DTM.NULL);
IntStack currentExpressionNodes = xctxt.getCurrentExpressionNodeStack();
xctxt.pushSAXLocatorNull();
xctxt.pushContextNodeList(sourceNodes);
transformer.pushElemTemplateElement(null);
// pushParams(transformer, xctxt);
int child;
while (DTM.NULL != (child = sourceNodes.nextNode())) {
currentNodes.setTop(child);
currentExpressionNodes.setTop(child);
if (xctxt.getDTM(child) != dtm) {
dtm = xctxt.getDTM(child);
}
final int exNodeType = dtm.getExpandedTypeID(child);
final int nodeType = dtm.getNodeType(child);
final QName mode = transformer.getMode();
ElemTemplate template = tl.getTemplateFast(xctxt, child, exNodeType, mode, -1, quiet, dtm);
// 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 = sroot.getDefaultRule();
// %OPT% direct faster?
break;
case DTM.ATTRIBUTE_NODE:
case DTM.CDATA_SECTION_NODE:
case DTM.TEXT_NODE:
// if(rth.m_elemIsPending || rth.m_docPending)
// rth.flushPending(true);
transformer.pushPairCurrentMatched(sroot.getDefaultTextRule(), child);
transformer.setCurrentElement(sroot.getDefaultTextRule());
// dtm.dispatchCharactersEvents(child, chandler, false);
dtm.dispatchCharactersEvents(child, rth, false);
transformer.popCurrentMatched();
continue;
case DTM.DOCUMENT_NODE:
template = sroot.getDefaultRootRule();
break;
default:
// No default rules for processing instructions and the like.
continue;
}
} else {
transformer.setCurrentElement(template);
}
transformer.pushPairCurrentMatched(template, child);
if (check) guard.checkForInfinateLoop();
int currentFrameBottom; // See comment with unlink, below
if (template.m_frameSize > 0) {
xctxt.pushRTFContext();
currentFrameBottom = vars.getStackFrame(); // See comment with unlink, below
vars.link(template.m_frameSize);
// You can't do the check for nParams here, otherwise the
// xsl:params might not be nulled.
if (
/* nParams > 0 && */ template.m_inArgsSize > 0) {
int paramIndex = 0;
for (ElemTemplateElement elem = template.getFirstChildElem();
null != elem;
elem = elem.getNextSiblingElem()) {
if (Constants.ELEMNAME_PARAMVARIABLE == elem.getXSLToken()) {
ElemParam ep = (ElemParam) elem;
int i;
for (i = 0; i < nParams; i++) {
ElemWithParam ewp = m_paramElems[i];
if (ewp.m_qnameID == ep.m_qnameID) {
XObject obj = vars.getLocalVariable(i, argsFrame);
vars.setLocalVariable(paramIndex, obj);
break;
}
}
if (i == nParams) vars.setLocalVariable(paramIndex, null);
} else break;
paramIndex++;
}
}
} else currentFrameBottom = 0;
// Fire a trace event for the template.
if (TransformerImpl.S_DEBUG) transformer.getTraceManager().fireTraceEvent(template);
// And execute the child templates.
// Loop through the children of the template, calling execute on
// each of them.
for (ElemTemplateElement t = template.m_firstChild; t != null; t = t.m_nextSibling) {
xctxt.setSAXLocator(t);
try {
transformer.pushElemTemplateElement(t);
t.execute(transformer);
} finally {
transformer.popElemTemplateElement();
}
}
if (TransformerImpl.S_DEBUG) transformer.getTraceManager().fireTraceEndEvent(template);
if (template.m_frameSize > 0) {
// See Frank Weiss bug around 03/19/2002 (no Bugzilla report yet).
// While unlink will restore to the proper place, the real position
// may have been changed for xsl:with-param, so that variables
// can be accessed.
// of right now.
// More:
// When we entered this function, the current
// frame buffer (cfb) index in the variable stack may
// have been manually set. If we just call
// unlink(), however, it will restore the cfb to the
// previous link index from the link stack, rather than
// the manually set cfb. So,
// the only safe solution is to restore it back
// to the same position it was on entry, since we're
// really not working in a stack context here. (Bug4218)
vars.unlink(currentFrameBottom);
xctxt.popRTFContext();
}
transformer.popCurrentMatched();
} // end while (DTM.NULL != (child = sourceNodes.nextNode()))
} catch (SAXException se) {
transformer.getErrorListener().fatalError(new TransformerException(se));
} finally {
if (TransformerImpl.S_DEBUG)
transformer
.getTraceManager()
.fireSelectedEndEvent(
sourceNode,
this,
"select",
new XPath(m_selectExpression),
new org.apache.xpath.objects.XNodeSet(sourceNodes));
// Unlink to the original stack frame
if (nParams > 0) vars.unlink(thisframe);
xctxt.popSAXLocator();
xctxt.popContextNodeList();
transformer.popElemTemplateElement();
xctxt.popCurrentExpressionNode();
xctxt.popCurrentNode();
sourceNodes.detach();
}
}
/**
* Return the first node out of the nodeset, if this expression is a nodeset expression. This is
* the default implementation for nodesets. Derived classes should try and override this and
* return a value without having to do a clone operation.
*
* @param xctxt The XPath runtime context.
* @return the first node out of the nodeset, or DTM.NULL.
*/
public int asNode(XPathContext xctxt) throws javax.xml.transform.TransformerException {
return xctxt.getCurrentNode();
}
/**
* Test the current node to see if it matches the given node test.
*
* @param xctxt XPath runtime context.
* @return {@link org.apache.xpath.patterns.NodeTest#SCORE_NODETEST}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_NONE}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_NSWILD}, {@link
* org.apache.xpath.patterns.NodeTest#SCORE_QNAME}, or {@link
* org.apache.xpath.patterns.NodeTest#SCORE_OTHER}.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
return execute(xctxt, xctxt.getCurrentNode());
}
/**
* Perform a query if needed, and call transformNode for each child.
*
* @param transformer non-null reference to the the current transform-time state.
* @throws TransformerException Thrown in a variety of circumstances.
* @xsl.usage advanced
*/
public void transformSelectedNodes(TransformerImpl transformer) throws TransformerException {
final XPathContext xctxt = transformer.getXPathContext();
final int sourceNode = xctxt.getCurrentNode();
DTMIterator sourceNodes = m_selectExpression.asIterator(xctxt, sourceNode);
try {
final Vector keys =
(m_sortElems == null) ? null : transformer.processSortKeys(this, sourceNode);
// Sort if we need to.
if (null != keys) sourceNodes = sortNodes(xctxt, keys, sourceNodes);
if (transformer.getDebug()) {
// The original code, which is broken for bug#16889,
// which fails to get the original select expression in the select event.
/* transformer.getTraceManager().fireSelectedEvent(
* sourceNode,
* this,
* "select",
* new XPath(m_selectExpression),
* new org.apache.xpath.objects.XNodeSet(sourceNodes));
*/
// The following code fixes bug#16889
// Solution: Store away XPath in setSelect(Xath), and use it here.
// Pass m_xath, which the current node is associated with, onto the TraceManager.
Expression expr = m_xpath.getExpression();
org.apache.xpath.objects.XObject xObject = expr.execute(xctxt);
int current = xctxt.getCurrentNode();
transformer.getTraceManager().fireSelectedEvent(current, this, "select", m_xpath, xObject);
}
xctxt.pushCurrentNode(DTM.NULL);
IntStack currentNodes = xctxt.getCurrentNodeStack();
xctxt.pushCurrentExpressionNode(DTM.NULL);
IntStack currentExpressionNodes = xctxt.getCurrentExpressionNodeStack();
xctxt.pushSAXLocatorNull();
xctxt.pushContextNodeList(sourceNodes);
transformer.pushElemTemplateElement(null);
// pushParams(transformer, xctxt);
// Should be able to get this from the iterator but there must be a bug.
DTM dtm = xctxt.getDTM(sourceNode);
int docID = sourceNode & DTMManager.IDENT_DTM_DEFAULT;
int child;
while (DTM.NULL != (child = sourceNodes.nextNode())) {
currentNodes.setTop(child);
currentExpressionNodes.setTop(child);
if ((child & DTMManager.IDENT_DTM_DEFAULT) != docID) {
dtm = xctxt.getDTM(child);
docID = child & DTMManager.IDENT_DTM_DEFAULT;
}
// final int exNodeType = dtm.getExpandedTypeID(child);
final int nodeType = dtm.getNodeType(child);
// Fire a trace event for the template.
if (transformer.getDebug()) {
transformer.getTraceManager().fireTraceEvent(this);
}
// And execute the child templates.
// Loop through the children of the template, calling execute on
// each of them.
for (ElemTemplateElement t = this.m_firstChild; t != null; t = t.m_nextSibling) {
xctxt.setSAXLocator(t);
transformer.setCurrentElement(t);
t.execute(transformer);
}
if (transformer.getDebug()) {
// We need to make sure an old current element is not
// on the stack. See TransformerImpl#getElementCallstack.
transformer.setCurrentElement(null);
transformer.getTraceManager().fireTraceEndEvent(this);
}
// KLUGE: Implement <?xalan:doc_cache_off?>
// ASSUMPTION: This will be set only when the XPath was indeed
// a call to the Document() function. Calling it in other
// situations is likely to fry Xalan.
//
// %REVIEW% We need a MUCH cleaner solution -- one that will
// handle cleaning up after document() and getDTM() in other
// contexts. The whole SourceTreeManager mechanism should probably
// be moved into DTMManager rather than being explicitly invoked in
// FuncDocument and here.
if (m_doc_cache_off) {
if (DEBUG)
System.out.println(
"JJK***** CACHE RELEASE *****\n" + "\tdtm=" + dtm.getDocumentBaseURI());
// 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, this would require substantial rework.
xctxt.getSourceTreeManager().removeDocumentFromCache(dtm.getDocument());
xctxt.release(dtm, false);
}
}
} finally {
if (transformer.getDebug())
transformer
.getTraceManager()
.fireSelectedEndEvent(
sourceNode,
this,
"select",
new XPath(m_selectExpression),
new org.apache.xpath.objects.XNodeSet(sourceNodes));
xctxt.popSAXLocator();
xctxt.popContextNodeList();
transformer.popElemTemplateElement();
xctxt.popCurrentExpressionNode();
xctxt.popCurrentNode();
sourceNodes.detach();
}
}
/**
* Extension element for piping an XML document through a series of 1 or more transformations.
*
* <pre>Common usage pattern: A stylesheet transforms a listing of documents to be
* transformed into a TOC. For each document in the listing calls the pipeDocument
* extension element to pipe that document through a series of 1 or more stylesheets
* to the desired output document.
*
* Syntax:
* <xsl:stylesheet version="1.0"
* xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
* xmlns:pipe="http://xml.apache.org/xalan/PipeDocument"
* extension-element-prefixes="pipe">
* ...
* <pipe:pipeDocument source="source.xml" target="target.xml">
* <stylesheet href="ss1.xsl">
* <param name="param1" value="value1"/>
* </stylesheet>
* <stylesheet href="ss2.xsl">
* <param name="param1" value="value1"/>
* <param name="param2" value="value2"/>
* </stylesheet>
* <stylesheet href="ss1.xsl"/>
* </pipe:pipeDocument>
*
* Notes:</pre>
*
* <ul>
* <li>The base URI for the source attribute is the XML "listing" document.
* <li/>
* <li>The target attribute is taken as is (base is the current user directory).
* <li/>
* <li>The stylsheet containg the extension element is the base URI for the stylesheet hrefs.
* <li/>
* </ul>
*/
public void pipeDocument(XSLProcessorContext context, ElemExtensionCall elem)
throws TransformerException, TransformerConfigurationException, SAXException, IOException,
FileNotFoundException {
SAXTransformerFactory saxTFactory = (SAXTransformerFactory) TransformerFactory.newInstance();
// XML doc to transform.
String source = elem.getAttribute("source", context.getContextNode(), context.getTransformer());
TransformerImpl transImpl = context.getTransformer();
// Base URI for input doc, so base for relative URI to XML doc to transform.
String baseURLOfSource = transImpl.getBaseURLOfSource();
// Absolute URI for XML doc to transform.
String absSourceURL = SystemIDResolver.getAbsoluteURI(source, baseURLOfSource);
// Transformation target
String target = elem.getAttribute("target", context.getContextNode(), context.getTransformer());
XPathContext xctxt = context.getTransformer().getXPathContext();
int xt = xctxt.getDTMHandleFromNode(context.getContextNode());
// Get System Id for stylesheet; to be used to resolve URIs to other stylesheets.
String sysId = elem.getSystemId();
NodeList ssNodes = null;
NodeList paramNodes = null;
Node ssNode = null;
Node paramNode = null;
if (elem.hasChildNodes()) {
ssNodes = elem.getChildNodes();
// Vector to contain TransformerHandler for each stylesheet.
Vector vTHandler = new Vector(ssNodes.getLength());
// The child nodes of an extension element node are instances of
// ElemLiteralResult, which requires does not fully support the standard
// Node interface. Accordingly, some special handling is required (see below)
// to get attribute values.
for (int i = 0; i < ssNodes.getLength(); i++) {
ssNode = ssNodes.item(i);
if (ssNode.getNodeType() == Node.ELEMENT_NODE
&& ((Element) ssNode).getTagName().equals("stylesheet")
&& ssNode instanceof ElemLiteralResult) {
AVT avt = ((ElemLiteralResult) ssNode).getLiteralResultAttribute("href");
String href = avt.evaluate(xctxt, xt, elem);
String absURI = SystemIDResolver.getAbsoluteURI(href, sysId);
Templates tmpl = saxTFactory.newTemplates(new StreamSource(absURI));
TransformerHandler tHandler = saxTFactory.newTransformerHandler(tmpl);
Transformer trans = tHandler.getTransformer();
// AddTransformerHandler to vector
vTHandler.addElement(tHandler);
paramNodes = ssNode.getChildNodes();
for (int j = 0; j < paramNodes.getLength(); j++) {
paramNode = paramNodes.item(j);
if (paramNode.getNodeType() == Node.ELEMENT_NODE
&& ((Element) paramNode).getTagName().equals("param")
&& paramNode instanceof ElemLiteralResult) {
avt = ((ElemLiteralResult) paramNode).getLiteralResultAttribute("name");
String pName = avt.evaluate(xctxt, xt, elem);
avt = ((ElemLiteralResult) paramNode).getLiteralResultAttribute("value");
String pValue = avt.evaluate(xctxt, xt, elem);
trans.setParameter(pName, pValue);
}
}
}
}
usePipe(vTHandler, absSourceURL, target);
}
}
/**
* Constructor CachedXPathFuncHereAPI
*
* @param existingXPathContext
*/
public CachedXPathFuncHereAPI(XPathContext existingXPathContext) {
this._dtmManager = existingXPathContext.getDTMManager();
this._context = existingXPathContext;
}
/**
* Execute the function. The function must return a valid object.
*
* @param xctxt The current execution context.
* @return A valid XObject.
* @throws javax.xml.transform.TransformerException
*/
public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException {
// TransformerImpl transformer = (TransformerImpl)xctxt;
TransformerImpl transformer = (TransformerImpl) xctxt.getOwnerObject();
XNodeSet nodes = null;
int context = xctxt.getCurrentNode();
DTM dtm = xctxt.getDTM(context);
int docContext = dtm.getDocumentRoot(context);
if (DTM.NULL == docContext) {
// path.error(context, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC); //"context does not
// have an owner document!");
}
String xkeyname = getArg0().execute(xctxt).str();
QName keyname = new QName(xkeyname, xctxt.getNamespaceContext());
XObject arg = getArg1().execute(xctxt);
boolean argIsNodeSetDTM = (XObject.CLASS_NODESET == arg.getType());
KeyManager kmgr = transformer.getKeyManager();
// Don't bother with nodeset logic if the thing is only one node.
if (argIsNodeSetDTM) {
XNodeSet ns = (XNodeSet) arg;
ns.setShouldCacheNodes(true);
int len = ns.getLength();
if (len <= 1) argIsNodeSetDTM = false;
}
if (argIsNodeSetDTM) {
Hashtable usedrefs = null;
DTMIterator ni = arg.iter();
int pos;
UnionPathIterator upi = new UnionPathIterator();
upi.exprSetParent(this);
while (DTM.NULL != (pos = ni.nextNode())) {
dtm = xctxt.getDTM(pos);
XMLString ref = dtm.getStringValue(pos);
if (null == ref) continue;
if (null == usedrefs) usedrefs = new Hashtable();
if (usedrefs.get(ref) != null) {
continue; // We already have 'em.
} else {
// ISTRUE being used as a dummy value.
usedrefs.put(ref, ISTRUE);
}
XNodeSet nl =
kmgr.getNodeSetDTMByKey(xctxt, docContext, keyname, ref, xctxt.getNamespaceContext());
nl.setRoot(xctxt.getCurrentNode(), xctxt);
// try
// {
upi.addIterator(nl);
// }
// catch(CloneNotSupportedException cnse)
// {
// // will never happen.
// }
// mnodeset.addNodesInDocOrder(nl, xctxt); needed??
}
int current = xctxt.getCurrentNode();
upi.setRoot(current, xctxt);
nodes = new XNodeSet(upi);
} else {
XMLString ref = arg.xstr();
nodes = kmgr.getNodeSetDTMByKey(xctxt, docContext, keyname, ref, xctxt.getNamespaceContext());
nodes.setRoot(xctxt.getCurrentNode(), xctxt);
}
return nodes;
}
/**
* Copy a Literal Result Element into the Result tree, copy the non-excluded namespace attributes,
* copy the attributes not of the XSLT namespace, and execute the children of the LRE.
*
* @see <a href="http://www.w3.org/TR/xslt#literal-result-element">literal-result-element in XSLT
* Specification</a>
* @param transformer non-null reference to the the current transform-time state.
* @throws TransformerException
*/
public void execute(TransformerImpl transformer) throws TransformerException {
SerializationHandler rhandler = transformer.getSerializationHandler();
try {
// JJK Bugzilla 3464, test namespace85 -- make sure LRE's
// namespace is asserted even if default, since xsl:element
// may have changed the context.
rhandler.startPrefixMapping(getPrefix(), getNamespace());
// Add namespace declarations.
executeNSDecls(transformer);
rhandler.startElement(getNamespace(), getLocalName(), getRawName());
} catch (SAXException se) {
throw new TransformerException(se);
}
/*
* If we make it to here we have done a successful startElement()
* we will do an endElement() call for balance, no matter what happens
* in the middle.
*/
// tException remembers if we had an exception "in the middle"
TransformerException tException = null;
try {
// Process any possible attributes from xsl:use-attribute-sets first
super.execute(transformer);
// xsl:version, excludeResultPrefixes???
// Process the list of avts next
if (null != m_avts) {
int nAttrs = m_avts.size();
for (int i = (nAttrs - 1); i >= 0; i--) {
AVT avt = (AVT) m_avts.get(i);
XPathContext xctxt = transformer.getXPathContext();
int sourceNode = xctxt.getCurrentNode();
String stringedValue = avt.evaluate(xctxt, sourceNode, this);
if (null != stringedValue) {
// Important Note: I'm not going to check for excluded namespace
// prefixes here. It seems like it's too expensive, and I'm not
// even sure this is right. But I could be wrong, so this needs
// to be tested against other implementations.
rhandler.addAttribute(
avt.getURI(), avt.getName(), avt.getRawName(), "CDATA", stringedValue, false);
}
} // end for
}
// Now process all the elements in this subtree
// TODO: Process m_extensionElementPrefixes && m_attributeSetsNames
transformer.executeChildTemplates(this, true);
} catch (TransformerException te) {
// thrown in finally to prevent original exception consumed by subsequent exceptions
tException = te;
} catch (SAXException se) {
tException = new TransformerException(se);
}
try {
/* we need to do this endElement() to balance the
* successful startElement() call even if
* there was an exception in the middle.
* Otherwise an exception in the middle could cause a system to hang.
*/
rhandler.endElement(getNamespace(), getLocalName(), getRawName());
} catch (SAXException se) {
/* we did call endElement(). If thee was an exception
* in the middle throw that one, otherwise if there
* was an exception from endElement() throw that one.
*/
if (tException != null) throw tException;
else throw new TransformerException(se);
}
/* If an exception was thrown in the middle but not with startElement() or
* or endElement() then its time to let it percolate.
*/
if (tException != null) throw tException;
unexecuteNSDecls(transformer);
// JJK Bugzilla 3464, test namespace85 -- balance explicit start.
try {
rhandler.endPrefixMapping(getPrefix());
} catch (SAXException se) {
throw new TransformerException(se);
}
}