/**
* 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;
}
}
/**
* 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 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;
}
/**
* 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);
}
