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