public Sequence evalQuery(NodeSet nodes, List terms) throws XPathException {
if (terms == null || terms.size() == 0) return Sequence.EMPTY_SEQUENCE; // no search terms
double threshold = 0.65;
if (getArgumentCount() == 3) {
Sequence thresOpt = getArgument(2).eval(nodes);
// TODO : get rid of getLength()
if (!thresOpt.hasOne())
throw new XPathException(
getASTNode(), "third argument to " + getName() + "should be a single double value");
threshold = ((DoubleValue) thresOpt.convertTo(Type.DOUBLE)).getDouble();
}
NodeSet hits[] = new NodeSet[terms.size()];
String term;
TermMatcher matcher;
for (int k = 0; k < terms.size(); k++) {
term = (String) terms.get(k);
if (term.length() == 0) hits[k] = null;
else {
matcher = new FuzzyMatcher(term, threshold);
hits[k] =
context
.getBroker()
.getTextEngine()
.getNodes(
context,
nodes.getDocumentSet(),
nodes,
NodeSet.ANCESTOR,
null,
matcher,
term.substring(0, 1));
}
}
return mergeResults(hits);
}
public Sequence eval(Sequence contextSequence, Item contextItem) throws XPathException {
if (context.getProfiler().isEnabled()) {
context.getProfiler().start(this);
context
.getProfiler()
.message(
this,
Profiler.DEPENDENCIES,
"DEPENDENCIES",
Dependency.getDependenciesName(this.getDependencies()));
if (contextSequence != null)
context
.getProfiler()
.message(this, Profiler.START_SEQUENCES, "CONTEXT SEQUENCE", contextSequence);
if (contextItem != null)
context
.getProfiler()
.message(this, Profiler.START_SEQUENCES, "CONTEXT ITEM", contextItem.toSequence());
}
if (contextItem != null) contextSequence = contextItem.toSequence();
Sequence result;
Sequence arg = null;
if (getSignature().getArgumentCount() == 1) arg = getArgument(0).eval(contextSequence);
else arg = contextSequence;
if (arg == null) throw new XPathException(getASTNode(), "XPDY0002: Undefined context item");
if (arg.isEmpty()) result = DoubleValue.NaN;
else {
try {
result = arg.convertTo(Type.DOUBLE);
} catch (XPathException e) {
result = DoubleValue.NaN;
}
}
if (context.getProfiler().isEnabled()) context.getProfiler().end(this, "", result);
return result;
}