/** Returns the lexical signs indexed by the given rel, or null if none. */
public Collection<Sign> getSignsFromRel(String rel) {
// check cache (if not doing supertagging)
if (_supertagger == null) {
RelLookup lookup = new RelLookup(rel);
RelLookup retLookup = (RelLookup) lookupCache.getInterned(lookup);
if (retLookup != null) return retLookup.signs;
}
// lookup signs via preds
Collection<String> preds = (Collection<String>) _relsToPreds.get(rel);
if (preds == null) return null;
Collection<Sign> retval = getSignsFromRelAndPreds(rel, preds);
// cache non-null result (if not doing supertagging)
if (_supertagger == null && retval != null) {
RelLookup lookup = new RelLookup(rel);
lookup.signs = retval;
lookupCache.intern(lookup);
}
return retval;
}
/**
* Returns the lexical signs indexed by the given pred. If the pred is not listed in the lexicon,
* the tokenizer is consulted to see if it is a special token (date, time, etc.); otherwise, null
* is returned. Coarticulations are applied for the given rels, if non-null.
*/
public Collection<Sign> getSignsFromPred(String pred, List<String> coartRels) {
// check cache (if not doing supertagging)
if (_supertagger == null) {
PredLookup lookup = new PredLookup(pred, coartRels);
PredLookup retLookup = (PredLookup) lookupCache.getInterned(lookup);
if (retLookup != null) return retLookup.signs;
}
// lookup pred
Collection<Sign> result = getSignsFromPredAndTargetRel(pred, null);
if (result == null) return null;
// apply coarts for rels
if (coartRels != null) applyCoarts(coartRels, result);
// cache result (if not doing supertagging)
if (_supertagger == null) {
PredLookup lookup = new PredLookup(pred, coartRels);
lookup.signs = result;
lookupCache.intern(lookup);
}
// and return
return result;
}