// returns true if multigroup
private boolean openDocumentIndex(int docID) throws Exception {
// The data is only the data for this document id. Thus the base is set
// to zero.
_data = _env.getPositions(docID);
_base = 0;
_startingIndex = 0;
int kk = _data[_base] & 0xFF, k2;
switch (kk >> 6) // get type
{
case 0: // single group, no extents
k2 = _data[_base + 1];
_firstGenerator.init(_data, _base += 2, k2);
// decode concept table
_nConcepts = _firstGenerator.decodeConcepts(kk & 0x3F, 0, _concepts);
return false;
case 2: // multi group, no extents
_kTable.clear();
_offsets.clear();
_maxConcepts.clear();
ByteArrayDecompressor compr = new ByteArrayDecompressor(_data, _base + 1);
compr.decode(kk & 0x3F, _kTable);
compr.ascDecode(_kTable.popLast(), _offsets);
compr.ascDecode(_kTable.popLast(), _maxConcepts);
_base += 1 + compr.bytesRead();
_limit = _maxConcepts.cardinality();
return true;
case 1: // single group, extents
case 3: // multi group, extents
throw new Exception("extents not yet implemented\n");
}
return false;
}
public void addTerm(int col, int concept, double score, int query) {
if (_env.occursInText(concept)) {
if (_free2 == _size2) {
ConceptData[] newArray = new ConceptData[_size2 *= 2];
System.arraycopy(_conceptData, 0, newArray, 0, _free2);
_conceptData = newArray;
}
_conceptData[_free2++] =
new ConceptData(concept, col, score, query, _query[query].getNColumns());
}
}
public void startSearch(SearchQuery searchQuery) {
// fprintf(stderr, "startSearch: setup\n");
int i, j;
// set up ConceptData lists
// order search terms
quicksort(0, _free2 - 1);
// remove duplicates
for (i = 0; i < _free2 - 1; i = j)
for (j = i + 1; j < _free2; j++)
if (_conceptData[i].crqEquals(_conceptData[j])) _conceptData[j] = null;
else i = j;
// create lists
for (i = 0; i < _free2 - 1; i = j)
for (j = i + 1; j < _free2; j++)
if (_conceptData[j] != null)
if (_conceptData[i].cEquals(_conceptData[j])) {
_conceptData[i].addLast(_conceptData[j]);
_conceptData[j] = null;
} else i = j;
// densify
for (i = 0; i < _free2 - 1; i++)
if (_conceptData[i] == null)
for (j = i + 1; j < _free2; j++)
if (_conceptData[j] != null) {
_conceptData[i] = _conceptData[j];
_conceptData[j] = null;
break;
}
// set up new document generators
_nextDocGenHeap.reset();
for (i = 0; i < _free2 && _conceptData[i] != null; i++) {
NextDocGenerator gen = new NextDocGenerator(_conceptData[i], _env);
try {
gen.first();
if (gen.getDocument() != NonnegativeIntegerGenerator.END) {
_conceptData[i].setConceptLength(_env.getConceptLength(_conceptData[i].getConcept()));
_nextDocGenHeap.addGenerator(gen);
}
} catch (Exception e) {
e.printStackTrace();
}
}
_nextDocGenHeap.start();
searchDocument();
if (searchQuery == null) {
printResults(_maxHitsToShow);
} else {
_query[0].makeEvent(_maxHitsToShow, searchQuery);
}
}