public override DocIdSet GetDocIdSet(AtomicReaderContext context, Bits acceptDocs)
{
AtomicReader reader = context.AtomicReader;
FixedBitSet result = null; // lazy init if needed - no need to create a big bitset ahead of time
Fields fields = reader.Fields;
BytesRef spare = new BytesRef(this.termsBytes);
if (fields == null)
{
return(result);
}
Terms terms = null;
TermsEnum termsEnum = null;
DocsEnum docs = null;
foreach (TermsAndField termsAndField in this.termsAndFields)
{
if ((terms = fields.Terms(termsAndField.field)) != null)
{
termsEnum = terms.iterator(termsEnum); // this won't return null
for (int i = termsAndField.start; i < termsAndField.end; i++)
{
spare.offset = offsets[i];
spare.length = offsets[i + 1] - offsets[i];
if (termsEnum.seekExact(spare))
{
docs = termsEnum.docs(acceptDocs, docs, DocsEnum.FLAG_NONE); // no freq since we don't need them
if (result == null)
{
if (docs.nextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
result = new FixedBitSet(reader.maxDoc());
// lazy init but don't do it in the hot loop since we could read many docs
result.set(docs.docID());
}
}
while (docs.nextDoc() != DocIdSetIterator.NO_MORE_DOCS)
{
result.set(docs.docID());
}
}
}
}
}
return(result);
}
/// <summary>
/// tests reuse with Pulsing1(Pulsing2(Standard)) </summary>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public void testNestedPulsing() throws Exception
public virtual void testNestedPulsing()
{
// we always run this test with pulsing codec.
Codec cp = TestUtil.alwaysPostingsFormat(new NestedPulsingPostingsFormat());
BaseDirectoryWrapper dir = newDirectory();
RandomIndexWriter iw = new RandomIndexWriter(random(), dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setCodec(cp));
Document doc = new Document();
doc.add(new TextField("foo", "a b b c c c d e f g g g h i i j j k l l m m m", Field.Store.NO));
// note: the reuse is imperfect, here we would have 4 enums (lost reuse when we get an enum for 'm')
// this is because we only track the 'last' enum we reused (not all).
// but this seems 'good enough' for now.
iw.addDocument(doc);
DirectoryReader ir = iw.Reader;
iw.close();
AtomicReader segment = getOnlySegmentReader(ir);
DocsEnum reuse = null;
IDictionary <DocsEnum, bool?> allEnums = new IdentityHashMap <DocsEnum, bool?>();
TermsEnum te = segment.terms("foo").iterator(null);
while (te.next() != null)
{
reuse = te.docs(null, reuse, DocsEnum.FLAG_NONE);
allEnums[reuse] = true;
}
assertEquals(4, allEnums.Count);
allEnums.Clear();
DocsAndPositionsEnum posReuse = null;
te = segment.terms("foo").iterator(null);
while (te.next() != null)
{
posReuse = te.docsAndPositions(null, posReuse);
allEnums[posReuse] = true;
}
assertEquals(4, allEnums.Count);
ir.close();
dir.close();
}
// TODO: this is a basic test. this thing is complicated, add more
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public void testSophisticatedReuse() throws Exception
public virtual void testSophisticatedReuse()
{
// we always run this test with pulsing codec.
Codec cp = TestUtil.alwaysPostingsFormat(new Pulsing41PostingsFormat(1));
Directory dir = newDirectory();
RandomIndexWriter iw = new RandomIndexWriter(random(), dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())).setCodec(cp));
Document doc = new Document();
doc.add(new TextField("foo", "a b b c c c d e f g g h i i j j k", Field.Store.NO));
iw.addDocument(doc);
DirectoryReader ir = iw.Reader;
iw.close();
AtomicReader segment = getOnlySegmentReader(ir);
DocsEnum reuse = null;
IDictionary <DocsEnum, bool?> allEnums = new IdentityHashMap <DocsEnum, bool?>();
TermsEnum te = segment.terms("foo").iterator(null);
while (te.next() != null)
{
reuse = te.docs(null, reuse, DocsEnum.FLAG_NONE);
allEnums[reuse] = true;
}
assertEquals(2, allEnums.Count);
allEnums.Clear();
DocsAndPositionsEnum posReuse = null;
te = segment.terms("foo").iterator(null);
while (te.next() != null)
{
posReuse = te.docsAndPositions(null, posReuse);
allEnums[posReuse] = true;
}
assertEquals(2, allEnums.Count);
ir.close();
dir.close();
}