| public TermPositionsEnum ( Lucene.Net.Index.Term term ) : Lucene.Net.Index.DocsAndPositionsEnum | ||
| term | Lucene.Net.Index.Term | |
| return | Lucene.Net.Index.DocsAndPositionsEnum | |
public virtual void TestDocsAndPositionsEnumStart()
{
Directory dir = NewDirectory();
RandomIndexWriter writer = new RandomIndexWriter(Random(), dir);
Document doc = new Document();
doc.Add(NewTextField("foo", "bar", Field.Store.NO));
writer.AddDocument(doc);
DirectoryReader reader = writer.Reader;
AtomicReader r = GetOnlySegmentReader(reader);
DocsAndPositionsEnum disi = r.TermPositionsEnum(new Term("foo", "bar"));
int docid = disi.DocID();
Assert.AreEqual(-1, docid);
Assert.IsTrue(disi.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
// now reuse and check again
TermsEnum te = r.Terms("foo").Iterator(null);
Assert.IsTrue(te.SeekExact(new BytesRef("bar")));
disi = te.DocsAndPositions(null, disi);
docid = disi.DocID();
Assert.AreEqual(-1, docid);
Assert.IsTrue(disi.NextDoc() != DocIdSetIterator.NO_MORE_DOCS);
writer.Dispose();
r.Dispose();
dir.Dispose();
}
public virtual void TestNegativePositions()
{
DirectoryInfo oldIndexDir = CreateTempDir("negatives");
using (Stream dataFile = this.GetType().Assembly.GetManifestResourceStream(CURRENT_RESOURCE_DIRECTORY + Bogus24IndexName))
{
TestUtil.Unzip(dataFile, oldIndexDir);
}
Directory dir = NewFSDirectory(oldIndexDir);
DirectoryReader ir = DirectoryReader.Open(dir);
IndexSearcher @is = new IndexSearcher(ir);
PhraseQuery pq = new PhraseQuery();
pq.Add(new Term("field3", "more"));
pq.Add(new Term("field3", "text"));
TopDocs td = @is.Search(pq, 10);
Assert.AreEqual(1, td.TotalHits);
AtomicReader wrapper = SlowCompositeReaderWrapper.Wrap(ir);
DocsAndPositionsEnum de = wrapper.TermPositionsEnum(new Term("field3", "broken"));
Debug.Assert(de != null);
Assert.AreEqual(0, de.NextDoc());
Assert.AreEqual(0, de.NextPosition());
ir.Dispose();
TestUtil.CheckIndex(dir);
dir.Dispose();
}
public virtual void TestSimpleSkip()
{
Directory dir = new CountingRAMDirectory(this, new RAMDirectory());
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new PayloadAnalyzer()).SetCodec(TestUtil.AlwaysPostingsFormat(new Lucene41PostingsFormat())).SetMergePolicy(NewLogMergePolicy()));
Term term = new Term("test", "a");
for (int i = 0; i < 5000; i++)
{
Document d1 = new Document();
d1.Add(NewTextField(term.Field(), term.Text(), Field.Store.NO));
writer.AddDocument(d1);
}
writer.Commit();
writer.ForceMerge(1);
writer.Dispose();
AtomicReader reader = GetOnlySegmentReader(DirectoryReader.Open(dir));
for (int i = 0; i < 2; i++)
{
Counter = 0;
DocsAndPositionsEnum tp = reader.TermPositionsEnum(term);
CheckSkipTo(tp, 14, 185); // no skips
CheckSkipTo(tp, 17, 190); // one skip on level 0
CheckSkipTo(tp, 287, 200); // one skip on level 1, two on level 0
// this test would fail if we had only one skip level,
// because than more bytes would be read from the freqStream
CheckSkipTo(tp, 4800, 250); // one skip on level 2
}
}
public virtual void TestMixupDocs()
{
Directory dir = NewDirectory();
IndexWriterConfig iwc = NewIndexWriterConfig(TEST_VERSION_CURRENT, null);
iwc.SetMergePolicy(NewLogMergePolicy());
RandomIndexWriter writer = new RandomIndexWriter(Random(), dir, iwc);
Document doc = new Document();
Field field = new TextField("field", "", Field.Store.NO);
TokenStream ts = new MockTokenizer(new StringReader("here we go"), MockTokenizer.WHITESPACE, true);
Assert.IsFalse(ts.HasAttribute <PayloadAttribute>());
field.TokenStream = ts;
doc.Add(field);
writer.AddDocument(doc);
Token withPayload = new Token("withPayload", 0, 11);
withPayload.Payload = new BytesRef("test");
ts = new CannedTokenStream(withPayload);
Assert.IsTrue(ts.HasAttribute <IPayloadAttribute>());
field.TokenStream = ts;
writer.AddDocument(doc);
ts = new MockTokenizer(new StringReader("another"), MockTokenizer.WHITESPACE, true);
Assert.IsFalse(ts.HasAttribute <PayloadAttribute>());
field.TokenStream = ts;
writer.AddDocument(doc);
DirectoryReader reader = writer.Reader;
AtomicReader sr = SlowCompositeReaderWrapper.Wrap(reader);
DocsAndPositionsEnum de = sr.TermPositionsEnum(new Term("field", "withPayload"));
de.NextDoc();
de.NextPosition();
Assert.AreEqual(new BytesRef("test"), de.Payload);
writer.Dispose();
reader.Dispose();
dir.Dispose();
}