private SpanFilterResult GetCachedResult(IndexReader reader)
{
object coreKey = reader.FieldCacheKey;
object delCoreKey = reader.HasDeletions ? reader.DeletesCacheKey : coreKey;
SpanFilterResult result = cache.Get(reader, coreKey, delCoreKey);
if (result != null)
{
hitCount++;
return(result);
}
missCount++;
result = filter.BitSpans(reader);
cache.Put(coreKey, delCoreKey, result);
return(result);
}
private SpanFilterResult GetCachedResult(IndexReader reader)
{
SpanFilterResult result = null;
if (cache == null)
{
cache = new SupportClass.WeakHashTable();
}
lock (cache.SyncRoot)
{
// check cache
result = (SpanFilterResult)cache[reader];
if (result == null)
{
result = filter.BitSpans(reader);
cache[reader] = result;
}
}
return(result);
}
private SpanFilterResult GetCachedResult(IndexReader reader)
{
SpanFilterResult result = null;
if (cache == null)
{
cache = new System.Collections.Hashtable();
}
lock (cache.SyncRoot)
{
// check cache
result = (SpanFilterResult)cache[reader];
if (result == null)
{
result = filter.BitSpans(reader);
cache[reader] = result;
}
}
return(result);
}
public virtual void TestFilterWorks()
{
Directory dir = new RAMDirectory();
IndexWriter writer = new IndexWriter(dir, new SimpleAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED, null);
for (int i = 0; i < 500; i++)
{
Document document = new Document();
document.Add(new Field("field", English.IntToEnglish(i) + " equals " + English.IntToEnglish(i), Field.Store.NO, Field.Index.ANALYZED));
writer.AddDocument(document, null);
}
writer.Close();
IndexReader reader = IndexReader.Open(dir, true, null);
SpanTermQuery query = new SpanTermQuery(new Term("field", English.IntToEnglish(10).Trim()));
SpanQueryFilter filter = new SpanQueryFilter(query);
SpanFilterResult result = filter.BitSpans(reader, null);
DocIdSet docIdSet = result.DocIdSet;
Assert.IsTrue(docIdSet != null, "docIdSet is null and it shouldn't be");
AssertContainsDocId("docIdSet doesn't contain docId 10", docIdSet, 10);
var spans = result.Positions;
Assert.IsTrue(spans != null, "spans is null and it shouldn't be");
int size = GetDocIdSetSize(docIdSet);
Assert.IsTrue(spans.Count == size, "spans Size: " + spans.Count + " is not: " + size);
for (System.Collections.IEnumerator iterator = spans.GetEnumerator(); iterator.MoveNext();)
{
SpanFilterResult.PositionInfo info = (SpanFilterResult.PositionInfo)iterator.Current;
Assert.IsTrue(info != null, "info is null and it shouldn't be");
//The doc should indicate the bit is on
AssertContainsDocId("docIdSet doesn't contain docId " + info.Doc, docIdSet, info.Doc);
//There should be two positions in each
Assert.IsTrue(info.Positions.Count == 2, "info.getPositions() Size: " + info.Positions.Count + " is not: " + 2);
}
reader.Close();
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
SpanFilterResult result = BitSpans(reader);
return(result.GetDocIdSet());
}
public override DocIdSet GetDocIdSet(IndexReader reader, IState state)
{
SpanFilterResult result = BitSpans(reader, state);
return(result.DocIdSet);
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
SpanFilterResult result = GetCachedResult(reader);
return(result != null?result.DocIdSet:null);
}
public override System.Collections.BitArray Bits(IndexReader reader)
{
SpanFilterResult result = BitSpans(reader);
return(result.GetBits());
}
public override System.Collections.BitArray Bits(IndexReader reader)
{
SpanFilterResult result = GetCachedResult(reader);
return(result != null?result.GetBits() : null);
}