/// <summary>
/// Creates a <see cref="TermContext"/> from a top-level <see cref="IndexReaderContext"/> and the
/// given <see cref="Term"/>. this method will lookup the given term in all context's leaf readers
/// and register each of the readers containing the term in the returned <see cref="TermContext"/>
/// using the leaf reader's ordinal.
/// <para/>
/// Note: the given context must be a top-level context.
/// </summary>
public static TermContext Build(IndexReaderContext context, Term term)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(context != null && context.IsTopLevel);
}
string field = term.Field;
BytesRef bytes = term.Bytes;
TermContext perReaderTermState = new TermContext(context);
//if (DEBUG) System.out.println("prts.build term=" + term);
foreach (AtomicReaderContext ctx in context.Leaves)
{
//if (DEBUG) System.out.println(" r=" + leaves[i].reader);
Fields fields = ctx.AtomicReader.Fields;
if (fields != null)
{
Terms terms = fields.GetTerms(field);
if (terms != null)
{
TermsEnum termsEnum = terms.GetEnumerator();
if (termsEnum.SeekExact(bytes))
{
TermState termState = termsEnum.GetTermState();
//if (DEBUG) System.out.println(" found");
perReaderTermState.Register(termState, ctx.Ord, termsEnum.DocFreq, termsEnum.TotalTermFreq);
}
}
}
}
return(perReaderTermState);
}
/// <summary>
/// Returns the filtered enums term state
/// </summary>
public override TermState GetTermState()
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(tenum != null);
}
return(tenum.GetTermState());
}
/// <summary>
/// Returns the filtered enums term state
/// </summary>
public override TermState GetTermState()
{
Debug.Assert(tenum != null);
return(tenum.GetTermState());
}