|
public Rewrite ( IndexReader reader ) : |
||
| reader | IndexReader | |
| return | ||
public string GetHighlight(string value, IndexSearcher searcher, string highlightField, Query luceneQuery)
{
var scorer = new QueryScorer(luceneQuery.Rewrite(searcher.GetIndexReader()));
var highlighter = new Highlighter(HighlightFormatter, scorer);
var tokenStream = HighlightAnalyzer.TokenStream(highlightField, new StringReader(value));
return highlighter.GetBestFragments(tokenStream, value, MaxNumHighlights, Separator);
}
public override Query Rewrite(IndexReader reader)
{
Query rewritten = @in.Rewrite(reader);
if (rewritten == @in)
{
return(this);
}
else
{
return(Wrap(new Random(Random.Next()), rewritten));
}
}
public override Query Rewrite(IndexReader reader)
{
Query rewritten = @in.Rewrite(reader);
if (rewritten == @in)
{
return(this);
}
else
{
return(Wrap(new J2N.Randomizer(random.NextInt64()), rewritten));
}
}
/// <summary>Rewrites the wrapped query. </summary>
public override Query Rewrite(IndexReader reader)
{
Query rewritten = query.Rewrite(reader);
if (rewritten != query)
{
FilteredQuery clone = (FilteredQuery)this.Clone();
clone.query = rewritten;
return(clone);
}
else
{
return(this);
}
}
/// <summary>Optimize our representation and our subqueries representations</summary>
/// <param name="reader">the IndexReader we query
/// </param>
/// <returns> an optimized copy of us (which may not be a copy if there is nothing to optimize)
/// </returns>
public override Query Rewrite(IndexReader reader)
{
int numDisjunctions = disjuncts.Count;
if (numDisjunctions == 1)
{
Query singleton = (Query)disjuncts[0];
Query result = singleton.Rewrite(reader);
if (GetBoost() != 1.0f)
{
if (result == singleton)
{
result = (Query)result.Clone();
}
result.SetBoost(GetBoost() * result.GetBoost());
}
return(result);
}
DisjunctionMaxQuery clone = null;
for (int i = 0; i < numDisjunctions; i++)
{
Query clause = (Query)disjuncts[i];
Query rewrite = clause.Rewrite(reader);
if (rewrite != clause)
{
if (clone == null)
{
clone = (DisjunctionMaxQuery)this.Clone();
}
clone.disjuncts[i] = rewrite;
}
}
if (clone != null)
{
return(clone);
}
else
{
return(this);
}
}
