public override Query Rewrite(IndexReader reader)
{
// Map to RangeFilter semantics which are slightly different...
RangeFilter rangeFilt = new RangeFilter(fieldName, lowerVal != null ? lowerVal : "", upperVal, (System.Object)lowerVal == (System.Object) "" ? false : includeLower, upperVal == null ? false : includeUpper);
Query q = new ConstantScoreQuery(rangeFilt);
q.SetBoost(GetBoost());
return(q);
}
public virtual void TestBefore()
{
// create an index
RAMDirectory indexStore = new RAMDirectory();
IndexWriter writer = new IndexWriter(indexStore, new SimpleAnalyzer(), true);
long now = (long) (DateTime.UtcNow - new DateTime(1970, 1, 1)).TotalMilliseconds;
Lucene.Net.Documents.Document doc = new Lucene.Net.Documents.Document();
// add time that is in the past
doc.Add(new Field("datefield", Lucene.Net.Documents.DateTools.TimeToString(now - 1000 * 100000, Lucene.Net.Documents.DateTools.Resolution.MILLISECOND), Field.Store.YES, Field.Index.UN_TOKENIZED));
doc.Add(new Field("body", "Today is a very sunny day in New York City", Field.Store.YES, Field.Index.TOKENIZED));
writer.AddDocument(doc);
writer.Optimize();
writer.Close();
IndexSearcher searcher = new IndexSearcher(indexStore);
// filter that should preserve matches
//DateFilter df1 = DateFilter.Before("datefield", now);
RangeFilter df1 = new RangeFilter("datefield", Lucene.Net.Documents.DateTools.TimeToString(now - 2000 * 100000, Lucene.Net.Documents.DateTools.Resolution.MILLISECOND), Lucene.Net.Documents.DateTools.TimeToString(now, Lucene.Net.Documents.DateTools.Resolution.MILLISECOND), false, true);
// filter that should discard matches
//DateFilter df2 = DateFilter.Before("datefield", now - 999999);
RangeFilter df2 = new RangeFilter("datefield", Lucene.Net.Documents.DateTools.TimeToString(0, Lucene.Net.Documents.DateTools.Resolution.MILLISECOND), Lucene.Net.Documents.DateTools.TimeToString(now - 2000 * 100000, Lucene.Net.Documents.DateTools.Resolution.MILLISECOND), true, false);
// search something that doesn't exist with DateFilter
Query query1 = new TermQuery(new Term("body", "NoMatchForThis"));
// search for something that does exists
Query query2 = new TermQuery(new Term("body", "sunny"));
Hits result;
// ensure that queries return expected results without DateFilter first
result = searcher.Search(query1);
Assert.AreEqual(0, result.Length());
result = searcher.Search(query2);
Assert.AreEqual(1, result.Length());
// run queries with DateFilter
result = searcher.Search(query1, df1);
Assert.AreEqual(0, result.Length());
result = searcher.Search(query1, df2);
Assert.AreEqual(0, result.Length());
result = searcher.Search(query2, df1);
Assert.AreEqual(1, result.Length());
result = searcher.Search(query2, df2);
Assert.AreEqual(0, result.Length());
}
public override Query Rewrite(IndexReader reader)
{
// Map to RangeFilter semantics which are slightly different...
RangeFilter rangeFilt = new RangeFilter(fieldName, lowerVal != null ? lowerVal : "", upperVal, (System.Object) lowerVal == (System.Object) ""?false:includeLower, upperVal == null?false:includeUpper);
Query q = new ConstantScoreQuery(rangeFilt);
q.SetBoost(GetBoost());
return q;
}
public void StraightFilters()
{
CreateData();
IFullTextSession s = Search.CreateFullTextSession(OpenSession());
s.Transaction.Begin();
BooleanQuery query = new BooleanQuery();
query.Add(new TermQuery(new Term("teacher", "andre")), BooleanClause.Occur.SHOULD);
query.Add(new TermQuery(new Term("teacher", "max")), BooleanClause.Occur.SHOULD);
query.Add(new TermQuery(new Term("teacher", "aaron")), BooleanClause.Occur.SHOULD);
IFullTextQuery ftQuery = s.CreateFullTextQuery(query, typeof(Driver));
ftQuery.EnableFullTextFilter("bestDriver");
Lucene.Net.Search.Filter dateFilter = new RangeFilter("delivery", "2001", "2005", true, true);
ftQuery.SetFilter(dateFilter);
Assert.AreEqual(1, ftQuery.ResultSize, "Should select only liz");
s.Transaction.Commit();
s.Close();
DeleteData();
}
