public virtual Query GetQueryDOA(System.String query, Analyzer a)
{
if (a == null)
{
a = new SimpleAnalyzer();
}
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", a);
qp.SetOperator(QueryParsers.QueryParser.DEFAULT_OPERATOR_AND);
return(qp.Parse(query));
}
public virtual QueryParsers.QueryParser GetParser(Analyzer a)
{
if (a == null)
{
a = new SimpleAnalyzer();
}
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", a);
qp.SetOperator(QueryParsers.QueryParser.DEFAULT_OPERATOR_OR);
return(qp);
}
public virtual void AssertWildcardQueryEquals(System.String query, bool lowercase, System.String result)
{
QueryParsers.QueryParser qp = GetParser(null);
qp.SetLowercaseWildcardTerms(lowercase);
Query q = qp.Parse(query);
System.String s = q.ToString("Field");
if (!s.Equals(result))
{
Assert.Fail("WildcardQuery /" + query + "/ yielded /" + s + "/, expecting /" + result + "/");
}
}
public static void Main(System.String[] args)
{
try
{
Directory directory = new RAMDirectory();
Analyzer analyzer = new SimpleAnalyzer();
IndexWriter writer = new IndexWriter(directory, analyzer, true);
int MAX_DOCS = 225;
for (int j = 0; j < MAX_DOCS; j++)
{
Document d = new Document();
d.Add(Field.Text(PRIORITY_FIELD, HIGH_PRIORITY));
d.Add(Field.Text(ID_FIELD, System.Convert.ToString(j)));
writer.AddDocument(d);
}
writer.Close();
// try a search without OR
Searcher searcher = new IndexSearcher(directory);
Hits hits = null;
QueryParsers.QueryParser parser = new QueryParsers.QueryParser(PRIORITY_FIELD, analyzer);
Query query = parser.Parse(HIGH_PRIORITY);
System.Console.Out.WriteLine("Query: " + query.ToString(PRIORITY_FIELD));
hits = searcher.Search(query);
PrintHits(hits);
searcher.Close();
// try a new search with OR
searcher = new IndexSearcher(directory);
hits = null;
parser = new QueryParsers.QueryParser(PRIORITY_FIELD, analyzer);
query = parser.Parse(HIGH_PRIORITY + " OR " + MED_PRIORITY);
System.Console.Out.WriteLine("Query: " + query.ToString(PRIORITY_FIELD));
hits = searcher.Search(query);
PrintHits(hits);
searcher.Close();
}
catch (System.Exception e)
{
System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
}
}
public static void Main(System.String[] args)
{
try
{
Directory directory = new RAMDirectory();
Analyzer analyzer = new SimpleAnalyzer();
IndexWriter writer = new IndexWriter(directory, analyzer, true);
System.String[] docs = new System.String[] { "a b c d e", "a b c d e a b c d e", "a b c d e f g h i j", "a c e", "e c a", "a c e a c e", "a c e a b c" };
for (int j = 0; j < docs.Length; j++)
{
Document d = new Document();
d.Add(Field.Text("contents", docs[j]));
writer.AddDocument(d);
}
writer.Close();
Searcher searcher = new IndexSearcher(directory);
System.String[] queries = new System.String[] { "\"a c e\"" };
Hits hits = null;
QueryParsers.QueryParser parser = new QueryParsers.QueryParser("contents", analyzer);
parser.SetPhraseSlop(4);
for (int j = 0; j < queries.Length; j++)
{
Query query = parser.Parse(queries[j]);
System.Console.Out.WriteLine("Query: " + query.ToString("contents"));
//DateFilter filter =
// new DateFilter("modified", Time(1997,0,1), Time(1998,0,1));
//DateFilter filter = DateFilter.Before("modified", Time(1997,00,01));
//System.out.println(filter);
hits = searcher.Search(query);
System.Console.Out.WriteLine(hits.Length() + " total results");
for (int i = 0; i < hits.Length() && i < 10; i++)
{
Document d = hits.Doc(i);
System.Console.Out.WriteLine(i + " " + hits.Score(i) + " " + d.Get("contents"));
}
}
searcher.Close();
}
catch (System.Exception e)
{
System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
}
}
private void DoTest(System.IO.StringWriter out_Renamed, bool useCompoundFiles)
{
Directory directory = new RAMDirectory();
Analyzer analyzer = new SimpleAnalyzer();
IndexWriter writer = new IndexWriter(directory, analyzer, true);
writer.SetUseCompoundFile(useCompoundFiles);
int MAX_DOCS = 225;
for (int j = 0; j < MAX_DOCS; j++)
{
Document d = new Document();
d.Add(Field.Text(PRIORITY_FIELD, HIGH_PRIORITY));
d.Add(Field.Text(ID_FIELD, System.Convert.ToString(j)));
writer.AddDocument(d);
}
writer.Close();
// try a search without OR
Searcher searcher = new IndexSearcher(directory);
Hits hits = null;
QueryParsers.QueryParser parser = new QueryParsers.QueryParser(PRIORITY_FIELD, analyzer);
Query query = parser.Parse(HIGH_PRIORITY);
out_Renamed.WriteLine("Query: " + query.ToString(PRIORITY_FIELD));
hits = searcher.Search(query);
PrintHits(out_Renamed, hits);
CheckHits(hits, MAX_DOCS);
searcher.Close();
// try a new search with OR
searcher = new IndexSearcher(directory);
hits = null;
parser = new QueryParsers.QueryParser(PRIORITY_FIELD, analyzer);
query = parser.Parse(HIGH_PRIORITY + " OR " + MED_PRIORITY);
out_Renamed.WriteLine("Query: " + query.ToString(PRIORITY_FIELD));
hits = searcher.Search(query);
PrintHits(out_Renamed, hits);
CheckHits(hits, MAX_DOCS);
searcher.Close();
}
private void DoTestSearch(System.IO.StringWriter out_Renamed, bool useCompoundFile)
{
Directory directory = new RAMDirectory();
Analyzer analyzer = new SimpleAnalyzer();
IndexWriter writer = new IndexWriter(directory, analyzer, true);
writer.SetUseCompoundFile(useCompoundFile);
System.String[] docs = new System.String[] { "a b c d e", "a b c d e a b c d e", "a b c d e f g h i j", "a c e", "e c a", "a c e a c e", "a c e a b c" };
for (int j = 0; j < docs.Length; j++)
{
Document d = new Document();
d.Add(Field.Text("contents", docs[j]));
writer.AddDocument(d);
}
writer.Close();
Searcher searcher = new IndexSearcher(directory);
System.String[] queries = new System.String[] { "a b", "\"a b\"", "\"a b c\"", "a c", "\"a c\"", "\"a c e\"" };
Hits hits = null;
QueryParsers.QueryParser parser = new QueryParsers.QueryParser("contents", analyzer);
parser.SetPhraseSlop(4);
for (int j = 0; j < queries.Length; j++)
{
Query query = parser.Parse(queries[j]);
out_Renamed.WriteLine("Query: " + query.ToString("contents"));
//DateFilter filter =
// new DateFilter("modified", Time(1997,0,1), Time(1998,0,1));
//DateFilter filter = DateFilter.Before("modified", Time(1997,00,01));
//System.out.println(filter);
hits = searcher.Search(query);
out_Renamed.WriteLine(hits.Length() + " total results");
for (int i = 0; i < hits.Length() && i < 10; i++)
{
Document d = hits.Doc(i);
out_Renamed.WriteLine(i + " " + hits.Score(i) + " " + d.Get("contents"));
}
}
searcher.Close();
}
public virtual void TestBoost()
{
StandardAnalyzer oneStopAnalyzer = new StandardAnalyzer(new System.String[] { "on" });
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", oneStopAnalyzer);
Query q = qp.Parse("on^1.0");
Assert.IsNotNull(q);
q = qp.Parse("\"hello\"^2.0");
Assert.IsNotNull(q);
Assert.AreEqual(q.GetBoost(), (float)2.0, (float)0.5);
q = qp.Parse("hello^2.0");
Assert.IsNotNull(q);
Assert.AreEqual(q.GetBoost(), (float)2.0, (float)0.5);
q = qp.Parse("\"on\"^1.0");
Assert.IsNotNull(q);
q = QueryParsers.QueryParser.Parse("the^3", "Field", new StandardAnalyzer());
Assert.IsNotNull(q);
}
public virtual void TestBoost()
{
StandardAnalyzer oneStopAnalyzer = new StandardAnalyzer(new System.String[]{"on"});
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", oneStopAnalyzer);
Query q = qp.Parse("on^1.0");
Assert.IsNotNull(q);
q = qp.Parse("\"hello\"^2.0");
Assert.IsNotNull(q);
Assert.AreEqual(q.GetBoost(), (float) 2.0, (float) 0.5);
q = qp.Parse("hello^2.0");
Assert.IsNotNull(q);
Assert.AreEqual(q.GetBoost(), (float) 2.0, (float) 0.5);
q = qp.Parse("\"on\"^1.0");
Assert.IsNotNull(q);
q = QueryParsers.QueryParser.Parse("the^3", "Field", new StandardAnalyzer());
Assert.IsNotNull(q);
}
public virtual Query GetQueryDOA(System.String query, Analyzer a)
{
if (a == null)
a = new SimpleAnalyzer();
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", a);
qp.SetOperator(QueryParsers.QueryParser.DEFAULT_OPERATOR_AND);
return qp.Parse(query);
}
public virtual QueryParsers.QueryParser GetParser(Analyzer a)
{
if (a == null)
a = new SimpleAnalyzer();
QueryParsers.QueryParser qp = new QueryParsers.QueryParser("Field", a);
qp.SetOperator(QueryParsers.QueryParser.DEFAULT_OPERATOR_OR);
return qp;
}
