Lucene.Net.Search.TestPhraseQuery.TestPhraseQueryInConjunctionScorer C# (CSharp) Method

		public virtual void  TestPhraseQueryInConjunctionScorer()
		{
			RAMDirectory directory = new RAMDirectory();
			IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			
			Document doc = new Document();
			doc.Add(new Field("source", "marketing info", Field.Store.YES, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			
			doc = new Document();
			doc.Add(new Field("contents", "foobar", Field.Store.YES, Field.Index.ANALYZED));
			doc.Add(new Field("source", "marketing info", Field.Store.YES, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			
			writer.Optimize();
			writer.Close();

		    IndexSearcher searcher = new IndexSearcher(directory, true);
			
			PhraseQuery phraseQuery = new PhraseQuery();
			phraseQuery.Add(new Term("source", "marketing"));
			phraseQuery.Add(new Term("source", "info"));
			ScoreDoc[] hits = searcher.Search(phraseQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(2, hits.Length);
			QueryUtils.Check(phraseQuery, searcher);
			
			
			TermQuery termQuery = new TermQuery(new Term("contents", "foobar"));
			BooleanQuery booleanQuery = new BooleanQuery();
			booleanQuery.Add(termQuery, Occur.MUST);
			booleanQuery.Add(phraseQuery, Occur.MUST);
			hits = searcher.Search(booleanQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(1, hits.Length);
			QueryUtils.Check(termQuery, searcher);
			
			
			searcher.Close();
			
			writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			doc = new Document();
			doc.Add(new Field("contents", "map entry woo", Field.Store.YES, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			
			doc = new Document();
			doc.Add(new Field("contents", "woo map entry", Field.Store.YES, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			
			doc = new Document();
			doc.Add(new Field("contents", "map foobarword entry woo", Field.Store.YES, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			
			writer.Optimize();
			writer.Close();

		    searcher = new IndexSearcher(directory, true);
			
			termQuery = new TermQuery(new Term("contents", "woo"));
			phraseQuery = new PhraseQuery();
			phraseQuery.Add(new Term("contents", "map"));
			phraseQuery.Add(new Term("contents", "entry"));
			
			hits = searcher.Search(termQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(3, hits.Length);
			hits = searcher.Search(phraseQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(2, hits.Length);
			
			
			booleanQuery = new BooleanQuery();
			booleanQuery.Add(termQuery, Occur.MUST);
			booleanQuery.Add(phraseQuery, Occur.MUST);
			hits = searcher.Search(booleanQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(2, hits.Length);
			
			booleanQuery = new BooleanQuery();
			booleanQuery.Add(phraseQuery, Occur.MUST);
			booleanQuery.Add(termQuery, Occur.MUST);
			hits = searcher.Search(booleanQuery, null, 1000).ScoreDocs;
			Assert.AreEqual(2, hits.Length);
			QueryUtils.Check(booleanQuery, searcher);
			
			
			searcher.Close();
			directory.Close();
		}