C# Lucene.Net.Index.IndexWriter.Close方法代码示例

		public override void  SetUp()
		{
			base.SetUp();
			RAMDirectory directory = new RAMDirectory();
			IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			long theLong = System.Int64.MaxValue;
			double theDouble = System.Double.MaxValue;
			sbyte theByte = (sbyte) System.SByte.MaxValue;
			short theShort = System.Int16.MaxValue;
			int theInt = System.Int32.MaxValue;
			float theFloat = System.Single.MaxValue;
			for (int i = 0; i < NUM_DOCS; i++)
			{
				Document doc = new Document();
				doc.Add(new Field("theLong", System.Convert.ToString(theLong--), Field.Store.NO, Field.Index.NOT_ANALYZED));
				doc.Add(new Field("theDouble", (theDouble--).ToString("E16"), Field.Store.NO, Field.Index.NOT_ANALYZED));
				doc.Add(new Field("theByte", System.Convert.ToString((sbyte) theByte--), Field.Store.NO, Field.Index.NOT_ANALYZED));
				doc.Add(new Field("theShort", System.Convert.ToString(theShort--), Field.Store.NO, Field.Index.NOT_ANALYZED));
				doc.Add(new Field("theInt", System.Convert.ToString(theInt--), Field.Store.NO, Field.Index.NOT_ANALYZED));
				doc.Add(new Field("theFloat", (theFloat--).ToString("E8"), Field.Store.NO, Field.Index.NOT_ANALYZED));
				writer.AddDocument(doc);
			}
			writer.Close();
			reader = IndexReader.Open(directory);
		}

		public virtual void  TestDemo_Renamed_Method()
		{
			
			Analyzer analyzer = new StandardAnalyzer();
			
			// Store the index in memory:
			Directory directory = new RAMDirectory();
			// To store an index on disk, use this instead (note that the 
			// parameter true will overwrite the index in that directory
			// if one exists):
			//Directory directory = FSDirectory.getDirectory("/tmp/testindex", true);
			IndexWriter iwriter = new IndexWriter(directory, analyzer, true);
			iwriter.SetMaxFieldLength(25000);
			Document doc = new Document();
			System.String text = "This is the text to be indexed.";
			doc.Add(new Field("fieldname", text, Field.Store.YES, Field.Index.TOKENIZED));
			iwriter.AddDocument(doc);
			iwriter.Close();
			
			// Now search the index:
			IndexSearcher isearcher = new IndexSearcher(directory);
			// Parse a simple query that searches for "text":
			Lucene.Net.QueryParsers.QueryParser parser = new Lucene.Net.QueryParsers.QueryParser("fieldname", analyzer);
			Query query = parser.Parse("text");
			Hits hits = isearcher.Search(query);
			Assert.AreEqual(1, hits.Length());
			// Iterate through the results:
			for (int i = 0; i < hits.Length(); i++)
			{
				Document hitDoc = hits.Doc(i);
				Assert.AreEqual("This is the text to be indexed.", hitDoc.Get("fieldname"));
			}
			isearcher.Close();
			directory.Close();
		}

		public virtual void  TestCustomLockFactory()
		{
			Directory dir = new RAMDirectory();
			MockLockFactory lf = new MockLockFactory(this);
			dir.SetLockFactory(lf);
			
			// Lock prefix should have been set:
			Assert.IsTrue(lf.lockPrefixSet, "lock prefix was not set by the RAMDirectory");
			
			IndexWriter writer = new IndexWriter(dir, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			
			// add 100 documents (so that commit lock is used)
			for (int i = 0; i < 100; i++)
			{
				AddDoc(writer);
			}
			
			// Both write lock and commit lock should have been created:
			Assert.AreEqual(1, lf.locksCreated.Count, "# of unique locks created (after instantiating IndexWriter)");
			Assert.IsTrue(lf.makeLockCount >= 1, "# calls to makeLock is 0 (after instantiating IndexWriter)");
			
			for (System.Collections.IEnumerator e = lf.locksCreated.Keys.GetEnumerator(); e.MoveNext(); )
			{
				System.String lockName = (System.String) e.Current;
				MockLockFactory.MockLock lock_Renamed = (MockLockFactory.MockLock) lf.locksCreated[lockName];
				Assert.IsTrue(lock_Renamed.lockAttempts > 0, "# calls to Lock.obtain is 0 (after instantiating IndexWriter)");
			}
			
			writer.Close();
		}

        public void SearchFiltered(IndexWriter writer, Directory directory, Filter filter, bool optimize)
        {
            try
            {
                for (int i = 0; i < 60; i++)
                {//Simple docs
                    Document doc = new Document();
                    doc.Add(new Field(FIELD, i.ToString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
                    writer.AddDocument(doc);
                }
                if (optimize)
                    writer.Optimize();
                writer.Close();

                BooleanQuery booleanQuery = new BooleanQuery();
                booleanQuery.Add(new TermQuery(new Term(FIELD, "36")), Occur.SHOULD);


                IndexSearcher indexSearcher = new IndexSearcher(directory);
                ScoreDoc[] hits = indexSearcher.Search(booleanQuery, filter, 1000).ScoreDocs;
                Assert.AreEqual(1, hits.Length, "Number of matched documents");

            }
            catch (System.IO.IOException e)
            {
                Assert.Fail(e.Message);
            }

        }

        void Index()
        {
            Lucene.Net.Index.IndexWriter wr = new Lucene.Net.Index.IndexWriter(dir, new Lucene.Net.Analysis.WhitespaceAnalyzer(), Lucene.Net.Index.IndexWriter.MaxFieldLength.UNLIMITED);

            Lucene.Net.Documents.Document doc = null;
            Lucene.Net.Documents.Field f = null;

            doc = new Lucene.Net.Documents.Document();
            f = new Lucene.Net.Documents.Field("field", "a b c d", Lucene.Net.Documents.Field.Store.NO, Lucene.Net.Documents.Field.Index.ANALYZED);
            doc.Add(f);
            wr.AddDocument(doc);

            doc = new Lucene.Net.Documents.Document();
            f = new Lucene.Net.Documents.Field("field", "a b a d", Lucene.Net.Documents.Field.Store.NO, Lucene.Net.Documents.Field.Index.ANALYZED);
            doc.Add(f);
            wr.AddDocument(doc);

            doc = new Lucene.Net.Documents.Document();
            f = new Lucene.Net.Documents.Field("field", "a b e f", Lucene.Net.Documents.Field.Store.NO, Lucene.Net.Documents.Field.Index.ANALYZED);
            doc.Add(f);
            wr.AddDocument(doc);
            
            doc = new Lucene.Net.Documents.Document();
            f = new Lucene.Net.Documents.Field("field", "x y z", Lucene.Net.Documents.Field.Store.NO, Lucene.Net.Documents.Field.Index.ANALYZED);
            doc.Add(f);
            wr.AddDocument(doc);
            
            wr.Close();
        }

        public static void Main(System.String[] args)
        {
            System.DateTime start = System.DateTime.Now;
            try
            {
                var writer = new Lucene.Net.Index.IndexWriter(Lucene.Net.Store.FSDirectory.Open(INDEX_DIR),
                    new Lucene.Net.Analysis.Standard.StandardAnalyzer(Lucene.Net.Util.Version.LUCENE_CURRENT),
                    true,
                    Lucene.Net.Index.IndexWriter.MaxFieldLength.LIMITED);
                System.Console.Out.WriteLine("Indexing to directory '" + INDEX_DIR + "'...");

                // want to clean up if indexing gets "cancelled"
                try {
                    parse_email_messages(writer);
                }
                catch (Exception e)
                {
                    System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
                }

                System.Console.Out.WriteLine(System.DateTime.Now.Millisecond - start.Millisecond + "ms inserting docs");
                System.Console.Out.WriteLine("Optimizing...");

                writer.Optimize();
                writer.Close();

                System.Console.Out.WriteLine(System.DateTime.Now.Millisecond - start.Millisecond + "ms total");
            }
            catch (System.IO.IOException e)
            {
                System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
            }
        }

		public virtual void  CreateRandomTerms(int nDocs, int nTerms, double power, Directory dir)
		{
			int[] freq = new int[nTerms];
			for (int i = 0; i < nTerms; i++)
			{
				int f = (nTerms + 1) - i; // make first terms less frequent
				freq[i] = (int) System.Math.Ceiling(System.Math.Pow(f, power));
				terms[i] = new Term("f", System.Convert.ToString((char) ('A' + i)));
			}
			
			IndexWriter iw = new IndexWriter(dir, new WhitespaceAnalyzer(), true);
			for (int i = 0; i < nDocs; i++)
			{
				Document d = new Document();
				for (int j = 0; j < nTerms; j++)
				{
					if (r.Next(freq[j]) == 0)
					{
						d.Add(new Field("f", terms[j].Text(), Field.Store.NO, Field.Index.UN_TOKENIZED));
						//System.out.println(d);
					}
				}
				iw.AddDocument(d);
			}
			iw.Optimize();
			iw.Close();
		}

		public virtual void  TestCachingWorks()
		{
			Directory dir = new RAMDirectory();
			IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			writer.Close();
			
			IndexReader reader = IndexReader.Open(dir);
			
			MockFilter filter = new MockFilter();
			CachingWrapperFilter cacher = new CachingWrapperFilter(filter);
			
			// first time, nested filter is called
			cacher.GetDocIdSet(reader);
			Assert.IsTrue(filter.WasCalled(), "first time");
			
			// make sure no exception if cache is holding the wrong bitset
			cacher.Bits(reader);
			cacher.GetDocIdSet(reader);
			
			// second time, nested filter should not be called
			filter.Clear();
			cacher.GetDocIdSet(reader);
			Assert.IsFalse(filter.WasCalled(), "second time");
			
			reader.Close();
		}

		public override void  SetUp()
		{
			base.SetUp();
			
			IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			
			for (int i = 0; i < 5137; ++i)
			{
				Document doc = new Document();
				doc.Add(new Field(FIELD, "meaninglessnames", Field.Store.YES, Field.Index.NOT_ANALYZED));
				writer.AddDocument(doc);
			}
			{
				Document doc = new Document();
				doc.Add(new Field(FIELD, "tangfulin", Field.Store.YES, Field.Index.NOT_ANALYZED));
				writer.AddDocument(doc);
			}
			
			for (int i = 5138; i < 11377; ++i)
			{
				Document doc = new Document();
				doc.Add(new Field(FIELD, "meaninglessnames", Field.Store.YES, Field.Index.NOT_ANALYZED));
				writer.AddDocument(doc);
			}
			{
				Document doc = new Document();
				doc.Add(new Field(FIELD, "tangfulin", Field.Store.YES, Field.Index.NOT_ANALYZED));
				writer.AddDocument(doc);
			}
			
			writer.Close();
		}

		public virtual void  TestDemo_Renamed()
		{
			
			Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);
			
			// Store the index in memory:
			Directory directory = new RAMDirectory();
			// To store an index on disk, use this instead:
			//Directory directory = FSDirectory.open("/tmp/testindex");
			IndexWriter iwriter = new IndexWriter(directory, analyzer, true, new IndexWriter.MaxFieldLength(25000));
			Document doc = new Document();
			System.String text = "This is the text to be indexed.";
			doc.Add(new Field("fieldname", text, Field.Store.YES, Field.Index.ANALYZED));
			iwriter.AddDocument(doc);
			iwriter.Close();
			
			// Now search the index:
			IndexSearcher isearcher = new IndexSearcher(directory, true); // read-only=true
			// Parse a simple query that searches for "text":
			QueryParser parser = new QueryParser("fieldname", analyzer);
			Query query = parser.Parse("text");
			ScoreDoc[] hits = isearcher.Search(query, null, 1000).scoreDocs;
			Assert.AreEqual(1, hits.Length);
			// Iterate through the results:
			for (int i = 0; i < hits.Length; i++)
			{
				Document hitDoc = isearcher.Doc(hits[i].doc);
				Assert.AreEqual(hitDoc.Get("fieldname"), "This is the text to be indexed.");
			}
			isearcher.Close();
			directory.Close();
		}

		public virtual void  TestQuery()
		{
			RAMDirectory dir = new RAMDirectory();
			IndexWriter iw = new IndexWriter(dir, new StandardAnalyzer(), true);
			AddDoc("one", iw);
			AddDoc("two", iw);
			AddDoc("three four", iw);
			iw.Close();
			
			IndexSearcher is_Renamed = new IndexSearcher(dir);
			Hits hits = is_Renamed.Search(new MatchAllDocsQuery());
			Assert.AreEqual(3, hits.Length());
			
			// some artificial queries to trigger the use of skipTo():
			
			BooleanQuery bq = new BooleanQuery();
			bq.Add(new MatchAllDocsQuery(), BooleanClause.Occur.MUST);
			bq.Add(new MatchAllDocsQuery(), BooleanClause.Occur.MUST);
			hits = is_Renamed.Search(bq);
			Assert.AreEqual(3, hits.Length());
			
			bq = new BooleanQuery();
			bq.Add(new MatchAllDocsQuery(), BooleanClause.Occur.MUST);
			bq.Add(new TermQuery(new Term("key", "three")), BooleanClause.Occur.MUST);
			hits = is_Renamed.Search(bq);
			Assert.AreEqual(1, hits.Length());
			
			// delete a document:
			is_Renamed.GetIndexReader().DeleteDocument(0);
			hits = is_Renamed.Search(new MatchAllDocsQuery());
			Assert.AreEqual(2, hits.Length());
			
			is_Renamed.Close();
		}

		public virtual void  TestMethod()
		{
			RAMDirectory directory = new RAMDirectory();
			
			System.String[] values = new System.String[]{"1", "2", "3", "4"};
			
			try
			{
				IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(), true);
				for (int i = 0; i < values.Length; i++)
				{
					Lucene.Net.Documents.Document doc = new Lucene.Net.Documents.Document();
					doc.Add(new Field(FIELD, values[i], Field.Store.YES, Field.Index.UN_TOKENIZED));
					writer.AddDocument(doc);
				}
				writer.Close();
				
				BooleanQuery booleanQuery1 = new BooleanQuery();
				booleanQuery1.Add(new TermQuery(new Term(FIELD, "1")), BooleanClause.Occur.SHOULD);
				booleanQuery1.Add(new TermQuery(new Term(FIELD, "2")), BooleanClause.Occur.SHOULD);
				
				BooleanQuery query = new BooleanQuery();
				query.Add(booleanQuery1, BooleanClause.Occur.MUST);
				query.Add(new TermQuery(new Term(FIELD, "9")), BooleanClause.Occur.MUST_NOT);
				
				IndexSearcher indexSearcher = new IndexSearcher(directory);
				Hits hits = indexSearcher.Search(query);
				Assert.AreEqual(2, hits.Length(), "Number of matched documents");
			}
			catch (System.IO.IOException e)
			{
				Assert.Fail(e.Message);
			}
		}

		public virtual void  TestFilterWorks()
		{
			Directory dir = new RAMDirectory();
			IndexWriter writer = new IndexWriter(dir, new SimpleAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			for (int i = 0; i < 500; i++)
			{
				Document document = new Document();
				document.Add(new Field("field", English.IntToEnglish(i) + " equals " + English.IntToEnglish(i), Field.Store.NO, Field.Index.ANALYZED));
				writer.AddDocument(document);
			}
			writer.Close();
			
			IndexReader reader = IndexReader.Open(dir, true);
			
			SpanTermQuery query = new SpanTermQuery(new Term("field", English.IntToEnglish(10).Trim()));
			SpanQueryFilter filter = new SpanQueryFilter(query);
			SpanFilterResult result = filter.BitSpans(reader);
			DocIdSet docIdSet = result.DocIdSet;
			Assert.IsTrue(docIdSet != null, "docIdSet is null and it shouldn't be");
			AssertContainsDocId("docIdSet doesn't contain docId 10", docIdSet, 10);
			var spans = result.Positions;
			Assert.IsTrue(spans != null, "spans is null and it shouldn't be");
			int size = GetDocIdSetSize(docIdSet);
			Assert.IsTrue(spans.Count == size, "spans Size: " + spans.Count + " is not: " + size);
			for (System.Collections.IEnumerator iterator = spans.GetEnumerator(); iterator.MoveNext(); )
			{
				SpanFilterResult.PositionInfo info = (SpanFilterResult.PositionInfo) iterator.Current;
				Assert.IsTrue(info != null, "info is null and it shouldn't be");
				//The doc should indicate the bit is on
				AssertContainsDocId("docIdSet doesn't contain docId " + info.Doc, docIdSet, info.Doc);
				//There should be two positions in each
				Assert.IsTrue(info.Positions.Count == 2, "info.getPositions() Size: " + info.Positions.Count + " is not: " + 2);
			}
			reader.Close();
		}

		public virtual void  TestBasic()
		{
			Directory dir = new RAMDirectory();
			IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(), true, IndexWriter.MaxFieldLength.LIMITED);
			Document doc = new Document();
			doc.Add(new Field("field", "value", Field.Store.NO, Field.Index.ANALYZED));
			writer.AddDocument(doc);
			writer.Close();
			
			TermQuery termQuery = new TermQuery(new Term("field", "value"));
			
			// should not throw exception with primitive query
			QueryWrapperFilter qwf = new QueryWrapperFilter(termQuery);
			
			IndexSearcher searcher = new IndexSearcher(dir, true);
			TopDocs hits = searcher.Search(new MatchAllDocsQuery(), qwf, 10);
			Assert.AreEqual(1, hits.totalHits);
			
			// should not throw exception with complex primitive query
			BooleanQuery booleanQuery = new BooleanQuery();
			booleanQuery.Add(termQuery, Occur.MUST);
			booleanQuery.Add(new TermQuery(new Term("field", "missing")), Occur.MUST_NOT);
			qwf = new QueryWrapperFilter(termQuery);
			
			hits = searcher.Search(new MatchAllDocsQuery(), qwf, 10);
			Assert.AreEqual(1, hits.totalHits);
			
			// should not throw exception with non primitive Query (doesn't implement
			// Query#createWeight)
			qwf = new QueryWrapperFilter(new FuzzyQuery(new Term("field", "valu")));
			
			hits = searcher.Search(new MatchAllDocsQuery(), qwf, 10);
			Assert.AreEqual(1, hits.totalHits);
		}

		public static void  Main(System.String[] args)
		{
			System.String usage = typeof(IndexFiles) + " <root_directory>";
			if (args.Length == 0)
			{
				System.Console.Error.WriteLine("Usage: " + usage);
				System.Environment.Exit(1);
			}
			
			System.DateTime start = System.DateTime.Now;
			try
			{
				IndexWriter writer = new IndexWriter("index", new StandardAnalyzer(), true);
                IndexDocs(writer, new System.IO.FileInfo(args[0]));
				
				writer.Optimize();
				writer.Close();
				
				System.DateTime end = System.DateTime.Now;
				
				System.Console.Out.Write(end.Ticks - start.Ticks);
				System.Console.Out.WriteLine(" total milliseconds");
			}
			catch (System.IO.IOException e)
			{
				System.Console.Out.WriteLine(" caught a " + e.GetType() + "\n with message: " + e.Message);
			}
		}