HasDeletions() публичный Метод

public HasDeletions ( ) : bool
Результат bool
Пример #1
0
        public virtual void TestTryDeleteDocument()
        {
            Directory directory = CreateIndex();

            IndexWriter writer = GetWriter(directory);

            ReferenceManager <IndexSearcher> mgr = new SearcherManager(writer, true, new SearcherFactory());

            TrackingIndexWriter mgrWriter = new TrackingIndexWriter(writer);

            IndexSearcher searcher = mgr.Acquire();

            TopDocs topDocs = searcher.Search(new TermQuery(new Term("foo", "0")), 100);

            Assert.AreEqual(1, topDocs.TotalHits);

            long result;

            if (Random.NextBoolean())
            {
                IndexReader r = DirectoryReader.Open(writer, true);
                result = mgrWriter.TryDeleteDocument(r, 0);
                r.Dispose();
            }
            else
            {
                result = mgrWriter.TryDeleteDocument(searcher.IndexReader, 0);
            }

            // The tryDeleteDocument should have succeeded:
            Assert.IsTrue(result != -1);

            Assert.IsTrue(writer.HasDeletions());

            if (Random.NextBoolean())
            {
                writer.Commit();
            }

            Assert.IsTrue(writer.HasDeletions());

            mgr.MaybeRefresh();

            searcher = mgr.Acquire();

            topDocs = searcher.Search(new TermQuery(new Term("foo", "0")), 100);

            Assert.AreEqual(0, topDocs.TotalHits);
        }
Пример #2
0
        private static RAMDirectory MakeEmptyIndex(int numDeletedDocs)
        {
            RAMDirectory d = new RAMDirectory();
            IndexWriter  w = new IndexWriter(d, new WhitespaceAnalyzer(), true, MaxFieldLength.LIMITED, null);

            for (int i = 0; i < numDeletedDocs; i++)
            {
                w.AddDocument(new Document(), null);
            }
            w.Commit(null);
            w.DeleteDocuments(null, new MatchAllDocsQuery());
            w.Commit(null);

            if (0 < numDeletedDocs)
            {
                Assert.IsTrue(w.HasDeletions(null), "writer has no deletions");
            }

            Assert.AreEqual(numDeletedDocs, w.MaxDoc(), "writer is missing some deleted docs");
            Assert.AreEqual(0, w.NumDocs(null), "writer has non-deleted docs");
            w.Close();
            IndexReader r = IndexReader.Open((Directory)d, true, null);

            Assert.AreEqual(numDeletedDocs, r.NumDeletedDocs, "reader has wrong number of deleted docs");
            r.Close();
            return(d);
        }
Пример #3
0
        public virtual void TestDeleteDocuments()
        {
            Directory directory = CreateIndex();

            IndexWriter writer = GetWriter(directory);

            ReferenceManager <IndexSearcher> mgr = new SearcherManager(writer, true, new SearcherFactory());

            IndexSearcher searcher = mgr.Acquire();

            TopDocs topDocs = searcher.Search(new TermQuery(new Term("foo", "0")), 100);

            Assert.AreEqual(1, topDocs.TotalHits);

            TrackingIndexWriter mgrWriter = new TrackingIndexWriter(writer);
            long result = mgrWriter.DeleteDocuments(new TermQuery(new Term("foo", "0")));

            Assert.AreEqual(1, result);

            // writer.Commit();

            Assert.IsTrue(writer.HasDeletions());

            mgr.MaybeRefresh();

            searcher = mgr.Acquire();

            topDocs = searcher.Search(new TermQuery(new Term("foo", "0")), 100);

            Assert.AreEqual(0, topDocs.TotalHits);
        }
Пример #4
0
 /// <summary>
 /// 删除全部索引数据
 /// </summary>
 /// <returns></returns>
 public bool DeleteAll()
 {
     bool IsSuccess = true;
     try
     {
         IndexWriter writer = new IndexWriter(directory_luce, analyzer, false, IndexWriter.MaxFieldLength.LIMITED);
         writer.DeleteAll();
         writer.Commit();
         IsSuccess = writer.HasDeletions();
         writer.Dispose();
     }
     catch
     {
         IsSuccess = false;
     }
     return IsSuccess;
 }
Пример #5
0
 /// <summary>
 /// 删除索引数据(根据id)
 /// </summary>
 /// <param name="id"></param>
 /// <returns></returns>
 public bool Delete(string id)
 {
     bool IsSuccess = false;
     Term term = new Term("id", id);
     IndexWriter writer = new IndexWriter(directory_luce, analyzer, false, IndexWriter.MaxFieldLength.LIMITED);
     writer.DeleteDocuments(term); // writer.DeleteDocuments(term)或者writer.DeleteDocuments(query);
     writer.Commit();
     IsSuccess = writer.HasDeletions();
     writer.Dispose();
     return IsSuccess;
 }