Golang boltdb.Open函数代码示例

func TestIndexInsertMultiple(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}

	var expectedCount uint64

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	doc = document.NewDocument("2")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	// should have 4 rows (1 for version, 1 for schema field, and 2 for single term, and 1 for the term count,  and 2 for the back index entries)
	expectedLength := uint64(1 + 1 + 2 + 1 + 2)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}

	// close and reopen and and one more to testing counting works correctly
	idx.Close()
	store, err = boltdb.Open("test", "bleve")
	idx = NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc = document.NewDocument("3")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("expected doc count: %d, got %d", expectedCount, docCount)
	}
}

func TestIndexInsertWithStore(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	var expectedCount uint64
	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	docCount = idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	// should have 6 rows (1 for version, 1 for schema field, and 1 for single term, and 1 for the stored field and 1 for the term count,  and 1 for the back index entry)
	expectedLength := uint64(1 + 1 + 1 + 1 + 1 + 1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}

	indexReader := idx.Reader()
	defer indexReader.Close()

	storedDoc, err := indexReader.Document("1")
	if err != nil {
		t.Error(err)
	}

	if len(storedDoc.Fields) != 1 {
		t.Errorf("expected 1 stored field, got %d", len(storedDoc.Fields))
	}
	textField, ok := storedDoc.Fields[0].(*document.TextField)
	if !ok {
		t.Errorf("expected text field")
	}
	if string(textField.Value()) != "test" {
		t.Errorf("expected field content 'test', got '%s'", string(textField.Value()))
	}
}

func TestIndexInternalCRUD(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	indexReader := idx.Reader()
	defer indexReader.Close()

	// get something that doesnt exist yet
	val, err := indexReader.GetInternal([]byte("key"))
	if err != nil {
		t.Error(err)
	}
	if val != nil {
		t.Errorf("expected nil, got %s", val)
	}

	// set
	err = idx.SetInternal([]byte("key"), []byte("abc"))
	if err != nil {
		t.Error(err)
	}

	indexReader = idx.Reader()
	defer indexReader.Close()

	// get
	val, err = indexReader.GetInternal([]byte("key"))
	if err != nil {
		t.Error(err)
	}
	if string(val) != "abc" {
		t.Errorf("expected %s, got '%s'", "abc", val)
	}

	// delete
	err = idx.DeleteInternal([]byte("key"))
	if err != nil {
		t.Error(err)
	}

	indexReader = idx.Reader()
	defer indexReader.Close()

	// get again
	val, err = indexReader.GetInternal([]byte("key"))
	if err != nil {
		t.Error(err)
	}
	if val != nil {
		t.Errorf("expected nil, got %s", val)
	}
}

func TestIndexDocumentFieldTerms(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	idx := NewUpsideDownCouch(store)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField|document.IncludeTermVectors))
	doc.AddField(document.NewTextFieldWithIndexingOptions("title", []uint64{}, []byte("mister"), document.IndexField|document.StoreField|document.IncludeTermVectors))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	fieldTerms, err := idx.DocumentFieldTerms("1")
	if err != nil {
		t.Error(err)
	}
	expectedFieldTerms := index.FieldTerms{
		"name":  []string{"test"},
		"title": []string{"mister"},
	}
	if !reflect.DeepEqual(fieldTerms, expectedFieldTerms) {
		t.Errorf("expected field terms: %#v, got: %#v", expectedFieldTerms, fieldTerms)
	}
}

func BenchmarkBoltDBIndexing2Workers100Batch(b *testing.B) {
	s, err := boltdb.Open("test", "bleve")
	if err != nil {
		b.Fatal(err)
	}
	defer os.RemoveAll("test")
	defer s.Close()

	CommonBenchmarkIndexBatch(b, s, 2, 100)
}

func TestIndexOpenReopen(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}

	var expectedCount uint64
	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	// opening database should have inserted version
	expectedLength := uint64(1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}

	// now close it
	idx.Close()

	store, err = boltdb.Open("test", "bleve")
	if err != nil {
		t.Fatalf("error opening store: %v", err)
	}
	idx = NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}

	// now close it
	idx.Close()
}

func TestIndexInsertThenUpdate(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	// this update should overwrite one term, and introduce one new one
	doc = document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithAnalyzer("name", []uint64{}, []byte("test fail"), testAnalyzer))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error deleting entry from index: %v", err)
	}

	// should have 2 row (1 for version, 1 for schema field, and 2 for the two term, and 2 for the term counts, and 1 for the back index entry)
	expectedLength := uint64(1 + 1 + 2 + 2 + 1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}

	// now do another update that should remove one of term
	doc = document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("fail")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error deleting entry from index: %v", err)
	}

	// should have 2 row (1 for version, 1 for schema field, and 1 for the remaining term, and 1 for the term count, and 1 for the back index entry)
	expectedLength = uint64(1 + 1 + 1 + 1 + 1)
	rowCount = idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}
}

func TestIndexTermReaderCompositeFields(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField|document.IncludeTermVectors))
	doc.AddField(document.NewTextFieldWithIndexingOptions("title", []uint64{}, []byte("mister"), document.IndexField|document.StoreField|document.IncludeTermVectors))
	doc.AddField(document.NewCompositeFieldWithIndexingOptions("_all", true, nil, nil, document.IndexField|document.IncludeTermVectors))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	indexReader := idx.Reader()
	defer indexReader.Close()

	termFieldReader, err := indexReader.TermFieldReader([]byte("mister"), "_all")
	if err != nil {
		t.Error(err)
	}

	tfd, err := termFieldReader.Next()
	for tfd != nil && err == nil {
		if tfd.ID != "1" {
			t.Errorf("expected to find document id 1")
		}
		tfd, err = termFieldReader.Next()
	}
	if err != nil {
		t.Error(err)
	}
}

func TestIndexInsertFields(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField))
	doc.AddField(document.NewNumericFieldWithIndexingOptions("age", []uint64{}, 35.99, document.IndexField|document.StoreField))
	dateField, err := document.NewDateTimeFieldWithIndexingOptions("unixEpoch", []uint64{}, time.Unix(0, 0), document.IndexField|document.StoreField)
	if err != nil {
		t.Error(err)
	}
	doc.AddField(dateField)
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	indexReader := idx.Reader()
	defer indexReader.Close()

	fields, err := indexReader.Fields()
	if err != nil {
		t.Error(err)
	} else {
		expectedFields := []string{"name", "age", "unixEpoch"}
		if !reflect.DeepEqual(fields, expectedFields) {
			t.Errorf("expected fields: %v, got %v", expectedFields, fields)
		}
	}

}

func TestIndexInsert(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	idx := NewUpsideDownCouch(store)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	var expectedCount uint64
	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	docCount = idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	// should have 4 rows (1 for version, 1 for schema field, and 1 for single term, and 1 for the term count,  and 1 for the back index entry)
	expectedLength := uint64(1 + 1 + 1 + 1 + 1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}
}

func TestIndexFieldsMisc(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField))
	doc.AddField(document.NewTextFieldWithIndexingOptions("title", []uint64{}, []byte("mister"), document.IndexField|document.StoreField))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	fieldName1 := idx.fieldIndexCache.FieldName(1)
	if fieldName1 != "name" {
		t.Errorf("expected field named 'name', got '%s'", fieldName1)
	}
	fieldName2 := idx.fieldIndexCache.FieldName(2)
	if fieldName2 != "title" {
		t.Errorf("expected field named 'title', got '%s'", fieldName2)
	}
	fieldName3 := idx.fieldIndexCache.FieldName(3)
	if fieldName3 != "" {
		t.Errorf("expected field named '', got '%s'", fieldName3)
	}

}

func TestIndexInsertThenDelete(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	var expectedCount uint64
	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	doc2 := document.NewDocument("2")
	doc2.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc2)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	docCount = idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	err = idx.Delete("1")
	if err != nil {
		t.Errorf("Error deleting entry from index: %v", err)
	}
	expectedCount--

	docCount = idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	err = idx.Delete("2")
	if err != nil {
		t.Errorf("Error deleting entry from index: %v", err)
	}
	expectedCount--

	docCount = idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	// should have 2 row (1 for version, 1 for schema field)
	expectedLength := uint64(1 + 1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}
}

func TestIndexFieldReader(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	idx := NewUpsideDownCouch(store)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	var expectedCount uint64
	doc := document.NewDocument("1")
	doc.AddField(document.NewTextField("name", []uint64{}, []byte("test")))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	doc = document.NewDocument("2")
	doc.AddField(document.NewTextFieldWithAnalyzer("name", []uint64{}, []byte("test test test"), testAnalyzer))
	doc.AddField(document.NewTextFieldCustom("desc", []uint64{}, []byte("eat more rice"), document.IndexField|document.IncludeTermVectors, testAnalyzer))
	doc.AddField(document.NewTextFieldCustom("prefix", []uint64{}, []byte("bob cat cats catting dog doggy zoo"), document.IndexField|document.IncludeTermVectors, testAnalyzer))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}
	expectedCount++

	reader, err := idx.FieldReader("name", nil, nil)
	if err != nil {
		t.Errorf("error creating reader: %v", err)
	}
	defer reader.Close()

	termCount := 0
	curr, err := reader.Next()
	for err == nil && curr != nil {
		termCount++
		if curr.Term != "test" {
			t.Errorf("expected term to be 'test', got '%s'", curr.Term)
		}
		curr, err = reader.Next()
	}
	if termCount != 1 {
		t.Errorf("expected 1 term for this field, got %d", termCount)
	}

	reader, err = idx.FieldReader("desc", nil, nil)
	if err != nil {
		t.Errorf("error creating reader: %v", err)
	}
	defer reader.Close()

	termCount = 0
	terms := make([]string, 0)
	curr, err = reader.Next()
	for err == nil && curr != nil {
		termCount++
		terms = append(terms, curr.Term)
		curr, err = reader.Next()
	}
	if termCount != 3 {
		t.Errorf("expected 3 term for this field, got %d", termCount)
	}
	expectedTerms := []string{"eat", "more", "rice"}
	if !reflect.DeepEqual(expectedTerms, terms) {
		t.Errorf("expected %#v, got %#v", expectedTerms, terms)
	}

	// test use case for prefix
	reader, err = idx.FieldReader("prefix", []byte("cat"), []byte("cat"))
	if err != nil {
		t.Errorf("error creating reader: %v", err)
	}
	defer reader.Close()

	termCount = 0
	terms = make([]string, 0)
	curr, err = reader.Next()
	for err == nil && curr != nil {
		termCount++
		terms = append(terms, curr.Term)
		curr, err = reader.Next()
	}
	if termCount != 3 {
		t.Errorf("expected 3 term for this field, got %d", termCount)
	}
	expectedTerms = []string{"cats", "catting", "cat"}
	if !reflect.DeepEqual(expectedTerms, terms) {
		t.Errorf("expected %#v, got %#v", expectedTerms, terms)
	}
}

func TestDump(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	analysisQueue := NewAnalysisQueue(1)
	idx := NewUpsideDownCouch(store, analysisQueue)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	var expectedCount uint64
	docCount := idx.DocCount()
	if docCount != expectedCount {
		t.Errorf("Expected document count to be %d got %d", expectedCount, docCount)
	}

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField))
	doc.AddField(document.NewNumericFieldWithIndexingOptions("age", []uint64{}, 35.99, document.IndexField|document.StoreField))
	dateField, err := document.NewDateTimeFieldWithIndexingOptions("unixEpoch", []uint64{}, time.Unix(0, 0), document.IndexField|document.StoreField)
	if err != nil {
		t.Error(err)
	}
	doc.AddField(dateField)
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	doc = document.NewDocument("2")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test2"), document.IndexField|document.StoreField))
	doc.AddField(document.NewNumericFieldWithIndexingOptions("age", []uint64{}, 35.99, document.IndexField|document.StoreField))
	dateField, err = document.NewDateTimeFieldWithIndexingOptions("unixEpoch", []uint64{}, time.Unix(0, 0), document.IndexField|document.StoreField)
	if err != nil {
		t.Error(err)
	}
	doc.AddField(dateField)
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	fieldsCount := 0
	fieldsRows := idx.DumpFields()
	for _ = range fieldsRows {
		fieldsCount++
	}
	if fieldsCount != 3 {
		t.Errorf("expected 3 fields, got %d", fieldsCount)
	}

	// 1 text term
	// 16 numeric terms
	// 16 date terms
	// 3 stored fields
	expectedDocRowCount := int(1 + (2 * (64 / document.DefaultPrecisionStep)) + 3)
	docRowCount := 0
	docRows := idx.DumpDoc("1")
	for _ = range docRows {
		docRowCount++
	}
	if docRowCount != expectedDocRowCount {
		t.Errorf("expected %d rows for document, got %d", expectedDocRowCount, docRowCount)
	}

	docRowCount = 0
	docRows = idx.DumpDoc("2")
	for _ = range docRows {
		docRowCount++
	}
	if docRowCount != expectedDocRowCount {
		t.Errorf("expected %d rows for document, got %d", expectedDocRowCount, docRowCount)
	}

	// 1 version
	// fieldsCount field rows
	// 2 docs * expectedDocRowCount
	// 2 back index rows
	// 2 text term row count (2 different text terms)
	// 16 numeric term row counts (shared for both docs, same numeric value)
	// 16 date term row counts (shared for both docs, same date value)
	expectedAllRowCount := int(1 + fieldsCount + (2 * expectedDocRowCount) + 2 + 2 + int((2 * (64 / document.DefaultPrecisionStep))))
	allRowCount := 0
	allRows := idx.DumpAll()
	for _ = range allRows {
		allRowCount++
	}
	if allRowCount != expectedAllRowCount {
		t.Errorf("expected %d rows for all, got %d", expectedAllRowCount, allRowCount)
	}
}

func TestIndexUpdateComposites(t *testing.T) {
	defer os.RemoveAll("test")

	store, err := boltdb.Open("test", "bleve")
	if err != nil {
		t.Error(err)
	}
	idx := NewUpsideDownCouch(store)
	err = idx.Open()
	if err != nil {
		t.Errorf("error opening index: %v", err)
	}
	defer idx.Close()

	doc := document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("test"), document.IndexField|document.StoreField))
	doc.AddField(document.NewTextFieldWithIndexingOptions("title", []uint64{}, []byte("mister"), document.IndexField|document.StoreField))
	doc.AddField(document.NewCompositeFieldWithIndexingOptions("_all", true, nil, nil, document.IndexField))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	// should have 72 rows
	// 1 for version
	// 3 for schema fields
	// 4 for text term
	// 2 for the stored field
	// 4 for the text term count
	// 1 for the back index entry
	expectedLength := uint64(1 + 3 + 4 + 2 + 4 + 1)
	rowCount := idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}

	// now lets update it
	doc = document.NewDocument("1")
	doc.AddField(document.NewTextFieldWithIndexingOptions("name", []uint64{}, []byte("testupdated"), document.IndexField|document.StoreField))
	doc.AddField(document.NewTextFieldWithIndexingOptions("title", []uint64{}, []byte("misterupdated"), document.IndexField|document.StoreField))
	doc.AddField(document.NewCompositeFieldWithIndexingOptions("_all", true, nil, nil, document.IndexField))
	err = idx.Update(doc)
	if err != nil {
		t.Errorf("Error updating index: %v", err)
	}

	indexReader := idx.Reader()
	defer indexReader.Close()

	// make sure new values are in index
	storedDoc, err := indexReader.Document("1")
	if err != nil {
		t.Error(err)
	}
	if len(storedDoc.Fields) != 2 {
		t.Errorf("expected 2 stored field, got %d", len(storedDoc.Fields))
	}
	textField, ok := storedDoc.Fields[0].(*document.TextField)
	if !ok {
		t.Errorf("expected text field")
	}
	if string(textField.Value()) != "testupdated" {
		t.Errorf("expected field content 'test', got '%s'", string(textField.Value()))
	}

	// should have the same row count as before
	rowCount = idx.rowCount()
	if rowCount != expectedLength {
		t.Errorf("expected %d rows, got: %d", expectedLength, rowCount)
	}
}