Examples with LabelScanWriter org.neo4j.kernel.api.labelscan.LabelScanWriter used on opensource projects

Example 1 with LabelScanWriter

use of org.neo4j.kernel.api.labelscan.LabelScanWriter in project neo4j by neo4j.

the class NativeLabelScanStore method start.

/**
     * Starts the store and makes it available for queries and updates.
     * Any required recovery must take place before calling this method.
     *
     * @throws IOException on {@link PageCache} exceptions.
     */
@Override
public void start() throws IOException {
    if (needsRebuild) {
        monitor.rebuilding();
        long numberOfNodes;
        // Intentionally ignore read-only flag here when rebuilding.
        try (LabelScanWriter writer = writer()) {
            numberOfNodes = fullStoreChangeStream.applyTo(writer);
        }
        monitor.rebuilt(numberOfNodes);
        needsRebuild = false;
    }
    maybeCompleteRecovery();
    started = true;
}

Example 2 with LabelScanWriter

use of org.neo4j.kernel.api.labelscan.LabelScanWriter in project neo4j by neo4j.

the class NodeRangeDocumentLabelScanStorageStrategyTest method shouldUpdateDocumentsForReLabeledNodes.

@Test
public void shouldUpdateDocumentsForReLabeledNodes() throws Exception {
    // given
    Document givenDoc = new Document();
    format.addRangeValuesField(givenDoc, 0);
    format.addLabelFields(givenDoc, "7", 0x70L);
    WritableDatabaseLabelScanIndex index = mock(WritableDatabaseLabelScanIndex.class);
    IndexWriter indexWriter = mock(IndexWriter.class);
    WritableIndexPartition partition = newIndexPartitionMock(indexWriter, givenDoc);
    when(index.getPartitions()).thenReturn(Collections.singletonList(partition));
    LabelScanWriter writer = new PartitionedLuceneLabelScanWriter(index, format);
    // when
    writer.write(labelChanges(0, labels(), labels(7, 8)));
    writer.close();
    // then
    Document thenDoc = new Document();
    format.addRangeValuesField(thenDoc, 0);
    format.addLabelFields(thenDoc, "7", 0x71L);
    format.addLabelAndSearchFields(thenDoc, 8, new Bitmap(0x01L));
    verify(indexWriter).updateDocument(eq(format.rangeTerm(0)), match(thenDoc));
}

Example 3 with LabelScanWriter

use of org.neo4j.kernel.api.labelscan.LabelScanWriter in project neo4j by neo4j.

the class NodeRangeDocumentLabelScanStorageStrategyTest method shouldUpdateDocumentToReflectLabelsAfterRegardlessOfPreviousContent.

@Test
public void shouldUpdateDocumentToReflectLabelsAfterRegardlessOfPreviousContent() throws Exception {
    // given
    IndexWriter indexWriter = mock(IndexWriter.class);
    Document doc = document(format.rangeField(0), format.labelField(6, 0x1), format.labelField(7, 0x1));
    WritableIndexPartition partition = newIndexPartitionMock(indexWriter, doc);
    WritableDatabaseLabelScanIndex index = buildLuceneIndex(partition);
    LabelScanWriter writer = new PartitionedLuceneLabelScanWriter(index, format);
    // when
    writer.write(labelChanges(0, labels(7), labels(7, 8)));
    writer.close();
    // then
    verify(indexWriter).updateDocument(eq(format.rangeTerm(0)), match(document(format.rangeField(0), format.labelField(7, 0x01), format.labelField(8, 0x01), format.labelSearchField(7), format.labelSearchField(8))));
}

Example 4 with LabelScanWriter

use of org.neo4j.kernel.api.labelscan.LabelScanWriter in project neo4j by neo4j.

the class NodeRangeDocumentLabelScanStorageStrategyTest method shouldDeleteEmptyDocuments.

@Test
public void shouldDeleteEmptyDocuments() throws Exception {
    // given
    IndexWriter indexWriter = mock(IndexWriter.class);
    Document doc = document(format.rangeField(0), format.labelField(7, 0x1));
    WritableIndexPartition partition = newIndexPartitionMock(indexWriter, doc);
    WritableDatabaseLabelScanIndex index = buildLuceneIndex(partition);
    LabelScanWriter writer = new PartitionedLuceneLabelScanWriter(index, format);
    // when
    writer.write(labelChanges(0, labels(7), labels()));
    writer.close();
    // then
    verify(indexWriter).deleteDocuments(format.rangeTerm(0));
}

Example 5 with LabelScanWriter

use of org.neo4j.kernel.api.labelscan.LabelScanWriter in project neo4j by neo4j.

the class NodeRangeDocumentLabelScanStorageStrategyTest method shouldCreateNewDocumentsForNewlyLabeledNodes.

@Test
public void shouldCreateNewDocumentsForNewlyLabeledNodes() throws Exception {
    // given
    WritableIndexPartition partition = mock(WritableIndexPartition.class);
    WritableDatabaseLabelScanIndex index = buildLuceneIndex(partition);
    PartitionSearcher partitionSearcher = mock(PartitionSearcher.class);
    when(partition.acquireSearcher()).thenReturn(partitionSearcher);
    IndexWriter indexWriter = mock(IndexWriter.class);
    when(partition.getIndexWriter()).thenReturn(indexWriter);
    IndexSearcher searcher = mock(IndexSearcher.class);
    when(partitionSearcher.getIndexSearcher()).thenReturn(searcher);
    when(searcher.search(new TermQuery(format.rangeTerm(0)), 1)).thenReturn(emptyTopDocs());
    when(searcher.search(new TermQuery(format.rangeTerm(1)), 1)).thenReturn(null);
    LabelScanWriter writer = new PartitionedLuceneLabelScanWriter(index, format);
    // when
    writer.write(labelChanges(0, labels(), labels(6, 7)));
    writer.write(labelChanges(1, labels(), labels(6, 8)));
    writer.write(labelChanges(1 << format.bitmapFormat().shift, labels(), labels(7)));
    writer.close();
    // then
    verify(partition, times(2)).acquireSearcher();
    verify(partitionSearcher, times(2)).getIndexSearcher();
    verify(partition, times(2)).getIndexWriter();
    verify(partitionSearcher, times(2)).close();
    verify(indexWriter).updateDocument(eq(format.rangeTerm(0)), match(document(format.rangeField(0), format.labelField(6, 0x3), format.labelField(7, 0x1), format.labelField(8, 0x2), format.labelSearchField(8))));
    verify(indexWriter).updateDocument(eq(format.rangeTerm(1)), match(document(format.rangeField(1), format.labelField(7, 0x1), format.labelSearchField(7))));
    verify(index).maybeRefreshBlocking();
    verifyNoMoreInteractions(partition);
}