Examples with IndexEntryUpdate.add org.neo4j.kernel.api.index.IndexEntryUpdate.add used on opensource projects

Example 1 with IndexEntryUpdate.add

use of org.neo4j.kernel.api.index.IndexEntryUpdate.add in project neo4j by neo4j.

the class SimpleIndexPopulatorCompatibility method shouldApplyUpdatesIdempotently.

@Test
public void shouldApplyUpdatesIdempotently() throws Exception {
    // GIVEN
    IndexSamplingConfig indexSamplingConfig = new IndexSamplingConfig(Config.empty());
    IndexPopulator populator = indexProvider.getPopulator(17, descriptor, indexSamplingConfig);
    populator.create();
    populator.configureSampling(true);
    long nodeId = 1;
    final String propertyValue = "value1";
    PropertyAccessor propertyAccessor = (nodeId1, propertyKeyId) -> Property.stringProperty(propertyKeyId, propertyValue);
    // this update (using add())...
    populator.add(singletonList(IndexEntryUpdate.add(nodeId, descriptor.schema(), propertyValue)));
    // ...is the same as this update (using update())
    try (IndexUpdater updater = populator.newPopulatingUpdater(propertyAccessor)) {
        updater.process(add(nodeId, descriptor.schema(), propertyValue));
    }
    populator.close(true);
    // then
    IndexAccessor accessor = indexProvider.getOnlineAccessor(17, descriptor, indexSamplingConfig);
    try (IndexReader reader = accessor.newReader()) {
        int propertyKeyId = descriptor.schema().getPropertyId();
        PrimitiveLongIterator nodes = reader.query(IndexQuery.exact(propertyKeyId, propertyValue));
        assertEquals(asSet(1L), PrimitiveLongCollections.toSet(nodes));
    }
    accessor.close();
}