Examples with ReadOperations org.neo4j.kernel.api.ReadOperations used on opensource projects

Example 31 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class IndexIT method shouldNotListIndexesAmongConstraintIndexes.

@Test
public void shouldNotListIndexesAmongConstraintIndexes() throws Exception {
    // given
    SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
    schemaWriteOperations.indexCreate(SchemaBoundary.map(descriptor));
    commit();
    // then/when
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertFalse(readOperations.uniqueIndexesGetAll().hasNext());
    assertFalse(readOperations.uniqueIndexesGetForLabel(labelId).hasNext());
}

Example 32 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class IndexIT method rollBackIndexRuleShouldNotBeCommitted.

@Test
public void rollBackIndexRuleShouldNotBeCommitted() throws Exception {
    // GIVEN
    SchemaWriteOperations schemaWriteOperations = schemaWriteOperationsInNewTransaction();
    // WHEN
    schemaWriteOperations.indexCreate(SchemaBoundary.map(descriptor));
    // don't mark as success
    rollback();
    // THEN
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertEquals(emptySetOf(NewIndexDescriptor.class), asSet(readOperations.indexesGetForLabel(labelId)));
    commit();
}

Example 33 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class IndexIT method shouldRemoveAConstraintIndexWithoutOwnerInRecovery.

@Test
public void shouldRemoveAConstraintIndexWithoutOwnerInRecovery() throws Exception {
    // given
    PropertyAccessor propertyAccessor = mock(PropertyAccessor.class);
    ConstraintIndexCreator creator = new ConstraintIndexCreator(() -> kernel, indexingService, propertyAccessor, false);
    creator.createConstraintIndex(SchemaBoundary.map(descriptor));
    // when
    restartDb();
    // then
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertEquals(emptySetOf(NewIndexDescriptor.class), asSet(readOperations.indexesGetForLabel(labelId)));
    commit();
}

Example 34 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class IndexCRUDIT method addingALabelToPreExistingNodeShouldGetIndexed.

@Test
public void addingALabelToPreExistingNodeShouldGetIndexed() throws Exception {
    // GIVEN
    String indexProperty = "indexProperty";
    GatheringIndexWriter writer = newWriter();
    createIndex(db, myLabel, indexProperty);
    // WHEN
    String otherProperty = "otherProperty";
    int value = 12;
    int otherValue = 17;
    Node node = createNode(map(indexProperty, value, otherProperty, otherValue));
    // THEN
    assertThat(writer.updatesCommitted.size(), equalTo(0));
    // AND WHEN
    try (Transaction tx = db.beginTx()) {
        node.addLabel(myLabel);
        tx.success();
    }
    // THEN
    try (Transaction tx = db.beginTx()) {
        ReadOperations readOperations = ctxSupplier.get().readOperations();
        int propertyKey1 = readOperations.propertyKeyGetForName(indexProperty);
        int label = readOperations.labelGetForName(myLabel.name());
        LabelSchemaDescriptor descriptor = SchemaDescriptorFactory.forLabel(label, propertyKey1);
        assertThat(writer.updatesCommitted, equalTo(asSet(IndexEntryUpdate.add(node.getId(), descriptor, value))));
        tx.success();
    }
}

Example 35 with ReadOperations

use of org.neo4j.kernel.api.ReadOperations in project neo4j by neo4j.

the class GraphDbStructureGuide method showStructure.

private void showStructure(Statement statement, DbStructureVisitor visitor) {
    ReadOperations read = statement.readOperations();
    try {
        showTokens(visitor, read);
        showSchema(visitor, read);
        showStatistics(visitor, read);
    } catch (KernelException e) {
        throw new IllegalStateException("Kernel exception when traversing database schema structure and statistics.  This is not expected to happen.", e);
    }
}