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

Example 1 with DataWriteOperations

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

the class NodeGetUniqueFromIndexSeekIT method createNodeWithValues.

private long createNodeWithValues(String value1, String value2) throws KernelException {
    DataWriteOperations dataStatement = dataWriteOperationsInNewTransaction();
    long nodeId = dataStatement.nodeCreate();
    dataStatement.nodeAddLabel(nodeId, labelId);
    dataStatement.nodeSetProperty(nodeId, Property.stringProperty(propertyId1, value1));
    dataStatement.nodeSetProperty(nodeId, Property.stringProperty(propertyId2, value2));
    commit();
    return nodeId;
}

Example 2 with DataWriteOperations

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

the class PropertyIT method shouldBeAbleToRemoveResetAndTwiceRemovePropertyOnNode.

@Test
public void shouldBeAbleToRemoveResetAndTwiceRemovePropertyOnNode() throws Exception {
    // given
    Statement statement = statementInNewTransaction(AnonymousContext.writeToken());
    int prop = statement.tokenWriteOperations().propertyKeyGetOrCreateForName("foo");
    long node = statement.dataWriteOperations().nodeCreate();
    statement.dataWriteOperations().nodeSetProperty(node, property(prop, "bar"));
    commit();
    // when
    DataWriteOperations dataWriteOperations = dataWriteOperationsInNewTransaction();
    dataWriteOperations.nodeRemoveProperty(node, prop);
    dataWriteOperations.nodeSetProperty(node, property(prop, "bar"));
    dataWriteOperations.nodeRemoveProperty(node, prop);
    dataWriteOperations.nodeRemoveProperty(node, prop);
    commit();
    // then
    ReadOperations readOperations = readOperationsInNewTransaction();
    assertThat(readOperations.nodeGetProperty(node, prop), nullValue());
}

Example 3 with DataWriteOperations

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

the class StateHandlingStatementOperations method nodeRemoveProperty.

@Override
public Property nodeRemoveProperty(KernelStatement state, long nodeId, int propertyKeyId) throws EntityNotFoundException, InvalidTransactionTypeKernelException, AutoIndexingKernelException {
    DataWriteOperations ops = state.dataWriteOperations();
    try (Cursor<NodeItem> cursor = nodeCursorById(state, nodeId)) {
        NodeItem node = cursor.get();
        DefinedProperty existingProperty = NO_SUCH_PROPERTY;
        try (Cursor<PropertyItem> properties = nodeGetPropertyCursor(state, node, propertyKeyId)) {
            if (properties.next()) {
                existingProperty = Property.property(properties.get().propertyKeyId(), properties.get().value());
                autoIndexing.nodes().propertyRemoved(ops, nodeId, propertyKeyId);
                state.txState().nodeDoRemoveProperty(node.id(), existingProperty);
                indexTxStateUpdater.onPropertyRemove(state, node, existingProperty);
            }
        }
        if (existingProperty == NO_SUCH_PROPERTY) {
            return Property.noProperty(propertyKeyId, EntityType.NODE, node.id());
        }
        return existingProperty;
    }
}

Example 4 with DataWriteOperations

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

the class StateHandlingStatementOperations method relationshipRemoveProperty.

@Override
public Property relationshipRemoveProperty(KernelStatement state, long relationshipId, int propertyKeyId) throws EntityNotFoundException, InvalidTransactionTypeKernelException, AutoIndexingKernelException {
    DataWriteOperations ops = state.dataWriteOperations();
    try (Cursor<RelationshipItem> cursor = relationshipCursorById(state, relationshipId)) {
        RelationshipItem relationship = cursor.get();
        Property existingProperty;
        try (Cursor<PropertyItem> properties = relationshipGetPropertyCursor(state, relationship, propertyKeyId)) {
            if (!properties.next()) {
                existingProperty = Property.noProperty(propertyKeyId, EntityType.RELATIONSHIP, relationship.id());
            } else {
                existingProperty = Property.property(properties.get().propertyKeyId(), properties.get().value());
                autoIndexing.relationships().propertyRemoved(ops, relationshipId, propertyKeyId);
                state.txState().relationshipDoRemoveProperty(relationship.id(), (DefinedProperty) existingProperty);
            }
        }
        return existingProperty;
    }
}

Example 5 with DataWriteOperations

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

the class StateHandlingStatementOperations method relationshipSetProperty.

@Override
public Property relationshipSetProperty(KernelStatement state, long relationshipId, DefinedProperty property) throws EntityNotFoundException, InvalidTransactionTypeKernelException, AutoIndexingKernelException {
    DataWriteOperations ops = state.dataWriteOperations();
    try (Cursor<RelationshipItem> cursor = relationshipCursorById(state, relationshipId)) {
        RelationshipItem relationship = cursor.get();
        Property existingProperty;
        try (Cursor<PropertyItem> properties = relationshipGetPropertyCursor(state, relationship, property.propertyKeyId())) {
            if (!properties.next()) {
                autoIndexing.relationships().propertyAdded(ops, relationshipId, property);
                existingProperty = Property.noProperty(property.propertyKeyId(), EntityType.RELATIONSHIP, relationship.id());
            } else {
                existingProperty = Property.property(properties.get().propertyKeyId(), properties.get().value());
                autoIndexing.relationships().propertyChanged(ops, relationshipId, existingProperty, property);
            }
        }
        state.txState().relationshipDoReplaceProperty(relationship.id(), existingProperty, property);
        return existingProperty;
    }
}