Examples with RelationshipItem org.neo4j.storageengine.api.RelationshipItem used on opensource projects

Example 6 with RelationshipItem

use of org.neo4j.storageengine.api.RelationshipItem in project neo4j by neo4j.

the class TxIteratorRelationshipCursor method next.

@Override
public boolean next() {
    if (added == null) {
        while (cursor.next()) {
            RelationshipItem relationshipItem = cursor.get();
            long id = relationshipItem.id();
            if (state.relationshipIsDeletedInThisTx(id)) {
                continue;
            }
            visit(id, relationshipItem.type(), relationshipItem.startNode(), relationshipItem.endNode());
            relationshipState = state.getRelationshipState(relationshipItem.id());
            return true;
        }
        added = addedRelationshipIterator;
        relationshipIsAddedInThisTx = true;
    }
    if (added.hasNext()) {
        relationshipState = state.getRelationshipState(added.next());
        relationshipState.accept(this);
        return true;
    } else {
        visit(-1, -1, -1, -1);
        relationshipState = null;
        return false;
    }
}

Example 7 with RelationshipItem

use of org.neo4j.storageengine.api.RelationshipItem in project neo4j by neo4j.

the class TxSingleRelationshipCursor method next.

@Override
public boolean next() {
    if (state.relationshipIsDeletedInThisTx(nextId)) {
        visit(StatementConstants.NO_SUCH_RELATIONSHIP, StatementConstants.NO_SUCH_RELATIONSHIP_TYPE, StatementConstants.NO_SUCH_NODE, StatementConstants.NO_SUCH_NODE);
        nextId = StatementConstants.NO_SUCH_RELATIONSHIP;
        return false;
    }
    boolean exists = cursor.next();
    this.relationshipIsAddedInThisTx = state.relationshipIsAddedInThisTx(nextId);
    if (exists || relationshipIsAddedInThisTx) {
        if (relationshipIsAddedInThisTx) {
            state.relationshipVisit(nextId, this);
        } else {
            RelationshipItem relationshipItem = cursor.get();
            visit(nextId, relationshipItem.type(), relationshipItem.startNode(), relationshipItem.endNode());
        }
        relationshipState = state.getRelationshipState(nextId);
        return true;
    } else {
        visit(StatementConstants.NO_SUCH_RELATIONSHIP, StatementConstants.NO_SUCH_RELATIONSHIP_TYPE, StatementConstants.NO_SUCH_NODE, StatementConstants.NO_SUCH_NODE);
        relationshipState = null;
        nextId = StatementConstants.NO_SUCH_RELATIONSHIP;
        return false;
    }
}

Example 8 with RelationshipItem

use of org.neo4j.storageengine.api.RelationshipItem in project neo4j by neo4j.

the class StateHandlingStatementOperations method relationshipDelete.

@Override
public void relationshipDelete(final KernelStatement state, long relationshipId) throws EntityNotFoundException, InvalidTransactionTypeKernelException, AutoIndexingKernelException {
    try (Cursor<RelationshipItem> cursor = relationshipCursorById(state, relationshipId)) {
        RelationshipItem relationship = cursor.get();
        // NOTE: We implicitly delegate to neoStoreTransaction via txState.legacyState here. This is because that
        // call returns modified properties, which node manager uses to update legacy tx state. This will be cleaned up
        // once we've removed legacy tx state.
        autoIndexing.relationships().entityRemoved(state.dataWriteOperations(), relationshipId);
        final TransactionState txState = state.txState();
        if (txState.relationshipIsAddedInThisTx(relationship.id())) {
            txState.relationshipDoDeleteAddedInThisTx(relationship.id());
        } else {
            txState.relationshipDoDelete(relationship.id(), relationship.type(), relationship.startNode(), relationship.endNode());
        }
    }
}

Example 9 with RelationshipItem

use of org.neo4j.storageengine.api.RelationshipItem 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 10 with RelationshipItem

use of org.neo4j.storageengine.api.RelationshipItem 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;
    }
}