it.unibz.inf.ontop.iq.node

Interface LeftJoinNode

All Superinterfaces:

BinaryNonCommutativeOperatorNode, BinaryOrderedOperatorNode, Cloneable, JoinLikeNode, JoinOrFilterNode, QueryNode

All Known Implementing Classes:

LeftJoinNodeImpl

public interface LeftJoinNode
extends JoinLikeNode, BinaryNonCommutativeOperatorNode

See IntermediateQueryFactory for creating a new instance.

Nested Class Summary

Nested classes/interfaces inherited from interface it.unibz.inf.ontop.iq.node.BinaryOrderedOperatorNode

BinaryOrderedOperatorNode.ArgumentPosition

Method Summary

Modifier and Type	Method and Description
LeftJoinNode	acceptNodeTransformer(HomogeneousQueryNodeTransformer transformer) "Accept" method for the "Visitor" pattern.
LeftJoinNode	changeOptionalFilterCondition(Optional<ImmutableExpression> newOptionalFilterCondition) Constructs a new JoinLikeNode with the following optional filter condition (recall that a QueryNode is immutable).
LeftJoinNode	clone() Cloning is needed for having multiple copies in the same intermediate query tree.

Methods inherited from interface it.unibz.inf.ontop.iq.node.JoinOrFilterNode

getOptionalFilterCondition

Methods inherited from interface it.unibz.inf.ontop.iq.node.BinaryOrderedOperatorNode

acceptTransformer, acceptVisitor, applyDescendingSubstitution, applyDescendingSubstitutionWithoutOptimizing, applyFreshRenaming, getPossibleVariableDefinitions, getVariableNullability, inferUniqueConstraints, isConstructed, isDistinct, liftIncompatibleDefinitions, normalizeForOptimization, propagateDownConstraint, removeDistincts, validateNode

Methods inherited from interface it.unibz.inf.ontop.iq.node.QueryNode

acceptVisitor, getLocallyDefinedVariables, getLocallyRequiredVariables, getLocalVariables, getRequiredVariables, isEquivalentTo, isSyntacticallyEquivalentTo, isVariableNullable

Method Detail

clone

LeftJoinNode clone()

Description copied from interface: QueryNode

Cloning is needed for having multiple copies in the same intermediate query tree.

Specified by:

clone in interface QueryNode

acceptNodeTransformer

LeftJoinNode acceptNodeTransformer(HomogeneousQueryNodeTransformer transformer)
                            throws QueryNodeTransformationException

Description copied from interface: QueryNode

"Accept" method for the "Visitor" pattern. To be implemented by leaf classes. If the transformation cannot be done, throw a QueryNodeTransformationException

Specified by:

acceptNodeTransformer in interface BinaryNonCommutativeOperatorNode

Specified by:

acceptNodeTransformer in interface QueryNode

Throws:

QueryNodeTransformationException

changeOptionalFilterCondition

LeftJoinNode changeOptionalFilterCondition(Optional<ImmutableExpression> newOptionalFilterCondition)

Description copied from interface: JoinLikeNode

Constructs a new JoinLikeNode with the following optional filter condition (recall that a QueryNode is immutable).

Specified by:

changeOptionalFilterCondition in interface JoinLikeNode