it.unibz.inf.ontop.iq.node

Interface ExtensionalDataNode

All Superinterfaces:

Cloneable, DataNode<RelationPredicate>, ExplicitVariableProjectionNode, IQTree, LeafIQTree, QueryNode

All Known Implementing Classes:

ExtensionalDataNodeImpl

public interface ExtensionalDataNode
extends DataNode<RelationPredicate>

TODO: explain

Method Summary

Modifier and Type	Method and Description
ExtensionalDataNode	acceptNodeTransformer(HomogeneousQueryNodeTransformer transformer) "Accept" method for the "Visitor" pattern.
ExtensionalDataNode	clone() Cloning is needed for having multiple copies in the same intermediate query tree.
ExtensionalDataNode	newAtom(DataAtom<RelationPredicate> newAtom) Returns a new DataNode of the same type that will use the new atom

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

getProjectionAtom

Methods inherited from interface it.unibz.inf.ontop.iq.LeafIQTree

getRootNode

Methods inherited from interface it.unibz.inf.ontop.iq.IQTree

acceptTransformer, acceptVisitor, applyDescendingSubstitution, applyDescendingSubstitutionWithoutOptimizing, applyFreshRenaming, getChildren, getKnownVariables, getPossibleVariableDefinitions, getVariableNullability, getVariables, inferUniqueConstraints, isConstructed, isDeclaredAsEmpty, isDistinct, isEquivalentTo, isLeaf, liftIncompatibleDefinitions, normalizeForOptimization, propagateDownConstraint, removeDistincts, replaceSubTree, validate

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

getVariables

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

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

Method Detail

clone

ExtensionalDataNode 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

ExtensionalDataNode 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 LeafIQTree

Specified by:

acceptNodeTransformer in interface QueryNode

Throws:

QueryNodeTransformationException

newAtom

ExtensionalDataNode newAtom(DataAtom<RelationPredicate> newAtom)

Description copied from interface: DataNode

Returns a new DataNode of the same type that will use the new atom

Specified by:

newAtom in interface DataNode<RelationPredicate>