it.unibz.inf.ontop.iq.node

Interface ExplicitVariableProjectionNode

All Superinterfaces:

Cloneable, QueryNode

All Known Subinterfaces:

AggregationNode, ConstructionNode, DataNode<P>, EmptyNode, ExtendedProjectionNode, ExtensionalDataNode, IntensionalDataNode, LeafIQTree, NativeNode, TrueNode, UnionNode

All Known Implementing Classes:

AggregationNodeImpl, ConstructionNodeImpl, DataNodeImpl, EmptyNodeImpl, ExtendedProjectionNodeImpl, ExtensionalDataNodeImpl, IntensionalDataNodeImpl, LeafIQTreeImpl, NativeNodeImpl, TrueNodeImpl, UnionNodeImpl

public interface ExplicitVariableProjectionNode
extends QueryNode

Node that explicitly declares the variables returned by its sub-tree. Common abstraction for ConstructionNodes, UnionNodes, DataNodes and EmptyNodes.

Method Summary

Modifier and Type	Method and Description
com.google.common.collect.ImmutableSet<Variable>	getVariables() Set of variables returned by any sub-tree where this node is the root.

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

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

Method Detail

getVariables

com.google.common.collect.ImmutableSet<Variable> getVariables()

Set of variables returned by any sub-tree where this node is the root.