Package org.eclipse.rdf4j.query.algebra
Class Intersection
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
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- org.eclipse.rdf4j.query.algebra.Intersection
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- All Implemented Interfaces:
Serializable,Cloneable,QueryModelNode,TupleExpr,VariableScopeChange
public class Intersection extends BinaryTupleOperator
The INTERSECT set operator, which returns the intersection of the result sets of two tuple expressions.- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
leftArg, rightArg
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Constructor Summary
Constructors Constructor Description Intersection()Intersection(TupleExpr leftArg, TupleExpr rightArg)Creates a new intersection operator that operates on the two specified arguments.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Intersectionclone()Returns a (deep) clone of this query model node.booleanequals(Object other)Returns true if this query model node and its children are recursively equal to o and its children.Set<String>getAssuredBindingNames()Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.Set<String>getBindingNames()Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.inthashCode()<X extends Exception>
voidvisit(QueryModelVisitor<X> visitor)Visits this node.-
Methods inherited from class org.eclipse.rdf4j.query.algebra.BinaryTupleOperator
getAlgorithmName, getLeftArg, getOrder, getRightArg, getSupportedOrders, replaceChildNode, setAlgorithm, setAlgorithm, setLeftArg, setOrder, setRightArg, visitChildren
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Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString
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Method Detail
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getBindingNames
public Set<String> getBindingNames()
Description copied from interface:TupleExprGets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.- Returns:
- A set of binding names.
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getAssuredBindingNames
public Set<String> getAssuredBindingNames()
Description copied from interface:TupleExprGets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.- Returns:
- A set of binding names.
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visit
public <X extends Exception> void visit(QueryModelVisitor<X> visitor) throws X extends Exception
Description copied from interface:QueryModelNodeVisits this node. The node reports itself to the visitor with the proper runtime type.- Throws:
X extends Exception
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equals
public boolean equals(Object other)
Description copied from interface:QueryModelNodeReturns true if this query model node and its children are recursively equal to o and its children.- Specified by:
equalsin interfaceQueryModelNode- Overrides:
equalsin classBinaryTupleOperator
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hashCode
public int hashCode()
- Overrides:
hashCodein classBinaryTupleOperator
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clone
public Intersection clone()
Description copied from interface:QueryModelNodeReturns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.- Specified by:
clonein interfaceQueryModelNode- Specified by:
clonein interfaceTupleExpr- Overrides:
clonein classBinaryTupleOperator- Returns:
- A deep clone of this query model node.
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