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