Package org.eclipse.rdf4j.query.algebra
Class Bound
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.query.algebra.Bound
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- All Implemented Interfaces:
Serializable
,Cloneable
,GraphPatternGroupable
,QueryModelNode
,ValueExpr
,VariableScopeChange
public class Bound extends AbstractQueryModelNode implements ValueExpr
The BOUND function, as defined in SPARQL Query Language for RDF; checks if a variable is bound.- Author:
- Arjohn Kampman
- See Also:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Bound
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.Var
getArg()
Gets the argument of this unary value operator.int
hashCode()
void
replaceChildNode(QueryModelNode current, QueryModelNode replacement)
Default implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)
that throws anIllegalArgumentException
indicating that current is not a child node of this node.void
setArg(Var arg)
Sets the argument of this unary value operator.<X extends Exception>
voidvisit(QueryModelVisitor<X> visitor)
Visits this node.<X extends Exception>
voidvisitChildren(QueryModelVisitor<X> visitor)
Dummy implementation ofQueryModelNode.visitChildren(org.eclipse.rdf4j.query.algebra.QueryModelVisitor<X>)
that does nothing.-
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
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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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Field Detail
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arg
protected Var arg
The operator's argument.
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Constructor Detail
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Bound
public Bound()
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Bound
public Bound(Var arg)
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Method Detail
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getArg
public Var getArg()
Gets the argument of this unary value operator.- Returns:
- The operator's argument.
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setArg
public void setArg(Var arg)
Sets the argument of this unary value operator.- Parameters:
arg
- The (new) argument for this operator, must not be null.
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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.- Specified by:
visit
in interfaceQueryModelNode
- Throws:
X extends Exception
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visitChildren
public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor) throws X extends Exception
Description copied from class:AbstractQueryModelNode
Dummy implementation ofQueryModelNode.visitChildren(org.eclipse.rdf4j.query.algebra.QueryModelVisitor<X>)
that does nothing. Subclasses should override this method when they have child nodes.- Specified by:
visitChildren
in interfaceQueryModelNode
- Overrides:
visitChildren
in classAbstractQueryModelNode
- Throws:
X extends Exception
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replaceChildNode
public void replaceChildNode(QueryModelNode current, QueryModelNode replacement)
Description copied from class:AbstractQueryModelNode
Default implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)
that throws anIllegalArgumentException
indicating that current is not a child node of this node.- Specified by:
replaceChildNode
in interfaceQueryModelNode
- Overrides:
replaceChildNode
in classAbstractQueryModelNode
- Parameters:
current
- The current child node.replacement
- The new child node.
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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 classObject
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clone
public Bound 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 interfaceValueExpr
- Overrides:
clone
in classAbstractQueryModelNode
- Returns:
- A deep clone of this query model node.
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