Package org.eclipse.rdf4j.query.algebra
Class UnaryValueOperator
- java.lang.Object
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- org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
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- org.eclipse.rdf4j.query.algebra.UnaryValueOperator
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- All Implemented Interfaces:
Serializable,Cloneable,GraphPatternGroupable,QueryModelNode,ValueExpr,VariableScopeChange
- Direct Known Subclasses:
AbstractAggregateOperator,Datatype,IRIFunction,IsBNode,IsLiteral,IsNumeric,IsResource,IsURI,Label,Lang,Like,LocalName,Namespace,Not,Str
public abstract class UnaryValueOperator extends AbstractQueryModelNode implements ValueExpr
An abstract superclass for unary value operators which, by definition, has one argument.- See Also:
- Serialized Form
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Constructor Summary
Constructors Modifier Constructor Description protectedUnaryValueOperator()Creates a new empty unary value operator.protectedUnaryValueOperator(ValueExpr arg)Creates a new unary value operator.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description UnaryValueOperatorclone()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.ValueExprgetArg()Gets the argument of this unary value operator.inthashCode()voidreplaceChildNode(QueryModelNode current, QueryModelNode replacement)Default implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)that throws anIllegalArgumentExceptionindicating that current is not a child node of this node.voidsetArg(ValueExpr arg)Sets the argument of this unary value operator.<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
getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, 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, visit
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Field Detail
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arg
protected ValueExpr arg
The operator's argument.
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Constructor Detail
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UnaryValueOperator
protected UnaryValueOperator()
Creates a new empty unary value operator.
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UnaryValueOperator
protected UnaryValueOperator(ValueExpr arg)
Creates a new unary value operator.- Parameters:
arg- The operator's argument, must not be null.
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Method Detail
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getArg
public ValueExpr getArg()
Gets the argument of this unary value operator.- Returns:
- The operator's argument.
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setArg
public void setArg(ValueExpr 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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visitChildren
public <X extends Exception> void visitChildren(QueryModelVisitor<X> visitor) throws X extends Exception
Description copied from class:AbstractQueryModelNodeDummy 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:
visitChildrenin interfaceQueryModelNode- Overrides:
visitChildrenin classAbstractQueryModelNode- Throws:
X extends Exception
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replaceChildNode
public void replaceChildNode(QueryModelNode current, QueryModelNode replacement)
Description copied from class:AbstractQueryModelNodeDefault implementation ofQueryModelNode.replaceChildNode(QueryModelNode, QueryModelNode)that throws anIllegalArgumentExceptionindicating that current is not a child node of this node.- Specified by:
replaceChildNodein interfaceQueryModelNode- Overrides:
replaceChildNodein 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:QueryModelNodeReturns true if this query model node and its children are recursively equal to o and its children.- Specified by:
equalsin interfaceQueryModelNode- Overrides:
equalsin classObject
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clone
public UnaryValueOperator 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 interfaceValueExpr- Overrides:
clonein classAbstractQueryModelNode- Returns:
- A deep clone of this query model node.
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