Package org.eclipse.rdf4j.query.algebra
Class UnaryTupleOperator
java.lang.Object
org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
org.eclipse.rdf4j.query.algebra.UnaryTupleOperator
- All Implemented Interfaces:
Serializable,Cloneable,QueryModelNode,TupleExpr,VariableScopeChange
- Direct Known Subclasses:
DescribeOperator,Distinct,Extension,Filter,Group,MultiProjection,Order,Projection,QueryRoot,Reduced,Service,Slice
An abstract superclass for unary tuple operators which, by definition, has one argument.
- See Also:
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Field Summary
Fields -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotectedprotectedCreates a new unary tuple operator. -
Method Summary
Modifier and TypeMethodDescriptionclone()Returns a (deep) clone of this query model node.booleanReturns true if this query model node and its children are recursively equal to o and its children.getArg()Gets the argument of this unary tuple operator.Gets the names of the bindings that are guaranteed to be present in the results produced by this tuple expression.Gets the names of the bindings that are, or can be, returned by this tuple expression when it is evaluated.getOrder()getSupportedOrders(AvailableStatementOrder tripleSource) inthashCode()voidreplaceChildNode(QueryModelNode current, QueryModelNode replacement) Replaces one of the child nodes with a new node.voidSets the argument of this unary tuple operator.void<X extends Exception>
voidvisitChildren(QueryModelVisitor<X> visitor) Visits the children of this node.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, toStringMethods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, waitMethods 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 Details
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arg
The operator's argument.
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Constructor Details
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UnaryTupleOperator
protected UnaryTupleOperator() -
UnaryTupleOperator
Creates a new unary tuple operator.- Parameters:
arg- The operator's argument, must not be null.
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Method Details
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getArg
Gets the argument of this unary tuple operator.- Returns:
- The operator's argument.
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setArg
Sets the argument of this unary tuple operator.- Parameters:
arg- The (new) argument for this operator, must not be null.
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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.- Specified by:
getBindingNamesin interfaceTupleExpr- Returns:
- A set of binding names.
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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.- Specified by:
getAssuredBindingNamesin interfaceTupleExpr- Returns:
- A set of binding names.
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visitChildren
Description copied from interface:QueryModelNodeVisits the children of this node. The node callsQueryModelNode.visit(QueryModelVisitor)on all of its child nodes.- Specified by:
visitChildrenin interfaceQueryModelNode- Throws:
X extends Exception
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replaceChildNode
Description copied from interface:QueryModelNodeReplaces one of the child nodes with a new node.- Specified by:
replaceChildNodein interfaceQueryModelNode- Parameters:
current- The current child node.replacement- The new child node.
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equals
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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hashCode
public int hashCode() -
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 classAbstractQueryModelNode- Returns:
- A deep clone of this query model node.
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getSupportedOrders
- Specified by:
getSupportedOrdersin interfaceTupleExpr
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setOrder
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getOrder
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