Package org.eclipse.rdf4j.query.algebra
Class AbstractAggregateOperator
java.lang.Object
org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode
org.eclipse.rdf4j.query.algebra.UnaryValueOperator
org.eclipse.rdf4j.query.algebra.AbstractAggregateOperator
- All Implemented Interfaces:
Serializable
,Cloneable
,AggregateOperator
,GraphPatternGroupable
,QueryModelNode
,ValueExpr
,VariableScopeChange
- Direct Known Subclasses:
AggregateOperatorBase
,Avg
,Count
,GroupConcat
,Max
,Min
,Sample
,Sum
public abstract class AbstractAggregateOperator
extends UnaryValueOperator
implements AggregateOperator
Base class for shared functionality of aggregate operators (e.g. DISTINCT setting)
- Author:
- Jeen Broekstra
- See Also:
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Field Summary
Fields inherited from class org.eclipse.rdf4j.query.algebra.UnaryValueOperator
arg
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Constructor Summary
ModifierConstructorDescriptionprotected
protected
AbstractAggregateOperator
(ValueExpr arg, boolean distinct) -
Method Summary
Modifier and TypeMethodDescriptionclone()
Returns a (deep) clone of this query model node.int
hashCode()
boolean
void
setDistinct
(boolean distinct) Methods inherited from class org.eclipse.rdf4j.query.algebra.UnaryValueOperator
equals, getArg, replaceChildNode, setArg, visitChildren
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
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode
equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString, visit, visitChildren
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Constructor Details
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AbstractAggregateOperator
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AbstractAggregateOperator
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Method Details
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setDistinct
public void setDistinct(boolean distinct) - Specified by:
setDistinct
in interfaceAggregateOperator
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isDistinct
public boolean isDistinct()- Specified by:
isDistinct
in interfaceAggregateOperator
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hashCode
public int hashCode()- Overrides:
hashCode
in classUnaryValueOperator
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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 interfaceAggregateOperator
- Specified by:
clone
in interfaceQueryModelNode
- Specified by:
clone
in interfaceValueExpr
- Overrides:
clone
in classUnaryValueOperator
- Returns:
- A deep clone of this query model node.
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