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:
AggregateFunctionCall,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 -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotectedprotectedAbstractAggregateOperator(ValueExpr arg, boolean distinct) -
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.inthashCode()booleanvoidsetDistinct(boolean distinct) Methods inherited from class org.eclipse.rdf4j.query.algebra.UnaryValueOperator
getArg, replaceChildNode, setArg, visitChildrenMethods 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, 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, 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:
setDistinctin interfaceAggregateOperator
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isDistinct
public boolean isDistinct()- Specified by:
isDistinctin interfaceAggregateOperator
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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 classUnaryValueOperator
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hashCode
public int hashCode()- Overrides:
hashCodein classUnaryValueOperator
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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 interfaceAggregateOperator- Specified by:
clonein interfaceQueryModelNode- Specified by:
clonein interfaceValueExpr- Overrides:
clonein classUnaryValueOperator- Returns:
- A deep clone of this query model node.
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