Package org.eclipse.rdf4j.query.algebra

Class AggregateFunctionCall

java.lang.Object

org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

org.eclipse.rdf4j.query.algebra.UnaryValueOperator

org.eclipse.rdf4j.query.algebra.AbstractAggregateOperator

org.eclipse.rdf4j.query.algebra.AggregateFunctionCall

All Implemented Interfaces:

Serializable, Cloneable, AggregateOperator, QueryModelNode, ValueExpr, VariableScopeChange

@Experimental
public class AggregateFunctionCall
extends AbstractAggregateOperator

Custom AggregateOperator function call that can be defined to take an argument and can apply distinct filtering on it.

Author:

Tomas Kovachev t.kovachev1996@gmail.com

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	iri

Fields inherited from class org.eclipse.rdf4j.query.algebra.UnaryValueOperator

arg

Constructor Summary

Constructors

Constructor	Description
AggregateFunctionCall(String iri, boolean distinct)
AggregateFunctionCall(ValueExpr arg, String iri, boolean distinct)

Method Summary

Modifier and Type	Method	Description
AggregateFunctionCall	clone()	Returns a (deep) clone of this query model node.
boolean	equals(Object o)	Returns true if this query model node and its children are recursively equal to o and its children.
String	getIRI()
String	getSignature()	Default implementation of QueryModelNode.getSignature() that prints the name of the node's class.
int	hashCode()
void	setIRI(String uri)
<X extends Exception> void	visit(QueryModelVisitor<X> visitor)	Visits this node.

Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractAggregateOperator

isDistinct, setDistinct

Methods inherited from class org.eclipse.rdf4j.query.algebra.UnaryValueOperator

getArg, replaceChildNode, setArg, visitChildren

Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getTotalTimeNanosActual, isCardinalitySet, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, 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

getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString, visitChildren

Field Details

iri

protected String iri

Constructor Details

AggregateFunctionCall

public AggregateFunctionCall(String iri,
 boolean distinct)

AggregateFunctionCall

public AggregateFunctionCall(ValueExpr arg,
 String iri,
 boolean distinct)

Method Details

getIRI

public String getIRI()

setIRI

public void setIRI(String uri)

visit

public <X extends Exception> void visit(QueryModelVisitor<X> visitor)
                                 throws X

Description copied from interface: QueryModelNode

Visits this node. The node reports itself to the visitor with the proper runtime type.

Throws:

X

getSignature

public String getSignature()

Description copied from class: AbstractQueryModelNode

Default implementation of QueryModelNode.getSignature() that prints the name of the node's class.

Specified by:

getSignature in interface QueryModelNode

Overrides:

getSignature in class AbstractQueryModelNode

Returns:

The node's signature, e.g. SLICE (offset=10, limit=10).

equals

public boolean equals(Object o)

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 interface QueryModelNode

Overrides:

equals in class AbstractAggregateOperator

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractAggregateOperator

clone

public AggregateFunctionCall 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 interface AggregateOperator

Specified by:

clone in interface QueryModelNode

Specified by:

clone in interface ValueExpr

Overrides:

clone in class AbstractAggregateOperator

Returns:

A deep clone of this query model node.