Module org.apache.jena.arq

Package org.apache.jena.sparql.expr.aggregate

Class AggCustom

java.lang.Object

org.apache.jena.sparql.expr.aggregate.AggregatorBase

org.apache.jena.sparql.expr.aggregate.AggCustom

All Implemented Interfaces:

Aggregator

public class AggCustom
extends AggregatorBase

Syntax element and framework execution for custom aggregates.

Constructor Summary

Constructors

Constructor	Description
AggCustom(String iri, boolean distinct, ExprList exprs)

Method Summary

Modifier and Type	Method	Description
String	asSparqlExpr(SerializationContext sCxt)	Format as an (extended) SPARQL expression
Aggregator	copy(ExprList exprs)
static Accumulator	createAccNull()
Accumulator	createAccumulator()	Create an accumulator for this aggregator
boolean	equals(Aggregator other, boolean bySyntax)	Consider this 'protected'
Expr	getExpr()
String	getIRI()
org.apache.jena.graph.Node	getValueEmpty()	Value if there are no groups : return null for no result
int	hashCode()
String	toPrefixString()

Methods inherited from class org.apache.jena.sparql.expr.aggregate.AggregatorBase

copyTransform, equals, getExprList, getName, getValue, key, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

AggCustom

public AggCustom(String iri,
 boolean distinct,
 ExprList exprs)

Method Details

copy

public Aggregator copy(ExprList exprs)

asSparqlExpr

public String asSparqlExpr(SerializationContext sCxt)

Description copied from interface: Aggregator

Format as an (extended) SPARQL expression

Specified by:

asSparqlExpr in interface Aggregator

Overrides:

asSparqlExpr in class AggregatorBase

toPrefixString

public String toPrefixString()

Specified by:

toPrefixString in interface Aggregator

Overrides:

toPrefixString in class AggregatorBase

createAccumulator

public Accumulator createAccumulator()

Description copied from interface: Aggregator

Create an accumulator for this aggregator

Specified by:

createAccumulator in interface Aggregator

Specified by:

createAccumulator in class AggregatorBase

getValueEmpty

public org.apache.jena.graph.Node getValueEmpty()

Description copied from interface: Aggregator

Value if there are no groups : return null for no result

Specified by:

getValueEmpty in interface Aggregator

Specified by:

getValueEmpty in class AggregatorBase

getExpr

public Expr getExpr()

getIRI

public String getIRI()

hashCode

public int hashCode()

Specified by:

hashCode in interface Aggregator

Specified by:

hashCode in class AggregatorBase

equals

public boolean equals(Aggregator other,
 boolean bySyntax)

Description copied from interface: Aggregator

Consider this 'protected'

createAccNull

public static Accumulator createAccNull()