Class Aggregate

java.lang.Object

org.eclipse.rdf4j.sparqlbuilder.core.QueryElementCollection<Operand>

org.eclipse.rdf4j.sparqlbuilder.core.StandardQueryElementCollection<Operand>

org.eclipse.rdf4j.sparqlbuilder.constraint.Expression<Aggregate>

org.eclipse.rdf4j.sparqlbuilder.constraint.Aggregate

All Implemented Interfaces:

Operand, Assignable, Groupable, Orderable, QueryElement

public class Aggregate
extends Expression<Aggregate>

A SPARQL aggregate expression.

See Also:

• SPARQL Aggregates

Field Summary

Fields inherited from class Expression

operator

Modifier and Type	Field	Description
protected SparqlOperator	operator

Fields inherited from class QueryElementCollection

elements

Modifier and Type	Field	Description
protected Collection<Operand>	elements

Method Summary

Modifier and Type	Method	Description
Aggregate	countAll()	If this is a count aggregate expressions, specify that it should count all
Aggregate	countAll(boolean countAll)	If this is a count aggregate expressions, specify if it should count all
Aggregate	distinct()	Specify this aggregate expression to be distinct
Aggregate	distinct(boolean isDistinct)	Specify if this aggregate expression should be distinct or not
String	getQueryString()
Aggregate	separator(String separator)	If this is a group_concat aggregate expression, specify the separator to use

Methods inherited from class Expression

parenthesize, parenthesize

Modifier and Type	Method	Description
Aggregate	parenthesize()	Indicate that this expression should be wrapped in parentheses when converted to a query string
Aggregate	parenthesize(boolean parenthesize)	Indicate if this expression should be wrapped in parentheses when converted to a query string

Methods inherited from class StandardQueryElementCollection

printBodyIfEmpty, printNameIfEmpty, resetWrapperMethod, setOperatorName, setOperatorName, setWrapperMethod

Modifier and Type	Method	Description
protected void	printBodyIfEmpty(boolean printBodyIfEmpty)
protected void	printNameIfEmpty(boolean printNameIfEmpty)
protected void	resetWrapperMethod()
protected void	setOperatorName(String operatorName)
protected void	setOperatorName(String operatorName, boolean pad)
protected void	setWrapperMethod(Function<String,String> wrapperMethod)

Methods inherited from class QueryElementCollection

addElements, addElements, isEmpty

Modifier and Type	Method	Description
protected <O> void	addElements(Function<? super O, ? extends Operand> mapper, O... os)
protected void	addElements(Operand... queryElements)
boolean	isEmpty()

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface Assignable

as

Modifier and Type	Method	Description
default Assignment	as(Variable var)	Create a SPARQL assignment from this object

Methods inherited from interface Orderable

asc, desc

Modifier and Type	Method	Description
default OrderCondition	asc()
default OrderCondition	desc()

Method Details

distinct

public Aggregate distinct()

Specify this aggregate expression to be distinct

Returns:

this aggregate instance

distinct

public Aggregate distinct(boolean isDistinct)

Specify if this aggregate expression should be distinct or not

Parameters:

isDistinct - if this aggregate should be distinct

Returns:

this aggregate instance

countAll

public Aggregate countAll()

If this is a count aggregate expressions, specify that it should count all

Returns:

this aggregate instance

countAll

public Aggregate countAll(boolean countAll)

If this is a count aggregate expressions, specify if it should count all

Parameters:

countAll - if this should count all arguments or not

Returns:

this aggregate instance

separator

public Aggregate separator(String separator)

If this is a group_concat aggregate expression, specify the separator to use

Parameters:

separator - the separator to use

Returns:

this aggregate instance

See Also:

• group_concat()

getQueryString

public String getQueryString()

Specified by:

getQueryString in interface QueryElement

Overrides:

getQueryString in class StandardQueryElementCollection<Operand>

Returns:

the String representing the SPARQL syntax of this element