Package org.eclipse.rdf4j.sparqlbuilder.core

Class Projection

java.lang.Object

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

org.eclipse.rdf4j.sparqlbuilder.core.Projection

All Implemented Interfaces:

QueryElement

public class Projection
extends QueryElementCollection<Projectable>

A SPARQL Projection

See Also:

• SPARQL Projections

Field Summary

Fields inherited from class org.eclipse.rdf4j.sparqlbuilder.core.QueryElementCollection

elements

Method Summary

Modifier and Type	Method	Description
Projection	all()	Specify that this projection should select all in-scope expressions
Projection	all(boolean selectAll)	Specify if this projection should select all in-scope expressions or not
Projection	distinct()	Specify this projection to be distinct
Projection	distinct(boolean isDistinct)	Specify if this projection should be distinct or not
String	getQueryString()
Projection	select(Projectable... projectables)	Add expressions for this projection to select

Methods inherited from class org.eclipse.rdf4j.sparqlbuilder.core.QueryElementCollection

addElements, addElements, isEmpty

Methods inherited from class java.lang.Object

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

Method Details

distinct

public Projection distinct()

Specify this projection to be distinct

Returns:

this

See Also:

• SPARQL Distinct modifier

distinct

public Projection distinct(boolean isDistinct)

Specify if this projection should be distinct or not

Parameters:

isDistinct - if this projection should be distinct

Returns:

this

See Also:

• SPARQL Distinct modifier

all

public Projection all()

Specify that this projection should select all in-scope expressions

Returns:

this

See Also:

• SPARQL Select

all

public Projection all(boolean selectAll)

Specify if this projection should select all in-scope expressions or not

Parameters:

selectAll - if this projection should select all expressions

Returns:

this

See Also:

• SPARQL Select

select

public Projection select(Projectable... projectables)

Add expressions for this projection to select

Parameters:

projectables - the projectable expressions to add

Returns:

this

getQueryString

public String getQueryString()

Specified by:

getQueryString in interface QueryElement

Overrides:

getQueryString in class QueryElementCollection<Projectable>

Returns:

the String representing the SPARQL syntax of this element