org.eclipse.rdf4j.sparqlbuilder.graphpattern

Class SubSelect

java.lang.Object

org.eclipse.rdf4j.sparqlbuilder.core.query.Query<SubSelect>

org.eclipse.rdf4j.sparqlbuilder.graphpattern.SubSelect

All Implemented Interfaces:

QueryElement, GraphPattern

public class SubSelect
extends Query<SubSelect>
implements GraphPattern

A SPARQL subquery

See Also:

SPARQL Subquery

Field Summary

Fields inherited from class org.eclipse.rdf4j.sparqlbuilder.core.query.Query

bnodeCount, from, groupBy, having, limit, LIMIT, offset, OFFSET, orderBy, varCount, where

Constructor Summary

Constructors

Constructor and Description
SubSelect()

Method Summary

Modifier and Type	Method and Description
SubSelect	all() Specify that this query's projection should select all in-scope expressions
SubSelect	all(boolean selectAll) Specify if this query's projection should select all in-scope expressions or not.
SubSelect	distinct() Specify the query's projection to be distinct
SubSelect	distinct(boolean isDistinct) Specify if the query's projection should be distinct or not
protected String	getQueryActionString()
String	getQueryString()
boolean	isEmpty()
SubSelect	select(Projectable... projectables) Add expressions to the query's projection
SubSelect	select(Projection select) Set this query's projection

Methods inherited from class org.eclipse.rdf4j.sparqlbuilder.core.query.Query

bNode, from, from, groupBy, groupBy, having, having, limit, offset, orderBy, orderBy, var, where, where

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.sparqlbuilder.graphpattern.GraphPattern

and, filter, filterExists, filterExists, filterNotExists, from, minus, optional, optional, union

Constructor Detail

SubSelect

public SubSelect()

Method Detail

distinct

public SubSelect distinct()

Specify the query's projection to be distinct

Returns:

this

See Also:

Projection.distinct()

distinct

public SubSelect distinct(boolean isDistinct)

Specify if the query's projection should be distinct or not

Parameters:

isDistinct - if this query's projection should be distinct

Returns:

this

See Also:

Projection.distinct(boolean)

all

public SubSelect all()

Specify that this query's projection should select all in-scope expressions

NOTE: setting this takes precedence over any expressions added to the projection via select(Projectable...) when printing

Returns:

this

See Also:

Projection.all()

all

public SubSelect all(boolean selectAll)

Specify if this query's projection should select all in-scope expressions or not.

NOTE: if called with true, this setting will take precedence over any expressions added to the projection via select(Projectable...) when printing

Parameters:

selectAll - if all in-scope expressions should be selected

Returns:

this

See Also:

Projection.all(boolean)

select

public SubSelect select(Projectable... projectables)

Add expressions to the query's projection

NOTE: if SELECT * has been specified (by all() or calling all(boolean) with true), that will take precedence over specified expressions when converting to string via getQueryString()

Parameters:

projectables - expressions to add

Returns:

this

See Also:

Projection.select(Projectable...)

select

public SubSelect select(Projection select)

Set this query's projection

Parameters:

select - the Projection to set

Returns:

this

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface GraphPattern

Returns:

if this pattern is a collection of GraphPatterns (ie., Group or Alternative patterns), returns if the collection contains any patterns

getQueryActionString

protected String getQueryActionString()

Specified by:

getQueryActionString in class Query<SubSelect>

getQueryString

public String getQueryString()

Specified by:

getQueryString in interface QueryElement

Overrides:

getQueryString in class Query<SubSelect>

Returns:

the String representing the SPARQL syntax of this element