Package org.eclipse.rdf4j.sparqlbuilder.constraint

Class Expression<T extends Expression<T>>

java.lang.Object

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

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

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

Type Parameters:

T - the type of Expression (ie, Function or Operation). Used to support fluency

All Implemented Interfaces:

Operand, Assignable, Groupable, Orderable, QueryElement

Direct Known Subclasses:

Aggregate, CustomFunction, In, NotIn

public abstract class Expression<T extends Expression<T>>
extends StandardQueryElementCollection<Operand>
implements Operand, Orderable, Groupable, Assignable

A SPARQL expression. Used by filters, having clauses, order and group by clauses, assignments, and as arguments to other expressions.

See Also:

• SPARQL Filters
• SPARQL HAVING
• SPARQL ORDER BY
• SPARQL GROUP BY
• SPARQL Assignments

Field Summary

Fields

Modifier and Type	Field	Description
protected SparqlOperator	operator

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

elements

Method Summary

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

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

getQueryString, printBodyIfEmpty, printNameIfEmpty, resetWrapperMethod, setOperatorName, setOperatorName, setWrapperMethod

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

Methods inherited from interface org.eclipse.rdf4j.sparqlbuilder.core.Assignable

as

Methods inherited from interface org.eclipse.rdf4j.sparqlbuilder.core.Orderable

asc, desc

Methods inherited from interface org.eclipse.rdf4j.sparqlbuilder.core.QueryElement

getQueryString

Field Details

operator

protected SparqlOperator operator

Method Details

parenthesize

public T parenthesize()

Indicate that this expression should be wrapped in parentheses when converted to a query string

Returns:

this

parenthesize

public T parenthesize(boolean parenthesize)

Indicate if this expression should be wrapped in parentheses when converted to a query string

Parameters:

parenthesize -

Returns:

this