eworks.RQL.model
Class Projection

java.lang.Object
  eworks.RQL.model.Projection

public class Projection

extends Object

Represents a single component of a ProjectionList, that is a certain variable which is part of a query's result (other variables may be bound as well, but will not be returned as the query's result). This aspect and terminology is copied from database query languages like SQL.

Version:

1.00 (2003-11-03)

Author:

Fabian Wleklinski (fabian@wleklinski.de)

See Also:

ProjectionList, The RDF Query Language (RQL)

Constructor Summary

Projection(Variable variable)
Creates a new projection with a certain variable to encapsulate.

Method Summary

Variable	getVariable() Returns this projection's encapsulated variable.
String	toString() Returns this projection's string representation.

Methods inherited from class java.lang.Object

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

Constructor Detail

Projection

public Projection(Variable variable)

Creates a new projection with a certain variable to encapsulate.

Parameters:

variable - The variable to encapsulate.

Method Detail

getVariable

public Variable getVariable()

Returns this projection's encapsulated variable.

Returns:

This projection's encapsulated variable.

toString

public String toString()

Returns this projection's string representation.

Returns:

This projection's string representation.