org.openrdf.sesame.sail.query
Class ConstructQuery

java.lang.Object
  org.openrdf.sesame.sail.query.GraphPatternQuery
      org.openrdf.sesame.sail.query.ConstructQuery

All Implemented Interfaces:

Query

public class ConstructQuery

extends GraphPatternQuery

Class representing a construct-from-where query. The conceptual result of a ConstructQuery, a set of triples, is represented by QueryAnswers with three values: the subject, predicate and object.

Author:

Arjohn Kampman

Constructor Summary

ConstructQuery(boolean distinct, int offset, int limit, List projection, GraphPattern graphPattern)

ConstructQuery(boolean distinct, List projection, GraphPattern graphPattern)

Method Summary

String[]	getColumnHeaders() Gets the headers for the results table that is produced by this query.
TriplePattern[]	getProjection()
void	getProjectionVariables(Collection variables) Gets all variables that are used in the projection of this GraphPatternQuery.
void	setProjection(List projection)
void	setProjection(TriplePattern[] projection)
String	toString()

Methods inherited from class org.openrdf.sesame.sail.query.GraphPatternQuery

evaluate, getGraphPattern, getLimit, getOffset, getVariables, hasLimit, hasOffset, isDistinct, setDistinct, setGraphPattern, setLimit, setOffset

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ConstructQuery

public ConstructQuery(boolean distinct,
                      List projection,
                      GraphPattern graphPattern)

ConstructQuery

public ConstructQuery(boolean distinct,
                      int offset,
                      int limit,
                      List projection,
                      GraphPattern graphPattern)

Method Detail

getProjection

public TriplePattern[] getProjection()

setProjection

public void setProjection(List projection)

setProjection

public void setProjection(TriplePattern[] projection)

getProjectionVariables

public void getProjectionVariables(Collection variables)

Description copied from class: GraphPatternQuery

Gets all variables that are used in the projection of this GraphPatternQuery.

Specified by:

getProjectionVariables in class GraphPatternQuery

Parameters:

variables - A Collection to add the Var objects to.

getColumnHeaders

public String[] getColumnHeaders()

Description copied from interface: Query

Gets the headers for the results table that is produced by this query.

Returns:

An array containing as much strings as there are values in each query result.

toString

public String toString()