org.openrdf.sesame.sail.query
Class OffsetFilter

java.lang.Object
  org.openrdf.sesame.sail.query.OffsetFilter

All Implemented Interfaces:

QueryAnswerListener

public class OffsetFilter

extends Object

implements QueryAnswerListener

A QueryAnswerListener that handles any OFFSET settings on a query. This class drops the first OFFSET results, but forwards the rest.

Constructor Summary

OffsetFilter(QueryAnswerListener l, int offset)
Creates a new OffsetFilter.

Method Summary

void	clear() Method called when the query engine has finished or aborted the query evaluation, signaling that the listener can/should clear any recorded and query-specific information.
boolean	queryAnswer(QueryAnswer qa) Reports a query answer to the listener.

Methods inherited from class java.lang.Object

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

Constructor Detail

OffsetFilter

public OffsetFilter(QueryAnswerListener l,
                    int offset)

Creates a new OffsetFilter.

Parameters:

l - The QueryAnswerListener that will receive the filtered query results.

Method Detail

queryAnswer

public boolean queryAnswer(QueryAnswer qa)
                    throws IOException

Description copied from interface: QueryAnswerListener

Reports a query answer to the listener.

Specified by:

queryAnswer in interface QueryAnswerListener

Parameters:

qa - The query answer.

Returns:

A flag indicating whether the query engine should continue evaluating the (sub-)query.

Throws:

IOException

clear

public void clear()

Description copied from interface: QueryAnswerListener

Method called when the query engine has finished or aborted the query evaluation, signaling that the listener can/should clear any recorded and query-specific information.

Specified by:

clear in interface QueryAnswerListener