/*
* Copyright (c) 2010 Jeff Schnitzer.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.googlecode.batchfb;
import java.util.List;
import com.googlecode.batchfb.err.FacebookException;
/**
* <p>Adds the ability to enqueue the previous and next pages of Facebook's
* paginated data structures.</p>
*
* @see FacebookBatcher#paged(String, Class, Param...)
* @author Jeff Schnitzer
*/
public interface PagedLater<T> extends Later<List<T>> {
/**
* Executes the current batch (if necessary) and enqueues a request for the previous page of data.
* If there is no previous page of data, this method will return null.
*
* @throws FacebookException if there was an error executing the original request.
*/
PagedLater<T> previous() throws FacebookException;
/**
* Executes the current batch (if necessary) and enqueues a request for the next page of data.
* If there is no next page of data, this method will return null.
*
* @throws FacebookException if there was an error executing the original request.
*/
PagedLater<T> next() throws FacebookException;
}
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