root / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / ICacheDataSource.java @ 11074
History | View | Annotate | Download (2.17 KB)
1 |
|
---|---|
2 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
3 |
*
|
4 |
* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 2
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
19 |
*/
|
20 |
package org.gvsig.raster.buffer.cache; |
21 |
|
22 |
import java.io.IOException; |
23 |
|
24 |
/**
|
25 |
* Interfaz que debe implementar una fuente de datos de un cache. Las fuentes
|
26 |
* de datos deben interpretar la estructura de la cache para que cuando se les
|
27 |
* solicite una p?gina de la cach? sepan que extent de la fuente de datos deben
|
28 |
* cargar en el buffer.
|
29 |
*
|
30 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
31 |
*
|
32 |
*/
|
33 |
public interface ICacheDataSource{ |
34 |
/**
|
35 |
* Carga una p?gina especificada en el par?metro nPag con los datos necesarios. La
|
36 |
* petici?n que ha de hacerse se calcula previamente con la estructura de la cach?.
|
37 |
*
|
38 |
* @param nPag N?mero de p?gina a cargar
|
39 |
* @param pageBuffer Buffer de datos a cargar.
|
40 |
*/
|
41 |
public void loadPage(PageBandBuffer pageBuffer); |
42 |
|
43 |
/**
|
44 |
* Salva una p?gina especificada en el par?metro nPag a disco. La
|
45 |
* petici?n que ha de hacerse se calcula previamente con la estructura de la cach?.
|
46 |
*
|
47 |
* @param nPag N?mero de p?gina a salvar
|
48 |
* @param pageBuffer Buffer de datos a salvar.
|
49 |
* @throws IOException
|
50 |
*/
|
51 |
public void savePage(PageBandBuffer pageBuffer)throws IOException; |
52 |
|
53 |
/**
|
54 |
* Elimina la fuente de datos de disco
|
55 |
* @throws IOException
|
56 |
*/
|
57 |
public void delete()throws IOException; |
58 |
|
59 |
/**
|
60 |
* Obtiene la ruta a la fuente de datos
|
61 |
* @return Cadena con la ruta a la fuente de datos
|
62 |
*/
|
63 |
public String getPath(); |
64 |
} |