svn-gvsig-desktop / trunk / libraries / libRaster / src / org / gvsig / raster / buffer / cache / PageBandBuffer.java @ 27361
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2006 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.raster.buffer.cache; |
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import java.io.IOException; |
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import org.gvsig.raster.buffer.RasterMemoryBuffer; |
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/**
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* Esta clase representa una p?gina de cache. Una p?gina no es m?s que un buffer de datos
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* con todas sus funcionalidades con un uso especifico, el de ser una p?gina.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class PageBandBuffer extends RasterMemoryBuffer{ |
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/**
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* N?mero de banda que corresponde a este PageBandBuffer
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*/
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private int numBand = 0; |
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private HddPage[] hddPages = null; |
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/**
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* Constructor.
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* @param dataType Tipo de dato
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* @param width Ancho de p?gina
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* @param height Alto de p?gina
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* @param bandNr N?mero de bandas
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* @param malloc true para reservar de memoria en el buffer
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*/
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public PageBandBuffer(int dataType, int width, int height, int bandNr, boolean malloc, int numBand){ |
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super(dataType, width, height, bandNr, malloc);
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this.numBand = numBand;
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} |
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/**
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* Asigna la lista de paginas de disco
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* @param hddList Lista de p?ginas de disco
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*/
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public void setHddPages(HddPage[] hddList){ |
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this.hddPages = hddList;
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} |
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/**
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* Carga una p?gina especificada en el par?metro nPag con los datos necesarios.
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* Para esto utiliza el dataSource.
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*
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* @param nPag N?mero de p?gina a cargar
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*/
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public void loadPage(int nPag) throws InterruptedException{ |
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hddPages[nPag].getDataServer(numBand).loadPage(this);
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} |
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/**
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* Salva una p?gina especificada en el par?metro nPag a disco.
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* Para esto utiliza el dataSource
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*
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* @param nPag N?mero de p?gina a salvar
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* @throws IOException
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*/
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public void savePage(int nPag) throws IOException, InterruptedException { |
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hddPages[nPag].getDataServer(numBand).savePage(this);
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} |
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} |