gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / buffer / cache / RasterCache.java @ 2623
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.buffer.cache; |
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import java.io.File; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import org.gvsig.fmap.dal.coverage.RasterLibrary; |
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import org.gvsig.fmap.dal.coverage.RasterLocator; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.Band; |
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import org.gvsig.fmap.dal.coverage.util.FileUtils; |
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import org.gvsig.raster.impl.buffer.RasterBand; |
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import org.gvsig.raster.impl.buffer.RasterBuffer; |
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/*
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* TODO: OPTIMIZACION: Trabajo de optimizaci?n en la velocidad e acceso a cach?.
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* TODO: FUNCIONALIDAD: Acabar de implementar los m?todos de acceso a datos, intercambio de bandas, etc...
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*/
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/**
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* Esta clase representa un buffer de datos cacheado. El estar en cache significa que
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* solo una parte de los datos estar?n en memoria y que gestiona, dependiendo de las
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* peticiones, que partes hay que cargar a memoria y en que momento. Para esto el buffer
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* no se llena de golpe sino que utiliza una clase que sirve los datos desde la fuente.
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* Esta clase servidora de datos debe implementar el interfaz ICacheDatasetSourcepara
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* servir datos de la forma requerida.
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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 RasterCache extends RasterBuffer { |
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private Cache cache = null; |
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private LRUAlgorithm lru = null; |
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private int lastLine = -1; |
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|
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//TODO: FUNCIONALIDAD: Intercambio de bandas para el buffer cacheado
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public class CacheBand extends RasterBand { |
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public ICacheDataSource[] cacheDataServer = null; |
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public CacheBand(int height, int width){ |
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super(height, width);
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} |
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public Object getLine(int line) { |
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return null; |
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} |
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public void setLine(int line, Object value) { |
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} |
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public Object getBuf() { |
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return null; |
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} |
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public void setFileName(int numBand){ |
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for (int i = 0; i < cacheDataServer.length; i++) |
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((CacheDataServer)cacheDataServer[i]).setName(null, numBand, i);
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} |
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public void dispose() { |
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for (int i = 0; i < cacheDataServer.length; i++) { |
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cacheDataServer[i] = null;
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} |
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cacheDataServer = null;
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} |
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} |
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/**
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* Constructor. Asigna las variables de inicializaci?n y crea la estructura de
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* la cach? con los datos pasados.
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* @param dataType Tipo de dato del buffer
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* @param width Ancho del buffer
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* @param height Alto del buffer
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* @param nBands N?mero de bandas del buffer
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*/
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public RasterCache(int dataType, int width, int height, int nBands){ |
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cache = new Cache(nBands, dataType, width, height);
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lru = new LRUAlgorithm(cache);
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this.dataType = dataType;
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this.width = width;
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this.height = height;
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this.nBands = nBands;
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} |
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/**
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* Limpia los trozos de cach? en disco. Despu?s del llamar a este
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* m?todo no puede volver a usarse esta cach?.
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* @throws IOException
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*/
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public void clearCache() throws IOException { |
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cache.clearCache(this.nBands);
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} |
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public boolean isBandSwitchable(){ |
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return true; |
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} |
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public void malloc(int dataType, int width, int height, int bandNr) { |
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} |
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/**
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* Obtiene la cach?
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* @return
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*/
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public Cache getCache() {
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return cache;
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} |
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/**
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* Asigna la cache
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* @param cache
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*/
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public void setCache(Cache cache) { |
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this.cache = cache;
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this.lru.setCache(cache);
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} |
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//*********************************************************
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public byte[][] getLineByte(int line) { |
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if (exists(line)) {
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return cache.getAccessPage()
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.getLineByte((line & cache.getOffset())); |
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} |
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return null; |
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} |
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public short[][] getLineShort(int line) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineShort(
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(line & cache.getOffset())); |
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} |
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return null; |
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} |
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public int[][] getLineInt(int line) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineInt((line & cache.getOffset()));
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} |
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return null; |
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} |
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public float[][] getLineFloat(int line) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFloat(
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(line & cache.getOffset())); |
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} |
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return null; |
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} |
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public double[][] getLineDouble(int line) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineDouble(
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(line & cache.getOffset())); |
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} |
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return null; |
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} |
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//*********************************************************
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public void setLineByte(byte[][] data, int line) { |
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if (exists(line)) {
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cache.getAccessPage().setLineByte(data, (line & cache.getOffset())); |
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} |
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} |
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public void setLineShort(short[][] data, int line) { |
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if (exists(line)) {
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cache.getAccessPage() |
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.setLineShort(data, (line & cache.getOffset())); |
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} |
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} |
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public void setLineInt(int[][] data, int line) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInt(data, (line & cache.getOffset())); |
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} |
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} |
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public void setLineFloat(float[][] data, int line) { |
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if (exists(line)) {
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cache.getAccessPage() |
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.setLineFloat(data, (line & cache.getOffset())); |
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} |
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} |
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public void setLineDouble(double[][] data, int line) { |
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if (exists(line)) {
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cache.getAccessPage().setLineDouble(data, (line & cache.getOffset())); |
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} |
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} |
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//*********************************************************
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public byte[] getLineFromBandByte(int line, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFromBandByte(
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(line & cache.getOffset()), band); |
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} |
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return null; |
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} |
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public short[] getLineFromBandShort(int line, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFromBandShort(
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(line & cache.getOffset()), band); |
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} |
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return null; |
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} |
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public int[] getLineFromBandInt(int line, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFromBandInt(
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(line & cache.getOffset()), band); |
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} |
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return null; |
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} |
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public float[] getLineFromBandFloat(int line, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFromBandFloat(
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(line & cache.getOffset()), band); |
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} |
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return null; |
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} |
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public double[] getLineFromBandDouble(int line, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getLineFromBandDouble(
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(line & cache.getOffset()), band); |
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} |
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return null; |
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} |
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//*********************************************************
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public void setLineInBandByte(byte[] data, int line, int band) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInBandByte(data, |
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(line & cache.getOffset()), band); |
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} |
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} |
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public void setLineInBandShort(short[] data, int line, int band) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInBandShort(data, |
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(line & cache.getOffset()), band); |
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} |
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} |
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public void setLineInBandInt(int[] data, int line, int band) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInBandInt(data, |
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(line & cache.getOffset()), band); |
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} |
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} |
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public void setLineInBandFloat(float[] data, int line, int band) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInBandFloat(data, |
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(line & cache.getOffset()), band); |
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} |
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} |
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public void setLineInBandDouble(double[] data, int line, int band) { |
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if (exists(line)) {
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cache.getAccessPage().setLineInBandDouble(data, |
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(line & cache.getOffset()), band); |
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} |
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} |
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//*********************************************************
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public byte getElemByte(int line, int col, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getElemByte(
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(line & cache.getOffset()), col, band); |
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} |
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return getNoDataValue().isDefined() ? getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue; // No leemos el dato |
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} |
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public short getElemShort(int line, int col, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getElemShort(
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(line & cache.getOffset()), col, band); |
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} |
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return getNoDataValue().isDefined() ? getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue; // No leemos el dato |
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} |
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public int getElemInt(int line, int col, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getElemInt((line & cache.getOffset()),
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col, band); |
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} |
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return getNoDataValue().isDefined() ? getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue; // No leemos el dato |
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} |
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public float getElemFloat(int line, int col, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getElemFloat(
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(line & cache.getOffset()), col, band); |
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} |
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return getNoDataValue().isDefined() ? getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue; // No leemos el dato |
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} |
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public double getElemDouble(int line, int col, int band) { |
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if (exists(line)) {
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return cache.getAccessPage().getElemDouble(
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(line & cache.getOffset()), col, band); |
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} |
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return getNoDataValue().isDefined() ? getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue; // No leemos el dato |
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} |
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//*********************************************************
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public void setElem(int line, int col, int band, byte data) { |
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if (exists(line)) {
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cache.getAccessPage().setElem((line & cache.getOffset()), col, |
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band, data); |
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} |
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} |
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public void setElem(int line, int col, int band, short data) { |
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if (exists(line)) {
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cache.getAccessPage().setElem((line & cache.getOffset()), col, |
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band, data); |
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} |
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} |
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public void setElem(int line, int col, int band, int data) { |
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if (exists(line)) {
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cache.getAccessPage().setElem((line & cache.getOffset()), col, |
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band, data); |
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} |
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} |
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public void setElem(int line, int col, int band, float data) { |
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if (exists(line)) {
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cache.getAccessPage().setElem((line & cache.getOffset()), col, |
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band, data); |
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} |
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} |
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public void setElem(int line, int col, int band, double data) { |
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if (exists(line)) {
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cache.getAccessPage().setElem((line & cache.getOffset()), col, |
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band, data); |
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} |
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} |
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//*********************************************************
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public void getElemByte(int line, int col, byte[] data) { |
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if (!exists(line)) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = getNoDataValue().isDefined() ? getNoDataValue().getValue().byteValue() : RasterLibrary.defaultByteNoDataValue; |
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} |
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cache.getAccessPage().getElemByte((line & cache.getOffset()), col, data); |
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} |
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public void getElemShort(int line, int col, short[] data) { |
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if (!exists(line)) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = getNoDataValue().isDefined() ? getNoDataValue().getValue().shortValue() : RasterLibrary.defaultShortNoDataValue; |
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} |
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cache.getAccessPage().getElemShort((line & cache.getOffset()), col, data); |
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} |
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public void getElemInt(int line, int col, int[] data) { |
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if (!exists(line)) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = getNoDataValue().isDefined() ? getNoDataValue().getValue().intValue() : RasterLibrary.defaultIntegerNoDataValue; |
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} |
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cache.getAccessPage().getElemInt((line & cache.getOffset()), col, data); |
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} |
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|
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public void getElemFloat(int line, int col, float[] data) { |
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if (!exists(line)) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = getNoDataValue().isDefined() ? getNoDataValue().getValue().floatValue() : RasterLibrary.defaultFloatNoDataValue;; |
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} |
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cache.getAccessPage().getElemFloat((line & cache.getOffset()), col, data); |
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} |
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public void getElemDouble(int line, int col, double[] data) { |
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if (!exists(line)) {
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for (int iBand = 0; iBand < data.length; iBand++) |
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data[iBand] = getNoDataValue().isDefined() ? getNoDataValue().getValue().doubleValue() : RasterLibrary.defaultDoubleNoDataValue;; |
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} |
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cache.getAccessPage().getElemDouble((line & cache.getOffset()), col, data); |
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} |
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//*********************************************************
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private boolean exists(int line) { |
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// Store the last line checked so we don't check it again for each
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// pixel of the same line
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if (line != lastLine) {
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try {
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lru.cacheAccess(line, false);
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this.lastLine = line;
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} catch (InvalidPageNumberException e) {
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return false; |
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} |
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} |
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return true; |
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} |
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public void setElemByte(int line, int col, byte[] data) { |
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if (exists(line)) {
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cache.getAccessPage().setElemByte((line & cache.getOffset()), col, |
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data); |
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} |
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} |
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public void setElemShort(int line, int col, short[] data) { |
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if (exists(line)) {
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cache.getAccessPage().setElemShort((line & cache.getOffset()), col, |
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data); |
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} |
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} |
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public void setElemInt(int line, int col, int[] data) { |
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if (exists(line)) {
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cache.getAccessPage().setElemInt((line & cache.getOffset()), col, |
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data); |
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} |
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} |
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public void setElemFloat(int line, int col, float[] data) { |
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if (exists(line)) {
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cache.getAccessPage().setElemFloat((line & cache.getOffset()), col, |
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data); |
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} |
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} |
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public void setElemDouble(int line, int col, double[] data) { |
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if (exists(line)) {
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cache.getAccessPage().setElemDouble((line & cache.getOffset()), |
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col, data); |
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} |
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} |
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public Buffer getBandBuffer(int Band){ |
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RasterCache rasterCache = new RasterCache(getDataType(), getWidth(), getHeight(), 1); |
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CacheStruct cs = new CacheStruct();
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cs.setHPag(cache.getCacheStruct().getHPag()); |
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cs.setOffset(cache.getCacheStruct().getOffset()); |
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cs.setNPags(cache.getCacheStruct().getNPags()); |
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cs.setNBands(1);
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cs.setNGroups(cache.getCacheStruct().getNGroups()); |
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cs.setBitsPag(cache.getCacheStruct().getBitsPag()); |
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cs.setNTotalPags((int)(getHeight() / cache.getCacheStruct().getHPag()));
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cs.setDataType(cache.getCacheStruct().getDataType()); |
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Cache c = new Cache(cs, getWidth());
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rasterCache.setCache(c); |
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Band band = getBand(Band); |
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rasterCache.assignBand(0, band);
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return rasterCache;
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} |
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|
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public void replicateBand(int orig, int dest) { |
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} |
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|
| 492 |
public void switchBands(int[] bandPosition){ |
| 493 |
|
| 494 |
} |
| 495 |
|
| 496 |
//*********************************************************
|
| 497 |
|
| 498 |
public void assign(int band, byte value) { |
| 499 |
for(int line = 0; line < height; line ++){ |
| 500 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
| 501 |
for(int col = 0; col < width; col ++){ |
| 502 |
try {
|
| 503 |
if(beginLine){
|
| 504 |
lru.cacheAccess(line, false);
|
| 505 |
beginLine = false;
|
| 506 |
} |
| 507 |
} catch (InvalidPageNumberException e) {return;} |
| 508 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
| 509 |
} |
| 510 |
} |
| 511 |
} |
| 512 |
|
| 513 |
public void assign(int band, short value) { |
| 514 |
for(int line = 0; line < height; line ++){ |
| 515 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
| 516 |
for(int col = 0; col < width; col ++){ |
| 517 |
try {
|
| 518 |
if(beginLine){
|
| 519 |
lru.cacheAccess(line, false);
|
| 520 |
beginLine = false;
|
| 521 |
} |
| 522 |
} catch (InvalidPageNumberException e) {return;} |
| 523 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
| 524 |
} |
| 525 |
} |
| 526 |
} |
| 527 |
|
| 528 |
public void assign(int band, int value) { |
| 529 |
for(int line = 0; line < height; line ++){ |
| 530 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
| 531 |
for(int col = 0; col < width; col ++){ |
| 532 |
try {
|
| 533 |
if(beginLine){
|
| 534 |
lru.cacheAccess(line, false);
|
| 535 |
beginLine = false;
|
| 536 |
} |
| 537 |
} catch (InvalidPageNumberException e) {return;} |
| 538 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
| 539 |
} |
| 540 |
} |
| 541 |
} |
| 542 |
|
| 543 |
public void assign(int band, float value) { |
| 544 |
for(int line = 0; line < height; line ++){ |
| 545 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
| 546 |
for(int col = 0; col < width; col ++){ |
| 547 |
try {
|
| 548 |
if(beginLine){
|
| 549 |
lru.cacheAccess(line, false);
|
| 550 |
beginLine = false;
|
| 551 |
} |
| 552 |
} catch (InvalidPageNumberException e) {return;} |
| 553 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
| 554 |
} |
| 555 |
} |
| 556 |
} |
| 557 |
|
| 558 |
public void assign(int band, double value) { |
| 559 |
for(int line = 0; line < height; line ++){ |
| 560 |
boolean beginLine = true; //Para acelerar solo comprobar? si la p?gina est? en cach? cada vez que empieza una l?nea |
| 561 |
for(int col = 0; col < width; col ++){ |
| 562 |
try {
|
| 563 |
if(beginLine){
|
| 564 |
lru.cacheAccess(line, false);
|
| 565 |
beginLine = false;
|
| 566 |
} |
| 567 |
} catch (InvalidPageNumberException e) {return;} |
| 568 |
cache.getAccessPage().setElem((line & cache.getOffset()), col, band, value); |
| 569 |
} |
| 570 |
} |
| 571 |
} |
| 572 |
|
| 573 |
public Buffer cloneBuffer(){ |
| 574 |
return null; |
| 575 |
} |
| 576 |
|
| 577 |
public void interchangeBands(int band1, int band2) { |
| 578 |
Band b1 = getBand(band1); |
| 579 |
Band b2 = getBand(band2); |
| 580 |
|
| 581 |
try {
|
| 582 |
cache.assignBand(band2, ((CacheBand)b1).cacheDataServer); |
| 583 |
cache.assignBand(band1, ((CacheBand)b2).cacheDataServer); |
| 584 |
} catch (IOException e) { |
| 585 |
e.printStackTrace(); |
| 586 |
} |
| 587 |
|
| 588 |
} |
| 589 |
|
| 590 |
public void mallocOneBand(int dataType, int width, int height, int band) { |
| 591 |
|
| 592 |
} |
| 593 |
|
| 594 |
public Band getBand(int band) { |
| 595 |
CacheBand cb = new CacheBand(getHeight(), getWidth());
|
| 596 |
cb.cacheDataServer = new CacheDataServer[cache.getNTotalPags()];
|
| 597 |
|
| 598 |
try {
|
| 599 |
cache.resetCache(); |
| 600 |
} catch (IOException e) { |
| 601 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
| 602 |
return null; |
| 603 |
} |
| 604 |
for (int iPage = 0; iPage < cache.getNTotalPags(); iPage++) |
| 605 |
cb.cacheDataServer[iPage] = cache.getHddPage(iPage, band); |
| 606 |
|
| 607 |
return cb;
|
| 608 |
} |
| 609 |
|
| 610 |
public void copyBand(int nBand, Band band) { |
| 611 |
FileUtils file = RasterLocator.getManager().getFileUtils(); |
| 612 |
if(band instanceof CacheBand){ |
| 613 |
CacheBand cb = new CacheBand(band.getHeight(), band.getWidth());
|
| 614 |
cb.cacheDataServer = new CacheDataServer[((CacheBand)band).cacheDataServer.length];
|
| 615 |
|
| 616 |
for (int iPage = 0; iPage < cb.cacheDataServer.length; iPage++) { |
| 617 |
cb.cacheDataServer[iPage] = new CacheDataServer(null, nBand, iPage); |
| 618 |
String path = ((CacheBand)band).cacheDataServer[iPage].getPath();
|
| 619 |
File f = new File(path); |
| 620 |
if(f.exists()){
|
| 621 |
try {
|
| 622 |
file.copyFile(path, cb.cacheDataServer[iPage].getPath()); |
| 623 |
} catch (FileNotFoundException e) { |
| 624 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
| 625 |
e.printStackTrace(); |
| 626 |
} catch (IOException e) { |
| 627 |
e.printStackTrace(); |
| 628 |
} |
| 629 |
} |
| 630 |
} |
| 631 |
try {
|
| 632 |
cache.deleteBand(nBand); |
| 633 |
cache.assignBand(nBand, cb.cacheDataServer); |
| 634 |
} catch (IOException e) { |
| 635 |
e.printStackTrace(); |
| 636 |
} |
| 637 |
|
| 638 |
} |
| 639 |
} |
| 640 |
|
| 641 |
public void assignBand(int nBand, Band band) { |
| 642 |
if(band instanceof CacheBand) { |
| 643 |
//((CacheBand)band).setFileName(nBand);
|
| 644 |
try {
|
| 645 |
cache.deleteBand(nBand); |
| 646 |
cache.assignBand(nBand, ((CacheBand)band).cacheDataServer); |
| 647 |
} catch (IOException e) { |
| 648 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
| 649 |
return;
|
| 650 |
} |
| 651 |
|
| 652 |
} |
| 653 |
} |
| 654 |
|
| 655 |
public Band createBand(byte defaultValue) { |
| 656 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
| 657 |
Band band = null;
|
| 658 |
try {
|
| 659 |
band = createBand(pageBuffer); |
| 660 |
} catch (IOException e) { |
| 661 |
return null; |
| 662 |
} |
| 663 |
loadPage(new Byte(defaultValue), pageBuffer); |
| 664 |
return band;
|
| 665 |
} |
| 666 |
|
| 667 |
public void assignBandToNotValid(int Band) { |
| 668 |
PageBandBuffer pageBuffer = new PageBandBuffer(getDataType(), getWidth(), cache.getHPag(), 1, true, 0); |
| 669 |
|
| 670 |
switch(getDataType()){
|
| 671 |
case Buffer.TYPE_BYTE: loadPage(new Byte((byte)getNotValidValue()), pageBuffer);break; |
| 672 |
case Buffer.TYPE_SHORT: loadPage(new Short((short)getNotValidValue()), pageBuffer);break; |
| 673 |
case Buffer.TYPE_INT: loadPage(new Integer((int)getNotValidValue()), pageBuffer);break; |
| 674 |
case Buffer.TYPE_FLOAT: loadPage(new Float((float)getNotValidValue()), pageBuffer);break; |
| 675 |
case Buffer.TYPE_DOUBLE: loadPage(new Double((double)getNotValidValue()), pageBuffer);break; |
| 676 |
} |
| 677 |
|
| 678 |
try {
|
| 679 |
CacheBand cb = (CacheBand)createBand(pageBuffer); |
| 680 |
cb.setFileName(Band); |
| 681 |
assignBand(Band, cb); |
| 682 |
} catch (IOException e) { |
| 683 |
//TODO: EXCEPCIONES: Modificar el manejo de excepciones de RasterBuffer para q lance las apropiadas con cach?
|
| 684 |
e.printStackTrace(); |
| 685 |
} |
| 686 |
} |
| 687 |
|
| 688 |
/**
|
| 689 |
* Creaci?n de una banda a partir de una pagina de cache cargada con datos.
|
| 690 |
* @param pageBuffer Pagina de cache cargada de datos
|
| 691 |
* @param numBand N?mero de banda a la que representa
|
| 692 |
* @return Band
|
| 693 |
* @throws IOException
|
| 694 |
*/
|
| 695 |
private Band createBand(PageBandBuffer pageBuffer) throws IOException{ |
| 696 |
CacheDataServer[] ds = new CacheDataServer[cache.getNTotalPags()]; |
| 697 |
for (int i = 0; i < cache.getNTotalPags(); i++) { |
| 698 |
ds[i] = new CacheDataServer(null, 0, i); |
| 699 |
ds[i].savePage(pageBuffer); |
| 700 |
} |
| 701 |
CacheBand band = new CacheBand(getHeight(), getWidth());
|
| 702 |
band.cacheDataServer = ds; |
| 703 |
return band;
|
| 704 |
} |
| 705 |
|
| 706 |
/**
|
| 707 |
* Carga la p?gina con el valor pasado por par?metro. El valor ser? del mismo tipo de dato
|
| 708 |
* que el buffer actual.
|
| 709 |
* @param value Valor a inicializar
|
| 710 |
* @param pageBuffer P?gina
|
| 711 |
*/
|
| 712 |
private void loadPage(Object value, PageBandBuffer pageBuffer){ |
| 713 |
switch(getDataType()){
|
| 714 |
case Buffer.TYPE_BYTE: for(int i = 0 ; i < getWidth(); i ++) |
| 715 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
| 716 |
pageBuffer.setElem(j, i, 0, ((Byte)value).byteValue()); |
| 717 |
break;
|
| 718 |
case Buffer.TYPE_SHORT: for(int i = 0 ; i < getWidth(); i ++) |
| 719 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
| 720 |
pageBuffer.setElem(j, i, 0, ((Short)value).shortValue()); |
| 721 |
break;
|
| 722 |
case Buffer.TYPE_INT: for(int i = 0 ; i < getWidth(); i ++) |
| 723 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
| 724 |
pageBuffer.setElem(j, i, 0, ((Integer)value).intValue()); |
| 725 |
break;
|
| 726 |
case Buffer.TYPE_FLOAT:for(int i = 0 ; i < getWidth(); i ++) |
| 727 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
| 728 |
pageBuffer.setElem(j, i, 0, ((Float)value).floatValue()); |
| 729 |
break;
|
| 730 |
case Buffer.TYPE_DOUBLE:for(int i = 0 ; i < getWidth(); i ++) |
| 731 |
for(int j = 0 ; j < cache.getHPag(); j ++) |
| 732 |
pageBuffer.setElem(j, i, 0, ((Double)value).doubleValue()); |
| 733 |
break;
|
| 734 |
} |
| 735 |
} |
| 736 |
|
| 737 |
public boolean isReadOnlyBuffer() { |
| 738 |
return false; |
| 739 |
} |
| 740 |
|
| 741 |
public boolean isCached() { |
| 742 |
return true; |
| 743 |
} |
| 744 |
|
| 745 |
public int getBlockHeight() { |
| 746 |
return cache.getHPag();
|
| 747 |
} |
| 748 |
|
| 749 |
public void dispose() { |
| 750 |
if(cache != null) { |
| 751 |
if(cache.getAccessPage() != null) |
| 752 |
cache.getAccessPage().dispose(); |
| 753 |
for (int i = 0; i < cache.getNPags(); i++) { |
| 754 |
if(cache.getPageBufferFromNumberCachePage(i) != null) |
| 755 |
cache.getPageBufferFromNumberCachePage(i).dispose(); |
| 756 |
} |
| 757 |
try {
|
| 758 |
clearCache(); |
| 759 |
} catch (IOException e) { |
| 760 |
} |
| 761 |
cache = null;
|
| 762 |
} |
| 763 |
lru = null;
|
| 764 |
} |
| 765 |
|
| 766 |
protected void finalize() throws Throwable { |
| 767 |
cache = null;
|
| 768 |
lru = null;
|
| 769 |
super.finalize();
|
| 770 |
} |
| 771 |
} |