svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.tilecache / org.gvsig.fmap.dal.tilecache.raster / src / main / java / org / gvsig / raster / tilecache / provider / AbstractTileCacheStructImage.java @ 44831
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package org.gvsig.raster.tilecache.provider; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Set; |
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import java.util.Map.Entry; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.ValidateDataParametersException; |
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import org.gvsig.fmap.dal.raster.RasterQuery; |
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import org.gvsig.fmap.dal.raster.RasterStore; |
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import org.gvsig.fmap.dal.raster.spi.RasterStoreProvider; |
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import org.gvsig.fmap.geom.Geometry.DIMENSIONS; |
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import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.raster.lib.buffer.api.TileStruct; |
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import org.gvsig.raster.lib.buffer.api.exceptions.BufferException; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dispose.Disposable; |
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import org.gvsig.tools.dispose.DisposeUtils; |
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import org.gvsig.tools.dispose.impl.AbstractDisposable; |
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import org.gvsig.tools.dynobject.exception.DynMethodException; |
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import org.gvsig.tools.exception.BaseException; |
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/**
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* @author fdiaz
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*
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*/
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public abstract class AbstractTileCacheStructImage extends AbstractDisposable implements TileCacheStructImage { |
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private static final Logger logger = LoggerFactory.getLogger(AbstractTileCacheStructImage.class); |
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protected RasterStoreProvider innerProvider;
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protected RasterQuery query;
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protected TileStruct tileStruct;
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protected Object colorInterpretation; |
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protected Object legend; |
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protected Object colorTable; |
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protected Map<String, Tile> recentAccededTiles; |
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protected Integer bandNumber = null; |
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protected int[] dataTypes; |
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/**
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* @param innerProvider
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* @param query
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*/
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public AbstractTileCacheStructImage(RasterStoreProvider innerProvider, RasterQuery query) {
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super();
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this.innerProvider = innerProvider;
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this.query = query;
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} |
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/**
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* @param pixelSize
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* @return The appropriate zoom level for the pizelSize
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*/
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@Override
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public int getZoomLvlForPixelSize(double pixelSize) { |
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//FIXME: Elegir el c?digo id?neo
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// Este trozo de c?digo selecciona un zoom superior con lo que,
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// al hacer la interpolaci?n se generar?n p?xeles m?s grandes
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// (y l?neas m?s gruesas)
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// int zoom = 0;
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// Map<Integer, Double> pixelSizePerZoomLevel = tileStruct.getPixelSizePerZoomLevel();
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//
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// SortedSet<Integer> keySet = new TreeSet<>(Collections.reverseOrder());
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// keySet.addAll(pixelSizePerZoomLevel.keySet());
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// Iterator<Integer> iterator = keySet.iterator();
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// while(iterator.hasNext()){
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// zoom = iterator.next();
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// double levelPixelSize = pixelSizePerZoomLevel.get(zoom);
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// if (pixelSize <= levelPixelSize) {
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// return zoom;
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// }
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// }
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//
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// return zoom;
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// Este trozo de c?digo selecciona un zoom inferior con lo que,
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// al hacer la interpolaci?n se perder?n p?xeles
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// repercutiendo en la legibilidad de las leyendas si no se usa una adecuada interpolaci?n
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// (y las l?neas se podr?n ver entrecortadas)
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int zoom = 0; |
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Map<Integer, Double> pixelSizePerZoomLevel = getTileStruct().getPixelSizePerZoomLevel(); |
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for (int i : pixelSizePerZoomLevel.keySet()) { |
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zoom = i; |
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double levelPixelSize = pixelSizePerZoomLevel.get(zoom);
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if (pixelSize >= levelPixelSize) {
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return zoom;
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} |
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} |
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return zoom;
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} |
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/**
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* @throws CloneNotSupportedException
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* @throws ValidateDataParametersException
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* @throws DynMethodException
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* @throws DataException
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* @throws BufferException
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* @throws CreateEnvelopeException
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*
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*/
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protected void fillStoreInfo() { |
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this.bandNumber = this.innerProvider.getBands(); |
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this.dataTypes = new int[this.bandNumber]; |
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for (int i = 0; i < this.bandNumber; i++) { |
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dataTypes[i] = this.innerProvider.getBandDescriptor(i).getDataType();
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} |
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try {
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this.colorInterpretation =
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this.innerProvider.invokeDynMethod(RasterStore.DYNMETHOD_GETCOLORINTERPRETATION_NAME, null); |
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this.colorTable = this.innerProvider.invokeDynMethod(RasterStore.DYNMETHOD_GETCOLORTABLE_NAME, null); |
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this.legend = this.innerProvider.invokeDynMethod(RasterStore.DYNMETHOD_GETLEGEND_NAME, null); |
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} catch (DynMethodException e) {
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logger.warn("Can't fill legend info from store.");
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} |
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} |
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@Override
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public int getBandNumber() { |
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if (this.bandNumber == null) { |
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fillStoreInfo(); |
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} |
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return this.bandNumber; |
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} |
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@Override
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public int[] getDataTypes() { |
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if (this.dataTypes == null) { |
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fillStoreInfo(); |
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} |
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return this.dataTypes; |
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} |
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@Override
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public int getRows(int zoomLevel) { |
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return (int) (Math.round(getEnvelope().getLength(DIMENSIONS.Y) / this.tileStruct.getPixelSizePerZoomLevel().get(zoomLevel))); |
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} |
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@Override
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public int getColumns(int zoomLevel) { |
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return (int) (Math.round(this.getEnvelope().getLength(DIMENSIONS.X) / this.tileStruct.getPixelSizePerZoomLevel().get(zoomLevel))); |
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} |
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@Override
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public Envelope getEnvelope() {
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return this.tileStruct.getEnvelope(); |
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} |
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@Override
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public int getRowsPerTile() { |
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return this.tileStruct.getRowsPerTile(); |
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} |
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@Override
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public int getColumnsPerTile() { |
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return this.tileStruct.getColumnsPerTile(); |
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} |
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@Override
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public String getProviderName() { |
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return this.tileStruct.getProviderName(); |
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} |
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protected String composeKeyForRecentTiles(int zoomLevel, int structRow, int structCol) { |
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StringBuilder builder = new StringBuilder(); |
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builder.append(zoomLevel); |
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builder.append(":");
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builder.append(structCol); |
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builder.append(":");
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builder.append(structRow); |
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return builder.toString();
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} |
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protected void removeOlderTile() { |
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Tile olderTile = null;
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for (Iterator<Tile> iterator = recentAccededTiles.values().iterator(); iterator.hasNext();) { |
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Tile tile = (Tile) iterator.next(); |
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if (olderTile == null || tile.getLastAccess() < olderTile.getLastAccess()) { |
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olderTile = tile; |
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} |
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} |
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if (olderTile != null) { |
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recentAccededTiles.remove(olderTile.getKey()); |
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DisposeUtils.dispose(olderTile); |
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} |
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} |
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@Override
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public Object getColorInterpretation() { |
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if (this.colorInterpretation == null) { |
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fillStoreInfo(); |
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} |
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return this.colorInterpretation; |
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} |
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@Override
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public Object getColorTable() { |
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if (this.colorTable == null) { |
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fillStoreInfo(); |
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} |
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return this.colorTable; |
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} |
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@Override
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public Object getLegend() { |
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if (this.legend == null) { |
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fillStoreInfo(); |
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} |
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return this.legend; |
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} |
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/**
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*
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*/
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@Override
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public void forgetCache(){ |
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this.recentAccededTiles.clear();
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} |
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@Override
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protected void doDispose() throws BaseException { |
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if (recentAccededTiles != null) { |
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Set<Entry<String, Tile>> entrySet = recentAccededTiles.entrySet(); |
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for (Iterator<Entry<String, Tile>> iterator = entrySet.iterator(); iterator.hasNext();) { |
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Entry<String, Tile> entry = (Entry<String, Tile>) iterator.next(); |
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DisposeUtils.dispose(entry.getValue()); |
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} |
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recentAccededTiles.clear(); |
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} |
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DisposeUtils.dispose(innerProvider); |
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innerProvider = null;
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DisposeUtils.dispose((Disposable) tileStruct); |
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tileStruct = null;
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query = null;
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colorInterpretation = null;
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legend = null;
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colorTable = null;
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} |
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protected class Tile extends AbstractDisposable { |
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org.gvsig.raster.lib.buffer.api.Buffer buffer; |
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long lastAccess;
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String key;
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public Tile(org.gvsig.raster.lib.buffer.api.Buffer buffer, String key) { |
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ToolsLocator.getDisposableManager().bind(buffer); |
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this.buffer = buffer;
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this.key = key;
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lastAccess = System.currentTimeMillis();
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} |
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public String getKey() { |
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return key;
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} |
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public org.gvsig.raster.lib.buffer.api.Buffer getBuffer() {
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lastAccess = System.currentTimeMillis();
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return buffer;
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} |
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public long getLastAccess() { |
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return lastAccess;
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} |
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@Override
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protected void finalize() throws Throwable { |
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super.finalize();
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} |
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@Override
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public void doDispose() throws BaseException { |
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DisposeUtils.dispose(buffer); |
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buffer = null;
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} |
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} |
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} |