Revision 938 org.gvsig.raster.postgis/trunk/org.gvsig.raster.postgis/org.gvsig.raster.postgis.io/src/main/java/org/gvsig/raster/postgis/io/PostGISRasterProvider.java
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package org.gvsig.raster.postgis.io; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataStore; |
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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.BandList; |
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import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
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import org.gvsig.fmap.dal.coverage.exception.NotSupportedExtensionException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.serverexplorer.db.DBServerExplorer; |
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import org.gvsig.fmap.dal.spi.DataManagerProviderServices; |
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import org.gvsig.fmap.dal.store.db.DBStoreParameters; |
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import org.gvsig.jgdal.GdalException; |
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import org.gvsig.metadata.MetadataLocator; |
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import org.gvsig.raster.cache.tile.provider.TileListener; |
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import org.gvsig.raster.gdal.io.GdalNative; |
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import org.gvsig.raster.gdal.io.GdalProvider; |
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import org.gvsig.raster.impl.datastruct.ExtentImpl; |
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import org.gvsig.raster.impl.store.AbstractRasterDataParameters; |
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import org.gvsig.raster.impl.store.DefaultStoreFactory; |
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import org.gvsig.tools.ToolsLocator; |
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* @author Nacho Brodin (nachobrodin@gmail.com) |
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*/ |
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public class PostGISRasterProvider extends GdalProvider {
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public static String NAME = "PostGIS Raster Store"; |
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public static String DESCRIPTION = "PostGIS Raster file"; |
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public static final String METADATA_DEFINITION_NAME = "PostGISRasterStore"; |
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private DBServerExplorer dbServerExplorer = null; |
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private DBStoreParameters dbParameters = null; |
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private ArrayList<Overview> overviews = new ArrayList<Overview>(); |
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public static String NAME = "PostGIS Raster Store"; |
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public static String DESCRIPTION = "PostGIS Raster file"; |
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public static final String METADATA_DEFINITION_NAME = "PostGISRasterStore"; |
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private static final String OVERVIEW_PREFIX = "o_"; |
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private DBServerExplorer dbServerExplorer = null; |
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private DBStoreParameters dbParameters = null; |
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private ArrayList<Overview> overviews = new ArrayList<Overview>(); |
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class Overview implements Comparable<Overview> {
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public int width = 0; |
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public int height = 0; |
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public int factor = 0; |
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public DBStoreParameters param = null; |
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public int width = 0; |
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public int height = 0; |
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public int factor = 0; |
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public double pxSizeOverview = 0; |
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public DBStoreParameters param = null; |
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public Overview() {
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} |
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public Overview(int f, int w, int h, DBStoreParameters p) {
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this.width = w; |
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this.height = h; |
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this.factor = f; |
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this.param = p; |
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this.pxSizeOverview = getExtent().width() / (double)w; |
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} |
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public int compareTo(Overview o) {
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if(factor < o.factor) |
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return -1; |
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dataman.registerStoreFactory(NAME, DefaultStoreFactory.class); |
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} |
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public PostGISRasterProvider() {
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} |
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public PostGISRasterProvider (PostGISRasterDataParameters params, |
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DataStoreProviderServices storeServices) throws NotSupportedExtensionException {
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super(params, storeServices, ToolsLocator.getDynObjectManager() |
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setDataType(dt); |
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PostGISRasterDataParameters p = (PostGISRasterDataParameters)params; |
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dbParameters = (DBStoreParameters)p.getDBStoreParameters(); |
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dbServerExplorer = p.getDBExplorer(); |
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//Object obj = p.getDynValue(PostGISRasterDataParameters.FIELD_DBPARAMS); |
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dbParameters = (DBStoreParameters)p.getDynValue(PostGISRasterDataParameters.FIELD_DBPARAMS); |
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dbServerExplorer = (DBServerExplorer)p.getDynValue(PostGISRasterDataParameters.FIELD_DBEXPLORER); |
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try {
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readOverviews(); |
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} catch (DataException e) {
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} |
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} |
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/** |
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* Reads overviews from database. The overviews in PostGIS raster are loaded |
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* in separated tables. The name of those tables is the same that the original table |
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* with a overview prefix. Now this prefix is "o_X_" where the X is a factor scale. |
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* |
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* For that reason the overview object contains the DataParameter which correspond |
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* to each table. |
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* |
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* @throws DataException |
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*/ |
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private void readOverviews() throws DataException {
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overviews.clear(); |
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overviews.add(new Overview(1, (int)getWidth(), (int)getHeight(), (DBStoreParameters)param)); |
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String table = dbParameters.getTable(); |
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List parameters = dbServerExplorer.list(); |
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|
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while (iter.hasNext()) {
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DBStoreParameters p = (DBStoreParameters) iter.next(); |
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String tname = p.getTable(); |
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if(tname.endsWith(table) && tname.startsWith("o_")) {
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if(tname.endsWith(table) && tname.startsWith(OVERVIEW_PREFIX)) {
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String factor = tname.substring(tname.indexOf('_') + 1);
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factor = tname.substring(0, tname.indexOf('_'));
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factor = factor.substring(0, factor.indexOf('_'));
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try {
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Overview o = new Overview(); |
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o.factor = new Integer(factor); |
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o.width = (int)(getWidth() / o.factor); |
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o.height = (int)(getHeight() / o.factor); |
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o.pxSizeOverview = getExtent().width() / (double)o.width; |
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o.param = p; |
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overviews.add(o); |
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} catch (NumberFormatException e) {
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} |
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Collections.sort(overviews); |
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} |
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/** |
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* Selects the right overview. The right overview means the first |
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* one with a pixel size lesser or equals than the original. |
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* @param pixels |
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* @param mts |
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*/ |
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private void overviewSelector(int pixels, double mts) {
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this.param = overviews.get(0).param; |
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double pxSizeRequest = mts / (double)pixels; |
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for (int i = overviews.size() - 1; i > 0; i--) {
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Overview ovb = overviews.get(i); |
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if(pxSizeRequest <= ovb.pxSizeOverview) {
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this.param = ovb.param; |
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} |
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} |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(double, double, double, double, int, int, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.raster.cache.tile.provider.TileListener) |
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*/ |
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public void getWindow(Extent ex, int bufWidth, int bufHeight, |
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BandList bandList, TileListener listener) throws ProcessInterruptedException, RasterDriverException {
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super.getWindow(ex, bufWidth, bufHeight, bandList, listener); |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(org.gvsig.fmap.dal.coverage.datastruct.Extent, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.fmap.dal.coverage.dataset.Buffer) |
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*/ |
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public Buffer getWindow(Extent ex, BandList bandList, Buffer rasterBuf) |
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throws ProcessInterruptedException, RasterDriverException {
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return super.getWindow(ex, bandList, rasterBuf); |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(double, double, double, double, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.fmap.dal.coverage.dataset.Buffer, boolean) |
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*/ |
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public Buffer getWindow(double ulx, double uly, double w, double h, |
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BandList bandList, Buffer rasterBuf, boolean adjustToExtent) throws ProcessInterruptedException, RasterDriverException {
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return super.getWindow(ulx, uly, w, h, bandList, rasterBuf, adjustToExtent); |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(double, double, double, double, int, int, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.fmap.dal.coverage.dataset.Buffer, boolean) |
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*/ |
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public Buffer getWindow(Extent extent, |
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int bufWidth, int bufHeight, BandList bandList, Buffer rasterBuf, boolean adjustToExtent) throws ProcessInterruptedException, RasterDriverException {
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return super.getWindow(extent, bufWidth, bufHeight, bandList, rasterBuf, adjustToExtent); |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(int, int, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.fmap.dal.coverage.dataset.Buffer) |
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*/ |
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public Buffer getWindow(int x, int y, |
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BandList bandList, Buffer rasterBuf) throws ProcessInterruptedException, RasterDriverException {
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return super.getWindow(x, y, bandList, rasterBuf); |
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} |
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/* |
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* (non-Javadoc) |
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* @see org.gvsig.raster.impl.provider.DefaultRasterProvider#getWindowRaster(int, int, int, int, int, int, org.gvsig.fmap.dal.coverage.datastruct.BandList, org.gvsig.fmap.dal.coverage.dataset.Buffer) |
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*/ |
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public Buffer getWindow(int x, int y, int w, int h, |
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int bufWidth, int bufHeight, BandList bandList, Buffer rasterBuf) throws ProcessInterruptedException, RasterDriverException {
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return super.getWindow(x, y, w, h, bufWidth, bufHeight, bandList, rasterBuf); |
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} |
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} |
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