svn-gvsig-desktop / trunk / libraries / libFMap / src / com / iver / cit / gvsig / fmap / operations / strategies / DBStrategy.java @ 5574
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/*
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* Created on 08-mar-2005
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*
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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) 2004 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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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package com.iver.cit.gvsig.fmap.operations.strategies; |
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import java.awt.Graphics2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.image.BufferedImage; |
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import org.cresques.cts.ICoordTrans; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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import com.iver.cit.gvsig.fmap.ViewPort; |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.core.v02.FSymbol; |
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import com.iver.cit.gvsig.fmap.drivers.DriverAttributes; |
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import com.iver.cit.gvsig.fmap.drivers.DriverIOException; |
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import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator; |
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import com.iver.cit.gvsig.fmap.drivers.VectorialDatabaseDriver; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
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import com.iver.cit.gvsig.fmap.layers.ISpatialDB; |
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import com.iver.cit.gvsig.fmap.layers.SpatialCache; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.Selectable; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.SingleLayer; |
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import com.iver.cit.gvsig.fmap.rendering.VectorialLegend; |
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import com.iver.utiles.swing.threads.Cancellable; |
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import com.iver.utiles.swing.threads.CancellableMonitorable; |
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/**
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* @author FJP
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*
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* TODO To change the template for this generated type comment go to
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* Window - Preferences - Java - Code Generation - Code and Comments
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*/
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public class DBStrategy extends DefaultStrategy { |
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public DBStrategy(FLayer capa) {
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super(capa);
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} |
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/* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.operations.strategies.Strategy#draw(java.awt.image.BufferedImage, java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort, com.iver.cit.gvsig.fmap.operations.Cancellable)
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*/
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public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort, Cancellable cancel) throws DriverException { |
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// Nos aprovechamos del SQL para lanzar la consulta
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// teniendo en cuenta el boundingbox que toca.
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FLyrVect lyr = (FLyrVect) getCapa(); |
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ISpatialDB dbAdapter = (ISpatialDB) ((SingleLayer) capa).getSource(); |
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VectorialDatabaseDriver dbDriver = (VectorialDatabaseDriver) dbAdapter.getDriver(); |
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try {
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dbAdapter.start(); |
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Selectable selectable=lyr.getRecordset(); |
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ICoordTrans ct = lyr.getCoordTrans(); |
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FBitSet bitSet = selectable.getSelection(); |
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String strEPSG = viewPort.getProjection().getAbrev().substring(5); |
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// TODO: EXPLORAR LAS LEYENDAS PARA SABER LOS CAMPOS QUE VAMOS
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// A NECESITAR RECUPERAR, PARA INCLUIR EN LA CONSULTA SOLO
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// AQUELLOS QUE VAMOS A NECESITAR. CON ESO GANAREMOS VELOCIDAD.
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// Ejemplo:
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// En ArcSDE:
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// con Vias cogiendo un campo solo: 5 segundos
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// con todos los campos de Vias: 11 segundos.
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// => MODIFICAR EL getFeatureIterator para que admita los nombres
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// de los campos adem?s del rect?ngulo que pides.
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String[] usedFields = null; |
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VectorialLegend l = null;
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if (lyr.getLegend() instanceof VectorialLegend) |
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{
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l = (VectorialLegend) lyr.getLegend(); |
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} |
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Rectangle2D rectAux = viewPort.getAdjustedExtent();
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if (ct != null) { |
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ICoordTrans invertedCT = ct.getInverted(); |
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rectAux = invertedCT.convert(rectAux); |
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} |
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usedFields = l.getUsedFields(); |
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IFeatureIterator geomIt = dbAdapter.getFeatureIterator(rectAux, strEPSG, usedFields); |
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if (geomIt == null) |
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{
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// dbAdapter.stop();
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return;
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} |
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DriverAttributes attr = dbAdapter.getDriverAttributes(); |
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boolean bMustClone = false; |
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if (attr != null) |
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{
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if (attr.isLoadedInMemory())
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{
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bMustClone = attr.isLoadedInMemory(); |
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} |
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} |
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int i;
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FSymbol symbol; |
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SpatialCache cache = lyr.createSpatialCache(); |
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while (geomIt.hasNext())
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{
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if (cancel.isCanceled()) {
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geomIt.closeIterator(); |
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break;
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} |
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IFeature feat = geomIt.next(); |
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if (feat == null) |
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{
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continue;
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} |
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IGeometry geom = feat.getGeometry(); |
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// System.out.println("PINTANDO FEATURE " + feat.getID());
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if (ct != null) { |
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if (bMustClone)
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geom = geom.cloneGeometry(); |
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geom.reProject(ct); |
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} |
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i = dbAdapter.getRowIndexByFID(feat); |
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// System.out.println("Antes de pintar " + i);
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// Value val = feat.getAttribute(0);
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symbol = l.getSymbolByFeature(feat); |
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// symbol = l.getSymbol(i);
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if (symbol == null) continue; |
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if (bitSet.get(i)) {
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symbol = FSymbol.getSymbolForSelection(symbol); |
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} |
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if (cache != null) |
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{
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// TODO: Comprobar aqu? tambi?n si esto es necesario.
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if (lyr.isSpatialCacheEnabled())
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{
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if (cache.getMaxFeatures() < cache.size())
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{
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// lyr.setSpatialCache(null);
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// cache = null;
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} |
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else
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{
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// Ya reproyectado todo
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cache.insert(geom.getBounds2D(), geom); |
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} |
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} |
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} |
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// symbol = l.getDefaultSymbol();
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geom.drawInts(g,viewPort, symbol); |
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} |
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dbAdapter.stop(); |
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} catch (DriverIOException e) {
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throw new DriverException(e); |
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} |
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} |
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/**
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* Processes features of layer whose geometries would
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* intersect rectangle passed as param by calling visitor's
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* visit method.
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*
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* FIXME FeatureVisitor is designed to work with memory and
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* file drivers (visit(IGeometry, index), and to work with
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* geometries (thats the reason for not to create Values, instead
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* of pass an index)
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*
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* But DBDrivers recovers IGeometry and Values in dbAdapter.getFeatureIterator
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* method. We must add a visit(Feature) method to FeatureVisitor.
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*
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*
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*/
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public void process(FeatureVisitor visitor, Rectangle2D rect, CancellableMonitorable cancel) |
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throws DriverException, VisitException{
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FLyrVect lyr = (FLyrVect) getCapa(); |
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ISpatialDB dbAdapter = (ISpatialDB) ((SingleLayer) capa).getSource(); |
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VectorialDatabaseDriver dbDriver = (VectorialDatabaseDriver) dbAdapter.getDriver(); |
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try {
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dbAdapter.start(); |
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ICoordTrans ct = lyr.getCoordTrans(); |
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String strEPSG = lyr.getProjection().getAbrev().substring(5); |
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Rectangle2D rectAux = rect;
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if (ct != null) { |
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ICoordTrans invertedCT = ct.getInverted(); |
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rectAux = invertedCT.convert(rectAux); |
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} |
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IFeatureIterator geomIt = dbAdapter.getFeatureIterator(rectAux, strEPSG, null);
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if (geomIt == null){ |
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return;
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} |
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DriverAttributes attr = dbAdapter.getDriverAttributes(); |
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boolean bMustClone = false; |
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if (attr != null) |
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{
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if (attr.isLoadedInMemory())
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{
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bMustClone = attr.isLoadedInMemory(); |
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}//if
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}//if
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int i;
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while (geomIt.hasNext())
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{
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if(cancel != null){ |
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cancel.reportStep(); |
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} |
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IFeature feat = geomIt.next(); |
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IGeometry geom = feat.getGeometry(); |
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if (ct != null) { |
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if (bMustClone){
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geom = geom.cloneGeometry(); |
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}//if
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geom.reProject(ct); |
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}//if
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i = dbDriver.getRowIndexByFID(feat); |
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if (geom.intersects(rect)){
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visitor.visit(geom, i); |
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} |
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} |
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dbAdapter.stop(); |
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} catch (DriverIOException e) {
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throw new DriverException(e); |
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} |
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} |
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/* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.operations.strategies.DefaultStrategy#queryByRect(java.awt.geom.Rectangle2D)
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*/
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public FBitSet queryByRect(Rectangle2D rect, CancellableMonitorable cancel) throws DriverException { |
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// Nos aprovechamos del SQL para lanzar la consulta
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// teniendo en cuenta el boundingbox que toca.
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FLyrVect lyr = (FLyrVect) getCapa(); |
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ISpatialDB dbAdapter = (ISpatialDB) ((SingleLayer) capa).getSource(); |
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VectorialDatabaseDriver dbDriver = (VectorialDatabaseDriver) dbAdapter.getDriver(); |
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try {
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dbAdapter.start(); |
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ICoordTrans ct = lyr.getCoordTrans(); |
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String strEPSG = lyr.getProjection().getAbrev().substring(5); |
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Rectangle2D rectAux = rect;
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if (ct != null) { |
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ICoordTrans invertedCT = ct.getInverted(); |
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rectAux = invertedCT.convert(rectAux); |
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} |
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FBitSet selection = new FBitSet();
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IFeatureIterator geomIt = dbAdapter.getFeatureIterator(rectAux, strEPSG, null);
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if (geomIt == null) |
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{
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return selection;
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} |
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DriverAttributes attr = dbAdapter.getDriverAttributes(); |
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boolean bMustClone = false; |
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if (attr != null) |
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{
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if (attr.isLoadedInMemory())
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{
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bMustClone = attr.isLoadedInMemory(); |
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} |
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} |
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int i;
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while (geomIt.hasNext())
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{
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if(cancel != null) |
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{
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cancel.reportStep(); |
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if(cancel.isCanceled())
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{
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dbAdapter.stop(); |
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return selection;
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} |
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} |
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IFeature feat = geomIt.next(); |
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IGeometry geom = feat.getGeometry(); |
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if (ct != null) { |
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if (bMustClone)
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geom = geom.cloneGeometry(); |
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geom.reProject(ct); |
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} |
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i = dbDriver.getRowIndexByFID(feat); |
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if (geom.intersects(rect))
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selection.set(i, true);
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} |
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dbAdapter.stop(); |
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return selection;
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} catch (DriverIOException e) {
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throw new DriverException(e); |
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} |
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} |
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} |