svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_spatialindex / src / org / gvsig / fmap / data / index / spatial / gt2 / QuadTreeGt2Factory.java @ 23282
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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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/*
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* AUTHORS (In addition to CIT):
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* 2008 {{Company}} {{Task}}
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*/
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package org.gvsig.fmap.data.index.spatial.gt2; |
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import java.io.File; |
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import java.io.IOException; |
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import org.gvsig.fmap.data.index.IndexException; |
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import org.gvsig.fmap.data.index.SpatialIndex; |
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import org.gvsig.fmap.data.index.SpatialIndexFactory; |
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import org.gvsig.fmap.data.index.SpatialIndexParameters; |
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public class QuadTreeGt2Factory extends SpatialIndexFactory { |
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static {
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registerFactory(Factories.GT2_QUADTREE, "QuadTreeGt2Factory", QuadTreeGt2Factory.class);
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} |
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public SpatialIndex createSpatialIndex(SpatialIndexParameters params) throws IndexException { |
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if (params == null) { |
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params = new SpatialIndexParameters();
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} |
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SpatialIndex index = null;
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try {
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String filename = params.getFilename();
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File file = null; |
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if (filename != null) { |
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file = new File(filename); |
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} else {
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file = File.createTempFile("gvsig", ".qix"); |
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} |
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index = new QuadtreeGt2(file.getAbsolutePath(), "NM", params.getEnvelope(), params.getFeatureCount(), params.isOverwrite()); |
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} catch (IOException ioe) { |
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throw new IndexException(ioe); |
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} |
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return index;
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} |
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/* Metodo extraido de FlyrVect
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public SpatialIndex createSpatialIndex(FeatureStore store, File indexFile) throws SpatialIndexException {
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SpatialIndex spatialIndex = null;
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String fileName = indexFile.getAbsolutePath();
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SpatialIndex localCopy = null;
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Envelope fullExtent = (Envelope) store.getMetadata().get("extent");
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int featureCount = store.getMetadata().getInt("featureCount");
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double[] lc = fullExtent.getLowerCorner();
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double[] uc = fullExtent.getUpperCorner();
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com.vividsolutions.jts.geom.Envelope env = new com.vividsolutions.jts.geom.Envelope(lc[0], uc[0], lc[1], uc[1]);
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try {
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localCopy = new QuadtreeGt2(fileName, "NM", env, featureCount, true);
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} catch (SpatialIndexException sie1) {
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// Probably we dont have writing permissions
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String directoryName = System.getProperty("java.io.tmpdir");
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File newFile = new File(directoryName + File.separator
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+ indexFile.getName());
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String newFileName = newFile.getName();
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try {
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localCopy = new QuadtreeGt2(newFileName, "NM", fullExtent,
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featureCount, true);
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} catch (SpatialIndexException sie2) {
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// if we cant build a file based spatial index, we'll build
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// a pure memory spatial index
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localCopy = new QuadtreeJts();
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}
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} catch (Exception e) {
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e.printStackTrace();
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}// try
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BoundedShapes shapeBounds = (BoundedShapes) va.getDriver();
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try {
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for (int i = 0; i < va.getShapeCount(); i++) {
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if (cancelMonitor != null) {
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if (cancelMonitor.isCanceled())
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return;
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cancelMonitor.reportStep();
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}
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Rectangle2D r = shapeBounds.getShapeBounds(i);
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if (r != null)
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localCopy.insert(r, i);
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} // for
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va.stop();
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if (localCopy instanceof PersistentSpatialIndex)
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((PersistentSpatialIndex) localCopy).flush();
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spatialIndex = localCopy;
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// vectorial adapter needs a reference to the spatial index, to
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// solve
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// request for feature iteration based in spatial queries
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source.setSpatialIndex(spatialIndex);
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} catch (ReadDriverException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return spatialIndex;
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}
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*/
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} |