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/**
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* '$RCSfile$'
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* Copyright: 2003 Regents of the University of California.
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*
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* Author: Matthew Perry
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* '$Date$'
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* '$Revision$'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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package edu.ucsb.nceas.metacat.spatial;
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import org.geotools.data.shapefile.ShapefileDataStore;
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import org.geotools.data.FeatureStore;
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import org.geotools.data.DefaultTransaction;
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import org.geotools.data.Transaction;
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import org.geotools.filter.CompareFilter;
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import org.geotools.filter.FilterFactory;
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import org.geotools.filter.FilterFactoryFinder;
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import org.geotools.filter.IllegalFilterException;
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import org.geotools.feature.FeatureCollection;
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import org.geotools.feature.FeatureCollections;
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5829
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leinfelder
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import org.opengis.feature.simple.SimpleFeature;
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import org.opengis.feature.simple.SimpleFeatureType;
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3035
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perry
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import org.apache.log4j.Logger;
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import java.io.File;
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import java.io.IOException;
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import java.net.URI;
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import java.net.URL;
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import java.net.MalformedURLException;
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5030
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daigle
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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perry
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perry
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/**
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* Class providing direct read/write access to the
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* persistent spatial cache.
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*/
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3035
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perry
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public class SpatialDataset {
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tao
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private static SpatialFeatureSchema featureSchema = new SpatialFeatureSchema();
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private static ShapefileDataStore polygonStore = null;
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private static ShapefileDataStore pointStore = null;
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private static FeatureStore featureStore = null;
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daigle
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//public String polygonShpUri = PropertyService.getProperty("certPath") + "data/metacat_shps/data_bounds.shp";
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//public String pointShpUri = PropertyService.getProperty("certPath")+ "data/metacat_shps/data_points.shp";
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perry
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FeatureCollection polygonCollection = FeatureCollections.newCollection();
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FeatureCollection pointCollection = FeatureCollections.newCollection();
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private static Logger log =
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Logger.getLogger(SpatialDataset.class.getName());
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perry
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/**
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* empty constructor for SpatialDataset
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*/
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3200
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tao
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public SpatialDataset() throws IOException {
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polygonStore = new ShapefileDataStore( (new File( featureSchema.polygonShpUri)).toURL() );
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pointStore = new ShapefileDataStore( (new File( featureSchema.pointShpUri)).toURL() );
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}
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/**
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* Adds a new feature (from a SpatialDocument)
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* This is faster than insertOrUpdate but
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* relying on this method might cause duplication
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* of docids in the spatial cache. Therefore, its really only useful when
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* regenerating the entire cache.
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perry
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*
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* @param geomType The kind of feature to be added. Currently "polygon" and "point" supported.
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* @param feature The geotools feature to be added to the spatial cache.
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3035
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perry
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*/
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5829
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leinfelder
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public void add( String geomType, SimpleFeature feature ) {
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3035
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perry
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if( geomType.equals("polygon") ) {
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// Check if feature actually is a multipolygon
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if( feature != null)
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polygonCollection.add( feature );
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} else if( geomType.equals("point") ) {
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// Check if feature actually is a multipoint
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if( feature != null)
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pointCollection.add( feature );
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}
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}
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3040
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perry
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/**
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3035
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perry
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* Deletes given docid from the spatial cache.
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3040
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perry
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*
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* @param geomType The kind of feature to be added. Currently "polygon" and "point" supported.
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* @param docid The document to be deleted from the spatial cache.
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3035
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perry
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*/
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public void delete( String geomType, String docid ) throws IOException {
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FilterFactory filterFactory = FilterFactoryFinder.createFilterFactory();
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CompareFilter filter = null;
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FeatureStore fStore = null;
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ShapefileDataStore dStore = null;
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try {
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// Create the filter
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filter = filterFactory.createCompareFilter(CompareFilter.COMPARE_EQUALS);
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filter.addLeftValue(filterFactory.createAttributeExpression("docid"));
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filter.addRightValue(filterFactory.createLiteralExpression(docid));
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} catch (IllegalFilterException e) {
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e.printStackTrace();
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tao
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throw new IOException(e.getMessage());
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3035
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perry
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}
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tao
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if( geomType.equals("polygon") ) {
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deleteFromDataStore(polygonStore, filter, docid);
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}else if( geomType.equals("point") ) {
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deleteFromDataStore(pointStore, filter, docid);
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}
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else
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{
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throw new IOException("Unkown Geo Type "+geomType);
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}
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3035
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perry
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}
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3200
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tao
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/*
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* Delete a feature from given spatail data store
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*/
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private void deleteFromDataStore(ShapefileDataStore dStore, CompareFilter filter, String docid)
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throws IOException
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{
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if (dStore != null && filter != null)
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{
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synchronized(dStore)
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{
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// Begin new transaction
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) );
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String lockId = "SpatialDataset.delete";
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FeatureStore fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]);
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try {
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if (fStore != null)
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{
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// Initiate the transaction
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fStore.setTransaction( t );
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t.addAuthorization( lockId );
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// Remove old feature
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fStore.removeFeatures( filter );
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// Commit changes to shapefile
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t.commit();
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log.info(" Delete docid " + docid + " from spatial cache");
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}
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else
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{
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log.error("Feature store is null");
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}
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} catch (MalformedURLException e) {
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e.printStackTrace();
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t.rollback(); // cancel opperations
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} catch (IOException e) {
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e.printStackTrace();
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t.rollback(); // cancel opperations
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} finally {
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// Close out the transaction
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t.close();
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}
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}
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}
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else if (dStore == null)
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{
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log.error("Shape file store is null");
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}
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}
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194 |
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195 |
3035
|
perry
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196 |
3040
|
perry
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/**
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197 |
3035
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perry
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* Either inserts or updates the spatial cache with the new
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* spatial document depending on if it currently exists.
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* Docid is also passed in for quicker searching.
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200 |
3040
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perry
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*
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* @param geomType The kind of feature to be added. Currently "polygon" and "point" supported.
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202 |
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* @param feature The geotools feature to be added to the spatial cache.
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203 |
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* @param docid The document id to be inserted or updated. Used to filter for existing features.
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204 |
3035
|
perry
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*/
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205 |
5829
|
leinfelder
|
public void insertOrUpdate( String geomType, SimpleFeature feature, String docid ) throws IOException {
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206 |
3035
|
perry
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207 |
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FeatureCollection fColl = FeatureCollections.newCollection();
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FilterFactory filterFactory = FilterFactoryFinder.createFilterFactory();
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209 |
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CompareFilter filter = null;
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210 |
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FeatureStore fStore = null;
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211 |
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ShapefileDataStore dStore = null;
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212 |
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213 |
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// Explain why geotools fails to create the projection info from the shapefile
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214 |
3039
|
perry
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//log.info( " The '.prj' errors below are related to a geotools bug " +
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215 |
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// " (http://jira.codehaus.org/browse/GEOT-604) and can be ignored");
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216 |
3035
|
perry
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217 |
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try {
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218 |
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// Create the filter
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219 |
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filter = filterFactory.createCompareFilter(CompareFilter.COMPARE_EQUALS);
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filter.addLeftValue(filterFactory.createAttributeExpression("docid"));
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filter.addRightValue(filterFactory.createLiteralExpression(docid));
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222 |
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} catch (IllegalFilterException e) {
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223 |
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e.printStackTrace();
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224 |
3200
|
tao
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throw new IOException(e.getMessage());
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225 |
3035
|
perry
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}
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226 |
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227 |
3200
|
tao
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if( geomType.equals("polygon") ) {
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228 |
5205
|
daigle
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log.debug("SpatialDataset.insertOrUpdate - inserting or updating polygon store");
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229 |
3200
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tao
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insertOrUpdateDataStore(polygonStore,filter, feature, fColl, docid);
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230 |
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} else if( geomType.equals("point") ) {
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231 |
5205
|
daigle
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log.debug("SpatialDataset.insertOrUpdate - inserting or updating point store");
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232 |
3200
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tao
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insertOrUpdateDataStore(pointStore,filter, feature, fColl, docid);
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233 |
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}else{
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234 |
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throw new IOException("Unkown Geo Type "+geomType);
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235 |
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}
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236 |
3035
|
perry
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237 |
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238 |
3200
|
tao
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239 |
3035
|
perry
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240 |
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241 |
3200
|
tao
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}
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242 |
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243 |
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/*
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244 |
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* Insert or update new feature in shape file
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245 |
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*/
|
246 |
5829
|
leinfelder
|
private void insertOrUpdateDataStore(ShapefileDataStore dStore, CompareFilter filter, SimpleFeature feature,
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247 |
3200
|
tao
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FeatureCollection fColl, String docid) throws IOException
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248 |
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{
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249 |
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if (dStore != null && filter != null && feature != null && fColl != null)
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{
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251 |
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synchronized(dStore)
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{
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253 |
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// Begin new transaction
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) );
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256 |
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String lockId = "SpatialDataset.insertOrUpdate";
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257 |
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258 |
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try {
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259 |
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FeatureStore fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]);
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if( fStore != null) {
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// Initiate the transaction
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fStore.setTransaction( t );
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t.addAuthorization( lockId );
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// Remove old feature
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fStore.removeFeatures( filter );
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266 |
3035
|
perry
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|
267 |
3200
|
tao
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// Create new feature collection then add it to feature Store
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268 |
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fColl.add( feature );
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fStore.addFeatures(fColl);
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270 |
3035
|
perry
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271 |
3200
|
tao
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// Commit changes to shapefile
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272 |
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t.commit();
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273 |
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log.info(" Insert or Update docid " + docid + " from spatial cache");
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274 |
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}
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275 |
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else
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{
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277 |
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log.error("Feature store is null");
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278 |
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}
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279 |
3035
|
perry
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|
280 |
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|
281 |
3200
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tao
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} catch (MalformedURLException e) {
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282 |
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e.printStackTrace();
|
283 |
4979
|
daigle
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t.rollback(); // cancel operations
|
284 |
3200
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tao
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} catch (IOException e) {
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285 |
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e.printStackTrace();
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286 |
4979
|
daigle
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t.rollback(); // cancel operations
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287 |
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} catch (Exception e) {
|
288 |
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e.printStackTrace();
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289 |
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t.rollback(); // cancel operations
|
290 |
3200
|
tao
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} finally {
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291 |
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// Close out the transaction
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292 |
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t.close();
|
293 |
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}
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294 |
3035
|
perry
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|
295 |
3200
|
tao
|
}
|
296 |
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}
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297 |
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else if (dStore == null)
|
298 |
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{
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299 |
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log.error("Shape file store is null");
|
300 |
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}
|
301 |
3035
|
perry
|
}
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302 |
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|
303 |
3040
|
perry
|
/**
|
304 |
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* Saves the SpatialDataset object to the spatial cache.
|
305 |
3035
|
perry
|
*/
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306 |
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public void save() {
|
307 |
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// Save Polygons
|
308 |
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try {
|
309 |
3200
|
tao
|
//URL anURL = (new File( featureSchema.polygonShpUri )).toURL();
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310 |
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//ShapefileDataStore polygonDatastore = new ShapefileDataStore(anURL);
|
311 |
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if (polygonStore != null)
|
312 |
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{
|
313 |
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|
314 |
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synchronized(polygonStore)
|
315 |
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{
|
316 |
5829
|
leinfelder
|
SimpleFeatureType polygonType = featureSchema.getPolygonFeatureType();
|
317 |
3200
|
tao
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polygonStore.createSchema( polygonType );
|
318 |
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FeatureStore polygonFeatureStore = (FeatureStore) polygonStore.getFeatureSource( polygonType.getTypeName() );
|
319 |
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polygonFeatureStore.addFeatures( polygonCollection );
|
320 |
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log.info(" ---- Polygons saved to " + featureSchema.polygonShpUri );
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321 |
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}
|
322 |
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}
|
323 |
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else
|
324 |
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{
|
325 |
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log.error("Couldn't find the polygon shape file store");
|
326 |
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}
|
327 |
3035
|
perry
|
} catch(java.net.MalformedURLException e) {
|
328 |
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log.error("Malformed URL Exception : "+e);
|
329 |
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} catch(java.io.IOException e) {
|
330 |
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log.error("IO Exception : "+e);
|
331 |
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|
|
332 |
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}
|
333 |
|
|
|
334 |
|
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// Save Points
|
335 |
|
|
try {
|
336 |
3200
|
tao
|
//URL anURL = (new File( featureSchema.pointShpUri )).toURL();
|
337 |
|
|
//ShapefileDataStore pointDatastore = new ShapefileDataStore(anURL);
|
338 |
|
|
if (pointStore != null)
|
339 |
|
|
{
|
340 |
|
|
synchronized(pointStore)
|
341 |
|
|
{
|
342 |
5829
|
leinfelder
|
SimpleFeatureType pointsType = featureSchema.getPointFeatureType();
|
343 |
3200
|
tao
|
pointStore.createSchema( pointsType );
|
344 |
|
|
FeatureStore pointFeatureStore = (FeatureStore) pointStore.getFeatureSource( pointsType.getTypeName() );
|
345 |
|
|
pointFeatureStore.addFeatures( pointCollection );
|
346 |
|
|
log.info(" ---- Polygons saved to " + featureSchema.pointShpUri );
|
347 |
|
|
}
|
348 |
|
|
}
|
349 |
|
|
else
|
350 |
|
|
{
|
351 |
|
|
log.error("Couldn't find the shape point file store");
|
352 |
|
|
}
|
353 |
3035
|
perry
|
} catch(java.net.MalformedURLException e) {
|
354 |
|
|
log.error("Malformed URL Exception : "+e);
|
355 |
|
|
} catch(java.io.IOException e) {
|
356 |
|
|
log.error("IO Exception : "+e);
|
357 |
|
|
}
|
358 |
|
|
}
|
359 |
3200
|
tao
|
|
360 |
|
|
|
361 |
3035
|
perry
|
|
362 |
|
|
}
|