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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: 2006-08-31 16:54:32 -0700 (Thu, 31 Aug 2006) $'
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* '$Revision: 3035 $'
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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 java.io.File;
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import edu.ucsb.nceas.metacat.DBConnection;
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import edu.ucsb.nceas.metacat.MetaCatUtil;
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import com.vividsolutions.jts.geom.Coordinate;
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import com.vividsolutions.jts.geom.Point;
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import com.vividsolutions.jts.geom.Polygon;
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import com.vividsolutions.jts.geom.MultiPolygon;
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import com.vividsolutions.jts.geom.MultiPoint;
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import com.vividsolutions.jts.geom.GeometryFactory;
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import com.vividsolutions.jts.geom.PrecisionModel;
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import org.geotools.feature.AttributeType;
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import org.geotools.feature.AttributeTypeFactory;
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import org.geotools.feature.Feature;
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import org.geotools.feature.FeatureType;
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import org.geotools.feature.FeatureTypeFactory;
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import org.geotools.feature.SchemaException;
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import java.sql.ResultSet;
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import java.sql.PreparedStatement;
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import java.util.Vector;
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import org.apache.log4j.Logger;
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public class SpatialDocument {
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private DBConnection dbconn;
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private static Logger log =
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Logger.getLogger(SpatialDocument.class.getName());
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private SpatialFeatureSchema featureSchema = new SpatialFeatureSchema();
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Vector west = new Vector();
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Vector south = new Vector();
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Vector east = new Vector();
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Vector north = new Vector();
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String title = null;
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String docid = null;
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/** constructor that queries the db **/
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public SpatialDocument( String docid , DBConnection dbconn ) {
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this.docid = docid;
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PreparedStatement pstmt = null;
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ResultSet rs = null;
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this.dbconn = dbconn;
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/*
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* Get the bounding coordinates
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*/
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String query = "SELECT path, nodedatanumerical, parentnodeid FROM xml_path_index"
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+ " WHERE docid = '" + docid.trim() + "'"
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+ " AND (path = '" + MetaCatUtil.getOption("westBoundingCoordinatePath") + "'"
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+ " OR path = '" + MetaCatUtil.getOption("southBoundingCoordinatePath") + "'"
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+ " OR path = '" + MetaCatUtil.getOption("eastBoundingCoordinatePath") + "'"
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+ " OR path = '" + MetaCatUtil.getOption("northBoundingCoordinatePath") + "'"
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+ " ) ORDER BY parentnodeid;";
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try {
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pstmt = dbconn.prepareStatement(query);
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pstmt.execute();
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rs = pstmt.getResultSet();
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while (rs.next()) {
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if ( rs.getString(1).equals( MetaCatUtil.getOption("westBoundingCoordinatePath") ) )
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this.west.add( rs.getFloat(2) );
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else if ( rs.getString(1).equals( MetaCatUtil.getOption("southBoundingCoordinatePath") ) )
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this.south.add( rs.getFloat(2) );
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else if ( rs.getString(1).equals( MetaCatUtil.getOption("eastBoundingCoordinatePath") ) )
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this.east.add( rs.getFloat(2) );
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else if ( rs.getString(1).equals( MetaCatUtil.getOption("northBoundingCoordinatePath") ) )
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this.north.add( rs.getFloat(2) );
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else
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log.error("** An xml path not related to your bounding coordinates was returned by this query \n" + query + "\n");
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}
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rs.close();
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pstmt.close();
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}
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catch(Exception e) {
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log.error(" ---- Error getting bounding coordinates for " + docid);
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e.printStackTrace();
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}
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// Get the Title
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query = "select docid, nodedata, nodeid "
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+ "from xml_nodes "
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+ "where parentnodeid = "
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+ " ( select nodeid "
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+ " from xml_nodes "
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+ " where docid like '" + docid.trim() +"' "
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+ " and nodename like 'title%' "
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+ " and parentnodeid = "
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+ " ( select nodeid "
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+ " from xml_nodes "
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+ " where docid like '" + docid.trim() + "' "
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+ " and nodename = 'dataset' "
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+ " limit 1) "
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+ " limit 1)" ;
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try {
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pstmt = dbconn.prepareStatement(query);
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pstmt.execute();
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rs = pstmt.getResultSet();
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if (rs.next())
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this.title = rs.getString(2);
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rs.close();
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pstmt.close();
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}
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catch(Exception e) {
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log.error(" **** Error getting docids from getTitle for docid = "+docid);
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e.printStackTrace();
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log.error(" query ============== \n " + query);
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this.title = docid;
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}
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/* try {
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dbconn.close();
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} catch( java.sql.SQLException e ) {
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log.error("java.sql.SQLException");
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}
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*/
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}
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/*
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* Returns a jts (multi)polygon feature with geometry plus attributes
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* ready to be inserted into our spatial dataset cache
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*/
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public Feature getPolygonFeature() {
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// Get polygon feature type
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FeatureType polyType = featureSchema.getPolygonFeatureType();
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MultiPolygon theGeom = getPolygonGeometry();
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if (theGeom == null)
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return null;
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// Populate the feature schema
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try {
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Feature polyFeature = polyType.create(new Object[]{
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theGeom,
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this.docid,
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getUrl(this.docid),
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this.title });
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return polyFeature;
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} catch (org.geotools.feature.IllegalAttributeException e) {
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log.error("!!!!!!! org.geotools.feature.IllegalAttributeException");
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return null;
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}
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}
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/*
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* Returns a jts (multi)point feature with geometry plus attributes
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* ready to be inserted into our spatial dataset cache
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*/
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public Feature getPointFeature() {
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// Get polygon feature type
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FeatureType pointType = featureSchema.getPointFeatureType();
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MultiPoint theGeom = getPointGeometry();
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if (theGeom == null)
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return null;
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// Populate the feature schema
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try {
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Feature pointFeature = pointType.create(new Object[]{
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theGeom,
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this.docid,
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getUrl(this.docid),
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this.title });
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return pointFeature;
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} catch (org.geotools.feature.IllegalAttributeException e) {
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log.error("!!!!!!! org.geotools.feature.IllegalAttributeException");
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return null;
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}
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}
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/*
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* Given a valid docid, return an appropriate URL
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* for viewing the metadata document
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*/
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private String getUrl( String docid ) {
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String docUrl = MetaCatUtil.getOption("metacatUrl")
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+ "?action=read"
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+ "&docid=" + docid
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+ "&qformat=" + MetaCatUtil.getOption("default-style");
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return docUrl;
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}
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/**
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* returns the title of the docid
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*/
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private String getTitle(String docid) {
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String title = null;
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PreparedStatement pstmt = null;
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ResultSet rs = null;
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String query = "select docid, nodedata, nodeid "
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+ "from xml_nodes "
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+ "where parentnodeid = "
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+ " ( select nodeid "
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+ " from xml_nodes "
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+ " where docid like '" + docid.trim() +"' "
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+ " and nodename like 'title%' "
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+ " and parentnodeid = "
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+ " ( select nodeid "
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+ " from xml_nodes "
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+ " where docid like '" + docid.trim() + "' "
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+ " and nodename = 'dataset' "
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+ " limit 1) "
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+ " limit 1)" ;
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/*
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* String query = "select docid, nodedata, nodeid from xml_nodes where "
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* + "nodeid =(select nodeid from xml_nodes where docid like '"
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* + docid.trim() + "' and nodename like 'title%');";
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*/
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try {
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dbconn = new DBConnection();
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pstmt = dbconn.prepareStatement(query);
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pstmt.execute();
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rs = pstmt.getResultSet();
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if (rs.next())
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title = rs.getString(2);
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rs.close();
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pstmt.close();
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dbconn.close();
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}
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catch(Exception e) {
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log.error(" **** Error getting docids from getTitle for docid = "+docid);
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e.printStackTrace();
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log.error(" query ============== \n " + query);
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title = docid;
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}
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return title;
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}
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/*
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* Returns polygon geometry
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*/
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private MultiPolygon getPolygonGeometry() {
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PrecisionModel precModel = new PrecisionModel(); // default: Floating point
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GeometryFactory geomFac = new GeometryFactory( precModel, featureSchema.srid );
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Vector polygons = new Vector();
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if ( west.size() == south.size() && south.size() == east.size() && east.size() == north.size() ) {
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for (int i = 0; i < west.size(); i++) {
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Coordinate[] linestringCoordinates = new Coordinate[5];
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// Check if it's actually a valid polygon
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if ( (Float)west.elementAt(i) == 0.0 &&
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(Float)east.elementAt(i) == 0.0 &&
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(Float)north.elementAt(i) == 0.0 &&
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(Float)south.elementAt(i) == 0.0) {
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log.warn(" Invalid or empty coodinates ... skipping");
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continue;
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} else if( ((Float)west.elementAt(i)).compareTo( (Float)east.elementAt(i) ) == 0 &&
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((Float)north.elementAt(i)).compareTo( (Float)south.elementAt(i) ) == 0 ) {
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log.warn(" Point coordinates only.. skipping polygon generation");
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continue;
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}
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linestringCoordinates[0] = new Coordinate( (Float)west.elementAt(i), (Float)south.elementAt(i) );
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linestringCoordinates[1] = new Coordinate( (Float)west.elementAt(i), (Float)north.elementAt(i));
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linestringCoordinates[2] = new Coordinate( (Float)east.elementAt(i), (Float)north.elementAt(i));
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linestringCoordinates[3] = new Coordinate( (Float)east.elementAt(i), (Float)south.elementAt(i));
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linestringCoordinates[4] = new Coordinate( (Float)west.elementAt(i), (Float)south.elementAt(i));
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polygons.add( geomFac.createPolygon( geomFac.createLinearRing(linestringCoordinates), null) );
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}
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} else {
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log.error(" *** Something went wrong.. your east,west,north and south bounding arrays are different sizes!");
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}
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if( polygons.size() > 0 ) {
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Polygon[] polyArray = geomFac.toPolygonArray( polygons );
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MultiPolygon multiPolyGeom= geomFac.createMultiPolygon( polyArray );
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return multiPolyGeom;
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} else {
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return null;
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}
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}
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/*
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* returns a point geometry
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*/
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private MultiPoint getPointGeometry() {
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PrecisionModel precModel = new PrecisionModel(); // default: Floating point
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GeometryFactory geomFac = new GeometryFactory( precModel, featureSchema.srid );
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PreparedStatement pstmt = null;
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ResultSet rs = null;
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Vector points = new Vector();
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if ( west.size() == south.size() && south.size() == east.size() && east.size() == north.size() ) {
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for (int i = 0; i < west.size(); i++) {
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// Check if it's actually a valid point
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if ( (Float)west.elementAt(i) == (float)0.0 &&
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(Float)east.elementAt(i) == (float)0.0 &&
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(Float)north.elementAt(i) == (float)0.0 &&
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(Float)south.elementAt(i) == (float)0.0 ) {
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log.warn(" Invalid or empty coodinates ... skipping");
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continue;
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}
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Double xCenter = ( (Float)west.elementAt(i) + (Float)east.elementAt(i) ) / (Double) 2.0;
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Double yCenter = ( (Float)south.elementAt(i) + (Float)north.elementAt(i) ) / (Double) 2.0;
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points.add( geomFac.createPoint( new Coordinate( xCenter, yCenter)) );
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}
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} else {
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log.error(" *** Something went wrong.. your east,west,north and south bounding vectors are different sizes!");
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}
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if( points.size() > 0 ) {
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Point[] pointArray = geomFac.toPointArray( points );
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MultiPoint multiPointGeom= geomFac.createMultiPoint( pointArray );
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return multiPointGeom;
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} else {
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return null;
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}
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}
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}
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