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/**
* H2GIS is a library that brings spatial support to the H2 Database Engine
* . H2GIS is developed by CNRS
* .
*
* This code is part of the H2GIS project. H2GIS is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* Lesser General Public License as published by the Free Software Foundation;
* version 3.0 of the License.
*
* H2GIS is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details .
*
*
* For more information, please consult:
* or contact directly: info_at_h2gis.org
*/
package org.h2gis.functions.io.osm;
import java.io.File;
import java.io.FileNotFoundException;
import java.sql.Connection;
import java.sql.SQLException;
import org.h2gis.api.AbstractFunction;
import org.h2gis.api.EmptyProgressVisitor;
import org.h2gis.api.ScalarFunction;
import org.h2gis.utilities.URIUtilities;
/**
* SQL Function to copy OSM File data into a set of tables.
*
* @author Erwan Bocher
*/
public class OSMRead extends AbstractFunction implements ScalarFunction {
public OSMRead() {
addProperty(PROP_REMARKS, "Read a OSM file and copy the content in the specified tables.\n" +
"Here a sample in order to extract buildings polygons using way nodes:\n" +
"create index on MAP_WAY_NODE(ID_WAY,ID_NODE);\n" +
"drop table if exists MAP_BUILDINGS,MAP_WAY_GEOM;\n" +
"create table MAP_BUILDINGS(ID_WAY bigint primary key) as SELECT DISTINCT ID_WAY FROM MAP_WAY_TAG WT," +
" MAP_TAG T WHERE WT.ID_TAG = T.ID_TAG AND T.TAG_KEY IN ('building');\n" +
"create table MAP_WAY_GEOM(ID_WAY BIGINT PRIMARY KEY, THE_GEOM POLYGON) AS SELECT ID_WAY, " +
"ST_MAKEPOLYGON(ST_MAKELINE(THE_GEOM)) THE_GEOM FROM (SELECT (SELECT ST_ACCUM(THE_GEOM) THE_GEOM FROM" +
" (SELECT N.ID_NODE, N.THE_GEOM,WN.ID_WAY IDWAY FROM MAP_NODE N,MAP_WAY_NODE WN WHERE N.ID_NODE = WN" +
".ID_NODE ORDER BY WN.NODE_ORDER) WHERE IDWAY = W.ID_WAY) THE_GEOM ,W.ID_WAY FROM MAP_WAY W," +
"MAP_BUILDINGS B WHERE W.ID_WAY = B.ID_WAY) GEOM_TABLE WHERE ST_GEOMETRYN(THE_GEOM," +
"1) = ST_GEOMETRYN(THE_GEOM, ST_NUMGEOMETRIES(THE_GEOM)) AND ST_NUMGEOMETRIES(THE_GEOM) > 2;");
}
@Override
public String getJavaStaticMethod() {
return "readOSM";
}
/**
*
* @param connection
* @param fileName
* @param tableReference
* @throws FileNotFoundException
* @throws SQLException
*/
public static void readOSM(Connection connection, String fileName, String tableReference) throws FileNotFoundException, SQLException {
File file = URIUtilities.fileFromString(fileName);
if (!file.exists()) {
throw new FileNotFoundException("The following file does not exists:\n" + fileName);
}
if (file.getName().toLowerCase().endsWith(".osm")) {
OSMParser osmp = new OSMParser();
osmp.read(connection, tableReference, file, new EmptyProgressVisitor());
} else if (file.getName().toLowerCase().endsWith(".osm.gz")) {
OSMParser osmp = new OSMParser();
osmp.read(connection, tableReference, file, new EmptyProgressVisitor());
} else if (file.getName().toLowerCase().endsWith(".osm.bz2")) {
OSMParser osmp = new OSMParser();
osmp.read(connection, tableReference, file, new EmptyProgressVisitor());
} else {
throw new SQLException("Supported formats are .osm, .osm.gz, .osm.bz2");
}
}
/**
*
* @param connection
* @param fileName
* @throws FileNotFoundException
* @throws SQLException
*/
public static void readOSM(Connection connection, String fileName) throws FileNotFoundException, SQLException {
final String name = URIUtilities.fileFromString(fileName).getName();
readOSM(connection, fileName, name.substring(0, name.lastIndexOf(".")).toUpperCase());
}
}
