/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2003-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library 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 2.1 of the License.
*
* This library 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.
*/
package org.geotools.data.shapefile.fid;
import static org.geotools.data.shapefile.files.ShpFileType.*;
import java.io.IOException;
import java.net.URL;
import java.util.logging.Logger;
import org.geotools.data.shapefile.files.ShpFiles;
import org.geotools.data.shapefile.files.StorageFile;
import org.geotools.data.shapefile.shp.IndexFile;
/**
* Creates a .fix file (fid index).
*
* @author Jesse
*
*
*
* @source $URL$
*/
public class FidIndexer {
static Logger LOGGER = org.geotools.util.logging.Logging
.getLogger("org.geotools.data.shapefile");
/**
* Generates the FID index file for the shpFile
*/
public static synchronized void generate(URL shpURL) throws IOException {
generate(new ShpFiles(shpURL));
}
/**
* Generates the FID index file for the shpFiles
*/
public static void generate(ShpFiles shpFiles) throws IOException {
LOGGER.fine("Generating fids for " + shpFiles.get(SHP));
IndexFile indexFile = null;
StorageFile file = shpFiles.getStorageFile(FIX);
IndexedFidWriter writer = null;
try {
indexFile = new IndexFile(shpFiles, false);
// writer closes channel for you.
writer = new IndexedFidWriter(shpFiles, file);
for (int i = 0, j = indexFile.getRecordCount(); i < j; i++) {
writer.next();
}
} finally {
try {
if (writer != null) {
writer.close();
}
file.replaceOriginal();
} finally {
if (indexFile != null) {
indexFile.close();
}
}
}
}
}