/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2002-2008, 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.jdbc;
import java.io.IOException;
import java.sql.Connection;
import java.util.NoSuchElementException;
import org.geotools.data.DelegatingFeatureReader;
import org.geotools.data.FeatureReader;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
public class JDBCClosingFeatureReader implements DelegatingFeatureReader<SimpleFeatureType, SimpleFeature> {
FeatureReader reader;
public JDBCClosingFeatureReader( FeatureReader reader ) {
this.reader = reader;
}
public FeatureReader<SimpleFeatureType, SimpleFeature> getDelegate() {
return reader;
}
public SimpleFeatureType getFeatureType() {
return (SimpleFeatureType) reader.getFeatureType();
}
public boolean hasNext() throws IOException {
return reader.hasNext();
}
public SimpleFeature next() throws IOException, IllegalArgumentException,
NoSuchElementException {
return (SimpleFeature) reader.next();
}
public void close() throws IOException {
FeatureReader r = reader;
while( r instanceof DelegatingFeatureReader ) {
if ( r instanceof JDBCFeatureReader ) {
break;
}
r = ((DelegatingFeatureReader)r).getDelegate();
}
if ( r instanceof JDBCFeatureReader ) {
JDBCFeatureReader jdbcReader = (JDBCFeatureReader) r;
JDBCFeatureSource fs = jdbcReader.featureSource;
Connection cx = jdbcReader.cx;
try {
reader.close();
}
finally {
fs.getDataStore().releaseConnection( cx, fs.getState() );
}
}
}
}