/*
* 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.data.jdbc.datasource;
import java.sql.Connection;
import java.sql.Statement;
import org.apache.commons.dbcp.DelegatingConnection;
import org.apache.commons.dbcp.DelegatingStatement;
/**
* Unwraps DBCP managed connections
*
* @author Andrea Aime - TOPP
*
*
* @source $URL$
*/
public class DBCPUnWrapper implements UnWrapper {
public boolean canUnwrap(Connection conn) {
return conn instanceof DelegatingConnection;
}
public Connection unwrap(Connection conn) {
if (!canUnwrap(conn))
throw new IllegalArgumentException("This unwrapper can only handle instances of "
+ DelegatingConnection.class);
Connection unwrapped = ((DelegatingConnection) conn).getInnermostDelegate();
if (unwrapped == null)
throw new RuntimeException("Could not unwrap connection. Is the DBCP pool configured "
+ "to allow access to underlying connections?");
return unwrapped;
}
public boolean canUnwrap(Statement st) {
return st instanceof DelegatingStatement;
}
public Statement unwrap(Statement statement) {
if(!canUnwrap(statement))
throw new IllegalArgumentException("This unwrapper can only handle instances of "
+ DelegatingStatement.class);
Statement unwrapped = ((DelegatingStatement) statement).getInnermostDelegate();
if (unwrapped == null)
throw new RuntimeException("Could not unwrap connection. Is the DBCP pool configured "
+ "to allow access to underlying connections?");
return unwrapped;
}
}