org.postgresql.Driver2 Maven / Gradle / Ivy
package org.postgresql;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
/**
* Wraps the PostgreSQL JDBC driver to convert the returning column names to lower case.
*/
public class Driver2 extends Driver {
@Override
public java.sql.Connection connect(String url, Properties info) throws SQLException {
Connection conn = super.connect(url, info);
Object proxy = Proxy.newProxyInstance(
conn.getClass().getClassLoader(),
new Class[]{ Connection.class },
new ConnectionProxyHandler(conn)
);
return Connection.class.cast(proxy);
}
private static class ConnectionProxyHandler implements InvocationHandler {
private Connection conn;
public ConnectionProxyHandler(Connection conn){
this.conn = conn;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if(method.getName().equals("prepareStatement")){
if(args != null && args.length == 2 && args[1].getClass().isArray()){
String[] keys = (String[]) args[1];
for(int i = 0; i < keys.length; i++){
keys[i] = keys[i].toLowerCase();
}
}
}
return method.invoke(conn, args);
}
}
}