DataC 1.02

import java.io.FileInputStream;
import java.lang.reflect.Constructor;
import java.sql.Connection;
import java.util.Properties;
import java.util.Vector;

import org.brains2b.data.Condition;
import org.brains2b.data.DataControl;
import org.brains2b.data.DataController;
import org.brains2b.sql.Connector;

public class Controller extends Connector implements DataController {

	private static Controller m_instance;
	
	protected Controller() {
		super();
		try {
			Properties prop = new Properties();
			prop.load(new FileInputStream("conf/connect.properties"));
			init(
				prop.getProperty("driver"),
				prop.getProperty("url"),
				prop.getProperty("user"),
				prop.getProperty("password"));
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	public static Controller getInstance() {
		if (m_instance == null) {
			m_instance = new Controller();
		}
		return m_instance;
	}
	
	public int update(Object o) throws Exception {
		DataControl dc = getControlObject(o);
		return dc.update();
	}

	public int insert(Object o) throws Exception {
		DataControl dc = getControlObject(o);
		return dc.insert();
	}

	public int delete(Object o) throws Exception {
		DataControl dc = getControlObject(o);
		return dc.delete();
	}

	public Object retrieve(Object o, Object condition) throws Exception {
		DataControl dc = getControlObject(o);
		Vector v = dc.retrieveList((Condition) condition);
		if (v==null) return null;
		return v.get(0);
	}
	

	public List retrieveList(Object o, Condition condition) throws Exception {
		DataControl dc = getControlObject(o);
		return dc.retrieveList((Condition) condition);
	}

	protected DataControl getControlObject(Object o) throws Exception {
		Class c = o.getClass();
		String dcName =
			c.getPackage().getName()
				+ "."
				+ c.getName().substring(c.getName().lastIndexOf(".") + 1)
				+ "DC";

		Class dcClass = c.getClassLoader().loadClass(dcName);
		Constructor[] cons = dcClass.getConstructors();
		Constructor con =
			dcClass.getConstructor(
				new Class[] { Connection.class, Object.class });
		return (DataControl) con.newInstance(
			new Object[] { getConnection(), o });
	}

}