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// Jdbc.java
// $Id: Jdbc.java,v 1.7 2000/08/16 21:37:49 ylafon Exp $
// (c) COPYRIGHT MIT, INRIA and Keio, 2000.
// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.tools.jdbc;

import java.util.Properties;

/**
 * @version $Revision: 1.7 $
 * @author  Benot Mah (bmahe@w3.org)
 */
public class Jdbc {

    public final static String MAX_CONNECTIONS_P = 
  "org.w3c.tools.jdbc.maxconn";

    public final static int DEFAULT_MAX_CONN = 10;

    public final static String JDBC_DRIVER_P =
  "org.w3c.tools.jdbc.jdbcdriver";

    public final static String USER_P =
  "org.w3c.tools.jdbc.user";

    public final static String PASSWORD_P =
  "org.w3c.tools.jdbc.password";

    public static int getMaxConn(Properties props) {
  return getInt(props, MAX_CONNECTIONS_P, DEFAULT_MAX_CONN);
    }

    public static Properties setMaxConn(Properties props, int max) {
  if (max < 1) {
      props.put(MAX_CONNECTIONS_P, String.valueOf(DEFAULT_MAX_CONN));
  } else {
      props.put(MAX_CONNECTIONS_P, String.valueOf(max));
  }
  return props;
    }

    public static String getDriver(Properties props) {
  return (String) props.get(JDBC_DRIVER_P);
    }

    public static Properties setDriver(Properties props, String driver) {
  if (driver != null)
      props.put(JDBC_DRIVER_P, driver);
  return props;
    }

    public static String getUser(Properties props) {
  return (String) props.get(USER_P);
    }

    public static Properties setUser(Properties props, String user) {
  if (user != null)
      props.put(USER_P, user);
  return props;
    }

    public static String getPassword(Properties props) {
  return (String) props.get(PASSWORD_P);
    }

    public static Properties setPassword(Properties props, String password) {
  if (password != null)
      props.put(PASSWORD_P, password);
  return props;
    }

    //
    // private
    //

    private static void setBoolean(Properties props, 
           String name,
           boolean bool) 
    {
  props.put(name, String.valueOf(bool));
    }

    private static boolean getBoolean(Properties props, String name) {
  String p = (String) props.get(name);
  if (p != null) {
      return p.equalsIgnoreCase("true");
  }
  return false;
    }

    private static int getInt(Properties props, String name, int def) {
  String str = (String) props.get(name);
  if (str != null) {
      try {
    return Integer.parseInt(str);
      } catch (NumberFormatException ex) {
    return def;
      }
  } else {
      return def;
  }
    }

    private static void setInt(Properties props, String name, int i) {
  String sint = String.valueOf(i);
  props.put(name, sint);
    }

    private static long getLong(Properties props, String name, long def) {
  String str = (String) props.get(name);
  if (str != null) {
      try {
    return Long.parseLong(str);
      } catch (NumberFormatException ex) {
    return def;
      }
  } else {
      return def;
  }
    }

    private static void setLong(Properties props, String name, long l) {
  String slong = String.valueOf(l);
  props.put(name, slong);
    }

}
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