baseCode.db
Class Handle

java.lang.Object
  baseCode.db.Handle

public class Handle

extends java.lang.Object

Database handle container and query convenience functions.

Copyright (c) 2004

Institution: Columbia University

Version:

$Id: Handle.java,v 1.6 2005/01/12 19:10:46 pavlidis Exp $

Author:

Paul Pavlidis

Constructor Summary

Handle()

Handle(java.lang.String host, java.lang.String database)

Handle(java.lang.String host, java.lang.String database, java.lang.String user, java.lang.String password)

Method Summary

void	closeCon() Close the database connection.
java.sql.Connection	getCon()
java.sql.Statement	newStatement()
java.sql.PreparedStatement	prepareStatement(java.lang.String query)
java.lang.Double	queryToDouble(java.lang.String query)
java.lang.Integer	queryToInt(java.lang.String query)
java.util.List	queryToList(java.lang.String query)
java.util.Map	queryToMap(java.lang.String query)
java.util.Set	queryToSet(java.lang.String query)
java.lang.String	queryToString(java.lang.String query)
java.lang.String	quote(java.lang.String k)
java.sql.ResultSet	runQuery(java.lang.String query)
int	runUpdateQuery(java.lang.String query)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Handle

public Handle(java.lang.String host,
              java.lang.String database,
              java.lang.String user,
              java.lang.String password)
       throws java.sql.SQLException

Parameters:

host - String

database - String

user - String

password - String

Throws:

java.sql.SQLException

Handle

public Handle()
       throws java.sql.SQLException

Handle

public Handle(java.lang.String host,
              java.lang.String database)
       throws java.sql.SQLException

Method Detail

getCon

public java.sql.Connection getCon()

Returns:

java.sql.Connection

quote

public java.lang.String quote(java.lang.String k)
                       throws java.sql.SQLException

Throws:

java.sql.SQLException

newStatement

public java.sql.Statement newStatement()
                                throws java.sql.SQLException

Returns:

java.sql.Statement

Throws:

java.sql.SQLException

closeCon

public void closeCon()

Close the database connection.

runUpdateQuery

public int runUpdateQuery(java.lang.String query)
                   throws java.sql.SQLException

Parameters:

query - String

Returns:

int

Throws:

java.sql.SQLException

runQuery

public java.sql.ResultSet runQuery(java.lang.String query)
                            throws java.sql.SQLException

Parameters:

query - String

Returns:

java.sql.ResultSet

Throws:

java.sql.SQLException

prepareStatement

public java.sql.PreparedStatement prepareStatement(java.lang.String query)
                                            throws java.sql.SQLException

Parameters:

query - String

Returns:

java.sql.PreparedStatement

Throws:

java.sql.SQLException

queryToMap

public java.util.Map queryToMap(java.lang.String query)
                         throws java.sql.SQLException

Parameters:

query - String

Returns:

java.util.Map

Throws:

java.sql.SQLException

queryToSet

public java.util.Set queryToSet(java.lang.String query)
                         throws java.sql.SQLException

Parameters:

query - String

Returns:

java.util.Set

Throws:

java.sql.SQLException

queryToList

public java.util.List queryToList(java.lang.String query)
                           throws java.sql.SQLException

Parameters:

query - String

Returns:

java.util.List

Throws:

java.sql.SQLException

queryToInt

public java.lang.Integer queryToInt(java.lang.String query)
                             throws java.sql.SQLException

Parameters:

query - String

Returns:

Object containing the first result obtained. If no result, it return null.

Throws:

java.sql.SQLException

queryToDouble

public java.lang.Double queryToDouble(java.lang.String query)
                               throws java.sql.SQLException

Parameters:

query - String

Returns:

java.lang.Double

Throws:

java.sql.SQLException

queryToString

public java.lang.String queryToString(java.lang.String query)
                               throws java.sql.SQLException

Parameters:

query - String

Returns:

java.lang.String

Throws:

java.sql.SQLException