com.pow2.dao
Class ConnectionProvider

java.lang.Object
  com.pow2.dao.ConnectionProvider

Direct Known Subclasses:

JakartaConnectionProvider, ProtomatterConnectionProvider, SimpleConnectionProvider

public abstract class ConnectionProvider

extends Object

ConnectionProvider base class.
To create a ConnectionProvider for your preferred ConnectionPooler, extend this calss and implement initialize and getConnection methods.

Author:

Luca Fossato

Field Summary

protected org.apache.log4j.Category	cat Log4j category
protected ConnectionProviderPrefs	prefs ConnectionProvider preferences

Constructor Summary

ConnectionProvider()
Constructor for the ConnectionProvider object.

Method Summary

protected abstract Connection	getConnection() Get a JDBC Connection.
protected Connection	getConnection(int isolationLevel) Get a "transactional" JDBC connection.
protected String	getLastToken(String str, String tokenSeparator) Get the last token from the input string.
ConnectionProviderPrefs	getPrefs() Gets the prefs attribute of the ConnectionProvider object
protected abstract void	init() Initialize the connection pool provider.
void	setPrefs(ConnectionProviderPrefs prefs) Sets the prefs attribute of the ConnectionProvider object

Methods inherited from class java.lang.Object

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

Field Detail

cat

protected org.apache.log4j.Category cat

Log4j category

prefs

protected ConnectionProviderPrefs prefs

ConnectionProvider preferences

Constructor Detail

ConnectionProvider

public ConnectionProvider()
                   throws Exception

Constructor for the ConnectionProvider object.

Throws:

Exception - Description of the Exception

Method Detail

getPrefs

public ConnectionProviderPrefs getPrefs()

Gets the prefs attribute of the ConnectionProvider object

Returns:

The prefs value

setPrefs

public void setPrefs(ConnectionProviderPrefs prefs)

Sets the prefs attribute of the ConnectionProvider object

Parameters:

prefs - The new prefs value

init

protected abstract void init()
                      throws Exception

Initialize the connection pool provider.

Throws:

Exception - Description of the Exception

getConnection

protected abstract Connection getConnection()
                                     throws SQLException

Get a JDBC Connection.

Returns:

a JDBC Connection

Throws:

SQLException - Description of the Exception

getConnection

protected Connection getConnection(int isolationLevel)
                            throws SQLException

Get a "transactional" JDBC connection.

Parameters:

isolationLevel - the isolation level to set the connection to

Returns:

the new "transactional" connection object

Throws:

SQLException - if any error occurs

getLastToken

protected String getLastToken(String str,
                              String tokenSeparator)

Get the last token from the input string.

Parameters:

str - the string containing the token

tokenSeparator - the token separator string (i.e.: "'", ":", etc)

Returns:

the last token from the input string