Package adams.db

Class FacadeManager<T extends AbstractTableFacade>

java.lang.Object

adams.db.FacadeManager<T>

Type Parameters:

T - the type of facade this manager is for

All Implemented Interfaces:

Serializable

public class FacadeManager<T extends AbstractTableFacade>
extends Object
implements Serializable

Manages the database URL/facade relations.

Version:

$Revision: 5952 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected DatabaseManager	m_DatabaseManager	the database manager to use for default connection.
protected String	m_FacadeName	the facade this manager is for.
protected HashMap<String,T>	m_Facades	for storing the facade objects.

Constructor Summary

Constructors

Constructor	Description
FacadeManager(String facadeName, DatabaseManager manager)	Initializes the manager.

Method Summary

Modifier and Type	Method	Description
T	add(AbstractDatabaseConnection dbcon, T facade)	Adds the facade object for the specified database connection.
protected String	createURL(AbstractDatabaseConnection dbcon)	Generates a URL that includes the user name.
T	get(AbstractDatabaseConnection dbcon)	Gets the facade object for the specified database connection.
DatabaseManager	getDatabaseManager()	Returns the database manager in use.
String	getFacadeName()	Returns the name of the facade this manager is handling.
boolean	has(AbstractDatabaseConnection dbcon)	Checks whether a facade object for the specified database connection is available.
boolean	hasDatabaseManager()	Checks whether a database manager is available.
Iterator<T>	iterator()	Returns an iterator over all facades.
String	toString()	Returns a short string representation of the manager.

Methods inherited from class java.lang.Object

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

Field Detail

m_FacadeName

protected String m_FacadeName

the facade this manager is for.

m_Facades

protected HashMap<String,T extends AbstractTableFacade> m_Facades

for storing the facade objects.

m_DatabaseManager

protected DatabaseManager m_DatabaseManager

the database manager to use for default connection.

Constructor Detail

FacadeManager

public FacadeManager(String facadeName,
                     DatabaseManager manager)

Initializes the manager.

Parameters:

facadeName - the name of the facade this manager is for

manager - the database manager to obtain the default database connection from

Method Detail

getFacadeName

public String getFacadeName()

Returns the name of the facade this manager is handling.

Returns:

the facade name

hasDatabaseManager

public boolean hasDatabaseManager()

Checks whether a database manager is available.

Returns:

true if a database manager is available

getDatabaseManager

public DatabaseManager getDatabaseManager()

Returns the database manager in use.

Returns:

the database manager

createURL

protected String createURL(AbstractDatabaseConnection dbcon)

Generates a URL that includes the user name.

Parameters:

dbcon - the database connection

Returns:

the complete URL

has

public boolean has(AbstractDatabaseConnection dbcon)

Checks whether a facade object for the specified database connection is available.

Parameters:

dbcon - the connection to check

Returns:

true if a facade object is available

get

public T get(AbstractDatabaseConnection dbcon)

Gets the facade object for the specified database connection.

Parameters:

dbcon - the connection to get the facade for

Returns:

the facade object if available, otherwise null

add

public T add(AbstractDatabaseConnection dbcon,
             T facade)

Adds the facade object for the specified database connection.

Parameters:

dbcon - the connection to add the facade for

facade - the facade object to add

Returns:

the previous facade, null if no previous one stored

iterator

public Iterator<T> iterator()

Returns an iterator over all facades.

Returns:

the iterator

toString

public String toString()

Returns a short string representation of the manager.

Overrides:

toString in class Object

Returns:

the string representation