org.yawlfoundation.yawl.resourcing.datastore.orgdata
Class EmptyDataSource

java.lang.Object
  org.yawlfoundation.yawl.resourcing.datastore.orgdata.DataSource
      org.yawlfoundation.yawl.resourcing.datastore.orgdata.EmptyDataSource

public class EmptyDataSource
extends DataSource

This class provides a default DataSource object to the ResourceManager in the event that there is no actual Datasource set and/or initialised. Author: Michael Adams Date: 10/04/2008

Field Summary

Fields inherited from class org.yawlfoundation.yawl.resourcing.datastore.orgdata.DataSource

_name

Constructor Summary

EmptyDataSource()

Method Summary

boolean	authenticate(String userid, String password) Allows a user/password pair to be passed to an external data source for validation.
boolean	delete(Object obj) deletes a persisted object
int	execUpdate(String query) Executes an low-level update command
ResourceDataSet	getDataSource()
void	importObj(Object obj) imports (persists) a new object into the datastore.
String	insert(Object obj) inserts (persists) a new object record into the datastore
ResourceDataSet	loadResources() Loads the entire contents of the org datastores into the relevant Participant, Role, Capability, Position and OrgGroup objects
void	update(Object obj) updates a persisted object

Methods inherited from class org.yawlfoundation.yawl.resourcing.datastore.orgdata.DataSource

getName, getNextID, setName

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyDataSource

public EmptyDataSource()

Method Detail

getDataSource

public ResourceDataSet getDataSource()

loadResources

public ResourceDataSet loadResources()

Description copied from class: DataSource

Loads the entire contents of the org datastores into the relevant Participant, Role, Capability, Position and OrgGroup objects

Specified by:

loadResources in class DataSource

Returns:

a fully populated ResourceSet

update

public void update(Object obj)

Description copied from class: DataSource

updates a persisted object

Specified by:

update in class DataSource

Parameters:

obj - the object to update

delete

public boolean delete(Object obj)

Description copied from class: DataSource

deletes a persisted object

Specified by:

delete in class DataSource

Parameters:

obj - the object to delete

insert

public String insert(Object obj)

Description copied from class: DataSource

inserts (persists) a new object record into the datastore

Specified by:

insert in class DataSource

Parameters:

obj - the object to insert

Returns:

a newly created unique identifier (primary key) for the inserted object

importObj

public void importObj(Object obj)

Description copied from class: DataSource

imports (persists) a new object into the datastore. The difference between this method and 'insert' is that insert generates a new object id - this method does not (it assumes the object already has a valid id).

Specified by:

importObj in class DataSource

Parameters:

obj - the object to insert

execUpdate

public int execUpdate(String query)

Description copied from class: DataSource

Executes an low-level update command

Specified by:

execUpdate in class DataSource

Parameters:

query - the query to execute

Returns:

the number of rows affected

authenticate

public boolean authenticate(String userid,
                            String password)
                     throws YAuthenticationException

Description copied from class: DataSource

Allows a user/password pair to be passed to an external data source for validation.

Specified by:

authenticate in class DataSource

Parameters:

userid - the userid

password - the plain-text password

Returns:

the outcome of the authentication

Throws:

YAuthenticationException