com.sas.framework.expojo.mock
Class MockPersistenceProvider

java.lang.Object
  com.sas.framework.expojo.PersistenceProvider
      com.sas.framework.expojo.mock.MockPersistenceProvider

public class MockPersistenceProvider
extends PersistenceProvider

Provides a 'drop in' mock persistence provider that does not persist objects to a database. It's purpose is to allow expojo applications to be run/tested in a memory only environment to exercise unit tests, business rules etc., without the overhead of database persistence. It is only intended to be used as a testing mechanism. Applications running in a production environment would typically use a true persistence provider like JDO or Hibernate.

Field Summary

protected static java.lang.Object

firstPersistedObject Stores a reference to the first persisted object - which should be the system object.

Fields inherited from class com.sas.framework.expojo.PersistenceProvider

depth, modelExposer

Constructor Summary

MockPersistenceProvider()
Constructs the object giving it a PersistenceManager.

Method Summary

void	beginTx() Begins a transaction.
void	close() Closes the persistence provider.
void	commitTx() Commits a transaction.
void	delete(java.lang.Object object) Deletes the persistent object from the datastore.
java.lang.Object	getFirstPersistedObject() Returns firstPersistedObject
boolean	hasActiveTx() Returns true if the PersistenceProvider has an active transaction.
void	open() Opens a persistence provider.
void	persist(java.lang.Object object) Makes the given object persistent.
java.lang.RuntimeException	processException(java.lang.RuntimeException e) Processes an exception thrown while in a transaction.
void	rollbackTx() Rolls back a transaction.
void	setFirstPersistedObject(java.lang.Object firstPersistedObject) Sets firstPersistedObject

Methods inherited from class com.sas.framework.expojo.PersistenceProvider

setModelExposer

Methods inherited from class java.lang.Object

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

Field Detail

firstPersistedObject

protected static transient java.lang.Object firstPersistedObject

Stores a reference to the first persisted object - which should be the system object. This can then be used by the Mock repository in getSystemEntity to return the top level system entity object. This is a static because it's shared by all threads - heh it's only the mock system ok - we're not going to have a private cache for each PersistenceProvider.

Constructor Detail

MockPersistenceProvider

public MockPersistenceProvider()

Constructs the object giving it a PersistenceManager.

Method Detail

hasActiveTx

public boolean hasActiveTx()

Returns true if the PersistenceProvider has an active transaction.

Specified by:

hasActiveTx in class PersistenceProvider

setFirstPersistedObject

public void setFirstPersistedObject(java.lang.Object firstPersistedObject)

Sets firstPersistedObject

getFirstPersistedObject

public java.lang.Object getFirstPersistedObject()

Returns firstPersistedObject

close

public void close()

Closes the persistence provider. It can no longer be used after being closed.

Specified by:

close in class PersistenceProvider

processException

public java.lang.RuntimeException processException(java.lang.RuntimeException e)

Processes an exception thrown while in a transaction. The exception could be relevent to the persistence technology or a generic RuntimeException. If it's an optimistic verification exception (optimistic locking check failed) then no exception is thrown and the persistence technology may or may not need clean. In the case of JDO a rollback as already been performed.

Specified by:

processException in class PersistenceProvider

delete

public void delete(java.lang.Object object)

Deletes the persistent object from the datastore.

Specified by:

delete in class PersistenceProvider

persist

public void persist(java.lang.Object object)

Makes the given object persistent.

Specified by:

persist in class PersistenceProvider

rollbackTx

public void rollbackTx()

Rolls back a transaction.

Specified by:

rollbackTx in class PersistenceProvider

commitTx

public void commitTx()

Commits a transaction.

Specified by:

commitTx in class PersistenceProvider

beginTx

public void beginTx()

Begins a transaction.

Specified by:

beginTx in class PersistenceProvider

open

public void open()

Opens a persistence provider.

Specified by:

open in class PersistenceProvider