ERXJDBCMigrationLock Class Reference

Inherits er::extensions::migration::IERXMigrationLock.

Collaboration diagram for ERXJDBCMigrationLock:

[legend]

List of all members.

Public Member Functions
boolean	_tryLock (EOAdaptorChannel channel, EOModel model, String lockOwnerName, boolean createTableIfMissing)
void	setVersionNumber (EOAdaptorChannel channel, EOModel model, int versionNumber)
boolean	tryLock (EOAdaptorChannel channel, EOModel model, String lockOwnerName)
void	unlock (EOAdaptorChannel channel, EOModel model)
int	versionNumber (EOAdaptorChannel channel, EOModel model)
Static Public Attributes
static final Logger	log = Logger.getLogger(ERXJDBCMigrationLock.class)
Protected Member Functions
boolean	createIfMissing ()
String	dbUpdaterCreateStatement (EOModel model, JDBCAdaptor adaptor)
EOModel	dbUpdaterModelWithModel (EOModel model, JDBCAdaptor adaptor)
int	initialVersionForModel (EOModel model)
String	migrationTableName (JDBCAdaptor adaptor)
Private Attributes
EOModel	_dbUpdaterModelCache
EOModel	_lastUpdatedModel

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Member Function Documentation

boolean _tryLock	(	EOAdaptorChannel	channel,
		EOModel	model,
		String	lockOwnerName,
		boolean	createTableIfMissing
	)

boolean createIfMissing

(

)

[protected]

String dbUpdaterCreateStatement	(	EOModel	model,
		JDBCAdaptor	adaptor
	)			[protected]

EOModel dbUpdaterModelWithModel	(	EOModel	model,
		JDBCAdaptor	adaptor
	)			[protected]

int initialVersionForModel

(

EOModel

model

)

[protected]

String migrationTableName

(

JDBCAdaptor

adaptor

)

[protected]

Adds support for overriding the name of the db updater table on a per-database product level.

Parameters:

adaptor

the current jdbc adaptor

Returns:

the name of the dbupdater table

void setVersionNumber	(	EOAdaptorChannel	channel,
		EOModel	model,
		int	versionNumber
	)

Sets the current version number of the named model.

Parameters:

	channel	the adaptor channel associated with this process
	model	the model to set version information on
	versionNumber	the new version number

Implements IERXMigrationLock.

boolean tryLock	(	EOAdaptorChannel	channel,
		EOModel	model,
		String	lockOwnerName
	)

Attempts to retrieve a lock on the migration process for the named model. A lockOwnerName is provided that provides a simple mechanism to recover from a stale lock. If the lock owner name passed in matches the current lock owner name, then the lock is acquired.

Parameters:

	channel	the adaptor channel associated with this process
	model	the model to try to lock
	lockOwnerName	the name of the lock owner

Returns:

true if the lock was acquired, false if it was not

Implements IERXMigrationLock.

void unlock	(	EOAdaptorChannel	channel,
		EOModel	model
	)

Unlocks the given model. This should only be called if you acquired a lock with tryLock(..).

Parameters:

	channel	the adaptor channel associated with this process
	model	the model to unlock

Implements IERXMigrationLock.

int versionNumber	(	EOAdaptorChannel	channel,
		EOModel	model
	)

Returns the current version number of the named model.

Parameters:

	channel	the adaptor channel associated with this process
	model	the model to lookup version information on

Returns:

the current version number of the named model

Implements IERXMigrationLock.

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Member Data Documentation

EOModel _dbUpdaterModelCache [private]

EOModel _lastUpdatedModel [private]

final Logger log = Logger.getLogger(ERXJDBCMigrationLock.class) [static]

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The documentation for this class was generated from the following file:

• /opt/source/Wonder/Frameworks/Core/ERExtensions/Sources/er/extensions/migration/ERXJDBCMigrationLock.java