Package liquibase.lockservice

Class StandardLockService

java.lang.Object

liquibase.lockservice.StandardLockService

All Implemented Interfaces:

LockService, PrioritizedService

Direct Known Subclasses:

LockServiceImpl

public class StandardLockService
extends Object
implements LockService

Field Summary

Fields

Modifier and Type	Field	Description
protected Long	changeLogLockPollRate
protected Long	changeLogLockRecheckTime
protected static final ResourceBundle	coreBundle
protected Database	database
protected boolean	hasChangeLogLock
protected Boolean	hasDatabaseChangeLogLockTable
protected boolean	isDatabaseChangeLogLockTableInitialized
protected ObjectQuotingStrategy	quotingStrategy
protected final SecureRandom	random

Fields inherited from interface liquibase.servicelocator.PrioritizedService

COMPARATOR, PRIORITY_DATABASE, PRIORITY_DEFAULT

Constructor Summary

Constructors

Constructor	Description
StandardLockService()

Method Summary

Modifier and Type	Method	Description
boolean	acquireLock()
void	destroy()
void	forceReleaseLock()	Releases whatever locks are on the database change log table
protected Long	getChangeLogLockRecheckTime()
protected Long	getChangeLogLockWaitTime()
int	getPriority()
boolean	hasChangeLogLock()
void	init()
protected boolean	isDatabaseChangeLogLockTableCreated()
protected boolean	isDatabaseChangeLogLockTableCreated(boolean forceRecheck)	Check whether the databasechangeloglock table exists in the database.
boolean	isDatabaseChangeLogLockTableInitialized(boolean tableJustCreated)
protected boolean	isDatabaseChangeLogLockTableInitialized(boolean tableJustCreated, boolean forceRecheck)	Determine whether the databasechangeloglock table has been initialized.
DatabaseChangeLogLock[]	listLocks()
void	releaseLock()
void	reset()	Clears information the lock handler knows about the tables.
void	setChangeLogLockRecheckTime(long changeLogLockRecheckTime)
void	setChangeLogLockWaitTime(long changeLogLockWaitTime)
void	setDatabase(Database database)
boolean	supports(Database database)
void	waitForLock()

Methods inherited from class java.lang.Object

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

Field Details

coreBundle

protected static final ResourceBundle coreBundle

database

protected Database database

hasChangeLogLock

protected boolean hasChangeLogLock

changeLogLockPollRate

protected Long changeLogLockPollRate

changeLogLockRecheckTime

protected Long changeLogLockRecheckTime

hasDatabaseChangeLogLockTable

protected Boolean hasDatabaseChangeLogLockTable

isDatabaseChangeLogLockTableInitialized

protected boolean isDatabaseChangeLogLockTableInitialized

quotingStrategy

protected ObjectQuotingStrategy quotingStrategy

random

protected final SecureRandom random

Constructor Details

StandardLockService

public StandardLockService()

Method Details

getPriority

public int getPriority()

Specified by:

getPriority in interface PrioritizedService

supports

public boolean supports(Database database)

Specified by:

supports in interface LockService

setDatabase

public void setDatabase(Database database)

Specified by:

setDatabase in interface LockService

getChangeLogLockWaitTime

protected Long getChangeLogLockWaitTime()

setChangeLogLockWaitTime

public void setChangeLogLockWaitTime(long changeLogLockWaitTime)

Specified by:

setChangeLogLockWaitTime in interface LockService

getChangeLogLockRecheckTime

protected Long getChangeLogLockRecheckTime()

setChangeLogLockRecheckTime

public void setChangeLogLockRecheckTime(long changeLogLockRecheckTime)

Specified by:

setChangeLogLockRecheckTime in interface LockService

init

public void init()
          throws DatabaseException

Specified by:

init in interface LockService

Throws:

DatabaseException

isDatabaseChangeLogLockTableInitialized

public boolean isDatabaseChangeLogLockTableInitialized(boolean tableJustCreated)

isDatabaseChangeLogLockTableInitialized

protected boolean isDatabaseChangeLogLockTableInitialized(boolean tableJustCreated,
 boolean forceRecheck)

Determine whether the databasechangeloglock table has been initialized.

Parameters:

forceRecheck - if true, do not use any cached information, and recheck the actual database

hasChangeLogLock

public boolean hasChangeLogLock()

Specified by:

hasChangeLogLock in interface LockService

isDatabaseChangeLogLockTableCreated

protected boolean isDatabaseChangeLogLockTableCreated(boolean forceRecheck)

Check whether the databasechangeloglock table exists in the database.

Parameters:

forceRecheck - if true, do not use any cached information and check the actual database

isDatabaseChangeLogLockTableCreated

protected boolean isDatabaseChangeLogLockTableCreated()
                                               throws DatabaseException

Throws:

DatabaseException

waitForLock

public void waitForLock()
                 throws LockException

Specified by:

waitForLock in interface LockService

Throws:

LockException

acquireLock

public boolean acquireLock()
                    throws LockException

Specified by:

acquireLock in interface LockService

Throws:

LockException

releaseLock

public void releaseLock()
                 throws LockException

Specified by:

releaseLock in interface LockService

Throws:

LockException

listLocks

public DatabaseChangeLogLock[] listLocks()
                                  throws LockException

Specified by:

listLocks in interface LockService

Throws:

LockException

forceReleaseLock

public void forceReleaseLock()
                      throws LockException,
DatabaseException

Description copied from interface: LockService

Releases whatever locks are on the database change log table

Specified by:

forceReleaseLock in interface LockService

Throws:

LockException

DatabaseException

reset

public void reset()

Description copied from interface: LockService

Clears information the lock handler knows about the tables. Should only be called by Liquibase internal calls

Specified by:

reset in interface LockService

destroy

public void destroy()
             throws DatabaseException

Specified by:

destroy in interface LockService

Throws:

DatabaseException