Module org.tentackle.persistence

Package org.tentackle.persist.lock

Class DbTokenLock

java.lang.Object

org.tentackle.dbms.AbstractDbObject<DbTokenLock>

org.tentackle.persist.lock.DbTokenLock

All Implemented Interfaces:

Serializable, Comparable<DbTokenLock>, ModificationLoggable, org.tentackle.misc.Identifiable, org.tentackle.misc.Immutable, org.tentackle.misc.SerialNumbered, TokenLock, org.tentackle.session.SessionDependable, org.tentackle.session.SessionProvider

@ClassId(10)
@TableName("tokenlock")
public class DbTokenLock
extends AbstractDbObject<DbTokenLock>
implements TokenLock

Table holding the token locks.

A TokenLock is an add-on to the editedBy/Since/Expiry-token in PDOs.
TokenLocks are maintained by the LockManager.
The ID of the TokenLock is the same as the PDO being locked.
The serial is not related to the PDO, starts at 1 and is incremented whenever lockedBy, lockedSince or lockExpiry changes.
Notice the [NOPKEY] to suppress the generation of the default primary key on id. Instead the index is unique on (id, pdoclassid). Thus, it is still allowed that objects of different classes share the same id.

Notice, that this table is only used in servers, never in remote clients or simple 2-tier applications.

Author:

harald

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static DbObjectClassVariables<DbTokenLock>	CLASSVARIABLES	Variables common to all instances of DbTokenLock.
static String	CN_LOCKEDBY	database column name for 'lockedBy'.
static String	CN_LOCKEDSINCE	database column name for 'lockedSince'.
static String	CN_LOCKEXPIRY	database column name for 'lockExpiry'.
static String	CN_PDOCLASSID	database column name for 'pdoClassId'.

Fields inherited from class org.tentackle.dbms.AbstractDbObject

AN_CLASSID, AN_ID, AN_SERIAL, AN_TABLESERIAL, CN_CLASSID, CN_ID, CN_SERIAL, CN_TABLESERIAL, TX_DELETE_LIST, TX_DELETE_MISSING_IN_LIST, TX_DELETE_OBJECT, TX_DUMMY_UPDATE, TX_INSERT_OBJECT, TX_INSERT_PLAIN, TX_SAVE, TX_SAVE_LIST, TX_SYNC, TX_UPDATE_OBJECT, TX_UPDATE_PLAIN, TX_UPDATE_SERIAL, TX_UPDATE_SERIAL_AND_TABLESERIAL, TX_UPDATE_TABLESERIAL

Constructor Summary

Constructors

Constructor	Description
DbTokenLock()	Creates an empty modification object.
DbTokenLock(Db db)	Creates an empty modification object.

Method Summary

Modifier and Type	Method	Description
String	createInsertSql()
String	createUpdateSql()
DbObjectClassVariables<DbTokenLock>	getClassVariables()
void	getFields(ResultSetWrapper rs)
long	getLockedBy()	Gets the attribute lockedBy.
org.tentackle.common.Timestamp	getLockedSince()	Gets the attribute lockedSince.
org.tentackle.common.Timestamp	getLockExpiry()	Gets the attribute lockExpiry.
int	getPdoClassId()	Gets the attribute pdoClassId.
long	getPdoId()	Gets the object id of locked PDO.
int	setFields(PreparedStatementWrapper st)
void	setLockedBy(long lockedBy)	Sets the attribute lockedBy.
void	setLockedSince(org.tentackle.common.Timestamp lockedSince)	Sets the attribute lockedSince.
void	setLockExpiry(org.tentackle.common.Timestamp lockExpiry)	Sets the attribute lockExpiry.
void	setPdoClassId(int pdoClassId)	Sets the attribute pdoClassId.

Methods inherited from class org.tentackle.dbms.AbstractDbObject

acceptPersistenceVisitor, addPropertyListener, addPropertyListener, alignComponents, assertMutable, assertNew, assertNotNew, assertNotOverloaded, assertNotRemote, assertNumberOfRowsAffected, assertPersistable, assertRemote, assertThisRowAffected, attributesModified, clearOnRemoteSave, compareTo, countModification, createAttributesInSnapshot, createDeleteAllSql, createDeleteSql, createDummyUpdateSql, createPreparedStatement, createPreparedStatement, createPropertySupport, createSelectAllByIdInnerSql, createSelectAllIdSerialInnerSql, createSelectAllInnerSql, createSelectExpiredTableSerials1Sql, createSelectExpiredTableSerials2Sql, createSelectIdInnerSql, createSelectMaxIdSql, createSelectMaxTableSerialSql, createSelectObjectsWithExpiredTableSerialsSql, createSelectSerialSql, createSelectSql, createSqlUpdate, createUpdateAndSetSerialSql, createUpdateSerialAndTableSerialSql, createUpdateSerialSql, deleteImpl, deleteObject, deletePlain, deleteReferencedRelations, deleteReferencingRelations, differsPersisted, dummyUpdate, equals, finishModification, finishNotUpdated, firePropertyChange, getBackend, getClassBaseName, getClassId, getColumnCount, getExpirationBacklog, getExpiredTableSerials, getId, getIdSource, getImmutableLoggingLevel, getModificationCount, getModificationLog, getPreparedStatement, getPreparedStatement, getPropertySupport, getRemoteDelegate, getSerial, getSession, getSessionHolder, getTableName, getTableSerial, hashCode, initModification, insertImpl, insertObject, insertPlain, isCopy, isCountingModification, isDeleted, isEntity, isFinallyImmutable, isForcedModified, isFromThisJVM, isIdValid, isImmutable, isLoggingModification, isModified, isNew, isOverloadable, isPersistable, isReferenced, isRemovable, isSessionImmutable, isStatementAlwaysPrepared, isTableSerialProvided, isTracked, isUpdateNecessary, isUpdatingSerialEvenIfNotModified, isVirgin, loadLazyReferences, logModification, markDeleted, newId, newInstance, newInstance, newInstance, persistObject, prepareDelete, prepareSave, prepareSetFields, readFromResultSetWrapper, reloadObject, reloadObjectForUpdate, removeAllPropertyListeners, removePropertyListener, removePropertyListener, reserveId, reserveId, resultAllIdSerial, resultAllObjects, resultObjectsWithExpiredTableSerials, revertAttributesToSnapshot, saveObject, saveReferencedRelations, saveReferencingRelations, selectAllIdSerial, selectAllObjects, selectExpiredTableSerials, selectExpiredTableSerials, selectMaxId, selectMaxTableSerial, selectNextObject, selectObject, selectObjectForUpdate, selectObjectsWithExpiredTableSerials, selectSerial, setClassId, setFinallyImmutable, setId, setImmutable, setImmutableLoggingLevel, setModificationLog, setModified, setOverloadable, setSerial, setSession, setSessionHolder, setSessionImmutable, setStatementAlwaysPrepared, setTableSerial, toGenericString, toIdString, toString, unmarkDeleted, updateImpl, updateObject, updatePlain, updateSerial, updateSerial, updateSerialAndTableSerial

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.tentackle.dbms.ModificationLoggable

createModificationLog

Field Detail

CLASSVARIABLES

public static final DbObjectClassVariables<DbTokenLock> CLASSVARIABLES

Variables common to all instances of DbTokenLock.

CN_PDOCLASSID

public static final String CN_PDOCLASSID

database column name for 'pdoClassId'.

See Also:

Constant Field Values

CN_LOCKEDBY

public static final String CN_LOCKEDBY

database column name for 'lockedBy'.

See Also:

Constant Field Values

CN_LOCKEDSINCE

public static final String CN_LOCKEDSINCE

database column name for 'lockedSince'.

See Also:

Constant Field Values

CN_LOCKEXPIRY

public static final String CN_LOCKEXPIRY

database column name for 'lockExpiry'.

See Also:

Constant Field Values

Constructor Detail

DbTokenLock

public DbTokenLock(Db db)

Creates an empty modification object.

Parameters:

db - the database connection

DbTokenLock

public DbTokenLock()

Creates an empty modification object.

Method Detail

getClassVariables

public DbObjectClassVariables<DbTokenLock> getClassVariables()

Overrides:

getClassVariables in class AbstractDbObject<DbTokenLock>

getFields

public void getFields(ResultSetWrapper rs)

Overrides:

getFields in class AbstractDbObject<DbTokenLock>

setFields

public int setFields(PreparedStatementWrapper st)

Overrides:

setFields in class AbstractDbObject<DbTokenLock>

createInsertSql

public String createInsertSql()

Overrides:

createInsertSql in class AbstractDbObject<DbTokenLock>

createUpdateSql

public String createUpdateSql()

Overrides:

createUpdateSql in class AbstractDbObject<DbTokenLock>

getPdoClassId

public int getPdoClassId()

Gets the attribute pdoClassId.

Specified by:

getPdoClassId in interface TokenLock

Returns:

class ID of the PDO

setPdoClassId

public void setPdoClassId(int pdoClassId)

Sets the attribute pdoClassId.

Parameters:

pdoClassId - class ID of the PDO

getLockedBy

public long getLockedBy()

Gets the attribute lockedBy.

Specified by:

getLockedBy in interface TokenLock

Returns:

userId of token lock holder

setLockedBy

public void setLockedBy(long lockedBy)

Sets the attribute lockedBy.

Parameters:

lockedBy - userId of token lock holder

getLockedSince

public org.tentackle.common.Timestamp getLockedSince()

Gets the attribute lockedSince.

Specified by:

getLockedSince in interface TokenLock

Returns:

time since token lock given to user

setLockedSince

public void setLockedSince(org.tentackle.common.Timestamp lockedSince)

Sets the attribute lockedSince.

Parameters:

lockedSince - time since token lock given to user

getLockExpiry

public org.tentackle.common.Timestamp getLockExpiry()

Gets the attribute lockExpiry.

Specified by:

getLockExpiry in interface TokenLock

Returns:

time when token lock expires

setLockExpiry

public void setLockExpiry(org.tentackle.common.Timestamp lockExpiry)

Sets the attribute lockExpiry.

Parameters:

lockExpiry - time when token lock expires

getPdoId

public long getPdoId()

Description copied from interface: TokenLock

Gets the object id of locked PDO.

Specified by:

getPdoId in interface TokenLock

Returns:

the object id