Java Code Examples for org.hibernate.LockMode#greaterThan()

The following examples show how to use org.hibernate.LockMode#greaterThan() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: Cache71Dialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// InterSystems Cache' does not current support "SELECT ... FOR UPDATE" syntax...
	// Set your transaction mode to READ_COMMITTED before using
	if ( lockMode==LockMode.PESSIMISTIC_FORCE_INCREMENT) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_WRITE) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_READ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC) {
		return new OptimisticLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC_FORCE_INCREMENT) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 2

Source File: TimesTenDialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// TimesTen has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode == LockMode.PESSIMISTIC_FORCE_INCREMENT ) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.PESSIMISTIC_WRITE ) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.PESSIMISTIC_READ ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.OPTIMISTIC ) {
		return new OptimisticLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.OPTIMISTIC_FORCE_INCREMENT ) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 3

Source File: PointbaseDialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Pointbase has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode==LockMode.PESSIMISTIC_FORCE_INCREMENT) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_WRITE) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_READ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC) {
		return new OptimisticLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC_FORCE_INCREMENT) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 4

Source File: RDMSOS2200Dialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// RDMS has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode == LockMode.PESSIMISTIC_FORCE_INCREMENT ) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.PESSIMISTIC_WRITE ) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.PESSIMISTIC_READ ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.OPTIMISTIC ) {
		return new OptimisticLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode == LockMode.OPTIMISTIC_FORCE_INCREMENT ) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode );
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 5

Source File: MckoiDialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Mckoi has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode==LockMode.PESSIMISTIC_FORCE_INCREMENT) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_WRITE) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_READ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC) {
		return new OptimisticLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC_FORCE_INCREMENT) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 6

Source File: Dialect.java From lams with GNU General Public License v2.0

6 votes

/**
 * Get the <tt>FOR UPDATE OF column_list</tt> fragment appropriate for this
 * dialect given the aliases of the columns to be write locked.
 *
 * @param aliases The columns to be write locked.
 * @param lockOptions the lock options to apply
 * @return The appropriate <tt>FOR UPDATE OF column_list</tt> clause string.
 */
@SuppressWarnings({"unchecked", "UnusedParameters"})
public String getForUpdateString(String aliases, LockOptions lockOptions) {
	LockMode lockMode = lockOptions.getLockMode();
	final Iterator<Map.Entry<String, LockMode>> itr = lockOptions.getAliasLockIterator();
	while ( itr.hasNext() ) {
		// seek the highest lock mode
		final Map.Entry<String, LockMode>entry = itr.next();
		final LockMode lm = entry.getValue();
		if ( lm.greaterThan( lockMode ) ) {
			lockMode = lm;
		}
	}
	lockOptions.setLockMode( lockMode );
	return getForUpdateString( lockOptions );
}

Example 7

Source File: FrontBaseDialect.java From lams with GNU General Public License v2.0

6 votes

@Override
public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Frontbase has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode==LockMode.PESSIMISTIC_FORCE_INCREMENT) {
		return new PessimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_WRITE) {
		return new PessimisticWriteUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.PESSIMISTIC_READ) {
		return new PessimisticReadUpdateLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC) {
		return new OptimisticLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode==LockMode.OPTIMISTIC_FORCE_INCREMENT) {
		return new OptimisticForceIncrementLockingStrategy( lockable, lockMode);
	}
	else if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 8

Source File: AbstractTransactSQLDialect.java From lams with GNU General Public License v2.0

5 votes

@Override
public String applyLocksToSql(String sql, LockOptions aliasedLockOptions, Map<String, String[]> keyColumnNames) {
	// TODO:  merge additional lockoptions support in Dialect.applyLocksToSql
	final Iterator itr = aliasedLockOptions.getAliasLockIterator();
	final StringBuilder buffer = new StringBuilder( sql );

	while ( itr.hasNext() ) {
		final Map.Entry entry = (Map.Entry) itr.next();
		final LockMode lockMode = (LockMode) entry.getValue();
		if ( lockMode.greaterThan( LockMode.READ ) ) {
			final String alias = (String) entry.getKey();
			int start = -1;
			int end = -1;
			if ( sql.endsWith( " " + alias ) ) {
				start = ( buffer.length() - alias.length() );
				end = start + alias.length();
			}
			else {
				int position = buffer.indexOf( " " + alias + " " );
				if ( position <= -1 ) {
					position = buffer.indexOf( " " + alias + "," );
				}
				if ( position > -1 ) {
					start = position + 1;
					end = start + alias.length();
				}
			}

			if ( start > -1 ) {
				final String lockHint = appendLockHint( aliasedLockOptions, alias );
				buffer.replace( start, end, lockHint );
			}
		}
	}
	return buffer.toString();
}

Example 9

Source File: FrontBaseDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Frontbase has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 10

Source File: MckoiDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Mckoi has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 11

Source File: RDMSOS2200Dialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// RDMS has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 12

Source File: SQLServerDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public String appendLockHint(LockMode mode, String tableName) {
	if ( mode.greaterThan( LockMode.READ ) ) {
		// does this need holdlock also? : return tableName + " with (updlock, rowlock, holdlock)";
		return tableName + " with (updlock, rowlock)";
	}
	else {
		return tableName;
	}
}

Example 13

Source File: PointbaseDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// Pointbase has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 14

Source File: TimesTenDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// TimesTen has no known variation of a "SELECT ... FOR UPDATE" syntax...
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 15

Source File: SybaseDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public String applyLocksToSql(String sql, Map aliasedLockModes, Map keyColumnNames) {
	Iterator itr = aliasedLockModes.entrySet().iterator();
	StringBuffer buffer = new StringBuffer( sql );
	int correction = 0;
	while ( itr.hasNext() ) {
		final Map.Entry entry = ( Map.Entry ) itr.next();
		final LockMode lockMode = ( LockMode ) entry.getValue();
		if ( lockMode.greaterThan( LockMode.READ ) ) {
			final String alias = ( String ) entry.getKey();
			int start = -1, end = -1;
			if ( sql.endsWith( " " + alias ) ) {
				start = ( sql.length() - alias.length() ) + correction;
				end = start + alias.length();
			}
			else {
				int position = sql.indexOf( " " + alias + " " );
				if ( position <= -1 ) {
					position = sql.indexOf( " " + alias + "," );
				}
				if ( position > -1 ) {
					start = position + correction + 1;
					end = start + alias.length();
				}
			}

			if ( start > -1 ) {
				final String lockHint = appendLockHint( lockMode, alias );
				buffer.replace( start, end, lockHint );
				correction += ( lockHint.length() - alias.length() );
			}
		}
	}
	return buffer.toString();
}

Example 16

Source File: SybaseDialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public String appendLockHint(LockMode mode, String tableName) {
	if ( mode.greaterThan( LockMode.READ ) ) {
		return tableName + " holdlock";
	}
	else {
		return tableName;
	}
}

Example 17

Source File: Cache71Dialect.java From cacheonix-core with GNU Lesser General Public License v2.1

5 votes

public LockingStrategy getLockingStrategy(Lockable lockable, LockMode lockMode) {
	// InterSystems Cache' does not current support "SELECT ... FOR UPDATE" syntax...
	// Set your transaction mode to READ_COMMITTED before using
	if ( lockMode.greaterThan( LockMode.READ ) ) {
		return new UpdateLockingStrategy( lockable, lockMode );
	}
	else {
		return new SelectLockingStrategy( lockable, lockMode );
	}
}

Example 18

Source File: AbstractLockUpgradeEventListener.java From lams with GNU General Public License v2.0

4 votes

/**
 * Performs a pessimistic lock upgrade on a given entity, if needed.
 *
 * @param object The entity for which to upgrade the lock.
 * @param entry The entity's EntityEntry instance.
 * @param lockOptions contains the requested lock mode.
 * @param source The session which is the source of the event being processed.
 */
protected void upgradeLock(Object object, EntityEntry entry, LockOptions lockOptions, EventSource source) {

	LockMode requestedLockMode = lockOptions.getLockMode();
	if ( requestedLockMode.greaterThan( entry.getLockMode() ) ) {
		// The user requested a "greater" (i.e. more restrictive) form of
		// pessimistic lock

		if ( entry.getStatus() != Status.MANAGED ) {
			throw new ObjectDeletedException(
					"attempted to lock a deleted instance",
					entry.getId(),
					entry.getPersister().getEntityName()
			);
		}

		final EntityPersister persister = entry.getPersister();

		if ( log.isTraceEnabled() ) {
			log.tracev(
					"Locking {0} in mode: {1}",
					MessageHelper.infoString( persister, entry.getId(), source.getFactory() ),
					requestedLockMode
			);
		}

		final boolean cachingEnabled = persister.canWriteToCache();
		SoftLock lock = null;
		Object ck = null;
		try {
			if ( cachingEnabled ) {
				EntityDataAccess cache = persister.getCacheAccessStrategy();
				ck = cache.generateCacheKey( entry.getId(), persister, source.getFactory(), source.getTenantIdentifier() );
				lock = cache.lockItem( source, ck, entry.getVersion() );
			}

			if ( persister.isVersioned() && requestedLockMode == LockMode.FORCE  ) {
				// todo : should we check the current isolation mode explicitly?
				Object nextVersion = persister.forceVersionIncrement(
						entry.getId(), entry.getVersion(), source
				);
				entry.forceLocked( object, nextVersion );
			}
			else {
				persister.lock( entry.getId(), entry.getVersion(), object, lockOptions, source );
			}
			entry.setLockMode(requestedLockMode);
		}
		finally {
			// the database now holds a lock + the object is flushed from the cache,
			// so release the soft lock
			if ( cachingEnabled ) {
				persister.getCacheAccessStrategy().unlockItem( source, ck, lock );
			}
		}

	}
}

Example 19

Source File: DefaultReactiveLockEventListener.java From hibernate-reactive with GNU Lesser General Public License v2.1

4 votes

/**
 * Performs a pessimistic lock upgrade on a given entity, if needed.
 *
 * @param object The entity for which to upgrade the lock.
 * @param entry The entity's EntityEntry instance.
 * @param lockOptions contains the requested lock mode.
 * @param source The session which is the source of the event being processed.
 */
protected CompletionStage<Void> upgradeLock(Object object, EntityEntry entry,
											LockOptions lockOptions,
											EventSource source) {

	LockMode requestedLockMode = lockOptions.getLockMode();
	if ( requestedLockMode.greaterThan( entry.getLockMode() ) ) {
		// The user requested a "greater" (i.e. more restrictive) form of
		// pessimistic lock

		if ( entry.getStatus() != Status.MANAGED ) {
			throw new ObjectDeletedException(
					"attempted to lock a deleted instance",
					entry.getId(),
					entry.getPersister().getEntityName()
			);
		}

		final EntityPersister persister = entry.getPersister();

		if ( log.isTraceEnabled() ) {
			log.tracev(
					"Locking {0} in mode: {1}",
					MessageHelper.infoString( persister, entry.getId(), source.getFactory() ),
					requestedLockMode
			);
		}

		final boolean cachingEnabled = persister.canWriteToCache();
		final SoftLock lock;
		final Object ck;
		if ( cachingEnabled ) {
			EntityDataAccess cache = persister.getCacheAccessStrategy();
			ck = cache.generateCacheKey(
					entry.getId(),
					persister,
					source.getFactory(),
					source.getTenantIdentifier()
			);
			lock = cache.lockItem( source, ck, entry.getVersion() );
		}
		else {
			lock = null;
			ck = null;
		}

		return ((ReactiveEntityPersister) persister).lockReactive(
				entry.getId(),
				entry.getVersion(),
				object,
				lockOptions,
				source
		).thenAccept( v -> entry.setLockMode(requestedLockMode) )
				.whenComplete( (r, e) -> {
					// the database now holds a lock + the object is flushed from the cache,
					// so release the soft lock
					if ( cachingEnabled ) {
						persister.getCacheAccessStrategy().unlockItem( source, ck, lock );
					}
				} );

	}
	else {
		return CompletionStages.nullFuture();
	}
}

Example 20

Source File: AbstractLockUpgradeEventListener.java From cacheonix-core with GNU Lesser General Public License v2.1

4 votes

/**
 * Performs a pessimistic lock upgrade on a given entity, if needed.
 *
 * @param object The entity for which to upgrade the lock.
 * @param entry The entity's EntityEntry instance.
 * @param requestedLockMode The lock mode being requested for locking.
 * @param source The session which is the source of the event being processed.
 * @throws HibernateException
 */
protected void upgradeLock(Object object, EntityEntry entry, LockMode requestedLockMode, SessionImplementor source)
throws HibernateException {

	if ( requestedLockMode.greaterThan( entry.getLockMode() ) ) {
		// The user requested a "greater" (i.e. more restrictive) form of
		// pessimistic lock

		if ( entry.getStatus() != Status.MANAGED ) {
			throw new ObjectDeletedException(
					"attempted to lock a deleted instance",
					entry.getId(),
					entry.getPersister().getEntityName()
			);
		}

		final EntityPersister persister = entry.getPersister();

		if ( log.isTraceEnabled() )
			log.trace(
					"locking " +
					MessageHelper.infoString( persister, entry.getId(), source.getFactory() ) +
					" in mode: " +
					requestedLockMode
			);

		final CacheConcurrencyStrategy.SoftLock lock;
		final CacheKey ck;
		if ( persister.hasCache() ) {
			ck = new CacheKey( 
					entry.getId(), 
					persister.getIdentifierType(), 
					persister.getRootEntityName(), 
					source.getEntityMode(), 
					source.getFactory() 
			);
			lock = persister.getCache().lock( ck, entry.getVersion() );
		}
		else {
			ck = null;
			lock = null;
		}
		
		try {
			if ( persister.isVersioned() && requestedLockMode == LockMode.FORCE ) {
				// todo : should we check the current isolation mode explicitly?
				Object nextVersion = persister.forceVersionIncrement(
						entry.getId(), entry.getVersion(), source
				);
				entry.forceLocked( object, nextVersion );
			}
			else {
				persister.lock( entry.getId(), entry.getVersion(), object, requestedLockMode, source );
			}
			entry.setLockMode(requestedLockMode);
		}
		finally {
			// the database now holds a lock + the object is flushed from the cache,
			// so release the soft lock
			if ( persister.hasCache() ) {
				persister.getCache().release(ck, lock );
			}
		}

	}
}