Java Code Examples for org.hibernate.LockOptions#SKIP_LOCKED

@Override
public String getWriteLockString(int timeout) {
	if ( timeout == LockOptions.NO_WAIT ) {
		return getForUpdateNowaitString();
	}
	else if ( timeout == LockOptions.SKIP_LOCKED ) {
		return getForUpdateSkipLockedString();
	}
	return super.getWriteLockString( timeout );
}
 

@Override
public String getWriteLockString(String aliases, int timeout) {
	if ( timeout == LockOptions.NO_WAIT ) {
		return getForUpdateNowaitString(aliases);
	}
	else if ( timeout == LockOptions.SKIP_LOCKED ) {
		return getForUpdateSkipLockedString(aliases);
	}
	return super.getWriteLockString( aliases, timeout );
}
 

@Override
public String getReadLockString(int timeout) {
	String readLockString =  " for share";
	if ( timeout == LockOptions.NO_WAIT ) {
		return readLockString + " nowait ";
	}
	else if ( timeout == LockOptions.SKIP_LOCKED ) {
		return readLockString + " skip locked ";
	}
	return readLockString;
}
 

@Override
public String getReadLockString(String aliases, int timeout) {
	String readLockString = String.format( " for share of %s ", aliases );
	if ( timeout == LockOptions.NO_WAIT ) {
		return readLockString + " nowait ";
	}
	else if ( timeout == LockOptions.SKIP_LOCKED ) {
		return readLockString + " skip locked ";
	}
	return readLockString;
}
 

@Override
public String getWriteLockString(int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return getForUpdateSkipLockedString();
	}
	else {
		return super.getWriteLockString( timeout );
	}
}
 

@Override
public String getWriteLockString(String aliases, int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return getForUpdateSkipLockedString( aliases );
	}
	else {
		return super.getWriteLockString( aliases, timeout );
	}
}
 

@Override
public String getReadLockString(int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return " for share skip locked";
	}
	else {
		return super.getReadLockString( timeout );
	}
}
 

@Override
public String getReadLockString(String aliases, int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return String.format( " for share of %s skip locked", aliases );
	}
	else {
		return super.getReadLockString( aliases, timeout );
	}
}
 

@Override
public String getWriteLockString(int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return  getForUpdateSkipLockedString();
	}
	else {
		return super.getWriteLockString( timeout );
	}
}
 

@Override
public String getWriteLockString(String aliases, int timeout) {
	if ( timeout == LockOptions.SKIP_LOCKED ) {
		return getForUpdateSkipLockedString( aliases );
	}
	else {
		return super.getWriteLockString( aliases, timeout );
	}
}
 

protected String determineSql(int timeout) {
	if ( timeout == LockOptions.WAIT_FOREVER) {
		return waitForeverSql;
	}
	else if ( timeout == LockOptions.NO_WAIT) {
		return getNoWaitSql();
	}
	else if ( timeout == LockOptions.SKIP_LOCKED) {
		return getSkipLockedSql();
	}
	else {
		return generateLockString( timeout );
	}
}
 

@Override
public String appendLockHint(LockOptions lockOptions, String tableName) {

	LockMode lockMode = lockOptions.getAliasSpecificLockMode( tableName );
	if(lockMode == null) {
		lockMode = lockOptions.getLockMode();
	}

	final String writeLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? "updlock" : "updlock, holdlock";
	final String readLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? "updlock" : "holdlock";

	final String noWaitStr = lockOptions.getTimeOut() == LockOptions.NO_WAIT ? ", nowait" : "";
	final String skipLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? ", readpast" : "";

	switch ( lockMode ) {
		case UPGRADE:
		case PESSIMISTIC_WRITE:
		case WRITE: {
			return tableName + " with (" + writeLockStr + ", rowlock" + noWaitStr + skipLockStr + ")";
		}
		case PESSIMISTIC_READ: {
			return tableName + " with (" + readLockStr + ", rowlock" + noWaitStr + skipLockStr + ")";
		}
		case UPGRADE_SKIPLOCKED:
			return tableName + " with (updlock, rowlock, readpast" + noWaitStr + ")";
		case UPGRADE_NOWAIT:
			return tableName + " with (updlock, holdlock, rowlock, nowait)";
		default: {
			return tableName;
		}
	}
}
 

private void setLockOptions(Map<String, Object> props, LockOptions options) {
	Object lockScope = props.get( JPA_LOCK_SCOPE );
	if ( lockScope instanceof String && PessimisticLockScope.valueOf( ( String ) lockScope ) == PessimisticLockScope.EXTENDED ) {
		options.setScope( true );
	}
	else if ( lockScope instanceof PessimisticLockScope ) {
		boolean extended = PessimisticLockScope.EXTENDED.equals( lockScope );
		options.setScope( extended );
	}
	else if ( lockScope != null ) {
		throw new PersistenceException( "Unable to parse " + JPA_LOCK_SCOPE + ": " + lockScope );
	}

	Object lockTimeout = props.get( JPA_LOCK_TIMEOUT );
	int timeout = 0;
	boolean timeoutSet = false;
	if ( lockTimeout instanceof String ) {
		timeout = Integer.parseInt( ( String ) lockTimeout );
		timeoutSet = true;
	}
	else if ( lockTimeout instanceof Number ) {
		timeout = ( (Number) lockTimeout ).intValue();
		timeoutSet = true;
	}
	else if ( lockTimeout != null ) {
		throw new PersistenceException( "Unable to parse " + JPA_LOCK_TIMEOUT + ": " + lockTimeout );
	}

	if ( timeoutSet ) {
		if ( timeout == LockOptions.SKIP_LOCKED ) {
			options.setTimeOut( LockOptions.SKIP_LOCKED );
		}
		else if ( timeout < 0 ) {
			options.setTimeOut( LockOptions.WAIT_FOREVER );
		}
		else if ( timeout == 0 ) {
			options.setTimeOut( LockOptions.NO_WAIT );
		}
		else {
			options.setTimeOut( timeout );
		}
	}
}