@Override
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( aliases, lockMode, lockOptions.getTimeOut() );
}	
	
protected String getForUpdateString( String aliases, LockMode lockMode, int timeout){
    	switch ( lockMode ) {
	        case UPGRADE:
	            return getForUpdateString( aliases );
	        case PESSIMISTIC_READ:
	            return getReadLockString( timeout );
	        case PESSIMISTIC_WRITE:
	            return getWriteLockString( timeout );
	        case UPGRADE_NOWAIT:
	        case FORCE:
	        case PESSIMISTIC_FORCE_INCREMENT:
	            return getForUpdateNowaitString( aliases );
	        default:
	            return "";
	    }
}