public void truncate(final long len) throws SQLException {
        synchronized (this) {
            if (this.underlying == null) {
                if (len < 0) {
                    throw new SQLException("Invalid length: " + len);
                } // end of if

                return;
            } // end of if

            // ---

            this.underlying.truncate(len);
        } // end of truncate
    }
public void truncate ( final long len ) throws SQLException { synchronized ( this ) { if ( this . underlying == null ) { if ( len < 0 ) { throw new SQLException ( "Invalid length: " + len ) ; } return ; } this . underlying . truncate ( len ) ; } }
{@inheritDoc}