public void setPreJoinPredicate(AbstractExpression predicate)
    {
        if (predicate != null) {
            m_preJoinPredicate = predicate.clone();
        } else {
            m_preJoinPredicate = null;
        }
    }
public void setPreJoinPredicate ( AbstractExpression predicate ) { if ( predicate != null ) { m_preJoinPredicate = predicate . clone ( ) ; } else { m_preJoinPredicate = null ; } }
@param predicate the join predicate to set