I am dropping my original proposal and if Eric does not come up with a
preferred solution soon, we will probably accept yours. I have some
question on the toString() method. Can the code be structured to append
to a common StringBuffer? As few conversion between String and
StringBuffer as possible is a desired goal.
john mcnally
Florian Lindauer wrote:
>
> John McNally wrote:
> >
> > I think a simple solution can be implemented. With the proposals
> > currently in the works I do not see a reason to completely redesign
> > Criteria. How about a flag to note which method was called first then
> > that condition will be given the higher priority? I think that would be
> > fairly intuitive, though I have not used the new convenience methods and
> > do not know if it is as workable/intuitive as I imagine.
>
> In my last post (perhaps you posted more ore less at the same time)
> I mentioned that I thought of such a flag, too. But, this only holds
> for expressions with a depth of two, like the discussed example,
> or perhaps for some special expressions of greater depths, if you
> exactly know how to construct them - but never generally.
> Imagine that:
>
> ((a<1 or b<2) and (c<3 or d<4)) or ((a>5 or b>6) and (c>7 or d>8))
>
> With a1.or(b2).and(c3.or(d4)) you get it right, as the and-chain
> (containing c3-(and)-c4) is marked as binding less than the or-chain
> (b2).
> As soon as you again call or(), the new thing is appended to the back
> of the or-chain and you again would have to change the flag to mark the
> or-chain to bind less. The result:
>
> ((a<1 and (c<3 or d<4)) or (b2 or ((a>5 or b>6) and (c>7 or d>8)))
>
> I hope, reading Erics and my former posts again, we can convince you
> there is a conceptual problem achieving general where-expressions with
> the given criterion-linkage concept.
>
> And still I hope after further examination you both come to the
> decision that my diff can be added without risk but only benefits.
>
> The above example:
>
> Criteria.Connector
> con1=crit.getNewConnector(a1.or(b2),c3.or(d4),Criteria.CTYPE_AND);
> Criteria.Connector
> con2=crit.getNewConnector(a5.or(b6),c7.or(d8),Criteria.CTYPE_AND);
> crit.add(crit.getNewConnector(con1,con2,Criteria.CONN_TYPE_OR));
>
> --
> Florian Lindauer
> _________________________________________
> SecureNet GmbH * http://www.secure-net.de
> Phone +49 89/32133-662 * [EMAIL PROTECTED]
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
