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Posted to user@cayenne.apache.org by Øyvind Harboe <oy...@zylin.com> on 2006/08/15 21:49:52 UTC
TRUE & FALSE Expression
Is there a way to create an expression that is TRUE or FALSE?
ExpressionFactory.expTrue/False() -> always true/false.
This would be useful when writing functions that e.g. return an
Expression whether some part or the complete list of records should
be returned.
--
Øyvind Harboe
http://www.zylin.com
Re: TRUE & FALSE Expression
Posted by Andrus Adamchik <an...@objectstyle.org>.
new ASTScalar(Boolean.TRUE) should do the trick.
Andrus
On Aug 15, 2006, at 3:57 PM, Øyvind Harboe wrote:
> On 8/15/06, Mike Kienenberger <mk...@gmail.com> wrote:
>> I don't understand what you're asking.
>>
>> Can you give a concrete and specific example?
>
> Here I start off with TRUE and then reduce the matching set using
> andExp().
>
> Expression e=ExpressionFactory.expTrue();
>
> if (xxx)
> {
> e=e.andExp(....);
> }
>
> if (yyy)
> {
> e=e.andExp(....);
> }
>
>
> return e;
>
>
> --
> Øyvind Harboe
> http://www.zylin.com
>
Re: TRUE & FALSE Expression
Posted by Øyvind Harboe <oy...@zylin.com>.
On 8/15/06, Mike Kienenberger <mk...@gmail.com> wrote:
> I don't understand what you're asking.
>
> Can you give a concrete and specific example?
Here I start off with TRUE and then reduce the matching set using andExp().
Expression e=ExpressionFactory.expTrue();
if (xxx)
{
e=e.andExp(....);
}
if (yyy)
{
e=e.andExp(....);
}
return e;
--
Øyvind Harboe
http://www.zylin.com
Re: TRUE & FALSE Expression
Posted by Mike Kienenberger <mk...@gmail.com>.
I don't understand what you're asking.
Can you give a concrete and specific example?
On 8/15/06, Øyvind Harboe <oy...@zylin.com> wrote:
> Is there a way to create an expression that is TRUE or FALSE?
>
> ExpressionFactory.expTrue/False() -> always true/false.
>
> This would be useful when writing functions that e.g. return an
> Expression whether some part or the complete list of records should
> be returned.
>
> --
> Øyvind Harboe
> http://www.zylin.com
>