Re: [Php-java-bridge-users] Confused about upgrading to 5.4.4.2 from 3.x

[<php...@li...>]

Hi,

> 1. What is object->value autoconversion?

Automatic conversion to a value of some primitive type.
Please see section "type juggling" in the php manual.

> 2. What proposed hook?

Please see http://wiki.php.net/rfc/class_casting_to_scalar

> "major interna infrastructure change" from 3.x to 4.x > and didn't see any
docs or upgrade guides to inform > me

Please see the NEWS entry for version 5.0.0. Quote: "This version is no
longer backward compatible with earlier ..."

> But what does it *do*? I've looked through the

It forces a full round-trip for any java method/function returning a value
rather than an object.

> Should I just *cast* everything? Only when the

Err, no. I have mentioned the cast to explain the problem that php5 has and
how this is going to be fixed.

The only changes you should be aware of are 1. Undeclared exceptions cannot
be caught and 2. No automatic java -> php value conversion. Use
java_values(...) to retrieve the value from a java proxy.
Please see the news entry for version 5.0.0 for details.

I know that these two restrictions are annoying for those who upgrade from
earlier versions, but until php doesn't contain the necessary hooks, we must
use what's available in php.

Regards,
Jost Boekemeier

14. Jul 2009 3:02 nachm. schrieb am <
php...@li...>:

>> So why the sudden infinite loop bug? > > In PHP5 object->value
autoconversion only works for stri...
1. What is object->value autoconversion? Do you mean duck typing from
$obj to typed values?
2. What proposed hook?
3. We've used this on PHP5 the entire time.

>> took me and someone else about 10-12 hours of > > I m sorry for the
inconvenience, but we've had...
Our use of the bridge has been running perfectly for 2 years and we
just haven't had to touch it. I was unaware of the "major internal
infrastructure change" from 3.x to 4.x and didn't see any docs or
upgrade guides to inform me.

>> Simply adding the JAVA_PREFER_VALES=true fixed the > > We will switch it
on as soon as possible....
But what does it *do*? I've looked through the Java.inc code but it's
just not obvious what this actually does.

Would you recommend that I upgrade my code that uses the bridge to
work *without* this setting? Does it confer any advantages?

Is there a simple guide somewhere that explains what you have to
understand about the bridge to make things work in PHP?

I have scoured the web site but frankly I just don't see clear
instructions on the best practices for using the bridge.

Should I just *cast* everything? Only when the expected value is *not*
a string? When should you use java_values vs not?

I finally see some information regarding this in the Client API docs,
but API docs aren't really good for getting started. I'd think it'd be
useful to have a small 1-page "client user guide" with a handful of
best practices for all of the requisite type-juggling which isn't at
all an *expected* thing to need to do.

Please understand that these criticisms come from love. The bridge is
an amazing piece of software. It's run flawlessly for 2-3 years for
us. But every time I use it I find it really confusing to try to get
running and I feel that a small "guide" from the developers would save
me (and other users) *tons* of time and frustration. I would write it
myself for the project but at this point it'd just be terribly wrong!

Regards,

Alan

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