Forte, iiop, and java 2 woes

Question

We are running Forte 3L2, and Java 2. We'd like to make calls to a forte SO
from a Java client. We can configure the SO for export, and find the ior
file.
However, the java side never seems to work. The idl compiler for JDK 1.2.x
(idltojava, downloaded from SUN) gives lots syntax errrors, these appear
without explanation on apparently good lines. The compiler for JDK 1.3.0
(idlj) only complains about some errors coming from a escaped strings, which
I can patch around.
The java files resulting from idlj need some minor patching/renaming to
compile (Had to put some of the primitive class helpers into Framework
project manually). And then, they fail at runtime. They fail with a null
object error when run in the 1.3.0 runtime. They fail with the same CORBA
exception when run in either the JDK 1.2.2 runtime, or the naturalbridge
native java compiled runtime.
Does anybody have a specific combination of Java 2 jvm and idl compiler
which will work with Forte? Were any specific tricks needed to make it
work? I tried the technotes, but those that I found seemed out of date for
Java 2.

Answer 1

If you look at the exception information in the iiop manual it
discusses exteneded propties DefaultThrowsClause, ThrowsClause and
IsThrowable.
If you mark your exception class with IsThrowable it will show up in the
IDL as an exception. If you use either DefaultThrowsClause(project) or
ThrowsClause(method) you will get the appropriate raises in the idl.
This will cause the idl2java to produce code which will allow you to catch
the exception.
Tom.
At 09:41 AM 1/29/99 +0100, Giuseppe Sorce wrote:
>
Hi all,
I am currently working to an architecture to establish a communication
between a Forte' server and a Java client, using Visigenic's Visibroker and
IDL mode.
I have problems when I try to raise a Forte' exception from a method
invoked by the Java client; I would like the exception class
(ProductException) not to inherit from the class GenericException, because
the IDL I want to generate must have this structure:
exception ProductException {
string message;
Using this solution, the client application gets blocked waiting forever.
I am currently working with:
- Forte' 3.0.G.2 plus WebEnterprise 1.0.B
- JDK 1.1.5
- Visibroker 3.1
My question is: is it possible to raise an exception from the Forte' side
that is
compliant to the IDL mentioned above?
Of course it should be caught from the Java side.
Thank you in advance
Giuseppe Sorce
CSI Piemonte - C.so Unione Sovietica 216 - 10134 Torino - ITALY
tel. [phone]
fax [phone]
e-mail [email protected]
url http://www.csi.it
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