logo       

Re: I need some help : exception in Type Browser: msg#00028

windows.devel.jawin

Subject: Re: I need some help : exception in Type Browser

Hi Tanveer and Josh

(first, I couldn't spot Tanveers direct mail adress, but I found this,
in a "Comments" header in the mail: T.Ali@xxxxxxxxxx, so I assume this
is the mail address I should CC to? - I assume CC's disappears in the
mails after they have been through the Jawin-mailing list machine?)

Date support might come down to using the jawin stack system and may
require
that you know the number of bytes for a date and pass pointers?

Date support have been added recently, and is available by checking out
the CVS-head as described here:
http://jawinproject.sourceforge.net/jawindeveloper.html

About the exact mapping of types from Java to native Variant types:
"If you need detailed control of how Jawin converts Java types into
native Variants the javadoc for Variant.WriteObject() must be consulted.
But please notice that the IDispatch coercion mechanism handles
scenarios where the VT_TYPE of a parameter is a not a 100% fit to a
method signature or property. Therefore there should not be any problems
by setting eg. a property requering unsigned int's with either a long or
an int." (from some of the most recent documentation, that is only
available in the CVS - docs/jawinuserguide_dispatch.html).


2. Since the invocation of servlet methods (actually I will be using
Struts action class which is a type of servlet) is through
multi-threads, does it means I will have to think about multi-threading
issues
(http://jawinproject.sourceforge.net/jawinarchitecture.html#comThreading
)?


Yes multithreading will certainly be an issue if the VB DLL is not
multithreaded. You might need to consider synchronizing access up front or
using some sort of pooling,


I have updated the documentation on threading issues too, so I will
suggest that you re-read section 6 in the jawinarchitecture.html
document from the CVS too.

Hope this helps you further
Best Regards
Morten



<Prev in Thread] Current Thread [Next in Thread>
Google Custom Search

News | FAQ | advertise