----- Original Message -----
Sent: Thursday, April 20, 2000 2:25
AM
Subject: Re: Applet-servlet doPost using
ObjectStreams and MS Personal Web server
Which we did. When we query the database and receive the
resultset, we
create an instance of the home made
class TableContent, which contains an
array of object
(Object[][]) which contains the rows and columns of the
resultset.
However, to create this table, we have to count the records in
the result
set. In JDBC 1.0, there are no methods to
count the records so we have to
perform the query
twice. But we are now working a way to avoid this. But
that conversion is very long. Actually, just going through the
resultset
takes a long time.
When transmitting data, we try to keep it to the TableContent
instance, plus
a Hashtable containig additionnal info.
All the keys in the hashtable are
strings as well as
most of the values (sometimes a Boolean or an Integer).
This data is kept in an instance we call ParamData, which
inherits from
ParamlessData (contains only a return
code) which inherits from GenericData
(Abstract
class).
In C++, using Abstract classes is very slow. In Java, is does
not matter,
however, dos it matter for Serialization
?
Max.
> -----Original Message-----
>
Subject: Re: Applet-servlet doPost using ObjectStreams and MS Personal
> Web server
>
>
> Some time ago on a similar project we
on serialized vectors.
> it
was much
> faster than trying to send recordsets
back and forth.
>
> You
can write a "recordset like" wrapper around the incoming
> vector if you
> need more traversing
features than vectors accommodate
>
> regards,
> john d.
haro
> AGENCY.COM
