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Re-Using HSQLDB with EOModeler in a DTJC app

Subject: Re-Using HSQLDB with EOModeler in a DTJC app
From: Baiss Eric Magnusson <email@hidden>
Date: Mon, 28 Jun 2004 15:49:55 -0700

I don't read from the documentation that I can, say change the way EO's are fetched from a database from using the WebServer to using <hsqldb's> proprietary communcations protocol.

HSQLDB Web Server

This mode is used when access to the computer hosting the database server is restricted to the HTTP protocol. The only reason for using the Web Server mode is restrictions imposed by firewalls on the client or server machines and it should not be used where there are no such restrictions. The HSQLDB Web Server is a special web server that allows JDBC clients to connect via HTTP. As the HTTP protocol is stateless, connections to a web server do not have a persistent session. This limits the range of actions that can be performed on the database. Each time you issue a JDBC command, it is treated as a new connection to the database. As a result transactions cannot be rolled back.

HSQLDB Server

This is the preferred way of running a database server and the fastest one. A proprietary communications protocol is used for this mode. A command similar to those used for running tools and described above is used for running the server.

Like I don't think I could usre the HSQLDB Server mode described in their documentation.

Arturo responds:

On Jun 24, 2004, at 7:26 PM, Baiss Eric Magnusson wrote:

And here comes my real question, is it not true that the EO package
talks to the DB only through HTTP, and thus necessitates the DB to be
in WebServer mode?


I thought, according to the documentation, that the default is to talk
through HTTP.  But, all one needs to do is write one's own
com.webobjects.eodistribution.client.EODistributionChannel.  Apple
kindly provides com.webobjects.eodistribution.client.EOHTTPChannel.

But, in your above question, don't you mean that the client only talks
to the WebObjects application through HTTP?  For DTJC, the WebObjects
application plays the role of the database.


----
Baiss Eric Magnusson
<http://www.Track-Your-Finances.com>
<http://www.CascadeWebDesign.com>
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Follow-Ups:
- Re: Re-Using HSQLDB with EOModeler in a DTJC app
  - From: Ray Ackland <email@hidden>
- Re: Re-Using HSQLDB with EOModeler in a DTJC app
  - From: Arturo Pérez <email@hidden>

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