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From "Susan Cline (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-314) eclipse plugin needs improved network server process handling
Date Wed, 08 Jun 2005 00:22:41 GMT
    [ http://issues.apache.org/jira/browse/DERBY-314?page=comments#action_12312971 ] 

Susan Cline commented on DERBY-314:
-----------------------------------

Attached is a patch to resolve the problem with the Derby UI plugin where the network server
can be started on multiple ports for the same Eclipse project and not being able to stop a
running network server for a project.

I'd appreciate it is someone could review it, and if it looks okay, commit it.

The fix changes the behaviour to the following:

1) Only one network server can be started per project.

2) Once a network server is started for a project it must be stopped before any of it's settings
(port, host and derby.system.home) can be changed.

3) If a user tries to change these settings when the network server is running they will be
notified
that they cannot change them, and the text fields become uneditable.

Testing:

Manually tested this scenario:

Started a network server for a project
Attempted to change the port for the project
   This fails - the textfields are uneditable and a Pop-up box states the server must be stopped
Stopped the network server
Changed the port number
Restarted the network server on the new port number
Stopped the network server on this port number

Created a second project and modified the port number to be the same as the
server running on the first project.
The console window explains this fails because a server is already running on this port.

Output from svn stat:

M      plugins\eclipse\org.apache.derby.ui\src\org\apache\derby\ui\common\Messages.java
M      plugins\eclipse\org.apache.derby.ui\src\org\apache\derby\ui\properties\DerbyPropertiesPage.java

Susan

Patch attached.


> eclipse plugin needs improved network server process handling
> -------------------------------------------------------------
>
>          Key: DERBY-314
>          URL: http://issues.apache.org/jira/browse/DERBY-314
>      Project: Derby
>         Type: Bug
>   Components: Tools
>     Versions: 10.0.2.0
>  Environment: windows, eclipse 301, jdk142
>     Reporter: Myrna van Lunteren
>     Assignee: Susan Cline
>     Priority: Minor
>  Attachments: plugins_networkserver.diff
>
> The eclipse plugin allows you to create multiple network server processes within the
same project through a gap in the checking mechanism, but you can't close all those you create
that way from within eclipse.
> To duplicate do the following:
> - setup the plugin and apply the eclipse nature to a project
> - start network server on the default port.
> - switch the port number using the derby preferences e.g. to 1528
> - go to the derby task - you see that the networkserver start/stop is a toggle, and because
last time you started a networkserver process, it is now on 'stop'. Run the 'stop Networkserver.
This will fail, because network server is not running on port 1528, so cannot be stopped.
> The toggle will now go back to 'start'.
> - start networkserver on port 1528.
> - trying this 'trick' in reverse - i.e. for the start - does not work, if the start fails,
the toggle remains on 'start'.

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