Multi-User considerations

Hi everyone,
I'm working on a system, which is supposed to add users to a database. It has a HTML-front-end and a java-servlet working behind the scenes. My problem is, that I don't know how to prevent, that the values of the global variables gets mixed up, if several users use the servlet simultaneously. I don't want to implement the SingleThread-interface, because a multi-user-model is required.
It was suggested to me, that I could use cookies to solve the problem, but since I'm rather new to servlets, I don't know how to implement that.
Basically, my question is this: Does anyone have any good examples demonstrating how to solve this sort of problem? Are there any good tutorials available on-line?

Hi again,
I still have some trouble comprehending the concepts of threads and sessions in relation to servlets.
I've written a student-registration servlet that uses the session-tracking API in it's doPost-method. That means that it identifies the current user. It attaches an object (in this case a student-object) to the session.
Later on, in the doPost-method of a different servlet, I retrieve that student-object from the session, validate it and insert it in my database. I've synchronized my database-related methods but not the doPost-method. My problem is, that I'm unsure whether its possible for a different user's invalid student-object to get inserted between my validation-procedure and the actual writing to the database? Or to re-phrase the question: Do different threads spawn different versions of the doPost-method, or do they use the same? And in that case, is it necessary for me to synchronize the doPost-method?
I hope my question is not to obscure ;-)

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[Removed for privacy]

Multi User Skype was great until the latest software upgrade, which in my opinion was actually a downgrade. It is now awful - it keeps on dropping out - then users can't connect. It is totally unreliable. Very dissappointing.
[Removed for privacy]

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Hi ...
We are running RH7 and RSC3.1 with 3 users - We identified
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Hi Fi@qldpol, and welcome to the board. With your situation,
there are two likely possibilities:
1. Was your project added to source control via RoboHelp, or
was it initially added using RoboSource Control? If it was added
from RoboSource Control, then that is the problem.
2. If #1 is not the problem, then you might be having
problems with some of the users' CPD files. First, have everyone
make backups of the local version of their project (the files
actually residing on their PCs). Then have User 2 and User 3 delete
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local files. Before they open the project, they should delete the
cpd and pss files. After they delete those files, they can open the
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every so often with some of our projects to get everyone
synchronized.
Hope that helps.
G

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Message was edited by: Kurt-Syracuse

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Many thanks.
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Set multi user column with PowerShell used to work in 2010 but no longer works in 2013

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here is the PowerShell that I use in 2010:
$web = Get-SPWeb "http://intranet"
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mmm... coffee...

Not sure but maybe something to do with casting. Below is the code snippet from one of the blogs. Try modifying your script like below and see if still you get the error
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$user1 = $w.EnsureUser("domain\user1");
$user1Value = New-Object Microsoft.SharePoint.SPFieldUserValue($w, $user1.Id, $user1.LoginName)
$user2 = $w.EnsureUser("domain\user2");
$user2Value = New-Object Microsoft.SharePoint.SPFieldUserValue($w, $user2.Id, $user2.LoginName);
$lotsofpeople.Add($user1Value);
$lotsofpeople.Add($user2Value);
$i["lotsofpeoplefield"] = $lotsofpeople;
$i.Update();
#-or-
$l.Fields["lotsofpeoplefield"].ParseAndSetValue($i,$lotsofpeople);
$i.Update();
Reference to the link
http://social.technet.microsoft.com/wiki/contents/articles/20831.sharepoint-a-complete-guide-to-getting-and-setting-fields-using-powershell.aspx
Geetanjali Arora | My blogs |

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Msg 5069, Level 16, State 1, Line 1
ALTER DATABASE statement failed.
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Hi all,
I need to know how to set Multi User Environment in the weblogic 5.1
properties file..
Here my question is..:)
1) I have a database with multiple users and having different privileges
for the users.. and i need to use all the privileges when user aceess
the database through weblogic server connectionPool.
2)According to the user privileges i need access the database tables
content and gives the frontEnd(jsp).
3)How to modify dynamically weblogic.properties file in the weblogic
5.1.
If anybody having idea reg. this issues pl...help me..
Thanks in advance
Chandu([email protected],[email protected])

Hi. A JDBC connection pool is a set of identical, interchangeable, pre-made
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applications, and another for the sales applications etc. Some do have a
separate pool for john, jane, joe etc, each with one connection. Pools
can be created and destroyed dynamically using the dynamic pool API.
Joe
softstar wrote:
>
Hi all,
I need to know how to set Multi User Environment in the weblogic 5.1
properties file..
Here my question is..:)
1) I have a database with multiple users and having different privileges
for the users.. and i need to use all the privileges when user aceess
the database through weblogic server connectionPool.
2)According to the user privileges i need access the database tables
content and gives the frontEnd(jsp).
3)How to modify dynamically weblogic.properties file in the weblogic
5.1.
If anybody having idea reg. this issues pl...help me..
Thanks in advance
Chandu([email protected],[email protected])

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Your thread pool is a pool and probably keeps
the thread alive even though the thread has nothing
after a minute toi execute - you'll have to call its
shutdown() methodThanks Oxe...
I googled that (easy when you know what the answer is) and yes the ScheduledThreadPool retains threads for re-use, so you have to check that all threads are done and then shutdown() the scheduler... like this:     while (!future.isDone()) {
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... here is the complete working class:
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledFuture;
import static java.util.concurrent.TimeUnit.*;
import java.awt.Toolkit;
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                         future.cancel(true);
               }, 3, SECONDS
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          scheduler.shutdown();
     public static void main(String[] args)
          BeeperControl bc = new BeeperControl();
          bc.beepForAMinute();
}Thanx again. Keith.

How to send one email to multi-users using JavaMail ?

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Can anyone help me to do this?
I have used the below code to send to multi-user:
Address[] toAddr = {new InternetAddress(_to),new InternetAddress (to2)};
msg.addRecipients(Message.RecipientType.TO, toAddr);
But it is static only 2 users. I want to send to multi-users dynamically taking datas from database.
I have tried by using below code but it doesn't work.....
InternetAddress[] emails;
while (resultset.next()) {
temp = resultset.getString(1);
emails.setAddress(temp);
i++;
Address[] toAddr = emails;
msg.addRecipients(Message.RecipientType.TO, toAddr);
Thank you in advance...
-ritesh

I think you're confused about some basic Java programming techniques.
There are two obvious ways to do this.
1. Call the addRecipient method in a loop.
2. Collect all the recipients in a List, convert it to an array, and call addRecipients.

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Hi all,
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Scott

edit: sorry guys, n/m..it wasn't a JRE issue after all :)

File structure and Multi-user access/control

Hi All
Currently evaluating RH. Our plan is to use RH HTML with RoboServer and either SourceSafe or Team Foundation for source control. We will be producing the "printed" manual (PDF) and publishing online help (hopefully html via RH server) from the single source layout
Given that we will edit content in RH's XHTML editor, I'm not clear on when we should create new files or the granularity of multi-user access. We have 17 apps and I plan to use a master project and merging (because we need to link to related topics in other apps).
I'm really not sure what should constitute a file in RH. First off, is access controlled at the file level?
I want to have multiple authors editing the same manual at the same time, so do I need to break the manual into multiple small files (currently it's a single word doc)?
If I do break it into multiple files, what's the best approach: 1 file per topic (or is this a requirement)?
Finally, when I come to generate the PDF, will the files be combined. (i.e. can I have different page-breaks than I have in the RH project)?
Any pointers greatly appreciated
Regards
Mark

Hi,
First off, is access controlled at the file level?
Not sure what you mean by that. In source control, you can check in/out ever file independent. Sometimes dependent files will be automatically checked out, for instance images used in the css when you check out the style sheet.
I want to have multiple authors editing the same manual at the same time, so do I need to break the manual into multiple small files (currently it's a single word doc)?
That be the idea. Anyway, it's not a good idea to have an entire RoboHelp project in a single topic. You probably want to cut up your contents into the small chunck: topics.
If I do break it into multiple files, what's the best approach: 1 file per topic (or is this a requirement)?
In RoboHelp a topic is a HTML file. RoboHelp doesn't force you to split up content into one or more topics. If you are creating help for the web, you want the information to be organized in relatively small chunck so users can quickly scan through it.
Finally, when I come to generate the PDF, will the files be combined. (i.e. can I have different page-breaks than I have in the RH project)?
Not sure what you mean by page breaks. As RoboHelp creates HTML files, there are no page breaks such as in paper manuals. When you create a PDF, you combine the topics you need into a single document.
If a PDF is required for you, you may want to consider not using RoboHelp for your sources. A PDF created by RoboHelp is useful for internal use, but it never seems to get good enough to give to customers. Personally, when a PDF version of a manual is required, I create the manual in FrameMaker and link or import the book into RoboHelp. You can also link Word documents, so you may want to play around with that before deciding whether to use Word, RoboHelp or FrameMaker for your source.
Greet,
Willam

Multi-User considerations

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