17 Sep
2009
17 Sep
'09
11:46 a.m.
Steven Calkins wrote:
-----Ursprüngliche Nachricht-----
Von: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] Im Auftrag von Sergiu
Dumitriu
Gesendet: Donnerstag, 17. September 2009 00:29
An: XWiki Users
Betreff: Re: [xwiki-users] 3 x XWiki questions from a newbie
Christophe FRAULE wrote:
Hello,
I'm a newbie with XWiki and I'm mostly experimenting with it so see if
and how we could use it internally.
I'm running XWiki 1.9.3.22597 on Tomcat6 with Fedora 11/MySQL 5.1.37
and had encountered no particular problem except that I have to launch
and run the OpenOffice server externally on a regular account because
it would not start when launched by XWiki. I suspect it's a memory
access right issue because launching manually from the tomcat account
I get this
-sh-4.0$ /usr/bin/soffice -headless
-accept=socket,host=127.0.0.1,port=8100;urp; -nofirststartwizard
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
creation of executable memory area failed: Permission denied
It's just the way the tomcat account is set I believe. (Seeing no
xwiki user, I assume xwiki is using the tomcat account to launch soffice).
I have 3 x questions regarding XWiki:
1) We want to use 'spaces' (no virtual XWiki) to create boundaries
between what users can see. I have created Space A, User A and
configured access rights so that User A can access Space A only. The
problem is that when User A log into XWiki, XWiki returns and error
message because User A tries to land on the main page =>
a. Can we configure XWiki so that User A automatically lands on Space
A when login ? If yes, how ?
You can write a little script instead of the default content of Main.WebHome, one which
computes the right space for the current user, and redirects there. Something like:
#set($space = $context.user.substring($context.user.indexOf('.')))
#set($space = "${space.substring(1)}.WebHome")
$response.sendRedirect($xwiki.getURL($space))
b. I assume also that performing a search User A
will not be able to
see anything out of his user space A. Right ?
It depends. The default search pages filter documents according to the user rights, but a
user can write his own query to retrieve all document names, although he won't be able
to access the content of those documents. If document names should also be private, it can
easily be fixed by changing the Java code a bit (and actually it should).
2) I have made a quick Groovy/SQL test polling a rather large table out
of an external database and displaying the result into HTML on XWiki.
Scrolling down the dynamically generated XWiki HTML table, I suddenly
got into a black hole or let's say the end of the XWiki web page =>
a. What is the way in XWiki to control the maximum length/size (or
maximum characters ?) of a Web page ?
The limit for the document content is a soft one: at least 200k characters, which is
rounded up to the equivalent database data type, which for MySQL becomes mediumtext, large
enough to hold 16M. Then, there is the max packet size, which is configured on the server,
and it is not set by XWiki.
I've had this problem as well, but only with very long pages. If e.g. an html page is
very long, a black hole appears in XWiki, but not when viewed directly in Firefox. --
Steven Calkins
If you're talking about a skin issue, meaning that the page suddenly ends, I think
somebody else reported a similar problem a long time ago, but I don't remember what
was the cause, and whether it was fixed or not. Can you be more specific about what's
happening?
3) Is it possible to programmatically add pages into Xwiki based on the
content of an external database. The idea here is to run a script (via Xwiki
scheduler ?) to pull records out of an external database. For each (new)
record, then a new XWiki page would be created which users could edit to
bind their own additional pieces of information. When a database record is
deleted, the corresponding XWiki pages would be move to the 'gone' space.
Yes, it is possible, but this requires more time to write. A few
pointers: there is an SQL plugin for XWiki which allows you to connect
to an external database, there is the task scheduler which allows you to
execute jobs at a given time/period, and the API allows you to
manipulate documents as you like: create, rename, change, delete, etc.
--
Sergiu Dumitriu
http://purl.org/net/sergiu/
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