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[xwiki-devs] Re lating classes in xwiki
by Sachin Mittal 05 May '08

05 May '08

Hi, Using xwiki class editor we can create classes and package them as application. Classes can also have an entity relationship among themselves. I have few question on how can we relate classes in xwiki. Let me start by posting a simple example: Say our application has two classes Product and Review. Relationship between them is a product can have multiple reviews. Now I can relate these classes in following way: 1. Create a product document and add the product object to it. All the reviews for that product are also added to that product document as review objects. Thus I have grouped reviews to a product. 2. Create a product document and add the product object to it. For each review for that product created a review document and add review object to that review document and make review document child of product document. Thus I have arranged reviews as children of a product. 3. In the review class add a db list field, which refers to objects of product class. While creating a review object choose the right product name from the list. Thus reviews are associated to a product. Thus you can see that in each of the three ways I have related two classes. Only difference is different ways of storing them. (again presentation still can be same and I am here interested in optimal storage strategy only). So I would like to know which of the above three is the best way of relating classes. Are there any more ways of achieving the relationship I talked initially? I would like to know from people who have been developing complex applications involving relationship between several xwiki classes as what would be the best way of arranging the use case just described. Thanks Sachin ----- http://www.assembla.com/wiki/show/sachin_mittal about me: -- View this message in context: http://www.nabble.com/Relating-classes-in-xwiki-tp16851540p16851540.html Sent from the XWiki- Dev mailing list archive at Nabble.com.

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[xwiki-devs] AttachmentStore - my filesystem based implementation
by Michael Zach (TNXLabs) 05 May '08

05 May '08

Hello all, I have been looking for a way to store attachments (the binary 'content' data only) as regular files on the servers filesystem. I already read through the archives and found out so far that this is possible via writing my own implementation of the com.xpn.xwiki.store.XWikiAttachmentStoreInterface and then set have them used via settings in xwiki.cfg. (see this thread in the markmail archives: http://markmail.org/message/zyd2tpfj2x45hyxt ) What I do is just taking out the XWikiAttachmentContent content property's byte[], stream it into a file and replace the property value with the path to this file. so I need no changes to the hibernate mappings etc. ... and when reading it in, doing a file read accordingly ... So I store everything as usual with Hibernate, just the pure content is stored as file (with an unique id embedded in the filename) Q1) ... any better idea? (its working fine so far ;o) Q2) I am looking for a way to set the store implementations on a per-space basis. Or: How can the store implementation see to which space the attachment's parent page belongs and read in any config (string) for this space? Q3) Any other Interfaces I should provide a filesystem based implemention for? So far it seems I dont need to make any changes to the Recyclebin and Versioning store implementations. Q4) Is there a way to turn off caching for attachments only? I turned off caching totally with xwiki.store.cache=0 xwiki.store.cache.capacity=0 and this is a performance nightmare. But I need to turn off only the caching of attachments. Is this possible? Thank you in advance for any bit of input ;o) Michael -- View this message in context: http://www.nabble.com/AttachmentStore---my-filesystem-based-implementation-… Sent from the XWiki- Dev mailing list archive at Nabble.com.

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[xwiki-devs] XWIKI Skin Changes
by Prathap Pandian 05 May '08

05 May '08

Hi I am from India. At present i am in final year... I selected the XWIKI for my project. I want to know how to create a new skin in my XWIKI... Please Help.... -- Thanks, Prathap Pandian M

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Re: [xwiki-devs] Hashmap vs. Objects (Miscellaneous Questions)
by Kamna Jain 05 May '08

05 May '08

On the same note, I also have the following questions: The answers will help implement whichever option we choose: 1) Is there a limit on the number of members that can belong to a group? 2) How can I create a "global" hashmap (xwiki.getHashMap()) that can be referenced anywhere (any page/space) to retrieve values based on keys? 3) Can I use the $context to add some more values(needed for our project) to the hashtable? 4) I came across the following code snippet int he Wiki editor of the PanelWizard: #set($categoryMap = $xwiki.getHashMap()) #foreach($category in $categoryList) $!categoryMap.put($category, $xwiki.getArrayList()) #end I do not understand the use of "!" in the put() method. what do we achieve with this! Thanks for all help! On 5/5/08, Kamna Jain <kammy.scorpi(a)gmail.com> wrote: > > Hi All, > > This question "might" be related to the thread that has been active in the > past couple of days about the data model. > We have a similar situation with the only difference being that we want > to create lists or collections (like Groups) of certain pre- created > Objects. > The Object as a whole may/will belong to more than one such collection - > which means that if we were to use a Document to link a Collection and its > contents, then every document will have a COPY of the same object and this > is definitely not desirable for good performance - Right? > > So, in that case, we have 2 alternatives: > 1) Use the techiniques used in XWiki to create Groups: each group has > objects of class XWikiGroup with just one field that refers to the Member > name. OR > 2) Use XWiki.getHashmap() and add the Collection and its members to the > hashmap (as the Key and Value resp.) > > The XWiki API indicates that the option #2 must be used in xwiki when > Objects can not be created. > My Question is: > -> Even though I could use option #1 and create objects and add them to > the document that would represent the Collection, can I still use option #2 > because I think that it will provide better performance. Am I right in my > assumption? What should I do? > > Thanks a lot for all help! > > >

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[xwiki-devs] edit menu options question
by Jeff Gerbracht 02 May '08

02 May '08

When I'm logged in as a user with all global privilages, and I'm on a wiki page, the "edit" menu doesn't have any sub-menu items. However, when I log in as superadmin, I see sub-menu items such as "wiki", "WYSIWYG", "Inline form" etc. Is there a way to set up a user other than superadmin with this?? Thanks, Jeff

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[xwiki-devs] Xwiki Changed from Version 1.0 to version 9.841.
by Pramit Kumar 02 May '08

02 May '08

Hi all, I had downloaded the whole setup of xwiki. In beginning its working fine but Whenever I restart the tomcat 5.0 the version of the Xwiki Changed from Version 1.0 to version 9.841. I m not getting why it happening . Please help me out from this problem Regards pramit ********************************************************************************************************************************************* This e-mail communication and any attachments may be privileged and confidential to Hexaware and are intended only for the use of the recipients named above. If you are not the intended recipient, please do not review, disclose, disseminate, distribute or copy this e-mail and attachments. If you have received this email in error, please delete the same alongwith all attachments thereto and notify us immediately at mailadmin(a)hexaware.com <mailto:[email protected]>. *********************************************************************************************************************************************

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[xwiki-devs] About the new SkinExtensions plugin
by Jean-Vincent Drean 01 May '08

01 May '08

Hi XWikiers There are open question about the new skinx plugin, I'd like to discuss about the first one : http://dev.xwiki.org/xwiki/bin/view/Design/SkinExtensions#HUsage "Should $xwiki.jsx.useFile("filename.js") work for files located on the disk? This allows the same pull process to be used with files located in the skin, without requiring SX documents and objects. I'd say yes. Then, what should the URL look like? /xwiki/bin/jsx/skins/albatross/somestyle.css is OK?" We definitely need this to be able to load some libraries condditionaly, for example usersandgroups.js or lightbox.js. I don't see the need for some special URLs, would it be a problem that useFile() adds the result of a xwiki.getSkinFile() to the header ? Thanks, -- Jean-Vincent Drean

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[xwiki-devs] XWiki.TagClass in Xwiki 1.3
by Kamna Jain 01 May '08

01 May '08

Devs, How is the TagClass used? Does a page contain one object of this class for every Tag that is added to the page/document. or Do, all the tags belong to the same "tags" field of one object. I tried adding 2 tags (separated by a | ) and then used rthe following code, it does not seem to work. Please guide: #set($assetDoc = $xwiki.getDocument($asset)) #set($tagObject=$assetDoc.getObject("XWiki.TagClass")) #set($tags = $tagObject.get("tags")) #set($tagList = $tags.split("|")) or #set($tagList = $tags.toString().split("|")) (even getName() does not work) #foreach ($tag in $tagList) #if($tag == "XYZ") ( #if($tag.equals("XYZ")) also does not work but when I had only one tag in the tags field, I just used : #if( $tagObject.get("tags") == "XYZ") and this worked.... Please help - one tag per object or multiple tags per object? Thanks

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Re: [xwiki-devs] [xwiki-notifications] XWiki doesn't start anymore
by Vincent Massol 01 May '08

01 May '08

Hi, On Apr 30, 2008, at 1:05 AM, Fabrizio Lamari (TeleJob - WebMaster) wrote: > Hello > > I was using the XWiki for our company and since yesterday evening it > doesn’t work anymore. > I haven’t changed anything on the settings yesterday. > When I want to go on the XWiki (www.telejob.ch/wiki.html) I get this > error: [snip] > Caused by: java.sql.SQLException: General error: > java.lang.OutOfMemoryError: Java heap space > at org.hsqldb.jdbc.Util.sqlException(Unknown Source) > at org.hsqldb.jdbc.jdbcConnection.<init>(Unknown Source) > at org.hsqldb.jdbcDriver.getConnection(Unknown Source) > at org.hsqldb.jdbcDriver.connect(Unknown Source) > at > org > .apache > .commons > .dbcp > .DriverConnectionFactory > .createConnection(DriverConnectionFactory.java:37) > at > org > .apache > .commons > .dbcp > .PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java: > 290) > at > org > .apache > .commons > .dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java: > 877) > at > org > .apache > .commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java: > 851) [snip] As you can see your JVM has no more memory. I don't know why this happened (it can a lot of reasons) but the way to solve it for now is just to restart the JVM (i.e. the servlet container). Thanks -Vincent

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[xwiki-devs] Reviewing XE 1.4 roadmap vs what we did
by Vincent Massol 01 May '08

01 May '08

Hi, I'd like that we review our objectives for 1.4 vs what we've done: * Bug fixes o Go from 240 in JIRA for Core down to 180 on XE 1.4 release date Right now the bug count is at 227. Even though it's lower than 240 it's still a far cry from the 180 target... * Better performance o Run XE with a profiler and find bottlenecks Not done o Reduce number of database calls Not done o Improved page loading (JV) Not done o Make Stats usable on xwiki.org (ThomasM) Done! * More automated tests o More selenium tests We can consider this done although we always need more. We need to continue adding and even spending some time just adding tests even if we don't have code at all. o Add tests on Tomcat 6.x as part of the CI build Not done o Add tests on Windows and with IE6 and IE7 as part of the CI build Not done Conclusions: ========== * We're not too good. I think this is principally due to me, since I focused on the new rendering component and have delegated XE day to day management/coaching to JV. Thus JV has not been able to work on the performance improvements as planned. We really need to get that going in 1.5 now. * We have 1 more week to fix as many bugs as possible. WDYT? Thanks -Vincent

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