January 2008 - xwiki-users@xwiki.org

[xwiki-users] simple Groovy script
by [Ricardo Rodriguez] Your EPEC Network ICT Team 27 Jan '08

27 Jan '08

Hi all, I included this quite simple Groovy script in a XWiki page: <% println "Hello World" list = ["Rod", "James", "Chris"] list.each { println it } println "${list.size()}" %> And I get... Hello World 3 But nothing about printing list. The same script works fine in groovyConsole being the output: Hello World Rod James Chris 3 Please, what am I doing wrong? Must I expect that a script working in groovyConsole do the same in a XWiki page? Thanks for your help, Ricardo -- Ricardo Rodríguez Your EPEC Network ICT Team

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[xwiki-users] XWiki - A brief overview
by Sachn Mittal 27 Jan '08

27 Jan '08

Hi, I this message is an attempt to give every person understanding about what xwiki is and what it can do for you, whether you are an end user, a business analyst or an independent developer. If you like this article then probably this thread can be sticky or used as a starting point to know xwiki. I have been using xwiki as an independent developer for only couple of months now, so there may be errors and omissions. 1. What is XWiki? This is a second generation wiki or an applications wiki. In traditional wikis like media wiki one uses these to create and share collaborative content. Xwiki goes one step ahead of that where you can create applications on top of xwiki platform. These applications can in turn help you create and share content and this content can be raw content like in other wikis or be structured content of different types where each having defined set of attributes and defined interfaces to interact with the content. Next, what type of applications you can create on xwiki? You can create a simple Create Read Update Delete (CRUD) application to maintain and share some structured data to a rich portal based applications where many such structured objects relate to each other as per the ER diagram and users can use them using rich interfaces defined in xwiki. It all depends on how creative you can get. In the subsequent sections I would explain on how to map structured entities define interfaces in xwiki. 2. Technology stack behind XWiki? The application is written using Java and works on any J2EE compliant application server. For most of the deployments tomcat is the best choice. The core engine is designed on a Struts framework where for every action there are respective Java classes responsible to serve that action. These core classes interact with the database layer using Hibernate, to store and fetch data. The front end is written using template engines like Velocity and Groovy. The application can support number of databases. For a default personal use one can build the application on java based low memory footprint database - Hypersonic. For standard deployments over a lan/wan one can use standard databases likle MySql, Oracle, PostgreSql. Further application is a meta data driven i.e. apart from the core schema/data which serves as meta data for further data to be created by users it has no other schema/data. It can accept any schema or ER which users would like to store their data into. That is what makes xwiki an ideal platform to build applications. The developers and users can only concentrate on specific functionalities of the application and can leave all the legacy work of storing data to the xwiki platform. More on this in the next section. 3. How XWiki is presented to us? The basic deployment of xwiki is to simply unzip the core xwiki war (xwiki-enterprise-web-x.xx.war) in the tomcat container. This would create a blank xwiki deployment. This blank deployment would be no good for most of us unless we just want to create some wiki pages. This deployment of xwiki is the core platform. Next step is to create applications on top of it. The immediate application which we can think of is one that can add/manager users and spaces and their rights. To make our job easier along with the xwiki war the xwiki team has also shipped a xar (xwiki-enterprise-wiki-x.xx.xar) file. A xar file is collection of applications. With standard xwiki xar we get the following applications: 1. Main 2. Blog 3. XWiki (has the user and space management modules) 4.Sandbox 5. photo We may choose to import one or all the applications as per our needs. Thus after importing we would have xwiki functional. So up till this point xwiki has served the functionality of what other traditional wikis do. But then this is just a starting point. I hope up till now following is clear: We add applications to xwiki to add functionality. Xwiki team has provided with some default applications to get us started with basic wiki tasks. In next section I would explain more about application. 4. Understanding applications in XWiki If you happen to look at the source if xar files these are nothing but collection of xml files. These xml files contain set of XWiki classes and its attributes and their relationships. You can also create classes in xwiki which would map to the entities of your applications and relate them as per your business needs. Once you are done you can export the page or space and you would have your application ready (Mostly application are packaged as a space. Say panels application is under a panels space.). Then this application can be imported to any xwiki deployment. More on this can be found under DevGuide and Applications section on xwiki platform on xwiki.org XWiki team have themselves created many applications few gets shipped with standard xar file (as described above), few are part of core platform and can be downloaded and imported from xwiki.org or can also be built directly from the source (if you like me are in habit of building xwiki always from source). One can import and study them to know how to create simple to complex applications. I would touch on applications once again in the end. 5. Understanding User Interface in XWiki The user interfaces are defined under skins. The skin can be found under webapps/xwiki/skins directory. Default and most supported skin is albatross. A skin is a set of velocity templates, javascript and css files. You can do many things with the UI: 1. Say you like to change the presentation of objects of particular class you define in some application. Then this can be done by altering the velocity code in the template of the class. 2. Say you like to change the overall look and feel of the application. Then the place would be to start altering the velocity templates/js files/css files under the albatross skin. Once you have done and tested the needed changes the same skin can be renamed to the bird of your choice. More on skins can be found under the AdminGuide on XWiki Platform on xwiki.org. Before I move forward I would like to explain how UI of xwiki is rendered. Whenever any xwiki action is requested it calls set of velocity pages (.vm files) responsible for generating and rendering the UI content for that action. A velocity page may further include other velocity page, and this way a hierarchy of pages is established. Each vm page can access some of the core objects of xwiki. More on these objects can be again found in the DevGuide. Thus vm page would access these objects, fetch the relevant content and display them as they are to be rendered on the browser. So you can see that this gives one lot of flexibility on the UI side. I can do many things, change-rearrange the hierarchy, remove the pages whose content I don't want, re arrange the content in a page. I can even add the js files of my favorite ajax toolkits and now I have the same content generated by vm templates rendered by my ajax widgets thus giving a whole new look. As mentioned above that these vm files access core xwiki objects. You can also make them access your own objects. This can be done by defining plugins which takes xwiki to even a further level. More on this in next section. Last point I would like to mention is that in order to modify and alter the skins vm files we have to know that what are the vm files and in what order they are called on each user action. I don't have a document answer to this, but since I build xwiki from source and am able to add breakpoints to find the same information. Perhaps this could be done by some log settings. 6. Extending XWiki and wrap up I hope by now following is clear: 1. Xwiki presents us with core platform. 2. It can be extended by adding applications. 3. The look and feel can be altered to a great extent by modifying vm files. 4. It can be further extended by adding plugins which introduces objects in xwiki engine. 5. To help us xwiki has created and supports some applications and plugins as part of their source. If you happen to checkout the source of xwiki you would notice that it has been arranged pretty intuitively. It has the following top level structure (important ones): 1. xwiki-platform-applications - the set of applications xwiki built 2. xwiki-platform-core - the core platform 3. xwiki-platform-plugins - the set of plugins xwiki built 4. xwiki-platform-web - the standard UI which contains skins and velocity templates 5. xwiki-product-curriki - their curriki product, which is built on core platform. - this would further have its own set of plugins, applications and skins. 6. xwiki-product-enterprise - the core xwiki product something to start with for standard xwiki deployments 7. xwiki-product-enterprise-manager - the enterprise manager product 8. xwiki-product-watch - their watch product, which is built on core platform. - this would further have its own applications and skins. Idea of presenting this structure here is that if you want to build rich applications on xwiki and package them as product on top of xwiki platform, these would give you some insight. While building the product you can choose from the set of applications and plugins already built by xwiki team which are part of core or part of specific product. You can also start with skin you like and modify as you want. note: this section is specially for developers who want to create products and would like to choose xwiki as the platform. Knowledge of technology stack used in xwiki is advisable and also try to build xwiki from source, to give you greater flexibility and control. Lastly I would touch on plugin section of which my knowledge is only theoretical has I am yet to create a plugin. You can find information on plugin architecture on xwiki DevGuide section CreatingPlugins. You would need plugin to do some custom task that can be called via action from a velocity page. Say I have to create a workflow for my class. Upon state change some custom process needs to be invoked (like send of email), I can do that in my plugin and when user changes the state then I invoke the plugin from my vm file. Thanks Sachin -- View this message in context: http://www.nabble.com/XWiki---A-brief-overview-tp15116968p15116968.html Sent from the XWiki- Users mailing list archive at Nabble.com.

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[xwiki-users] XWiki Vs. MediaWiki
by Kamna Jain 26 Jan '08

26 Jan '08

Hello again, Thanks a lot for the reply to my request Vincent. I am further encouraged to start using XWiki because of such good participation from all. Since, I have just started looking at it, I am also concerned about the issues llike how is XWiki different from MediaWiki. Why should one choose to use XWiki if there exists a wiki that has been around for a while- like the mediawiki. No offense meant. I know that this is a second generation wiki and is possibly the best among all of its kind, but, I am just trying to justify myself for choosing XWiki over others :) Thanks

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[xwiki-users] about xmlrpc and portlets
by Emiliano Pecis 25 Jan '08

25 Jan '08

Hi All, I was able to run latest xwiki version on all oracle stack (db and oc4j as application server). Good! :) Just two questions, maybe for all platform: 1) http://mywiki/xwiki/xmlrpc returns 405 http error. Any hints? 2) I can see there is a portlet.xml file in order to renderer xwiki as a portlet. But, web.xml file is not provided with the right info for this feature. Any hints? Thanks a lot, emiliano

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[xwiki-users] installation problem
by maze 25 Jan '08

25 Jan '08

Hi, Here is my java version (sun jdk): 1.6.0_02 Here is the way I've installed xwiki: #java -jar wiki-enterprise-installer-generic-1.2.jar Everything work fine. Here is what I have when I start xwiki enterprise: ********************************** Starting Jetty on port 8080 ... Logs are in the /opt/XWiki Enterprise/xwiki.log file 14:51:11.272 INFO [main] org.mortbay.log.LogImpl.add(LogImpl.java:109) >14> added org.mortbay.log.OutputStreamLogSink@36484621 14:51:11.189 INFO [main] org.mortbay.util.FileResource.<clinit>(FileResource.java:60) >09> Checking Resource aliases 14:51:11.341 WARN!! [main] org.mortbay.xml.XmlParser.<init>(XmlParser.java:81) >10> Schema validation may not be supported 14:51:11.623 INFO [main] org.mortbay.http.HttpServer.doStart(HttpServer.java:729) >07> Version Jetty/5.1.5 14:51:11.637 INFO [main] org.mortbay.util.Container.start(Container.java:74) >11> Started org.mortbay.jetty.servlet.ServletHandler@59e00 14:51:11.638 INFO [main] org.mortbay.util.Container.start(Container.java:74) >08> Started ServletHttpContext[/,/] 14:51:11.641 INFO [main] org.mortbay.http.SocketListener.start(SocketListener.java:204) >08> Started SocketListener on 127.0.0.1:8081 14:51:11.643 INFO [main] org.mortbay.util.Container.start(Container.java:74) >06> Started org.mortbay.jetty.Server@36657f01 14:51:11.711 INFO [main] org.mortbay.http.HttpServer.setStatsOn(HttpServer.java:1133) >12> Statistics on = false for org.mortbay.jetty.Server@36657d81 14:51:11.713 INFO [main] org.mortbay.http.HttpServer.doStart(HttpServer.java:729) >07> Version Jetty/5.1.5 14:51:11.740 WARN!! [main] org.mortbay.xml.XmlParser.<init>(XmlParser.java:81) >14> Schema validation may not be supported 14:51:12.534 INFO [main] org.mortbay.util.Container.start(Container.java:74) >12> Started org.mortbay.jetty.servlet.WebApplicationHandler@36525e81 14:51:14.004 INFO [main] org.mortbay.jetty.servlet.ServletHandler$Context.log(ServletHandler.java:1134) >14> Loading plexus context properties from: '/WEB-INF/plexus.properties' 14:51:14.008 INFO [main] org.mortbay.jetty.servlet.ServletHandler$Context.log(ServletHandler.java:1134) >13> Initializing Plexus. 14:51:14.011 INFO [main] org.mortbay.jetty.servlet.ServletHandler$Context.log(ServletHandler.java:1134) >14> resource = file:/opt/XWiki%20Enterprise/webapps/xwiki/WEB-INF/plexus.xml 14:51:14.410 INFO [main] org.mortbay.jetty.servlet.ServletHandler$Context.log(ServletHandler.java:1134) >13> Plexus initialized. 14:51:15.497 INFO [main] org.mortbay.util.Container.start(Container.java:74) >08> Started WebApplicationContext[/xwiki,xwiki] 14:51:15.501 INFO [main] org.mortbay.http.SocketListener.start(SocketListener.java:204) >08> Started SocketListener on 0.0.0.0:8080 14:51:15.502 INFO [main] org.mortbay.util.Container.start(Container.java:74) >06> Started org.mortbay.jetty.Server@36657d81 ***************************************** Nothing happen when I try to go to http://localhost:8080/xwiki/bin/view/Main/WebHome: HERE is an extract of the begining xwiki.log file: ***************************************** # more /opt/XWiki\ Enterprise/xwiki.log 14:54:30,482 [http://localhost:8080/xwiki/bin/view/Main/WebHome] [P1-19] ERROR proxy.BasicLazyInitializer - CGLIB Enhancement failed: com.xpn.xwiki.objects.classes.StringClass java.lang.NoClassDefFoundError: net.sf.cglib.core.DebuggingClassWriter$1 at java.lang.Class.initializeClass(libgcj.so.8rh) at net.sf.cglib.core.DebuggingClassWriter.toByteArray(DebuggingClassWriter.java:73) at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:26) at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) at java.lang.Class.initializeClass(libgcj.so.8rh) at org.hibernate.proxy.CGLIBLazyInitializer.getProxyFactory(CGLIBLazyInitializer.java:116) at org.hibernate.proxy.CGLIBProxyFactory.postInstantiate(CGLIBProxyFactory.java:41) at org.hibernate.tuple.PojoEntityTuplizer.buildProxyFactory(PojoEntityTuplizer.java:161) at org.hibernate.tuple.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:131) at org.hibernate.tuple.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55) at org.hibernate.tuple.TuplizerLookup.create(TuplizerLookup.java:64) at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:257) at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:412) at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersist er.java:90) at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:58) at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:216) ******************************************* Any idea? thank you FD Créez votre adresse électronique prénom.nom(a)laposte.net 1 Go d'espace de stockage, anti-spam et anti-virus intégrés.

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[xwiki-users] multilingual included file?
by Paul Libbrecht 25 Jan '08

25 Jan '08

Hello, a good practice is to import the markup-intensive pages from "shared pages" which, typically, make their internationalization, using property-bundles. Now, however, these imported pages should be multilingual. Thus far, they seem not to be so because the usage of msg.get('xx') seems to pull from the english phrases. - any way to "set the language" before including ? - any way to state that such a page is "language neutral" ? (as it should be) thanks paul

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[xwiki-users] Exception while patching
by [Ricardo Rodriguez] Your EPEC Network ICT Team 25 Jan '08

25 Jan '08

Hi all, I've recently updated a couple of XWiki installations to 1.2.6932. Either with old documents or with new ones, when I try to see a given revision of a page, any of them, I get the following exception: Error number 3103 in 3: Exception while reading document version {1} Wrapped Exception: Error number 13027 in 13: Exception while patching Wrapped Exception: line::java.lang.NumberFormatException com.xpn.xwiki.XWikiException: Error number 3103 in 3: Exception while reading document version {1} Wrapped Exception: Error number 13027 in 13: Exception while patching Wrapped Exception: line::java.lang.NumberFormatException at com.xpn.xwiki.doc.XWikiDocumentArchive.loadDocument(XWikiDocumentArchive.java:319) at com.xpn.xwiki.store.XWikiHibernateVersioningStore.loadXWikiDoc(XWikiHibernateVersioningStore.java:162) at com.xpn.xwiki.XWiki.getDocument(XWiki.java:1060) at com.xpn.xwiki.web.XWikiAction.handleRevision(XWikiAction.java:257) at com.xpn.xwiki.web.ViewrevAction.render(ViewrevAction.java:29) at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:148) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445) at java.lang.Thread.run(Unknown Source) This happens both in wikis where I've imported the 1.2 .xar and where I don't. Comparisons between releases usually show the whole content highlighted green. Or no changes at all. New documents work fine for "a while". I say "a while" because I am not able to identify the point where they start behaving as the old ones. Please, could you help me with this issue! Thank you so much. Ricardo -- Ricardo Rodríguez Your EPEC Network ICT Team

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[xwiki-users] Problems with changing the layout
by Thorbjørn Konstantinovitz 25 Jan '08

25 Jan '08

Hi, I have installed xwiki r1.2-rc-3.6698. I have installed the enterprise manager application. I can successfully create and edit spaces and documents. But when I try to change the xwiki layout to a 3 column layout, it is changed in the ui and I get an alert saying that the changes were saved. But when i click on a page link it reverts to the "normal" 2-column layout. The same happens when I eg. change the copyright notice and title etc. I have checked the log files and the only thing I found was this: 16:01:45,959 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Current storage version = [0] 16:01:45,969 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - List of migrations that will be executed: 16:01:45,969 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - R4340XWIKI883 - See http://jira.xwiki.org/jira/browse/XWIKI-883 16:01:45,970 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - R4359XWIKI1459 - See http://jira.xwiki.org/jira/browse/XWIKI-1459 16:01:45,970 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - R6079XWIKI1878 - See http://jira.xwiki.org/jira/browse/XWIKI-1878 16:01:45,970 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - R6405XWIKI1933 - See http://jira.xwiki.org/jira/browse/XWIKI-1933 16:01:45,970 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - R6430XWIKI1954 - See http://jira.xwiki.org/jira/browse/XWIKI-1954 16:01:45,973 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Running migration [R4340XWIKI883] with version [4340] 16:01:46,279 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - New storage version is now [4341] 16:01:46,279 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Running migration [R4359XWIKI1459] with version [4359] 16:01:46,304 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - New storage version is now [4360] 16:01:46,305 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Running migration [R6079XWIKI1878] with version [6079] 16:01:46,309 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - New storage version is now [6080] 16:01:46,309 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Running migration [R6405XWIKI1933] with version [6405] 16:01:46,313 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - New storage version is now [6406] 16:01:46,314 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - Running migration [R6430XWIKI1954] with version [6430] 16:01:46,318 [http://housecube02/xwiki/bin/view/Main/WebHome] [http80-Processor25] INFO .AbstractXWikiMigrationManager - New storage version is now [6431] 16:13:14,887 [http://housecube02/xwiki/bin/import/XWiki/Import?editor=import&space=XWiki] [http80-Processor24] WARN interwiki.InterWiki - Unable to read conf/intermap.txt Can it be the wrong .xar version. If so, how do I make sure that i get the right version? Cheers /Thorbjørn Konstantinovitz -- T: +45 2048 2151 W: http://kodefabrikken.dk If you failing to plan, then you´re planning to fail.

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[xwiki-users] Help needed to start with XWiki ...
by Kamna Jain 24 Jan '08

24 Jan '08

Hello All, I am a newbie in XWiki. I installed the standalone version of XWiki and also downloaded the source code for the platform (core) and for the Enterprise (Product). Can anyone guide me as to what should I do next if I wanted to play a little with the Enterprise code and add some features to it. I am using Eclipse IDE. Thanks

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[xwiki-users] java version?
by maze 24 Jan '08

24 Jan '08

I see that java1.5 is needed to install xwiki. But does it work with 1.6? thank you Créez votre adresse électronique prénom.nom(a)laposte.net 1 Go d'espace de stockage, anti-spam et anti-virus intégrés.

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