Re: [xwiki-devs] Fwd: Get started with XWiki

On 14 May 2018, at 11:32, Eduard Moraru &lt;enygma2002(a)gmail.com There seem to be some resources on the topic: https://github.com/libgdx/libgdx/wiki/Bundling-a-JRE https://stackoverflow.com/questions/7071133/how-to-bundle-a-jre-with-launch… https://codeiseasy.wordpress.com/2012/07/31/including-a-jre-in-a-tycho-buil… ...so it's not such an uncommon practice. On the legal side, OpenJDK should be the obvious choice: https://opensource.stackexchange.com/questions/4824/is-it-legal-to-bundle-o… IMO, it would make sense to provide the full and ready to test package, rather than an only 90% ready to test one. Thanks, Eduard On Mon, May 14, 2018 at 12:04 PM, Thomas Mortagne &lt;thomas.mortagne(a)xwiki.com > On Mon, May 14, 2018 at 10:49 AM, Eduard Moraru &lt;enygma2002(a)gmail.com&gt; >> AFAIR, Eclipse also does this (i.e. bundle their own JRE), we could look >> into how they do it. > > Eclipse JDT comes with its own Java compiler but you are supposed to > install Java to run Eclipse itself. > >> >> On a quick check, OpenJDK's JRE is only 38.4 MB ( >> http://jdk.java.net/java-se-ri/8) ... I find that acceptable. > > Not sure the license allow us to embbed what's on that page. > > 38.4MB is probably only for one system, I think you need 3 of those > (Linux, Windows, Mac) > >> >> FTR, the JDK is 164 MB. >> >> Thanks, >> Eduard >> >> On Mon, May 14, 2018 at 11:40 AM, Thomas Mortagne < > thomas.mortagne(a)xwiki.com >>>> >>> One issue with embedded Java (OpenJDK I guess) is that it would make >>> the zip quite huge. >>> >>> On Mon, May 14, 2018 at 10:30 AM, Eduard Moraru &lt;enygma2002(a)gmail.com&gt; >>>>>> Hi, >>>> >>>> On the palliative side (i.e. not actually fixing, but at least making >>> life >>>> a bit easier), we might consider a naming scheme for the downloadable >>> that >>>> includes that supported java version, e.g. xwiki-10.3-java8.zip > (though >>>> this might also lead users to thinking that the java 8 runtime is >>>> included... which might not be that bad of an idea, if we think about >>> it... >>>> at least for the zip version that is for demo purposes, which already >>>> contains the web server, the database, but still expects the user to >>>> understand and install the correct Java runtime, which makes no > sense.) >>>> >>>> So, yeah... TL;DR: add the java8 runtime to the .zip package and make >>> life >>>> easier for everyone. Optionally (though not sure if needed anymore, > if we >>>> bundle it), include it in the .zip file name. >>>> >>>> Of course, the production install, if done manually (i.e. not through >>>> .deb/.rpm packages), expects that the user reads the documentation. >>>> >>>> Thanks, >>>> Eduard >>>> >>>> On Mon, May 14, 2018 at 10:19 AM, Vincent Massol &lt;vincent(a)massol.net&gt; >>>>>> >>>>> Hi devs, here’s a feedback we received, FYI. >>>>> >>>>> Ideas? >>>>> >>>>> Thanks >>>>> -Vincent >>>>> >>>>>> Begin forwarded message: >>>>>> >>>>>> From: Vincent Massol >>>>>> Subject: Re: Get started with XWiki >>>>>> Date: 14 May 2018 at 09:10:06 CEST >>>>>> To: XXX >>>>>> Cc: XXX >>>>>> >>>>>> Hi Christian, >>>>>> >>>>>>> On 12 May 2018, at 14:25, Christian XXX wrote: >>>>>>> >>>>>>> It's not working. >>>>>>> >>>>>>> And as usual ith java, the log does not help. Maybe if I were an >>>>> expert? But an app is supposed to be installed by just 'smart' users, >>> not >>>>> experts. >>>>>> >>>>>> If you choose the easy installation methods we propose then it’s > easy >>>>> and you have nothing to do. >>>>>> >>>>>> Which distribution did you choose and use? >>>>>> >>>>>>> And there is no help from the website. >>>>>>> >>>>>>> Oracle Linux 7. >>>>>>> Linux localhost.localdomain 4.1.12-124.14.5.el7uek.x86_64 #2 SMP > Fri >>>>> May 4 15:26:53 PDT 2018 x86_64 x86_64 x86_64 GNU/Linux >>>>>>> Java 10 >>>>>>> Xwiki 10.3 >>>>>>> tomcat. >>>>>>> >>>>>>> If it is not compatible whith this java. It should not install. >>>>>> >>>>>> It’s just not been tested with Java 10 yet. It’s not even fully >>> working >>>>> with Java 9. >>>>>> >>>>>> Note that it’s hard to check for the java version for all the >>>>> distributions since XWiki is a webapp and the XWiki WAR can just be >>> dropped >>>>> in a servlet container and thus we don’t have a startup script and a >>> place >>>>> where we can put a check. All we could do is have a Servlet Listener >>> that >>>>> would emit a big stack trace (like the one you got) and that would > say >>> at >>>>> the innermost level that XWiki requires Java <= 8. But even that >>> wouldn’t >>>>> be good since it would prevent testing in Java 9+. We want feedback > from >>>>> users about what works/what doesn’t work so improve support for Java > 9 >>> and >>>>> 10. >>>>>> >>>>>>> If it is compatible with only one version of java, which one? >>>>>> >>>>>> You need to read the installation page ;) >>>>>> >>>>>> See http://www.xwiki.org/xwiki/bin/view/Documentation/ >>>>> AdminGuide/Installation/ and especially: >>>>>> http://www.xwiki.org/xwiki/bin/view/Documentation/ >>>>> AdminGuide/Installation/#HHardwareandSoftwarerequirements >>>>>> >>>>>>> Here is the error: >>>>>>> >>>>>>> >>>>>>> Error number 4001 in 4: Error while evaluating velocity template >>>>> colorThemeInit.vm >>>>>>> Error number 4001 in 4: Error while evaluating velocity template >>>>> colorThemeInit.vm >>>>>>> com.xpn.xwiki.XWikiException: Error number 4001 in 4: Error while >>>>> evaluating velocity template colorThemeInit.vm >>>>>> >>>>>> [snip] >>>>>> >>>>>>> Caused by: java.lang.IllegalStateException: No standard field > found >>>>> for reverse order comparator! >>>>>>> at org.jboss.marshalling.river.Protocol.<clinit>(Protocol. >>>>> java:276) >>>>>>> ... 249 mor >>>>>> >>>>>> [snip >>>>>> >>>>>>> Caused by: java.lang.IllegalStateException: No standard field > found >>>>> for reverse order comparator! >>>>>>> at org.jboss.marshalling.river.Protocol.<clinit>(Protocol. >>>>> java:276) >>>>>>> ... 249 mor >>>>>> >>>>>> What this says is that JBoss Infinispan (which we use) is not >>> compatible >>>>> with Java 10. Apparently this is fixed in recent version of JBoss >>>>> Marshalling: https://issues.jboss.org/browse/JBMAR-216. We probably >>> just >>>>> need to wait for JBoss Infinispan to release a new version that uses >>> JBoss >>>>> Marshalling 2.1.0.Final. >>>>>> >>>>>> What would be awesome would be for you to report the problem of > using >>>>> XWiki with Java 10 on https://jira.xwiki.org so that we can have an >>> issue >>>>> for it and work to make it work. >>>>>> >>>>>> Note that I’m replying to this message to help you out but it’s not >>> the >>>>> right place to post a question and get help normally. For that we > have a >>>>> user forum at https://forum.xwiki.org/. >>>>>> >>>>>> I’m sorry you had some issues. OTOH you’re looking for trouble by >>> trying >>>>> with Java 10. There are very few (if any!) java app that currently > work >>>>> with Java 9 and 10. You’d be much better off using Java 8. On the >>> positive >>>>> side, if you raise the issue on https://jira.xwiki.org, then you > will >>>>> transform your negative experience into a positive one, by > contributing >>> to >>>>> the development of XWiki and helping out future users. >>>>>> >>>>>> Thanks >>>>>> -Vincent Massol >>>>> >>>>> [snip] >>>>> >>>>> >>> >>> >>> >>> -- >>> Thomas Mortagne >>> > > > > -- > Thomas Mortagne >