Re: [xwiki-devs] [GSOC][WEBDAV] Problem With Core Failing (XWikiCacheStore)

19 Jun 2008

      Hi Thomas,

On Thu, Jun 19, 2008 at 1:09 PM, Thomas Mortagne <[email protected]>
wrote:
...
On Thu, Jun 19, 2008 at 4:32 AM, Asiri Rathnayake
<[email protected]> wrote:
...
Hi Thomas,
Sorry for the late reply, i just woke up :)
This is ludovic's original code,
<code>
context = Utils.prepareContext("", request, response, engine);
context.setMode(XWikiContext.MODE_GWT);
context.setDatabase("xwiki");
XWiki xwiki = XWiki.getXWiki(context);
</code>
So yes, Utils.prepareContext() is used but XWiki.getXWiki() fails.
I just committed a throw in Utils.getComponent when component manager
has not been initialized, that way we will be sure it's the problem or
not.
Ok, now i'm getting the correct exception,

<dump>
java.lang.RuntimeException: Component manager has not been initialized
before lookup for [org.xwiki.cache.CacheFactory] for hint [default]
        at com.xpn.xwiki.web.Utils.getComponent(Utils.java:527)
        at com.xpn.xwiki.XWiki.getCacheFactory(XWiki.java:5127)
        at
com.xpn.xwiki.store.XWikiCacheStore.initCache(XWikiCacheStore.java:86)
        at
com.xpn.xwiki.store.XWikiCacheStore.initCache(XWikiCacheStore.java:80)
        at
com.xpn.xwiki.store.XWikiCacheStore.<init>(XWikiCacheStore.java:62)
        at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:675)
        at com.xpn.xwiki.XWiki.<init>(XWiki.java:652)
        at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:312)
        at com.xpn.xwiki.XWiki.getXWiki(XWiki.java:383)
        at
com.xpn.xwiki.plugin.webdav.XWikiDavResourceImpl.getXWikiContext(XWikiDavResourceImpl.java:341)
        at
com.xpn.xwiki.plugin.webdav.XWikiDavResourceImpl.<init>(XWikiDavResourceImpl.java:193)
        at
com.xpn.xwiki.plugin.webdav.XWikiResourceFactoryImpl.createResource(XWikiResourceFactoryImpl.java:105)
        at
com.xpn.xwiki.plugin.webdav.XWikiResourceFactoryImpl.createResource(XWikiResourceFactoryImpl.java:69)
        at
com.xpn.xwiki.plugin.webdav.XWikiDavServlet.service(XWikiDavServlet.java:353)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
        at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
        at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:219)
        at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
        at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:738)
        at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
        at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
        at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:113)
        at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
        at org.mortbay.jetty.Server.handle(Server.java:325)
        at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)
        at
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:859)
        at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
        at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
        at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:391)
        at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
        at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
</dump>

Can you help me with the correct way of obtaining a handle to the main Wiki
?

I mean what am i doing wrong in,

<code>
 context = Utils.prepareContext("", request, response, engine);
 context.setMode(XWikiContext.MODE_GWT);
 context.setDatabase("xwiki");
 XWiki xwiki = XWiki.getXWiki(context);
</code>

Anyway, i will look into this.

Thanks a lot.

- Asiri
...
...
Thanks.
- Asiri
On Thu, Jun 19, 2008 at 2:16 AM, Thomas Mortagne <
[email protected]>
...
wrote:
...
Asiri, is webdav servlet use Utils.prepareContext to create/prepare
the context ? (the Utils's ComponentManager is initialized in it)
On Wed, Jun 18, 2008 at 10:43 PM, Thomas Mortagne
<[email protected]> wrote:
...
ok, I think the problem is that when the first connection is webdav
ComponentManager is not initialized in Utils
On Wed, Jun 18, 2008 at 10:28 PM, Thomas Mortagne
<[email protected]> wrote:
...
Also I just fixed a build bug : cache was not built when building
from
/trunks
On Wed, Jun 18, 2008 at 10:25 PM, Thomas Mortagne
<[email protected]> wrote:
...
Hi,
This error append when you try to use cache component before
ComponentManager initialization, it's not really related to cache
itself.
How do you reproduce this ? Is it in a unit test ? I don't have any
problem in virtual or non virtual mode when using xwiki in
standalone
or from Eclipse....
On Wed, Jun 18, 2008 at 9:11 PM, Asiri Rathnayake
<[email protected]> wrote:
> Hi All,
>
> I cannot test xwiki-webdav anymore because XWikiCacheStore throws a
null
> pointer exception that i cannot figure out. I think this is
introduced
by a
> recent commit, please help me with this. Following is the
exception,
>
> <dump>
> java.lang.NullPointerException
>        at
>
com.xpn.xwiki.store.XWikiCacheStore.initCache(XWikiCacheStore.java:95)
>        at
>
com.xpn.xwiki.store.XWikiCacheStore.initCache(XWikiCacheStore.java:80)
>        at
> com.xpn.xwiki.store.XWikiCacheStore.<init>(XWikiCacheStore.java:62)
>        at com.xpn.xwiki.XWiki.initXWiki(XWiki.java:675)
>        at com.xpn.xwiki.XWiki.<init>(XWiki.java:652)
>        at com.xpn.xwiki.XWiki.getMainXWiki(XWiki.java:312)
>        at com.xpn.xwiki.XWiki.getXWiki(XWiki.java:383)
>        at
>
com.xpn.xwiki.plugin.webdav.XWikiDavResourceImpl.getXWikiContext(XWikiDavResourceImpl.java:350)
...
...
...
...
>        at
>
com.xpn.xwiki.plugin.webdav.XWikiDavResourceImpl.<init>(XWikiDavResourceImpl.java:205)
...
...
...
...
>        at
>
com.xpn.xwiki.plugin.webdav.XWikiResourceFactoryImpl.createResource(XWikiResourceFactoryImpl.java:105)
...
...
...
...
>        at
>
com.xpn.xwiki.plugin.webdav.XWikiResourceFactoryImpl.createResource(XWikiResourceFactoryImpl.java:69)
...
...
...
...
>        at
>
com.xpn.xwiki.plugin.webdav.XWikiDavServlet.service(XWikiDavServlet.java:351)
...
...
...
...
>        at
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>        at
>
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>        at
>
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:363)
>        at
>
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:219)
...
...
...
...
>        at
>
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>        at
>
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:738)
>        at
>
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>        at
>
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
...
...
...
...
>        at
>
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:113)
...
...
...
...
>        at
>
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>        at org.mortbay.jetty.Server.handle(Server.java:325)
>        at
>
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:535)
>        at
>
org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:859)
...
...
...
...
>        at
org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
>        at
org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>        at
org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:391)
>        at
>
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
...
...
...
...
>        at
>
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
...
...
...
...
> </dump>
>
> In XWikiCacheStore.initCache() method,
>
> CacheFactory cacheFactory = context.getWiki().getCacheFactory();
>
> here, cacheFactory has become null.
>
> I've only found this problem and currently looking into it, if
anyone
can
> help me get over this quickly it would be a big help.
>
> Thanks.
>
> - Asiri
> _______________________________________________
> devs mailing list
> [email protected]
> http://lists.xwiki.org/mailman/listinfo/devs
>
--
Thomas Mortagne
--
Thomas Mortagne
--
Thomas Mortagne
--
Thomas Mortagne
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Thomas Mortagne
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