29 Jun
2016
29 Jun
'16
2:02 p.m.
Yes, i read that thread till the end but didn't tried MySql. I tried H2 to be sure if
it's database related issue but same stack trace. I am planning to use that wiki in
our server environment. We use weblogic as application server and Oracle11g as database
server. Actually, after i test standalone version in my desktop, i tried to deploy xwiki
to weblogic and had several errors. I passed all of them and stucked at this one. After
that i gave a try to Apache Tomcat and same issue. I am trying to make it work for a week
but i am desperate now. I think, i will use standalone version at the production
environment :)
-----Original Message-----
From: users [mailto:users-bounces@xwiki.org] On Behalf Of Clemens Klein-Robbenhaar
Sent: Wednesday, June 29, 2016 2:54 PM
To: users(a)xwiki.org
Subject: Re: [xwiki-users] NullPointerException at HqlSqlWalker.lookupProperty(
HqlSqlWalker.java:560)
Uh, oh, this looks like this problem reported last year:
http://markmail.org/thread/4iigsjpxdaw2qzzq
the issue went away there when using mySQL - for unknown reasons, so that time we did not
really find a solution.
hope we can do better this time.
----- Ursprüngliche Nachricht -----
Von: Kemalettin Ocak
Am: Wednesday, 29.06.2016, 12:20
An: Xwiki Users
Betreff: Re: [xwiki-users] NullPointerException at HqlSqlWalker.lookupProperty(
HqlSqlWalker.java:560)
Here is the root cause:
HTTP Status 500 - com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to
extract Entity Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/]
type Exception report
message com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity
Resource Reference from URL [http://localhost:8080/xwiki/bin/view/Main/]
description The server encountered an internal error that prevented it from fulfilling
this request.
exception
javax.servlet.ServletException: com.xpn.xwiki.XWikiException: Error number 11007 in 0:
Failed to extract Entity Resource Reference from URL
[http://localhost:8080/xwiki/bin/view/Main/]
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:520)
[...]
root cause
com.xpn.xwiki.XWikiException: Error number 11007 in 0: Failed to extract Entity Resource
Reference from URL [http://localhost:8080/xwiki/bin/view/Main/]
com.xpn.xwiki.XWiki.initializeResourceFromURL(XWiki.java:821)
com.xpn.xwiki.XWiki.getXWiki(XWiki.java:764)
[...]
root cause
java.lang.RuntimeException: Failed to locate wiki descriptor for alias [localhost]
org.xwiki.url.internal.standard.AbstractWikiReferenceExtractor.getWikiDescriptorByAlias(AbstractWikiReferenceExtractor.java:80)
org.xwiki.url.internal.standard.DomainWikiReferenceExtractor.resolveDomainBasedWikiReference(DomainWikiReferenceExtractor.java:61)
[...]
here is where the XWQL query is send as HQL query instead of being translated:
root cause
org.xwiki.query.QueryException: Exception while executing query. Query statement = [
select doc.fullName from XWikiDocument as doc , BaseObject as _o1 where ( doc.object (
XWiki.XWikiServerClass ) . server = :wikiAlias and doc.name like 'XWikiServer%' )
and doc.fullName=_o1.name and _o1.className='XWiki.XWikiServerClass' ]
com.xpn.xwiki.store.hibernate.query.HqlQueryExecutor.execute(HqlQueryExecutor.java:175)
org.xwiki.query.internal.DefaultQueryExecutorManager.execute(DefaultQueryExecutorManager.java:72)
org.xwiki.query.internal.DefaultQuery.execute(DefaultQuery.java:287)
org.xwiki.query.xwql.internal.XWQLQueryExecutor.execute(XWQLQueryExecutor.java:118)
[..]
root cause
java.lang.NullPointerException
org.hibernate.hql.ast.HqlSqlWalker.lookupProperty(HqlSqlWalker.java:560)
org.hibernate.hql.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4774)
org.hibernate.hql.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1326)
[...]
and here the dot in " doc.fullName" or "doc.object" triggers the NPE
in the hibernate HQL Query parser :-/
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