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[CDO] Query [message #547498] Sat, 17 July 2010 18:29 Go to next message
Miranda is currently offline MirandaFriend
Messages: 25
Registered: June 2010
Junior Member
Hi!
I need to obtain information from CDO repositories programmatically, so i ve tried examples with CDOQuery, but I am getting exception:
org.eclipse.net4j.signal.RemoteException: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]

What can be the reason?

Then I ve tried to work with EMF Model Query2. It works, but results are represented as ResultSet, how can I convert them to List of EObject?

Thanks in advance.Smile
Re: [CDO] Query [message #547517 is a reply to message #547498] Sun, 18 July 2010 05:32 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6682
Registered: July 2009
Senior Member
This is a multi-part message in MIME format.
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Hi Miranda,

Same counter questions as with your last question ten days ago:

1) Where/what is the stack trace?
2) What version of CDO are you using?

Cheers
/Eike

Contact: http://www.esc-net.de Blogger <http://thegordian.blogspot.com>Twitter <http://twitter.com/eikestepper>Linkedin <http://de.linkedin.com/in/eikestepper>Xing <http://www.xing.com/profile/Eike_Stepper>
Article: What exactly is inside that p2 repository? < http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html>

I'm going to Eclipse Summit Europe 2010 <http://www.eclipsesummit.org/>



Am 17.07.2010 20:29, schrieb Miranda:
> Hi!
> I need to obtain information from CDO repositories programmatically, so i ve tried examples with CDOQuery, but I am getting exception:
> org.eclipse.net4j.signal.RemoteException: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
>
> What can be the reason?
>
> Then I ve tried to work with EMF Model Query2. It works, but results are represented as ResultSet, how can I convert them to List of EObject?
>
> Thanks in advance.:)
>

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Hi Miranda,<br>
<br>
Same counter questions as with your last question ten days ago:<br>
<br>
1) Where/what is the stack trace?<br>
2) What version of CDO are you using?<br>
<br>
<!--WISESTAMP_SIG_56631_START--><span style="color: black;">
<div dir="ltr">
<div>Cheers<br>
/Eike<br>
<br>
</div>
<div style="padding: 5px 0pt; font-family: arial,sans-serif;
font-size: 13.3px;"><span style="color: gray;">Contact: <a
href="http://www.esc-net.de">http://www.esc-net.de</a></span>
<a href="http://thegordian.blogspot.com" style="padding: 0pt
2px; color: blue; font-size: 10pt;" _service=""><img
src="cid:part1.08010301.05030707@esc-net.de" alt="Blogger"
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style="vertical-align: middle; padding-bottom: 5px;"
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<div style="color: gray; font-size: 13.3px; padding-bottom:
5px;">Article: <span style="color: blue; text-decoration:
underline;"><a
href=" http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html"
undefined="">What exactly is inside that p2 repository?</a></span></div>
<div><br>
<a href="http://www.eclipsesummit.org/"><img
src="cid:part5.02030501.07070902@esc-net.de" alt="I'm
going to Eclipse Summit Europe 2010" border="0"
height="100" width="130"></a>
<br>
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</span><!--WISESTAMP_SIG_56631_END--><br>
<br>
Am 17.07.2010 20:29, schrieb Miranda:
<blockquote cite="mid:i1ssqi$85k$1@build.eclipse.org" type="cite">Hi!
<br>
I need to obtain information from CDO repositories
programmatically, so i ve tried examples with CDOQuery, but I am
getting exception:
<br>
org.eclipse.net4j.signal.RemoteException:
org.eclipse.net4j.util.container.FactoryNotFoundException: Factory
not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
<br>
<br>
What can be the reason?
<br>
<br>
Then I ve tried to work with EMF Model Query2. It works, but
results are represented as ResultSet, how can I convert them to
List of EObject?
<br>
<br>
Thanks in advance.:)
<br>
<br>
</blockquote>
</body>
</html>

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Re: [CDO] Query [message #547542 is a reply to message #547517] Sun, 18 July 2010 16:27 Go to previous messageGo to next message
Miranda is currently offline MirandaFriend
Messages: 25
Registered: June 2010
Junior Member
Hi! Thanks for reply!!!
I am using version CDO 3.0.
This is exception:

Exception in thread "main" org.eclipse.net4j.signal.RemoteException: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
at org.eclipse.net4j.signal.RequestWithConfirmation.setRemoteEx ception(RequestWithConfirmation.java:128)
at org.eclipse.net4j.signal.SignalProtocol.handleRemoteExceptio n(SignalProtocol.java:520)
at org.eclipse.net4j.signal.RemoteExceptionIndication.indicatin g(RemoteExceptionIndication.java:53)
at org.eclipse.net4j.signal.Indication.doExtendedInput(Indicati on.java:55)
at org.eclipse.net4j.signal.Signal.doInput(Signal.java:315)
at org.eclipse.net4j.signal.Indication.execute(Indication.java: 49)
at org.eclipse.net4j.signal.Signal.runSync(Signal.java:240)
at org.eclipse.net4j.signal.Signal.run(Signal.java:146)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unkno wn Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
at org.eclipse.net4j.util.container.ManagedContainer.getFactory (ManagedContainer.java:193)
at org.eclipse.net4j.util.container.ManagedContainer.createElem ent(ManagedContainer.java:490)
at org.eclipse.net4j.util.container.ManagedContainer.getElement (ManagedContainer.java:281)
at org.eclipse.net4j.util.container.ManagedContainer.getElement (ManagedContainer.java:265)
at org.eclipse.emf.cdo.spi.server.ContainerQueryHandlerProvider .getQueryHandler(ContainerQueryHandlerProvider.java:42)
at org.eclipse.emf.cdo.internal.server.Repository.getQueryHandl er(Repository.java:840)
at org.eclipse.emf.cdo.internal.server.QueryManager$QueryContex t.run(QueryManager.java:269)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
... 3 more



Re: [CDO] Query [message #547544 is a reply to message #547542] Sun, 18 July 2010 16:49 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6682
Registered: July 2009
Senior Member
This is a multi-part message in MIME format.
--------------070805090700000001010803
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Hi Miranda,

The stack trace indicates that you're not using a DBStore as that one would have found the requested query handler before the ContainerQueryHandlerProvider is asked. What store are you using?

Cheers
/Eike

Contact: http://www.esc-net.de Blogger <http://thegordian.blogspot.com>Twitter <http://twitter.com/eikestepper>Linkedin <http://de.linkedin.com/in/eikestepper>Xing <http://www.xing.com/profile/Eike_Stepper>
Article: What exactly is inside that p2 repository? < http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html>

I'm going to Eclipse Summit Europe 2010 <http://www.eclipsesummit.org/>



Am 18.07.2010 18:27, schrieb Miranda:
> Hi! Thanks for reply!!!
> I am using version CDO 3.0.
> This is exception:
>
> Exception in thread "main" org.eclipse.net4j.signal.RemoteException: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
> at org.eclipse.net4j.signal.RequestWithConfirmation.setRemoteEx ception(RequestWithConfirmation.java:128)
> at org.eclipse.net4j.signal.SignalProtocol.handleRemoteExceptio n(SignalProtocol.java:520)
> at org.eclipse.net4j.signal.RemoteExceptionIndication.indicatin g(RemoteExceptionIndication.java:53)
> at org.eclipse.net4j.signal.Indication.doExtendedInput(Indicati on.java:55)
> at org.eclipse.net4j.signal.Signal.doInput(Signal.java:315)
> at org.eclipse.net4j.signal.Indication.execute(Indication.java: 49)
> at org.eclipse.net4j.signal.Signal.runSync(Signal.java:240)
> at org.eclipse.net4j.signal.Signal.run(Signal.java:146)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unkno wn Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> Caused by: org.eclipse.net4j.util.container.FactoryNotFoundException: Factory not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
> at org.eclipse.net4j.util.container.ManagedContainer.getFactory (ManagedContainer.java:193)
> at org.eclipse.net4j.util.container.ManagedContainer.createElem ent(ManagedContainer.java:490)
> at org.eclipse.net4j.util.container.ManagedContainer.getElement (ManagedContainer.java:281)
> at org.eclipse.net4j.util.container.ManagedContainer.getElement (ManagedContainer.java:265)
> at org.eclipse.emf.cdo.spi.server.ContainerQueryHandlerProvider .getQueryHandler(ContainerQueryHandlerProvider.java:42)
> at org.eclipse.emf.cdo.internal.server.Repository.getQueryHandl er(Repository.java:840)
> at org.eclipse.emf.cdo.internal.server.QueryManager$QueryContex t.run(QueryManager.java:269)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
> at java.util.concurrent.FutureTask.run(Unknown Source)
> ... 3 more
>
>
>
>

--------------070805090700000001010803
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--------------050508020006020605060803
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
Hi Miranda,<br>
<br>
The stack trace indicates that you're not using a DBStore as that
one would have found the requested query handler before the
ContainerQueryHandlerProvider is asked. What store are you using?<br>
<br>
<!--WISESTAMP_SIG_37998_START--><span style="color: black;">
<div dir="ltr">
<div>Cheers<br>
/Eike<br>
<br>
</div>
<div style="padding: 5px 0pt; font-family: arial,sans-serif;
font-size: 13.3px;"><span style="color: gray;">Contact: <a
href="http://www.esc-net.de">http://www.esc-net.de</a></span>
<a href="http://thegordian.blogspot.com" style="padding: 0pt
2px; color: blue; font-size: 10pt;" _service=""><img
src="cid:part1.05020208.00090507@esc-net.de" alt="Blogger"
style="vertical-align: middle; padding-bottom: 5px;"
border="0" height="16" width="16"></a><a
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style="vertical-align: middle; padding-bottom: 5px;"
border="0" height="16" width="16"></a></div>
<div style="color: gray; font-size: 13.3px; padding-bottom:
5px;">Article: <span style="color: blue; text-decoration:
underline;"><a
href=" http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html"
undefined="">What exactly is inside that p2 repository?</a></span></div>
<div><br>
<a href="http://www.eclipsesummit.org/"><img
src="cid:part5.08000603.00000602@esc-net.de" alt="I'm
going to Eclipse Summit Europe 2010" border="0"
height="100" width="130"></a>
<br>
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</span><!--WISESTAMP_SIG_37998_END--><br>
<br>
Am 18.07.2010 18:27, schrieb Miranda:
<blockquote cite="mid:i1va12$qn1$1@build.eclipse.org" type="cite">Hi!
Thanks for reply!!!
<br>
I am using version CDO 3.0.
<br>
This is exception:
<br>
<br>
Exception in thread "main"
org.eclipse.net4j.signal.RemoteException:
org.eclipse.net4j.util.container.FactoryNotFoundException: Factory
not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
<br>
    at 
org.eclipse.net4j.signal.RequestWithConfirmation.setRemoteEx
ception(RequestWithConfirmation.java:128)
<br>
    at 
org.eclipse.net4j.signal.SignalProtocol.handleRemoteExceptio
n(SignalProtocol.java:520)
<br>
    at 
org.eclipse.net4j.signal.RemoteExceptionIndication.indicatin
g(RemoteExceptionIndication.java:53)
<br>
    at 
org.eclipse.net4j.signal.Indication.doExtendedInput(Indicati
on.java:55)
<br>
    at org.eclipse.net4j.signal.Signal.doInput(Signal.java:315)
<br>
    at 
org.eclipse.net4j.signal.Indication.execute(Indication.java: 49)
<br>
    at org.eclipse.net4j.signal.Signal.runSync(Signal.java:240)
<br>
    at org.eclipse.net4j.signal.Signal.run(Signal.java:146)
<br>
    at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unkno wn
Source)
<br>
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
<br>
    at java.lang.Thread.run(Unknown Source)
<br>
Caused by:
org.eclipse.net4j.util.container.FactoryNotFoundException: Factory
not found: org.eclipse.emf.cdo.server.queryHandlerFactories[SQL]
<br>
    at 
org.eclipse.net4j.util.container.ManagedContainer.getFactory
(ManagedContainer.java:193)
<br>
    at 
org.eclipse.net4j.util.container.ManagedContainer.createElem
ent(ManagedContainer.java:490)
<br>
    at 
org.eclipse.net4j.util.container.ManagedContainer.getElement
(ManagedContainer.java:281)
<br>
    at 
org.eclipse.net4j.util.container.ManagedContainer.getElement
(ManagedContainer.java:265)
<br>
    at 
org.eclipse.emf.cdo.spi.server.ContainerQueryHandlerProvider
.getQueryHandler(ContainerQueryHandlerProvider.java:42)
<br>
    at 
org.eclipse.emf.cdo.internal.server.Repository.getQueryHandl
er(Repository.java:840)
<br>
    at 
org.eclipse.emf.cdo.internal.server.QueryManager$QueryContex
t.run(QueryManager.java:269)
<br>
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
Source)
<br>
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown
Source)
<br>
    at java.util.concurrent.FutureTask.run(Unknown Source)
<br>
    ... 3 more
<br>
<br>
<br>
<br>
<br>
</blockquote>
</body>
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Re: [CDO] Query [message #547545 is a reply to message #547544] Sun, 18 July 2010 17:01 Go to previous messageGo to next message
Miranda is currently offline MirandaFriend
Messages: 25
Registered: June 2010
Junior Member
I am using db store i think. This is my config file:
<store type="db">
<mappingStrategy type="horizontal">
<property name="qualifiedNames" value="false"/>
<property name="toManyReferences" value="ONE_TABLE_PER_REFERENCE"/>
<property name="toOneReferences" value="LIKE_ATTRIBUTES"/>
</mappingStrategy>

<dbAdapter name="h2"/>
<dataSource class="org.h2.jdbcx.JdbcDataSource"
uRL="jdbc:h2:_database/cdodb1"/>

</store>
</repository>

Thanks!
Re: [CDO] Query [message #547549 is a reply to message #547545] Sun, 18 July 2010 17:34 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6682
Registered: July 2009
Senior Member
Am 18.07.2010 19:01, schrieb Miranda:
> I am using db store i think. This is my config file:
> <store type="db">
> <mappingStrategy type="horizontal">
> <property name="qualifiedNames" value="false"/>
> <property name="toManyReferences" value="ONE_TABLE_PER_REFERENCE"/>
> <property name="toOneReferences" value="LIKE_ATTRIBUTES"/>
> </mappingStrategy>
>
> <dbAdapter name="h2"/>
> <dataSource class="org.h2.jdbcx.JdbcDataSource" uRL="jdbc:h2:_database/cdodb1"/>
>
> </store>
> </repository>
>
Can you send me a zip with your code so that I can reproduce it? Privately if it's confidential, or recode it please to make it public...


Re: [CDO] Query [message #547561 is a reply to message #547549] Sun, 18 July 2010 20:21 Go to previous messageGo to next message
Nils Israel is currently offline Nils IsraelFriend
Messages: 72
Registered: May 2010
Member
Hi Eike and Miranda,

is it possibly a typo?
The query language string in
org.eclipse.emf.cdo.server.internal.db.SQLQueryHandler is "sql" and not
"SQL". (But "HQL" for hibernate store works, because
info.getQueryLanguage().toLowerCase() in comparison is used in the
hibernate query handler ;)

Best Regards,
Nils
Re: [CDO] Query [message #547606 is a reply to message #547561] Mon, 19 July 2010 06:41 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6682
Registered: July 2009
Senior Member
This is a multi-part message in MIME format.
--------------090907070005030700010002
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Hi Nils,

you seem to be right, regarding both the "sql" and the "hql/HQL/hQl/Hql/..." handlers. Personally I think that an equalsIgnoreCase() is not adequate at all for IQueryHandlerProviders (here: IStoreAccessor) because on repository level there's by default a container lookup for a query handler and this lookup is case sensitive. Of course one may register multiple keys for the same factory so it's hard to judge if the HibernateStoreAccessor way should be considered a flaw or not.

Martin, I think the query language check should a t least be in the query handler provider (i.e. the HibernateStoreAccessor) and not in the handler itself. So that it could be extended and registered with a different name.

Cheers
/Eike

Contact: http://www.esc-net.de Blogger <http://thegordian.blogspot.com>Twitter <http://twitter.com/eikestepper>Linkedin <http://de.linkedin.com/in/eikestepper>Xing <http://www.xing.com/profile/Eike_Stepper>
Article: What exactly is inside that p2 repository? < http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html>

I'm going to Eclipse Summit Europe 2010 <http://www.eclipsesummit.org/>



Am 18.07.2010 22:21, schrieb Nils Israel:
> Hi Eike and Miranda,
>
> is it possibly a typo?
> The query language string in
> org.eclipse.emf.cdo.server.internal.db.SQLQueryHandler is "sql" and not
> "SQL". (But "HQL" for hibernate store works, because
> info.getQueryLanguage().toLowerCase() in comparison is used in the
> hibernate query handler ;)
>
> Best Regards,
> Nils

--------------090907070005030700010002
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--------------050809060408090003050604
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Hi Nils,<br>
<br>
you seem to be right, regarding both the "sql" and the
"hql/HQL/hQl/Hql/..." handlers. Personally I think that an
equalsIgnoreCase() is not adequate at all for IQueryHandlerProviders
(here: IStoreAccessor) because
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
on repository level there's by default a container lookup for a
query handler and this lookup is case sensitive. Of course one may
register multiple keys for the same factory so it's hard to judge if
the HibernateStoreAccessor way should be considered a flaw or not.<br>
<br>
Martin, I think the query language check should a t least be in the
query handler provider (i.e. the HibernateStoreAccessor) and not in
the handler itself. So that it could be extended and registered with
a different name.<br>
<br>
<!--WISESTAMP_SIG_92858_START--><span style="color: black;">
<div dir="ltr">
<div>Cheers<br>
/Eike<br>
<br>
</div>
<div style="padding: 5px 0pt; font-family: arial,sans-serif;
font-size: 13.3px;"><span style="color: gray;">Contact: <a
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<div style="color: gray; font-size: 13.3px; padding-bottom:
5px;">Article: <span style="color: blue; text-decoration:
underline;"><a
href=" http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html"
undefined="">What exactly is inside that p2 repository?</a></span></div>
<div><br>
<a href="http://www.eclipsesummit.org/"><img
src="cid:part5.02090504.05040204@esc-net.de" alt="I'm
going to Eclipse Summit Europe 2010" border="0"
height="100" width="130"></a>
<br>
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</div>
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</span><!--WISESTAMP_SIG_92858_END--><br>
<br>
Am 18.07.2010 22:21, schrieb Nils Israel:
<blockquote cite="mid:i1vnnq$185$1@build.eclipse.org" type="cite">
<pre wrap="">Hi Eike and Miranda,

is it possibly a typo?
The query language string in
org.eclipse.emf.cdo.server.internal.db.SQLQueryHandler is "sql" and not
"SQL". (But "HQL" for hibernate store works, because
info.getQueryLanguage().toLowerCase() in comparison is used in the
hibernate query handler ;)

Best Regards,
Nils
</pre>
</blockquote>
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Re: [CDO] Query [message #547608 is a reply to message #547606] Mon, 19 July 2010 07:03 Go to previous messageGo to next message
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Thinking once more, I come to the conclusion that there's a bug in the HibernateStoreAccessor:

320217: HibernateStoreAccessor grabs all query languages but throws exceptions for unhandled ones
https://bugs.eclipse.org/bugs/show_bug.cgi?id=320217

Note that now the DBStoreAccessor also accepts both "sql" and "SQL", but no other cases.

Cheers
/Eike

Contact: http://www.esc-net.de Blogger <http://thegordian.blogspot.com>Twitter <http://twitter.com/eikestepper>Linkedin <http://de.linkedin.com/in/eikestepper>Xing <http://www.xing.com/profile/Eike_Stepper>
Article: What exactly is inside that p2 repository? < http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html>

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Am 19.07.2010 08:41, schrieb Eike Stepper:
> Hi Nils,
>
> you seem to be right, regarding both the "sql" and the "hql/HQL/hQl/Hql/..." handlers. Personally I think that an equalsIgnoreCase() is not adequate at all for IQueryHandlerProviders (here: IStoreAccessor) because on repository level there's by default a container lookup for a query handler and this lookup is case sensitive. Of course one may register multiple keys for the same factory so it's hard to judge if the HibernateStoreAccessor way should be considered a flaw or not.
>
> Martin, I think the query language check should a t least be in the query handler provider (i.e. the HibernateStoreAccessor) and not in the handler itself. So that it could be extended and registered with a different name.
>
> Cheers
> /Eike

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Thinking once more, I come to the conclusion that there's a bug in
the HibernateStoreAccessor:<br>
<br>
320217: HibernateStoreAccessor grabs all query languages but throws
exceptions for unhandled ones<br>
<a class="moz-txt-link-freetext" href="https://bugs.eclipse.org/bugs/show_bug.cgi?id=320217">https://bugs.eclipse.org/bugs/show_bug.cgi?id=320217</a><br>
<br>
Note that now the DBStoreAccessor also accepts both "sql" and "SQL",
but no other cases.<br>
<br>
<!--WISESTAMP_SIG_69574_START--><span style="color: black;">
<div dir="ltr">
<div>Cheers<br>
/Eike<br>
<br>
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undefined="">What exactly is inside that p2 repository?</a></span></div>
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Am 19.07.2010 08:41, schrieb Eike Stepper:
<blockquote cite="mid:4C43F383.3000606@esc-net.de" type="cite">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
Hi Nils,<br>
<br>
you seem to be right, regarding both the "sql" and the
"hql/HQL/hQl/Hql/..." handlers. Personally I think that an
equalsIgnoreCase() is not adequate at all for
IQueryHandlerProviders (here: IStoreAccessor) because
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
on repository level there's by default a container lookup for a
query handler and this lookup is case sensitive. Of course one may
register multiple keys for the same factory so it's hard to judge
if the HibernateStoreAccessor way should be considered a flaw or
not.<br>
<br>
Martin, I think the query language check should a t least be in
the query handler provider (i.e. the HibernateStoreAccessor) and
not in the handler itself. So that it could be extended and
registered with a different name.<br>
<br>
<!--WISESTAMP_SIG_92858_START--><span style="color: black;">
<div dir="ltr">
<div>Cheers<br>
/Eike</div>
</div>
</span></blockquote>
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--------------070700050902010107070308--

--------------030604030305030802070808--


Re: [CDO] Query [message #547695 is a reply to message #547608] Mon, 19 July 2010 11:29 Go to previous message
Martin Taal is currently offline Martin TaalFriend
Messages: 5468
Registered: July 2009
Senior Member
Ha yes, I saw you already solved the bugzilla, thanks!

gr. Martin

On 07/19/2010 09:03 AM, Eike Stepper wrote:
> Thinking once more, I come to the conclusion that there's a bug in
> the HibernateStoreAccessor:
>
> 320217: HibernateStoreAccessor grabs all query languages but throws
> exceptions for unhandled ones
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=320217
>
> Note that now the DBStoreAccessor also accepts both "sql" and "SQL", but
> no other cases.
>
> Cheers
> /Eike
>
> Contact: http://www.esc-net.de Blogger
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> Article: What exactly is inside that p2 repository?
> < http://thegordian.blogspot.com/2010/05/what-exactly-is-insid e-that-p2.html>
>
> I'm going to Eclipse Summit Europe 2010 <http://www.eclipsesummit.org/>
>
>
>
> Am 19.07.2010 08:41, schrieb Eike Stepper:
>> Hi Nils,
>>
>> you seem to be right, regarding both the "sql" and the
>> "hql/HQL/hQl/Hql/..." handlers. Personally I think that an
>> equalsIgnoreCase() is not adequate at all for IQueryHandlerProviders
>> (here: IStoreAccessor) because on repository level there's by default
>> a container lookup for a query handler and this lookup is case
>> sensitive. Of course one may register multiple keys for the same
>> factory so it's hard to judge if the HibernateStoreAccessor way should
>> be considered a flaw or not.
>>
>> Martin, I think the query language check should a t least be in the
>> query handler provider (i.e. the HibernateStoreAccessor) and not in
>> the handler itself. So that it could be extended and registered with a
>> different name.
>>
>> Cheers
>> /Eike


--

With Regards, Martin Taal

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