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From: Vivek Mishra <vivek.mishra@impetus.co.in>
To: "user@hbase.apache.org" <user@hbase.apache.org>
Subject: RE: Kundera 2.2 released
Thread-Topic: Kundera 2.2 released
Thread-Index: Ac293er0wcKFEqeaRkicZASWAgXCvv//rYqAgAEN1L6AAEV1AIAAcE5g
Date: Fri, 9 Nov 2012 16:28:18 +0000
Message-ID: <557E5EDB02B4C8459878EF1EC723AD28B378DEEF@Mail3.impetus.co.in>
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"Can we always mark yes for Kundera if we list out
all benefit of JPA 2.0 promised? If we can not, why Kundera is declared to
be JPA compatible?"

<Vivek>Yes, you can mark it. It is not a 100% JPA compatible(Kundera never =
claimed it) but it provides all the features in JPA way. Not introducing an=
y new annotation/class specifically other than JPA spec. </Vivek>

Kundera is JPA compatible.

-Vivek


________________________________________
From: yiyu jia [jia.yiyu@gmail.com]
Sent: 09 November 2012 20:41
To: user@hbase.apache.org
Subject: Re: Kundera 2.2 released

Thanks for info. I skim over the FAQ of Kundera. I found this:

*Q:* OK...OK...I understand simplicity, ease of use and all that stuff, but
what about flexibility and power that I am accustomed to while using that
plain vanilla low level library like thrift?
*A:* We understand JPA was built for relational databases and may not
always provide you ways to perform functions (many times with certain
tweaks) that are NoSQL specific. That's the reason we introduced data-store
specific configuration in Kundera-2.0.7. For more on this, refer to


So, it looks like my suspection is reasonable and others asked same
question before already. Can we always mark yes for Kundera if we list out
all benefit of JPA 2.0 promised? If we can not, why Kundera is declared to
be JPA compatible?


On Fri, Nov 9, 2012 at 12:34 AM, Vivek Mishra <vivek.mishra@impetus.co.in>w=
rote:

> Have a look at:
> https://github.com/impetus-opensource/Kundera
> for more details on kundera.
>
> JPA is java persistence API. So w.r.t  HBase, still you can represent
> hbase table in same. Here is the link for kundera-hbase module:
> https://github.com/impetus-opensource/Kundera/tree/trunk/kundera-hbase
>
> -Vivek
> ________________________________________
> From: yiyu jia [jia.yiyu@gmail.com]
> Sent: 09 November 2012 00:26
> To: user@hbase.apache.org
> Subject: Re: Kundera 2.2 released
>
> Hi,
>
> Thanks for info. This is interesting. But, I have a basic question: How c=
an
> Kundera benefit NoSQL programmer? Or, why can kundera benefit a NoSQL
> programming project? I feel it is difficult to group different NoSQL
> technique under one umbellrea as there are too much difference among NoSQ=
L
> databases in terms of db design, target problem etc. Also, my understand =
of
> JPA is that it is mainly a OR mapping technique?
>
> Thanks and regards,
>
> Yiyu
>
>
> On Thu, Nov 8, 2012 at 1:21 PM, Amresh Kumar Singh <
> amresh.singh@impetus.co.in> wrote:
>
> > Hi All,
> >
> > We are happy to announce release of Kundera 2.2.
> >
> > Kundera is a JPA 2.0 based, object-datastore mapping library for NoSQL
> > datastores. The idea behind Kundera is to make working with NoSQL
> Databases
> > drop-dead simple and fun. It currently supports Cassandra, HBase, Mongo=
DB
> > and relational databases.
> >
> > Major Changes in this release:
> > -------------------------------------------
> > * Geospatial Persistence and Queries for MongoDB
> > * Composite keys support for Cassandra and MongoDB
> > * Cassandra 1.1.6 migration
> > * Support for enum data type
> > * Named and Native queries support for REST based access
> >
> > Github Issues Fixes (
> https://github.com/impetus-opensource/Kundera/issues
> > ):
> > ------------------------------------------
> > Issue 136 - JPQL queries without WHERE clause or parameters fail
> > Issue 135 - MongoDB: enable WriteConcern, Safe mode and other propertie=
s
> > on operation level.
> > Issue 133 - Externalize the database connection configuration
> > Issue 132 - problem in loading entity metadata when giving class name i=
n
> > class tag of persistence.xml
> > Issue 130 - Row not fully deleted from cassandra on em.remove(obj) - th=
en
> > cannot reinsert row with same key
> >
> > We have revamped our wiki, so you might want to have a look at it here:
> > https://github.com/impetus-opensource/Kundera/wiki
> >
> > To download, use or contribute to Kundera, visit:
> > http://github.com/impetus-opensource/Kundera
> >
> > Latest released tag version is 2.2. Kundera maven libraries are now
> > available at:
> > https://oss.sonatype.org/content/repositories/releases/com/impetus
> >
> > Sample codes and examples for using Kundera can be found here:
> > http://github.com/impetus-opensource/Kundera-Examples
> > and
> > https://github.com/impetus-opensource/Kundera/tree/trunk/kundera-tests
> >
> > Thank you all for your contributions!
> >
> > Regards,
> > Kundera Team.
> >
> > ________________________________
> >
> > Neustar VP and Impetus CEO to present on 'Innovative information servic=
es
> > powered by Cloud and Big Data technologies'at Cloud Expo - Santa Clara,
> Nov
> > 6th. http://www.impetus.com/events#2.
> >
> > Check out Impetus contribution to build Luminar - a new business unit a=
t
> > Entravision. http://lf1.me/MS/
> >
> >
> > NOTE: This message may contain information that is confidential,
> > proprietary, privileged or otherwise protected by law. The message is
> > intended solely for the named addressee. If received in error, please
> > destroy and notify the sender. Any use of this email is prohibited when
> > received in error. Impetus does not represent, warrant and/or guarantee=
,
> > that the integrity of this communication has been maintained nor that t=
he
> > communication is free of errors, virus, interception or interference.
> >
>
>
>
> --
> ******************************************
> * Mr. Jia Yiyu                                *
> *                                                   *
> * Email: jia.yiyu@gmail.com          *
> *                                                   *
> * Web: http://yiyujia.blogspot.com/*
> *******************************************
>
> ________________________________
>
> Neustar VP and Impetus CEO to present on =91Innovative information servic=
es
> powered by Cloud and Big Data technologies=92at Cloud Expo - Santa Clara,=
 Nov
> 6th. http://www.impetus.com/events#2.
>
> Check out Impetus contribution to build Luminar - a new business unit at
> Entravision. http://lf1.me/MS/
>
>
> NOTE: This message may contain information that is confidential,
> proprietary, privileged or otherwise protected by law. The message is
> intended solely for the named addressee. If received in error, please
> destroy and notify the sender. Any use of this email is prohibited when
> received in error. Impetus does not represent, warrant and/or guarantee,
> that the integrity of this communication has been maintained nor that the
> communication is free of errors, virus, interception or interference.
>


--
******************************************
* Mr. Jia Yiyu                                *
*                                                   *
* Email: jia.yiyu@gmail.com          *
*                                                   *
* Web: http://yiyujia.blogspot.com/*
*******************************************

________________________________

Neustar VP and Impetus CEO to present on =91Innovative information services=
 powered by Cloud and Big Data technologies=92at Cloud Expo - Santa Clara, =
Nov 6th. http://www.impetus.com/events#2.

Check out Impetus contribution to build Luminar - a new business unit at En=
travision. http://lf1.me/MS/


NOTE: This message may contain information that is confidential, proprietar=
y, privileged or otherwise protected by law. The message is intended solely=
 for the named addressee. If received in error, please destroy and notify t=
he sender. Any use of this email is prohibited when received in error. Impe=
tus does not represent, warrant and/or guarantee, that the integrity of thi=
s communication has been maintained nor that the communication is free of e=
rrors, virus, interception or interference.