{kundera-discuss} Re: 2 EntityClass in the same PersistenceUnit : find method put null value in my Entity

[mevivs]

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From: kundera-discuss@googlegroups.com [kundera-discuss@googlegroups.com] on behalf of superstarz [ice.gamerz@gmail.com] Sent: 12 July 2012 15:29 To: kundera-discuss@googlegroups.com Subject: {kundera-discuss} Re: 2 EntityClass in the same PersistenceUnit : find method put null value in my Entity

I put logger in all the part of my project. Values are correctely put when I upload files, and the byte[] can be seen in cassandra client. The problem is the object which be returned by find method, when I try with an bad id, my program stop, and I get an error, so my row is correctly found in my DB. The object returned have a goob values String id and String taille are good. But just the byte[] are received null.

The stacktrace appear to the line when I want to use my byte[], and the java null pointer is a result to a execution on null values.

Le mercredi 11 juillet 2012 17:49:15 UTC+2, superstarz a écrit : Hello !

I work on a software for store files in Cassandra DB. I had 1 EntityClass by Files with this var : fileName, size ... and File1 byte[] for store my file in Binary. For increase the performance of my project, I decide to split my File in 2 Entity, 1 with all external value like fileName, author etc .. and an other Entity with just the Byte table. In this case, when I want information about my File, I dont need to load the all my Byte[].

But now, when i try to find my entity for make the download ( p = em.find(FileCassandraData.class, id); ) I get an JavaNullPointerException.

this is the toString of my p object : SQLloggerGED - p=FileCassandradata [Id: 8; tab1: null; tab2: null; tab3: null; tab4: null; taille: 381]

We can see that, the method find works fine, but dont put all the value in the object. When I check in cassandra client, there are values in File column ...

I guess that find contruct the object by using setters right ? My entity Class has this value ; @Column(name = "FILE1") private byte[] tab1;

public void setTab1(byte[] tab1) { this.tab1 = tab1; }

Any ideas ?

[superstarz]

Hello xamry,

If you need more information about this problem you can ask question here, or talk to me on yahoo msgr (icezzz@rocketmail.com). Good luck

[xamry]

I am in the process of testing your scenario and will get back to you as soon as I can

Regards, Xamry

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From: superstarz [reply@reply.github.com] Sent: Thursday, July 12, 2012 7:56 PM To: Amresh Singh Subject: Re: [Kundera] {kundera-discuss} Re: 2 EntityClass in the same PersistenceUnit : find method put null value in my Entity (#85)

Hello xamry,

If you need more information about this problem you can ask question here, or talk to me on yahoo msgr (icezzz@rocketmail.com). Good luck

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Reply to this email directly or view it on GitHub: https://github.com/impetus-opensource/Kundera/issues/85#issuecomment-6936461

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[superstarz]

Hello xamry,

So, I wanted some news about this issues, did you identified the problem ? Is it in the way to resolve ? Thanks sir !

[xamry]

Hi,

There was a bug in com.impetus.kundera.property.accessor.ObjectAccessor class related to byte[] filds reading. I have fixed this and is available in latest trunk branch.

In order to get your code working, replace this class file in your Jar with the the file that I sent you through email.

A similar test case for file reading/ writing is available here: https://github.com/impetus-opensource/Kundera/blob/trunk/kundera-tests/src/test/java/com/impetus/kundera/tests/file/dao/ProfilePictureDaoTest.java

Please let me know if you face any issue.

Regards, Amresh

[superstarz]

GREAT JOB XAMRY THATS WORKS !!!

Thanks a lot !!! :D

[mevivs]

Great. Marking it as close.

-Vivek