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Questions tagged [kundera]

Kundera is a JPA 2.1-compliant object-datastore mapping library for NoSQL datastores.

The idea behind Kundera is to make working with NoSQL databases drop-dead simple and fun. Kundera is being developed with following objectives:

  1. To make working with NoSQL as simple as working with SQL
  2. To serve as JPA-compliant mapping solution for NoSQL datastores.
  3. To help developers, forget the complexity of NoSQL stores and focus on the domain model.
  4. To make switching across data-stores as easy as changing a configuration.

Project Location: https://github.com/impetus-opensource/Kundera

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Cassandra Not able to save with Kundera after deleting row

While trying to work on Casandra we Recently faced a strange issue. Our current implementation is Cassandra + Spring MVC + Kundera. Issue:: We are trying to save the object via persist method of EntityManager. But the behaviour is very…
Puneet
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Using Cassandra and MySQL together with JPA in Play framework

I would like to use Cassandra NoSQL server with an RDBMS in Play 2.3.0! Started to build it up using Kundera, according to this tutorial: http://recipes4geeks.com/2013/07/06/play-nosql-building-nosql-applications-with-play-framework/ It works fine,…
Adam Biro
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Persistence unit for class issue

I am using Kundera with mongodb on a windows 7 box. I am trying to use int data type. But I am getting the following error. Exception in thread "main" com.impetus.kundera.configure.schema.SchemaGenerationException: Persistence unit for class : int…
Abhijith Nagaraja
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JPA 2.0 : NoSuchMethodError: javax.persistence.EntityManagerFactory.getCache()Ljavax/persistence/Cache

I am trying to run my spring based web-application on Weblogic 10.3.6. This application uses Apache Cassandra version 2.0.7 for storing/accessing data. We are using JPA 2.0 with a persistence.xml file as follows:
Anand03
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Autowiring Controller doesn't work after adding entityManagerFactory bean

I've wrote a spring mvc webserver which uses NEO4j as data backend. Now i want to expand this with cassandra, so the server should be able to use both databases. I have followed these 2 tutorials on how to combine Kundera (A JPA based Cassandra…
Jonhy
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Can not run Kundera with spring and tomcat

I'm trying to get Kundera up and running in combination with Spring and Tomcat 7 but i get the following error after adding the Kundera dependencies to my pom file. Pom file:
Jonhy
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JPA bad query due to and keyword in parameter of namedquery

I am running one select query using named query in JPA by Kundera. Below is the query: "select bff from FileFolder bff where bff.folder_name=:name and bff.usr_id=:usr_id" If I set parameter value to "test" it is working fine. However, If I set…
Pritish Shah
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What limitations are imposed when using Kundera on an RDBMS, versus other JPA implementations

When using a database like Cassandra, Kundera imposes limitations consistent with the underlying database. The documentation doesn't make clear, however, whether these limitations also apply to RDBMS's used under Kundera. In other words, does…
Ed Staub
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Error kundera.client property is missing for persistence

I'm using Kundera with Spring. kundera version is 2.10, with other version I get different errors. I've tryed to declare Client class in kundera.properties, but it had no effect. With version 2.8 even examples from off website doesn't work. Error…
Dmitrii Rogozin
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Can the Kundera API handle MyObj inside MyParentObj when used with Cassandra

I've seen a lot of Kundera examples where the object being store is fairly simple. You have something like a Car.class and it contains a couple String variables maybe an int mapped using the @Column annotation. I've even seen some List, Set and Map…
Justin
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update object with kundera cassandra

Here is the code: public void storePartner(PartnerInfo partner) throws ConnectionException { EntityManager entityManager = entityManagerFactory.createEntityManager(); entityManager.persist(partner); entityManager.flush(); …
user3187702
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JBAS011466: PersistenceProvider 'com.impetus.kundera.KunderaPersistence' not found error from kundera 2.7.1

I am new to jBoss (7.1) and Kundera (2.7.1) and I'm working on a project and I want to use Cassandra dataSource implementing JPA using Kundera. my persistence.xml is as follows:
user3133577
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Problems accessing Cassandra through Kundera remotely with authorization turned on

I try to connect my play application to Cassandra DB. I tried this tutorial: http://recipes4geeks.com/2013/07/06/play-nosql-building-nosql-applications-with-play-framework/ The difference in my setup is that cassandra is not on my localhost, but in…
Simha Mukha
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change data type for cassandra column value through kundera jpa entity

I am using kundera 2.4 as my JPA interacton with Cassandra . Created Column family in cassandra create column family usageitem with key_validation_class = 'UTF8Type' and comparator = 'UTF8Type' ; The default validation class assumed by cassandra…
ip_x
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Setting consistency level using Kundera Cassandra

How can i set the Consistency level to quorum using Kundera Cassandra using external config files ? we can do that wihthout external config files using:- Map propertyMap = new HashMap(); propertyMap.put(CassandraConstants.CQL_VERSION, …
Gargee Banerjee
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