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Published on 2010-04-26T05:03:43Z
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I know how to table in google BigTable.I have one doubt regarding this.what are all the datatype supported by google BigTable.
Thanks in advance
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Hi,
I wrote a stateless EJB method allowing to get an entity in "read-only" mode.
The way to do this is to get the entity with the EntityManager then detach it (using the JPA 2.0 EntityManager).
My code is the following:
@PersistenceContext
private EntityManager entityManager;
public T getEntity(int…
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I am using the AndroMDA plugin for maven to generate code from an uml diagram made in MagicDraw.
When the code is generated, AndroMDA desings the JPA annotation for the persitence layer. I think that at the compilation process AndroMDA uses Naming Strategies to determine the Table and Column names…
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I want to setup my database with initial data programmatically. I want to populate my database for development runs, not for testing runs (it's easy). The product is built on top of Spring and JPA/Hibernate.
Developer checks out the project
Developer runs command/script to setup database with initial…
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I am getting this error when I am running my eclipselink project.
[EL Warning]: 2008.12.05 11:47:08.056--java.lang.NoClassDefFoundError: org/jboss/resource/adapter/jdbc/ValidConnectionChecker was thrown on attempt of PersistenceLoadProcessor to load class com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker…
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So, I've got a DAO that I used to load and save my domain objects using JPA. I finally managed to get the transaction stuff working (with a bunch of help from the folks here...), now I've got another issue.
In my test case, I call my DAO to load a domain object with a given id, check that it got…
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I'm hitting what appears (to me) strange behavior when I pull data from the google datastore over JDO. In particular, the query executes quickly (say 100 ms), but finding the size of the resulting List< takes about one second! Indeed, whatever operation I try to perform on the resulting list takes…
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http://code.google.com/appengine/docs/python/tools/uploadingdata.html is not clearly understand. Where i should call the bulkloader.py or appcfg.py? Should i import the csv file to local Google App Engine SDK first? How to keep the upload and download data process in existing application for datastore…
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I'm using Google Web Toolkit with java and google datastore as database.
The entity class has arraylist and on trying to retrieve the data from data base I'm getting the exception:
Type 'org.datanucleus.sco.backed.ArrayList' was not included in the set of types which can be serialized by this SerializationPolicy…
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if I have a Customer object with a list of orders, declared using the db.ReferenceProperty
after a while I may have huge amount of orders in there, if I pull the Customer object would I be in danger of pulling the complete set of orders?
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I'm working on a flash game written in pure actionscript 3.0 in Flex.
I've just finished implementing replays for the game, but want to store the top 10 hiscores' replay data on my google-app-engine'd website.
I'm using Java for the app-engine stuff in Eclipse in java but I have no idea how to…
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