Skip to main content

Java Data Objects

Image
By
JDO has nothing to do with where methods are executed. JDO simply specifies how the fields of a petent object should be managed in-memory, being transparently stored to and retrieved from an underlying datastore. With JDO, methods are invoked on persistent object by an application, as per any regular in-memory Java object.

JDO has many implementations. Visit the following link to know about the available implementations.

http://db.apache.org/jdo/impls.html
Labels:

Comments

Post a Comment

Popular posts from this blog

SVN red book

By
I normally use Subclipse plugin for Eclipse for SVN operations. It really makes life easy. I am a novice when it comes to performing svn operations using SVN commands. I found a very useful resource for that: HTML version of SVN red book (for subversion 1.5) Hope you find this useful :)
Post a Comment
Read more

How to upload an artifact to maven remote repository?

By
If you want to deploy artifacts that were not build using maven, or which were build using maven but their POMs did not contains the deployment detials, then you need to deploy them using the following: mvn -e deploy:deploy-file -DgroupId=com.test.jpa -DartifactId=jpa-demo -Dversion=1.0.0 -Dpackaging=jar -Dfile=jpa-demo-1.0.0.jar -Durl=http://localhost:8080/archiva/repository/internal/ -DrepositoryId=reppoI d url: specifies the remote maven repository to where the jar is to be uploaded repositoryId: Id repository is secured, repositoryId is used to specify the credentials that are to be used for uploading. Repositories are defined in settings.xml. e.g. <servers>     <server>       <id>deploymentRepo</id>       <username>repouser</username>       <password>repopwd</password>     </server> </servers> Mave...
Post a Comment
Read more