My experiments with technology

About Myself

I have been working with Java EE related technologies for the past nine and a half years. My area of expertise has been Core Java, EJB, XML, XSLT. My exposure has largely been in persistence and its related technologies. I have dabbled in EJB 1.1, TopLink and the current favorite Hibernate. Besides persistence technologies I have used Open Source technologies like Castor, XStream, Velocity…

I have been a Project Manager for around 3 years in a reputed Indian IT company. However my first love continues to be technology and this site is my oasis where I intend to share my day-to-day technical on goings.

Last year I got an opportunity to move into a more technical role and since then have been cruising thru a number of Java based technologies.

4 Comments

4 responses so far ↓

  • Anupama // October 18, 2008 at 10:09 am | Reply

    Hi

    Please help me out in resolving the following problem

    I have three table NOTE_DETAILS,CUSIP_DETAILS,ORDER_DETALS.
    There is a uni directional one-to-one relation exists between
    NOTE_DETAILS,CUSIP_DETAILS.
    and one-to-many relation exists between NOTE_DETAILS ,ORDER_DETALS.

    When iam updating the NOTE_DETALS bean the CUSIP_DETALS bean,List of
    ORDER_DETALS beans should get inserted automatically.
    Is it possible to do like this.

    Plz advise.

    Thanks
    Anupama

  • Mr. President // October 18, 2008 at 11:26 am | Reply

    Anupama,

    As long as you have defined the hibernate relationships properly any changes made to a persistent object should be automatically done on session.save() invocation. For configuration details please refer my two posts titled “Investigating Hibernate Associations – One to One” and “Investigating Hibernate Associations – One to Many”.

  • Stephane // January 28, 2009 at 2:15 pm | Reply

    Hello !

    Nice blog of yours !

    I just read a nicely written article on hibernate many to many relationship.

    It did the job and solved the issue I had. Cheers!

    As a newbie in Hibernate I now have a question:

    Is there any point in having a UNI-directional many to many relationship..?

    Thanks

    Stephane

    PS: No Grails on your blog..?

  • Mr. President // January 28, 2009 at 2:39 pm | Reply

    Many thanks for your kind words.

    There is definitely a point in having a uni-directional many-to-many relationship. Let’s take the example of a many-to-many relationship between Person and Address or the example in my blog Person and Phone. One would ideally want to navigate from Person to his/her address/phone, but I doubt there are many real-world requirements to move from Phone to Person or Address to Person.

    I hope I have answered your question.

    Sorry but I am not into Grails development. I am currently working on Flex. So you can expect some Flex related stuff soon.

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