• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other all forums
this forum made possible by our volunteer staff, including ...
  • Campbell Ritchie
  • Ron McLeod
  • Paul Clapham
  • Bear Bibeault
  • Junilu Lacar
  • Jeanne Boyarsky
  • Tim Cooke
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Stephan van Hulst
  • Tim Holloway
  • salvin francis
  • Frits Walraven
  • Scott Selikoff
  • Piet Souris
  • Carey Brown

JDO with Legacy Systsem

Posts: 28
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
As JDO has been developed using Java Connector Architecture to interact between App Server to Data Source.

If application required to access any Legacy system JDO will do the same job OR still we need Java Connector ??

Ranch Hand
Posts: 33
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Siyaram,

Our PowerMap JDO product has specific features for database integration and transparency to existing RDBMS/ applications. These are standard capabilities and can be used within Java, Tomcat and servlet, or J2EE containers.

Enterprise Edition also includes a JCA resource adapter. This is an optional developer tool, enabling automatic transactioning & enlistment within the J2EE transaction.

Most projects just use the 'explicit' approach and request transactions from code, this seems to be the more popular technique as as most shops do not require the RA.

Let me know if this helps,

Thomas Whitmore
Posts: 18
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator

As you said, JDO is using the system contracts of JCA to integrate within J2EE App Servers.
I'm not aware of any JDO implementation able to use the CCI part of JCA to access Legacy Data Sources.

This will be available in LiDO from xcalia in Q2 2005.
Even in that case you will still need a JCA connector on top of which LiDO will do the transparent mapping, exactly as ORM mapping tools are built on top of JDBC (and you still need a JDBC driver).

Hope this helps.

Best Regards, Eric.
Goodbye moon men. Hello tiny ad:
Thread Boost feature
    Bookmark Topic Watch Topic
  • New Topic