Object Relational Mapping - How to? - With SQLJ? - What brings the future?

Hi there,
we are developing applications for masterdata
maintainance and masks with fast user interaction using a two-tier architektur and a layered java application on the client.
Currently we are using TOPLink for the ORM stuff.
As we need a simple and efficient way to encapsulate gui stuff from database interaction i am interessted in SQLJ for the descripted purpose.
These are my questions:
1. Can I use SQLJ with a Oracle database lower than 8i
2. Is there a runtime fee for SQLJ?
3. How does SQLJ relate to the app server
hpye?
4. Where can I get SQLJ?
5. Do I need JDeveloper in combination with SQLJ or can I use any other IDE?
Thanks for your input.
Regards,
Wolfgang Rothmayer.

SQLJ is actually orthogonal to use of ORM. It is an embedded language API for (static) SQL database access in contrast to JDBC.
If you are using SQL Object types (Oracle 8i and later) then there is the JPublisher tool to map these into Java classes.
Oracle also provides the BC4J (Business Components for Java) product for object-relational access. This is used mostly in conjunction with JDeveloper.
So from an ORM perspective you would not be asking for SQLJ.
To the SQLJ-specific questions:
1. Yes. SQLJ relies on Oracle JDBC for database access. Oracle 7.2 and later can be accessed.
2. No.
3. SQLJ can be used in any tier - just like JDBC can.
4. In the OTN download area. It is also part of all Oracle database releases since 8.1.5.
5. SQLJ comes with a command line interface (similar to Javac). It is also directly supported in the Oracle server-side JavaVM, which has an integrated Java compiler and SQLJ translator.
IBM VisualAge for Java has added support for SQLJ. For other IDEs you would be on your own, though I have heard that JBuilder users have been able to integrate SQLJ in their IDE (if somebody sends us a recipe for using SQLJ in their favorite IDE, we'll be happy to include that in future distributions). SQLJ could be integrated either through the commandline, or -for tighter support- through its IDE interface package in sqlj.framework.ide.

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ignore the post.
sorry for my stupidity
==
Hello,
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Message was edited by:
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?

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