ADF (View Object) with open source database

Hi all,
Recently, I am evaluating JDeveloper 9.0.5.2 ADF with an open source database (Firebird).
I follow the instruction to:
1. Create an entity object
2. Create a view object for the entity object in 1
3. Create an application module for the view object in 2
4. Right click on the application module and test -> all worked fine
5. I created a jsp and drag the view (in 2) to it from Data Control Palette
6. Test it in OC4J -> an error occurred (not because of jdbc config)
JBO-27122: SQL error during statement preparation. Statement: SELECT * FROM (SELECT Department.DEPT_NO, Department.DEPARTMENT AS DEPARTMENT1, Department.HEAD_DEPT, Department.MNGR_NO, Department.BUDGET, Department.LOCATION, Department.PHONE_NO FROM DEPARTMENT Department) QRSLT ORDER BY DEPT_NO
GDS Exception. 335544569. Dynamic SQL Error SQL error code = -104 Token unknown - line 1, char 16 SELECT
To my knowledge, the error should be due to Firebird doesn't support the query syntax " select * (select col1, col2... from table) QRSLT where... order by... "
I am quite headache as this query is automatically generated by JDeveloper. I am figuring out whether I can change it. It seems that I have to play with the ViewObjectImpl class.
I do think ADF is an amazing technology. However, is it only so amazing with the Oracle technologies? Please correct me if I am wrong.
Hons

Dear Shay Shmeltzer,
Thank you for your reply. After hours of trying on Firebird, I still get the error:
JBO-27122: SQL error during statement preparation. Statement: SELECT * FROM (SELECT Department.DEPT_NO, Department.DEPARTMENT AS DEPARTMENT1, Department.HEAD_DEPT, Department.MNGR_NO, Department.BUDGET, Department.LOCATION, Department.PHONE_NO FROM DEPARTMENT Department) QRSLT ORDER BY DEPT_NO
GDS Exception. 335544569. Dynamic SQL Error SQL error code = -104 Token unknown - line 1, char 16 SELECT
I then downloaded the MySQL 4.0 and install on my system to do the exact procedures. No error! Thing works fine! Oh man...
For the Firebird case, a strange thing to note is that the data table (I dragged) contains data, but the error message is on top of it.
Actually, I don't have a particular database preference but I do hope ADF can work equally for these open-source databases. I think the problem may also be contributed by Firebird. Hope that I can figure it out this week.
Regards,
Hons

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[b]Open Source Databases ![/b]

Hi every one Is there any body nice who can help me ?
Q---What we can understand by the term Open Source
Databases and products? Can anybody explain with examples
links and information source and Sites ?
Q---Open source Databases are worth investigating and prototyping? What does it mean?
Q--- Open Source Databases are indeed delivering
Medium sized enterprise-scale performance
Scalability
Robustness
Manageability? What does it mean by?
Q--Users & Independant Software vendors with respect to Open source Database?
Q--What we can understand by Open Source DBMS?
Q-- Some companies those have transitioned to Linux from Unix platforms buy minimal support from the Linux distributors and rely instead on support from the Open Source Community?Is this approach comes at cost?
Q-- MySQL is full relational database with SQL support.Users view MySQL as simple, small footprint, and performant?Can any body xplain it more precisely?
Q-- What do you mean by Deadlock detection, ACID(atomicity, consistency, isolation and durability), Row level locking, Open Database Connectivity?
Q--In MySQL Bit-mapped indexing (for large data warehouses)?
Q--Open database Connectivity (ODBC) and Open database source?
Q--How Open Source Database is related to Oracle ? I mean object relational Database?
Thanks in advance
One can reply me on private E-mail adress i.e;
[email protected]

I have been looking into MySql and its not really impressed me. Not sure that there is anything better.
And it depends on your usage.
InstantDB is one http://www.lutris.com/downloads/index.html but it is limited to non-commercial use.
Interbase (firebird) at http://firebird.sourceforge.net/
I believe the unix side usually supports a variety that you could probably search for.
And if cheap is ok, rather than free and open, and using it only for developement then you can get full versions of Oracle and MS SQL Server very cheaply.

ADF panel does not prompt for variable defined in ADF view object.

I have created an ADF Panel, which allows the user to run a few simple queries against an Oracle database done using ADF view objects and ADF view links and ADF application module.
One of these queries lookup detail information about a given database object (Table, view or whatever) from dba_objects. The SQL uses a parameter (:P_OBJ_NAME) that has a default value of “Departments”. If I run the ADF application module by itself outside of the ADF panel, all works fine, it prompts me to provide a value for the parameter :P_OBJ_NAME.
As I said the panel contains the different ADF view links including the one that should prompt the user to provide a value for :P_OBJ_NAME. When I run the panel it does not prompt me for :P_OBJ_NAME, it just uses the default defined value “departments”.
I hope I described my problem for every one to understand. The question obviously is how do I get the ADF panel to prompt the user to provide a value for parameter :P_OBJ_NAME, my expectation was that since the sql in the view object and the application module both are designed to prompt for a value for this parameter then the panel should do just that but it does not.
You expert input would be most appreciated.
Thanks.
Bobby A.
Edited by: Babak Akbari on Aug 13, 2009 8:34 AM
Edited by: Babak Akbari on Aug 13, 2009 11:12 AM

The prompting for a parameter is a feature we built into the ADF Tester - it is not a default behavior you get in your application when you just place a VO on your page.
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Thanks for the replies. Jdeveloper version we use is 11.1.1.6.
I have a follow up question.
We have a programmatic View Object which gets data from 3 different rows and populate them in view rows (We have overridden standard methods like executeQueryForCollection..etc)
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Usually I use ADF View Object when I want to view data from table in Oracle DB.
Now can View Object extract data from file? xml or csv format?
Regards
Erich

Hi,
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Is mysql a free open source database or do you need a license for it in prd

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Hi,
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If you download it from Oracle site, it should have the commercial license tied to it, and you need to pay for that if it is in use for production.
http://www.mysql.com/about/legal/licensing/index.html
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Hi,
I have a requirement to execute the following queries in the application logic. We have YEAR table with mileage rates with different effective dates. If the service date is greater than any of the existing effective dates we need to get the rate with that effective date. if the service date is less than the existing effective dates, then we have to get the rate with least effective date.
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null

Odd, have you disabled caching and indirection? (NoIdentityMap, dontUseIndirection, or alwaysRefresh/disableCacheHits). If so, then this could be the issue.
Otherwise please include the sample code you use to perform this, and verify that you do not have any unusual code in your set/get methods or in descriptor events. Also turn TopLink logging on and include a sample. Also ensure that you do not modify your objects until after registering them in the unit of work, and only modify the unit of work clones.

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Edited by: 942120 on May 1, 2013 8:45 AM
Edited by: 942120 on May 1, 2013 8:46 AM
Edited by: 942120 on May 1, 2013 9:05 AM
Edited by: 942120 on May 1, 2013 9:06 AM

Custom domains are the way to go.
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Edited by: 942120 on May 13, 2013 7:13 AM
Edited by: 942120 on May 13, 2013 7:16 AM

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I am using a View Object with ?-style parameters, with a JClient applet. The query
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a.ID_PERSONA
From SINT_PERSONA_DOCUMENTO a
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Where p.id_persona = p2.id_persona
AND (deno = upper(:p_deno) or
:p_deno is null)
AND (NDOC = :p_ndoc or
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----- Nivel 1: Detalle 0 -----
(java.sql.SQLException) Falta el parámetro IN o OUT en el índice:: 3
How can i do this ?
thanks.

Thanks! that's right the bind variables when i use it on where clause must be required, so i change my sql to:
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p.ID_PERSONA, p.TDOC, p.NDOC, p.DENO
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( Select /*+ index(a SINT_PERSONA_IX2) */
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Implement a View Object with multiple entity objects

Hi
In 'How to' section on the 'otn.oracle.com' (Jdeveloper) web site is tutorial how to implement a View Object with multiple updateable dependent entity objects.
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ADF (View Object) with open source database

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