Regarding view object

Hi
I am using jdev 11.1.2.1.0
I want to fire a post query trigger on page load of adf.
Is there any way to do the same.
If yes then please provide the solution
Thanks

Hi,
see this document
http://docs.oracle.com/cd/E23943_01/web.1111/b31974/appendix_formstriggers.htm#sm0347
Frank

Similar Messages

Questions on ADF View Objects, Links and Iterators

I have a number of questions regarding using ViewObjects in applications where there are alot of relationships between tables.
First, lets say that I have ViewObject SomeView that was added to the App Module (AM) as VO1. And because it has a number of "detail" records that have to be iterated through in a "report like" view it has those other VO's added under it as "children" in the AM.
So I have
VO1 (an instance of SomeView)
--> VO2 (an instance of some other view)
--> VO3 (an instance of some other view)
that is used on pages where only a single VO1 is shown at a time.
Now because I had another page I wanted to make that had a listing of all SomeView objects. Some of the fields in SomeView are foreign keys to records in VO2 and VO3 and while I don't want to show all the fields from VO2 and VO3, I do want to show a name field from each rather than just the foreign key.
My experience (though I've never read this anywhere) tells me that when doing a "table" that is a list of rows from a VO, you can't display info from the child VO's because the child VO's are on whatever record corresponds to the "currentRow" in the parent VO and just displaying the rows in a rangeSet doesn't make each the "currentRow" so even we display 10 records in a for loop, the "currentRow" is just one, and the child VO's iterators aren't moved as we go through the for loop. (Can someone confirm if I am correct on this conclusion????)
So the only way I know of to show some field from a related table in each row is to make the VO have the entity objects from the related tables be part of the view as references. Is this the only way?
If I do that on a view that didn't have other views as children defined in the AM I don't have any problem and it works like I want.
But if I do it on a view that did have other views as children defined in the AM it makes the page(s) using that view with the children iterators behave badly. Half the information quits showing up, etc.
For example, ... if I go to the "SomeView" which was defined with only one entity object association, and I add the entity objects (that are the basis of instances of VO2 and VO3 ) as referenceable only, it totally breaks the page where I display a single VO1 and use it's VO2 and VO3 children. IS THIS NORMAL OR AM I MISSING SOMETHING?
So, is the solution that I have to have more view objects defined for different purposes ?
Can anyone give any general guidelines for when/where to use different view objects vs. when to use different iterators. I'm not having much luck with using secondary RSI's and haven't found much info on them.
Also, how about issues of naming iterators that are in various binding containers (ie. UI Model for a page). If I do and LOV it creates an iterator and gives it a default name like ViewNameIterator1. If I already have a different page that uses a regular (non LOV) iterator with that name, and the user goes back and forth between those pages, is that a clash?
Finally, I've read a couple of Steve Muench's blogs on View Link consistency but I'm not sure what the rules are on when it applies and doesn't. How you turn it on or off, etc. One of his examples in http://radio.weblogs.com/0118231/2004/02/27.html talks about it in the context of two view objects that are NOT typically "linked" in a master/detail kind of way. Like an AllDepartments and a DepartmentsLessThan view. Do you have to create a View Link between them to have results of one be reflected in the other if they aren't used in the same page in a web app? Or does it happen automatically (with the caveat that you have to do the rowQualifies method). Just feels like I'm missing some pieces.
Thanks in advance,
Lynn

Hi,
I am also interested in a best-practice note from oracle.
Currently we store history in seperate history tables for columns that changed. All this implemented in our BaseEoImpl overriding the EntityImpl.prepareForDML().
Thanks

A dynamic View object at runtime

Say there is an inputtext component and one LOV. User will enter a number, say 7, and then press a Submit button. And then in the LOV, user will be able to see the numbers from 1 to 7.
Is it possible to achieve the same?

Hi,
am not sure what exactly you are trying to achieve here,
but from your description, it looks like a query dependency to me..
So in your VO that will be used as the List of Values for the attribute you want, create a View Criteria that meets the requirement you want (seems like 'Less than or Equal To' is what you need).
So eventually, you will end up with a ViewCriteria and one bindVarialble in that LOV View Object.
Since you havent described your BC model, I can only assume that you have one main VO and both UI component are binded to attributes of that VO.
Now go back to your main VO and update the LOV View AcCessor to use the ViewCriteria specifying the proper value on the Bind Variable.
Hope this helps,
Regards,
Dimitrios.

Error in Creation of a New View Object from Existing Entites

I define a Complex JOIN in the expert mode of the View Object Creation Mode. On trying to access the VO, the system returns an error, unable to creat View Objecy.
THe SQL Statement begins with
SELECT * from ( select ...My actual Query)
Is it possible to define ur own view objects with the same flexibility as the Data Tables

Hi Saket,
Following will be required for created a custom business object.
1. Object Type - ZTEST (Internal Techincal Key)
2. Object Name - ZTESTNAME (Technical Key Name)
3. Name - TEST (Name of BO, it is used while selecting the object type)
4. Description - (Short Description of BO)
5. Program - ZTESTPROGRAM (ABAP program in which the methods of the object type are implemented)
6. Application - A or B.. etc (Area to which your BO is related)
Please remember that you can learn these basic things by giving F1 help on those fields and in HELP.SAP.COM.
Regards,
Gautham Paspala

Maintaining data of view objects in cache memory for repeated usage

Hi,
     We are developing an application which is having around 800 viewobjects that will be used as LOV in different screens. Therefore, it is decided to create a separate project for all such LOV view objects and keep the same in shared scope so that the data can be made availabe across the application.
     The application also communicates with different database schemas based on the logged-in county. For a particular user, LOV view object LovView1 should get the data fetched from Schema1 whereas for user2, the same LovView1 should get the data from Schema2.
     For this, we have created n number of ApplicationModules like AM1, AM2 etc in the project each one being connected to different database. A base application module also has been created and all the county specific AMs extend this base AM. Also all the LOV view object instances are included in this base AM so that they will be available in the county specific AMs also.The entire project is made as an ADF Library jar and this base AM is utilized by other projects for mapping the LOV by attaching the library.
     At runtime, whenever a particular viewobject is accessed, the findViewObject() method of the baseAM has been overridden and the logic is built in such a way to get the logged in user's county code from a session variable and based on the county, the corresponding AM is communicated with and the view object is returned.
     The view objects of the LOV project is used as LOV as well as for doing some other backend processes. In such cases, the view object is obtained and necessary filter conditions are appended to the view criteria and is executed to get the filtered rowset.
Now, my questions are,
1. Is it enough to create the jar for the LOVProject and access the view objects from the same baseAM across the application?
2. I wish to keep all the data in cache memory to avoid repeated DB hits for all the LOV view objects. How it can be achieved? To be more precise, consider two users user1 and user2 logging into the application with different county. When user1 access a LOV viewobject for the first time, data needs to be fetched from the DB, kept in application scoped cache memory and return the rowset. On subsequent calls to the viewobject, the data needs to be retreived from the cache and not from the DB. When user2 also access the same LOV viewobject, the same logic as explained for user1 should happen. How can I achieve this? Actually my doubt is when user2 access, will the data pertaining to user1 remains available in cache? If not, how to make it retain the data in cache?
3. I also wish to append a particular where condition to a viewobject irrespective of other considerations like logged in county, existing view criteria etc.. How can I do this? A separate thread for this requirement has been posted in the forum Including additional where clause conditions to view criteria dynamically
Kindly give me your suggessions.
Thanks in advance.
Regards.

Hi Vijay,
regarding your questions:
1. What is the difference between "TimesTen In-Memory Database" and
"In-Memory Database Cache" in terms of features and licensing model?
==> Product has just been renamed and integrated better with the Oracle database - Times-Ten == In-Memory-Cache-Database
2. Is "In-Memory Database Cache" option integrated with Oracle 10g
installable or a separate installable (i.e. TimesTen installable with only
cache feature)?
==> Seperate Installation
3. Is "In-Memory Database Cache" option same as that of "TimesTen Cache
Connect to Oracle" option in TimesTen In-Memory Database?
==> Please have a look here: http://www.oracle.com/technology/products/timesten/quickstart/cc_qs_index.html
This explains the differences.
4. After integrating "In-Memory Database Cache" option with Oracle 10g, data
access will happen only through Oracle sqlplus or OCI calls. Am I right here
in making this statement?
==> Please see above mentioned papers
5. Is it possible to cache the result set of a join query in "In-Memory
Database Cache"?
==> Again ... ;-)
Kind regards
Mike

Filter view object by selected values from list of values

Hello,
I've the following problem with my ADF Application. I have three view objects in my application module. Two of them are connected via a view link. For example take users, who are connected to their departments. The remaining view object consists of factories. Now I want to show the user/department dependency in a tree table and the available factories in a list of values. This list of values should be used to filter the shown users.
I've already tried to use bind variables in the users view object. But I don't know how to fill them with the value of the list of values.
Can someboy give me a tip how to solve this problem.
Best regards,
Enno

Hi Enno,
Try this:
- Have a AM method with one parameter(which takes user from the list of values) and inside AM method write code to set the bind parameter value and execute the query
Sample Code
public void filterByUser(String user){
   //Get your UserViewObject instance to userVO
   userVO.setNamedWhereClauseParam("<Bind_Variable_Name>", user);
   userVO.executeQuery();
}- Expose the method as client interface
- Drop the method (Data Control) as a button on to the page and pass the listofvalues value as a value to the method binding param
Something like this: ${bindings.<User>.inputValue}
- Finally refresh the master and detail tables based on the ListOfValues selection by setting partialTriggers property to the listofvalues component id
Hope it is clear
Sireesha
Edited by: Sireesha Pinninti on Oct 15, 2009 4:54 AM

ExecuteQuery method of view object taking much time to execute

Hi All,
I am using a view object and execute the VO query using executeQuery method in VOImpl java.
But, problem is, it is taking long time to bring the results after executing the query after setting the parameters. Same query in TOAD gives 4 seconds. While executing using executeQuery method, it is taking 5 mins.
It is urgent issue. Please help me. Thanks.
Regards, Soorya

Hi Kali,
Thanks for your prompt response.
Yes. It has bind parameters. I have printed the statement before and after the executeQuery method
++VOImpl Code snippet++
setWhereClauseParams(params);
System.out.println("before executing query:Time:"+System.currentTimeMillis());
executeQuery();
System.out.println( "after executing query:Time:"+System.currentTimeMillis());
+++
I have removed some conditions in the query as it is business confidential. Please find the jdev log.
++++++++
before executing query:Time:1322071711046
[724] Column count: 41
[725] ViewObject close prepared statements...
[726] ViewObject : Created new QUERY statement
[727] ViewObject: VO1
[728] UserDefined Query: SELECT DISTINCT
ai.invoice_num invoice_num
FROM ap_invoices_all ai
, ap_checks_all ac
WHERE ...
ai.org_id = :p_orgid
AND ac.id = :p_id
[729] Binding param 1: ,468,
[730] Binding param 2: 247
[731] The resource pool monitor thread invoked cleanup on the application module pool, AM, at 2011-11-23 23:41:32.781
after executing query:Time:1322072052875
+++++++
Regards,
Soorya

ADF forms based on BPM human tasks - Invoking webservices/view objects.

Hi All,
Is anyone aware of whether the following is a valid implementation that has been carried out before.
1. ADF forms based on BPM 11G human tasks.
2.The ADF forms invoke webservices via Webservice data controls. It is pertinent to note that the webservice bring back complex data types. We've tried writing a few forms, resulting in data benig brought back, but not being able to print them to the screen.
3. The ADF forms also use View Object based on sql to bring back tables of data. If view objects are embedded within the forms, the applciation gives rise to a null pointer exception.
Considering the form will be invoked via a BPM worklist entry, is there a setting or configuration we should consider before hand. Is this feasible, is there knowledge of this being done commercially.
Any examples or information regarding the same will be immensely helpful.
Thanks and Regards,
Preethi.
NB : I have posted this in the BPM forum as well as I feel it is relevant to both BPM and ADF.

Hi Joonas.
Plese let me explain me better for your understanding
A big summary for what I meant it's the following:
1- In the procces you made, when you add the HT activity, you have to implement it, this means declare the input(s) parameters you want. This implementation create the .task file.
2- Create an application, and projects as HT you have. Each poject are based on the .task file, and automatically create a Data Control (for each project based on a .task) with all you need.
This w'll be an empty application, so you can customize it all you want. The task selected should have all the parameters previously defined. Those parameters can change if you want.
2- Create a page(s) in the task flow for the task implementation. You can even split the the payload of the task in differents pages, create your custom pages and any logic you need.
3- An important aspect is how to match these application with the HT implemented in the process. It's possible, it's a configuration en the Enterprise Manager.
4- Deploy your application
All these are explain in the book I mentioned
Th book you can find it here:
https://blogs.oracle.com/soacommunity/entry/oracle_soa_suite_11g_handbook_1
Regards Dariel.
PS: Please, let me know if you need more details.

BI Publisher report based on VO (View Objects)

Hi,
I would like to know, can we generate BI Publiher report based on VO (view Objects ). Actually we are creating VOs for ADF and want to know if that can be used for generting BIP report.
Thank,s
Niraj

Hi Niraj
Yes, you can, there is a method on the VO to get the data from it in an XML format. Then use our APIs >> documentation to format it with a template.
Regards, Tim

How to create ADF UI based on polymorphic view objects

Hi,
I'm using JDeveloper build JDEVADF_11.1.1.3.PS2_GENERIC_100408.2356.5660. I created a simple application based on Steve's example #10 [url http://blogs.oracle.com/smuenchadf/examples/]ViewRow and EntityObject Polymorphism.
I added a men-only attribute "Age" to the "Men" VO and filled it with an arbitrary value in MenRowImpl.java:
public String getAge() {
return (String) "45";//getAttributeInternal(AGE);
}Running the TestModule works perfectly - a row of type "Men" displays the "Age" attribute whereas a row of type "Women" doesn't.
Afterwards, I setup an ADF ViewController Project and created a JSPX with a read-only form based on the "People" datacontrol with navigation buttons. Running that page always shows the same set of attributes independent of the row type. That's expected behaviour because the binding is defined at design time.
So my question is: can I somehow achieve the same behaviour for polymorphic VOs as the business component tester shows?
Kind regards,
Markus

Andrejus' example shows how to calculate different values for the same attribute based on overridden view objects. That's not exactly what I'm looking for. I need to display a (at least partly) different set of attributes that changes while the user scrolls through the records of the result set.

Problem with 2 View Objects based on One Entity -Probably a Bug in ADF BC

Hi
I am using JDeveloper 10.1.3(SU5) and adf faces and ADF BC and to explain my problem I use HR schema.
First, I created 2 view objects based on countries table named as TestView1 and TestView2. I set TestView1 query where clause to region_id=1 and TestView2 query where clause to region_id!=1 in the view object editor and then I created 2 separated form on these 2 view objects by dragging and dropping from data control palette.
Now when I insert a record in the form based on TestView1 with region_id set to 1 and commit the record and go to the next form I can see the record in the second form which is completely wrong since it is against the where clause statement of the second form.
I am really confused and the situation is very wired and it seems to me something like bug in adf bc.Am I right.Is there any work around or solution for solving this problem.
Any help would be highly appreciated.
Best Regards,
Navid

Dear Frank,
Thank you very much for your quick response.
Reading your helpful comments now I have some questions:
1- I have commited the record in the database so shouldn't the query of view objects be re-queried?
2- We try to use ClearVOCaches (entity_name,false) in afterCommit of the base entity object but unfortunately it does not work correctly. after that,We got root app module and used findViewObject method to find all the view of that entity (we have found them by using name not automaticlly) and called executeQuery of all views. From my point of view it has 2 big disadvantages. First suppose that this entity is an important entity and 4 or 5 viow objects are based on it. Now, For inserting one record we should re-execute 4 or 5 view which I think makes some performance issues. Besides, If during the development one programmer add a new view object based on this entity and don't add the executeQuery in the afterCommit for this view, again we have the same problem. Isn't there at least a way that automatically refresh all related view objects however the performance issue still exists.
3- You mentioned that this issue is handled in the developer guide. Could you kindly give me a refrence which developer guide you mean and which section I should read to overcome this problem.(I have ADF Developer's Guide for Forms/4GL Developer's Guide , however I search for clearVOCaches and surprisingly nothing was found!!!)
4- Could you please give me some hints that from your point of view what is the best method to solve this problem with minimum performance effect.
Any comment would be of some great help.
Thanks in advance,
Navid

Adding New View Objects/Link on "Preview and Print" - Order Acknowledgement

Hi,
Can we add New View Objects/View Links for the existing "Preview and Print" Order Acknowledgement.
I want to add for the 2 new functionalities i.e., for Charges (from OE_PRICE_ADJUSTMENTS_V ) and the Line Level Notes, which is currently not supported by Oracle.
Can anyone help me on acheving this functionality?
Looking forward for your response.
Thanks in advance,
Regards,
Muru

You can do that. You should first create the new business objects(AM, VO, VL) in jdeveloper, create your new regions in jdeveloper, associate the AM to the top level region(stackLayout) you create. Use personalization and add a stack layout in the Preview and Print page, set the extends property to point to the new region which you had created. Donot forget to deploy all the files in middle tier before doing the personalization.
The AM which you had added to the stackLayout will automatically be nested with the root AM of the page during runtime.

How to Use Transient View Objects to Store Session-level Global Variables

hi
Please consider section "40.8.5 How to Use Transient View Objects to Store Session-level Global Variables"
at http://download.oracle.com/docs/cd/E14571_01/web.1111/b31974/bcstatemgmt.htm#ADFFD19610
Based on this documentation I created the example application
at http://www.consideringred.com/files/oracle/2010/ProgrammaticalViewObjectAndRollbackApp-v0.01.zip
It behaves as show in the screencast at http://screencast.com/t/qDvSQCgpvYdd
Its Application Module has a Transient View Object instance "MyEmployeesContextVOVI", as master for the child View Object instance "EmpInCtxJobVI".
On rollback the Transient View Object instance keeps its row and attribute values.
Also when passivation and activation is forced (using jbo.ampool.doampooling=false ) the Transient View Object instance seems to keep its row and attribute values.
questions:
- (q1) Why does the expression #{bindings.MyEmployeesContextVOVIIterator.dataControl.transactionDirty} evaluate as true when a Transient View Object instance attribute value is changed (as shown in screencast at http://screencast.com/t/qDvSQCgpvYdd )?
- (q2) What would be a robust approach to make a Transient View Object instance more self-contained, and manage itself to have only one single row (per instance) at all times (and as such removing the dependency on the Application Module prepareSession() as documented in "5. Create an empty row in the view object when a new user begins using the application module.")?
many thanks
Jan Vervecken

Thanks for your reply Frank.
q1) Does sample 90 help ? http://blogs.oracle.com/smuenchadf/examples/
Yes, the sample from Steve Muench does help, "90. Avoiding Dirtying the ADF Model Transaction When Transient Attributes are Set [10.1.3] "
at http://blogs.oracle.com/smuenchadf/examples/#90
It does point out a difference in marking transactions dirty by different layers of the framework, "... When any attribute's value is changed through an ADFM binding, the ADFM-layer transaction is marked as dirty. ...".
This can be illustrate with a small change in the example application
at http://www.consideringred.com/files/oracle/2010/ProgrammaticalViewObjectAndRollbackApp-v0.02.zip
It now shows the result of both these expressions on the page ...
#{bindings.MyEmployeesContextVOVIIterator.dataControl.transactionDirty}
#{bindings.MyEmployeesContextVOVIIterator.dataControl.dataProvider.transaction.dirty}... where one can be true and the other false respectively.
See also the screencast at http://screencast.com/t/k8vgNqdKgD
Similar to the sample from Steve Muench, another modification to the example application introduces MyCustomADFBCDataControl
at http://www.consideringred.com/files/oracle/2010/ProgrammaticalViewObjectAndRollbackApp-v0.03.zip
public class MyCustomADFBCDataControl
extends JUApplication
@Override
public void setTransactionModified()
    ApplicationModule vApplicationModule = (ApplicationModule)getDataProvider();
    Transaction vTransaction = vApplicationModule.getTransaction();
    if (vTransaction.isDirty())
      super.setTransactionModified();
}Resulting in what seems to be more consistent/expected transaction (dirty) information,
see also the screencast at http://screencast.com/t/756yCs1L1
Any feedback on why the ADF Model layer is so eager to mark a transaction dirty is always welcome.
Currently, question (q2) remains.
regards
Jan

How to use the Calculated attibute in view object

Hi,
I have a view object query with the calculated attribute name as 'TRANCODE' in the below sql.This query works for the initial page loading.
After the page gets loaded, there is a search section in the same page at the top.
Here i will have to build the whereclause to the same query and retrieve the values.
i am using jDeveloper 10.1.3.1, with adf and jHeadstart.
Can some one tell as how to use the calculated attribute TRANCODE in whereclause?
SELECT /*+ first_rows(10) */
BatchCntl.FILE_CNTL_ID,
CASE WHEN chk_bit(Entry.ENTRY_FLAGS, 2)='Y' OR Entry.ENTRY_SUBSTATUS = 'D' OR Entry.ENTRY_SUBSTATUS = 'J'
THEN
CASE eeh.TRAN_CODE
WHEN '21' THEN 'C'
WHEN '22' THEN 'C'
WHEN '31' THEN 'C'
WHEN '32' THEN 'C'
WHEN '26' THEN 'D'
WHEN '27' THEN 'D'
WHEN '36' THEN 'D'
WHEN '37' THEN 'D'
ELSE eeh.TRAN_CODE
END
ELSE
CASE Entry.TRAN_CODE
WHEN '21' THEN 'C'
WHEN '22' THEN 'C'
WHEN '31' THEN 'C'
WHEN '32' THEN 'C'
WHEN '26' THEN 'D'
WHEN '27' THEN 'D'
WHEN '36' THEN 'D'
WHEN '37' THEN 'D'
ELSE Entry.TRAN_CODE
END
END AS TRANCODE,
FROM Batch_Cntl BatchCntl, Entry, ENTRY_EDIT_HIST eeh
WHERE (BatchCntl.BATCH_TYPE = 'E')
AND (BatchCntl.BATCH_STATUS in ('A','D','R','P'))
AND entry.in_batch_cntl_id = BatchCntl.BATCH_CNTL_ID
and Entry.fi_rt = eeh.fi_rt (+)
and Entry.entry_id = eeh.entry_id (+)
AND (Entry.ENTRY_STATUS in ('A','D','R','P'))
ORDER BY BatchCntl.BATCH_CNTL_ID, Entry.entry_id
regards
Raj.

Let's say your application module is com.yourcompany.someapp.services.MyService, and let's say you authored a method like the following in the MyServiceImpl.java file:
public void doSomething(int i, String s) {
}and you exposed this AM custom method using the AM editor.
BC4J design time will automatically create you the com.yourcompany.someapp.services.common.MyService interface that will look like this if you go look at the source code:
package com.yourcompany.someapp.services.common;
import oracle.jbo.ApplicationModule;
public interface MyService extends ApplicationModule {
public void doSomething(int i, String s);
}To use your custom method from a client, just cast your ApplicationModule to your custom interface like this:
import com.yourcompany.someapp.services.common.MyService;
MyService mySvc = (MyService)yourAM;
mySvc.doSomething(1,"foo");

Lov based on a dynamic view object

Build JDEVADF_11.1.2.0.0_GENERIC_110531.1615.6017
Hi,
I have a database table containing a column with the Name of a Table as content.
I created a dynamic view and overwrite this with a method in Appmodule.
Then I add to the element in the main view the Lov. I execute the method in JSP page.
But the SelectOnechoice list is empty!
Where is the problem? How can I create a Lov based on a dynamic view object?
Thanks in advance and best regards
Edited by: NewBB on 12.08.2011 00:53

Hi Neliel,
thank you for your reply.
My problem is not the same. I can also see my dynamic view objects as selectonechoice. I have a table T1 has a column t1c1 (Number),
another table T2 (dynamic view object) with two columns t2c1 (Number) and t2c2 (varchar2).
In my application I want to represent the values of t1c1 as selectonechoice with the values of t2c2.
and that does not work. My list is empty. Any idea???

Regarding view object

Similar Messages

Maybe you are looking for