Programmatically populate ADF BC view object based on user's JAZN roles

I currently have a ADF BC read-only view object that is based on an sql query.
I would like to assign values to the bind variables based upon the user's JAZN
roles. My problem is that I am uncertain how to obtain the roles the user has.
Any help would be appreciated.
Thanks,
Kenrick

I do believe this topic is discussed in detail in the 4GL Developer's Guide. Section 30.8 describes everything how to obtain user info programatically. Aside from pointing you in a direction that will get you where you need to be, I can't be of much help. I'll be crossing that hurdle in the coming months.
Download the guide from this page:
http://www.oracle.com/technology/documentation/jdev/b25947_01/index.html. I printed and bound it and use it as my bible.
Good Luck,
Jeff

Similar Messages

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

How to populate data into view object

Hi all,
I am quite new with ViewObject.
I have one data table which is binding with view object.
I want to populate data into view object from my managed bean.
how can i achieve this kind of scenario?
actually i try to get view object as in the following. but i get only null.
ViewObject viewobject = DCIteratorBinding.getViewObject();
With Regards,
Wai Phyo

Hi,
You could use the following code snippet to get handle to view object from the iterator.
FacesContext fc = FacesContext.getCurrentInstance();
BindingContainer bindings =
(BindingContainer)fc.getApplication().evaluateExpressionGet(fc,
"#{bindings}",
BindingContainer.class);
DCBindingContainer bc = (DCBindingContainer)bindings;
DCIteratorBinding iterator =
bc.findIteratorBinding("<ITERATOR_ID>");
ViewObject viewObject = iterator.getViewObject();
// Perform operations on the view objectThanks,
Navaneeth

Separate App Module, View Object based on Select not EO: Best practice?

Hi,
I have a list of base tables(parameters) that are used everywhere in my application for selection components (List, Combo, Radio).
I'm considering creating a separate app module with a view object based on query for each table.
I have created a BaseTableAM application module for managing those tables, Entity objects and View Objects in update mode.
Those tables are rarely changed.
Example of table:
ItemType
item_type_id = primary key
name = description
In the BasetableAM:
ItemTypeEO entity object
ItemTypeVO updateable view object based on related entity object.
Now in my project I will create combo boxes for selection of the item_type_id.
Separate application module:
SelectionViewAM composed of View Objects based on Select statements and not on Entity Objects.
Example of view object ItemTypeViewVO:
SELECT ItemType.ITEM_TYPE_ID,
ItemType.NAME
FROM ITEM_TYPE ItemType
All view objects in this application module will be read-only and for selection only.
By basing all those View Objects on select statements not based on Entity Objects I suppose there will be no locking and "value changed" management => less overhead.
Is this a good practice?
Being read-only I could have based those View Object on Entity Object with flag updateable set to no, what would you recommend?
By creating a separate Application Module for those selection view objects, I know that update will not be possible.
Thank you for your advice.
Frederic

See this article for View Object tuning tips:
http://www.oracle.com/technology/products/jdev/tips/muench/voperftips/index.html
Are you planning to use this AM as a nested AM inside other application modules?
If you don't the "selection AM" will have its own, separate database connection/transaction.
If you do, it will share connection, transaction with its containing "root" AM.
It may not be relevant to your application, but just realize (which is explained in the article I point to above) that view objects that are not related to entity objects do not "see" pending changes in the current transaction. That feature depends on the VO/EO cooperation. It's fine to build VO's without an EO -- in fact we've made it easier to do this in 10.1.2 in the Design Time wizards -- but you just want to make sure you realize what features it's giving up. If you don't need those EO-related features, then by all means create an Expert Mode VO that's not related to EO's.

ADF - Multple View Objects in one ADF table - Jdeveloper 11g

Hi,
I'm using Jdeveloper 11g, is there a way to use multiple view objects in one ADF table? And if so, do you have an example?
In my case the view objects are not based on a database table they were created based on an ESB wsdl, one is for person and one is for address.
Any information or pointers you could provide would be appreciated.
Thanks!

Hi,
That would be a good solution, however, I'm supposed to see if there is a way to use the VOs that were created for person and address. Even better if the solution requires little coding.
Is it possible to combine these two VOs into a single VO to use with an ADF table or to use both of them in a single table? Or is there some other solution that would enable me to use the person and address VOs in a similar manner?
Thanks!

[SOLVED] ADF BC : View Object "second level" Entity reference issue

hi
If I insert a row in a View Object that uses "two levels" of Entity references, the attributes of the Entity on the "second level" don't get a value.
Consider these tables:
MY_ROW (MY_ROW_ID, MY_ROW_STUFF, MY_ROW_LU1_ID)
MY_ROW_LU1 (MY_ROW_LU1_ID, MY_ROW_LU1_STUFF, MY_ROW_LU1_LU1_ID)
MY_ROW_LU1_LU1 (MY_ROW_LU1_LU1_ID, MY_ROW_LU1_LU1_STUFF)
Where MY_ROW.MY_ROW_LU1_ID is a "look-up" in MY_ROW_LU1 and MY_ROW_LU1.MY_ROW_LU1_LU1_ID is a "second level look-up" in MY_ROW_LU1_LU1.
I created default Entities and Associations on these tables and a View Object that uses all 3 Entities (MyRow as Updatable, MyRowLu1 and MyRowLu1Lu1 as Reference).
See example code in
http://verveja.footsteps.be/~verveja/files/oracle/ViewObjectEntityReferenceIssue-v0.03.zip
(contains no Java code, all out-of-the-box ADF BC)
problem scenario:
If run the MyRowService Application Module in the Oracle Business Component Browser and "open" the MyRowViewAll View Object instance, I get the rows and their related "look-up values".
If I click the "Insert a new record" button and fill out values for MyRowId, MyRowStuf and MyRowLu1IdEntity, I only get "look-up" values for the "first level". While the "second level" stays empty.
For example, a MyRowLu1IdEntity of "2003" gives a MyRowLu1Stuff value of "2003 stuff", but no value in MyRowLu1Lu1Stuff.
What am I doing wrong? What should I change to also get a value in the "second level" MyRowLu1Lu1Stuff attribute?
many thanks
Jan Vervecken

Jan,
If you create a view object on Emp and Dept, with Dept as a reference entity, you might choose to build the view object to only include the:
Emp.Empno (required, since it's the PK of Emp entity usage)
Emp.Ename (included since you want to show the ename)
Dept.Deptno (required, since it's the PK of the Dept entity usage)
Dept.Dname (included since you want to show the dname)
The wizard enforces the inclusion of the required attributes above.
When you run this view object, a join is performed and you see the reference data.
Now, if you want to allow the user to UPDATE the reference data, you need to add one more attribute to the list of attributes:
Emp.Empno
Emp.Ename
Emp.Deptno (To allow user to change Deptno employee belongs to)Dept.Deptno
Dept.Dname
At this point, not only is the join performed for you, but the ADF BC reference mechanism reacts to any modification of the Emp.Deptno attribute, correctly showing the reference information for that new foreign-key-referenced department (even before commiting and requerying, at which time the SQL join would pickup that correct, related information).
The "second level" problem you describe in this thread is simply the same issue described here as a master/first-level-detail situation, taken to its logical next step. If you want the end-user to be able to change the second-level detail to which the first-level-detail is associated, you need to include the first-level-detail's foreign key attributes in the view object's select list. Otherwise, there is no foreign key attribute whose value-change event the framework can react to in order to coordinate the related reference data in the row.
I've blogged a link to a working example of a four-level reference information view object here:
http://radio.weblogs.com/0118231/2007/05/09.html#a818
based on the HR schema.

ADF Join View Object

we have a Join View Object joining Customer and Order tables. The Output in ADF table is like this
CustomerName------------OrderID
John------------------------------------1
John------------------------------------2
John------------------------------------3
Tom------------------------------------80
Tom------------------------------------81
Tom------------------------------------82
We need to show the out but as
CustomerName------------OrdersPlaced
John------------------------------------1,2,3
Tom------------------------------------81,82,83
Please suggest how we can acheive this
Thanks
Edited by: user11922045 on Oct 19, 2010 2:53 PM

Our requirement is similar to a Order - OrderDetail example, (where the number of details many times wont exceed 3)
The Order table has just the Order number and some name... and Order detail has order item, price and date detail item requested ..
So we just need to show the list of Order and for each order( the details..item no, item, price, date time req)..
As you can see we can fetch it in one single query..
I can't ask the user to click on the Order number/name to see the Order details in adifferent table every time.
Typically when i was using java.. i used to populate the details into the Order VO as an ArrayList of Order Items. w could delete just one detail/ as well as a complete Order all together.
Please suggest.

ADF BC View Objects: Disappearing where clauses

Playing around with the 11g Technical Preview I find out that sometimes the where clauses - added to View Objects by means of the new "Join Type" field in the VO-editor UI - disappear.
I'm not able to reproduce exactly and "on demand", but it seems to happen when the sources of more than one View Object are open simultaneously and/or the XML definition of a View Object is edited directly on the Source-tab.

Today I succeeded in reproducing:
Two tables:
TAB_MASTER:
ID NUMBER NOT NULL
DESCRIPTION VARCHAR2 NOT NULL
TAB_DETAIL:
ID NUMBER NOT NULL
MASTER_ID NUMBER NOT NULL
DESCRIPTION VARCHAR2 NOT NULL
TAB_DETAIL.MASTER_ID is a foreign key referencing TAB_MASTER.ID.
Steps to reproduce:
1. Generate default ADF BC objects from database tables.
2. Open definition of TAB_DETAIL View Object.
3. Go to the Entity Objects tab
4. Add TAB_MASTER Entity Object to the Selected Entities Objects. Association and Join Type are filled in automatically.
5. Go to the Query tab and go to SQL tab in de Property Inspector. Where clause is filled.
6. Go to the Attributes tab and click Add from Entity...
7. Add TAB_MASTER.DESCRIPTION attribute.
8. Again, go to the Query tab and go to SQL tab in de Property Inspector. Where clause is still filled.
9. Go to the Attributes tab and select MASTER_ID attribute.
10. Click icon to add List Of Values
11. In List Of Values dialog add View Object TAB_MASTER and add the correct pairs of List Return Values for the ID and (MASTER) DESCRIPTION attributes.
12. After completing the List Of Values dialog go to the Query tab -> SQL tab again. The where clause added to join the Entity Objects (see step 5.) is cleared, resulting in a wrong SQL statement for the View Object.

How to add row in multiple view object based on common entity object.

Hi ,
I have
Jdeveloper version - 10.1.3.3.0
Oracle Database - 11g R2
I have a situation where i have to show data from one table in three adf tables on jsf page depending on a flag value in a column in table. For this purpose i have done the following steps
a) Created an entity object on the database table .
b) Created three view objects on this entity object and edited the view object's SQL and included the where clause
                   WHERE A.USER_PERSONAL_NO = :P_USER_PERSONAL_NO AND
                       A.AUTH_TYPE = 'LF'
                   The auth_type cloumn decided in which view object the data will be shown
Now, when i query the data from database by executing the query of these view objects the data is shown correctly in all three view objects. Till here there seems every thing ok
Now , i have to provide the logic to add records in the adf tables for this i have provided add button in action facet of all three tables which are binded to methods in managed bean,
when i add a record in a adf table by add button the new row which is created is shown in all three tables . I cant understand why this is happening , please help me to solve this problem.
How can i make it possible so that the record appears only in that adf table in which the record is added.
The method for adding record is
            Row rw = currentAM.getWfRecommAuths().createRow();
            rw.setAttribute("UserPersonalNo",this.getQuery_personal_no().getValue());
            rw.setAttribute("AuthPersonalNo","");
            rw.setAttribute("AuthType","LX");
            currentAM.getWfRecommAuths().last();
            currentAM.getWfRecommAuths().insertRow(rw);
           Please help , thanks in advance.

Hi,
have a look at polymorphic view objects
http://download.oracle.com/docs/cd/E21764_01/web.1111/b31974/bcadvvo.htm#CEGDCCCB
Frank

Connecting ADF BC view object w/ param to a JSF Table?

I'm brand new to JDev so this is probably an easy one, I'm still trying to grasp some of the concepts: I have created an application module that has one view object containing a simple parameterized query (page is a simple search form - user enters keywords - I pass keywords to database and return results.) This Data Control shows up in the Data Control Palette and I am able to associate this with a table on the JSF page. Where I'm struggling is how / where do I tell JDev to bind the query parameter? In the examples from the help files, they show in the Data Control Palette a method with parameters. My Data Control Panel just shows the application module labeled as a Data Control with no parameters? In the Application Module (where I have defined the parameterized SQL stmt), in the Client Interface menu item, there are no methods available. Do I need to create the method even if I don't want to override the default functionality? Any help appreciated.
Also, many of the tutorial and examples look like they use the EJB/Toplink approach - are there good examples or tutorial for using ADF BC and ADF Faces?
Thanks. BTW - this product looks awesome so far! I was using myEclipse - this product is light years ahead.

This new 10.1.3-production JSF/ADFBC tutorial covers a lot of ground and includes an example of building the search page that you're trying to build, too :-)
http://otn.oracle.com/obe/obe1013jdev/masterdetail_adf_bc/master-detail_pagewith_adf_bc.htm
The trick is noticing that a View Object with named bind parameters includes an additional built-in operation in its "Operations" folder called ExecuteWithParams. Dropping this operation onto your page gives you the choice of creating a "Parameter Form" for your VO's bind variables. If you then drop the VO as a readonly table to the same page and run the page, you are done. :-)
Try to do that in Eclipse in two drag-drop operations! ;-)
It warms my heart to hear you say that about JDeveloper versus Eclipse... Really makes my day!

Performance Issues due to Loading of ADF/JClient View Objects

Hi,
I developed a two-tier ADF/JClient application.
When the ADF/JClient application opens for the first time, there's a big delay
However opening it subsequently, takes less than half of the time to open the screen.
I think it might the xml files of different view objects which the framework loads for the first time, and thus takes a lot of time. And after that, the time to open the application reduces.
We have around 200 view objects in our application. Can this be the reason?
If yes, then can we load the view objects before ahead, or can we just load them at the very time they are requested ?
Thanks,
Makrand Pare

Hi Makrand,
Check this out:
"Limiting Fetching of Business Components Attributes in ADF Swing
http://www.oracle.com/webapps/online-help/jdeveloper/10.1.3/state/content/navId.4/navSetId._/vtTopicFile.developing_jclient_applications%7Cjui_plimitingfetching%7Ehtml/
Note: In local mode deployment (the client and Business Components reside in the same VM), the fetching of attribute properties is not supported.
You can optimize startup time for a Business Components client application and the remotely deployed Business Components by specifying the list of view object attributes that your client uses. If you create a project without the metadata, by coding to the API, you will want to add fetchAttributeProperties() to the bootstrap code of the client forms with a list of only the attributes used by the form. Without this method call, your client form would fetch all control hint properties (including the attributes format and label for example) for all the attributes of the named view objects in the application module, in a single network roundtrip.
For example, when you do not intend to use all the attributes of the ADF Swing form's bound view object, with the fetchAttributeProperties() method, your ADF Swing form fetches only the information required to layout your forms, while ignoring the attributes you do not require.
Note: In local mode deployment (the client and Business Components reside in the same VM), the fetching of attribute pro
Calling fetchAttributeProperties() will prevent property methods such as getFormat() or getLabel() from being called on the Business Components attribute definition whenever the form is created."
Vlad

BC Archive - problem with opening view object based on entity from archive

We have encountered a weird problem with a reusable BC library on different PCs.
Library was imported into a project following steps in section 25.7 of the ADF guide.
A view object was created using some of the entities from the library.
Model tested successfully with view object (using AppModule tester).
Page developed with no problems.
Application copied to a different PC.
BC JAR files set up in lib folder and removed/readded to application model project. When attempting to open view object, get the error below.
However, the View object still tests successfully using the AppModule tester.
The page using the View object still runs successfully.
I believe the problem is that when the archive was originally imported, it was imported from a different location. The Containees tag in the project .jpx file references that path name. But even when I edited the path name, I still could not open the view object. Do we have to remove and redo the import of the library each time the application is copied to a different machine?
Error when attempting to edit View Object:
oracle.jbo.dt.objects.JboException: The following object(s) referred to objects that could not be found:
com.guideworkstv.ibo.webstagemodel.AcctReqForReviewViewObj
com.guideworkstv.ibo.webstagemodel.AcctReqForReviewViewObj
Could not find the following referenced object(s):
com.guideworkstv.ibo.model.webstage.entities.IboAccountRequest
com.guideworkstv.ibo.model.webstage.entities.IboAccountRequest
     at oracle.jbo.dt.objects.JboException.throwException(JboException.java:81)
     at oracle.jbo.dt.objects.JboPackage.loadResolveReferencesXML(JboPackage.java:1397)
     at oracle.jbo.dt.objects.JboPackage.finishObjectsLoad(JboPackage.java:1042)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:972)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:951)
     at oracle.jbo.dt.objects.JboBaseObject.loadFromXMLFile(JboBaseObject.java:2615)
     at oracle.jbo.dt.objects.JboPackage.loadFromXMLFile(JboPackage.java:880)
     at oracle.jbo.dt.objects.JboPackage.checkForLoad(JboPackage.java:451)
     at oracle.jbo.dt.objects.JboPackage.findContainedObjectByName(JboPackage.java:440)
     at oracle.jbo.dt.objects.JboPackage.findObjectByName(JboPackage.java:1999)
     at oracle.jbo.dt.objects.JboApplication.findObjectByName(JboApplication.java:959)
     at oracle.jbo.dt.objects.JboUtil.fileURLToObject(JboUtil.java:510)
     at oracle.jbo.dt.jdevx.ui.JdxJboAddin$1.handleCopy(JdxJboAddin.java:997)
     at oracle.jdeveloper.compiler.CopyTranslator.handledByListeners(CopyTranslator.java:125)
     at oracle.jdeveloper.compiler.CopyTranslator.translate(CopyTranslator.java:263)
     at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildGraph(UnifiedBuildSystem.java:300)
     at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildProjectFiles(UnifiedBuildSystem.java:516)
     at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildProject(UnifiedBuildSystem.java:609)
     at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.buildAll(UnifiedBuildSystem.java:666)
     at oracle.jdeveloper.compiler.UnifiedBuildSystem$CompileThread.run(UnifiedBuildSystem.java:894)

We have resolved this problem by making sure that all machines have identical paths for both the working and the lib directories. It would be nice not to have to do this though.

Filter transient view object based SOC

i have a SOC in a popup which is built on a Transient VO in a page on which popup is displayed.
i need to filter contents of this SOC based on value selected in another SOC.
both SOCs are based on same transient VO which is denormalized from a relationship point of view.
transient vo rows are populated programatically.
what is the best way to filter a transient view object whose rows will be displayed in UI as SOC.
VO does not have any EO or SQL query defined. only attributes which are populated programatically.

Hi!
I encountered the same problem, and found out that each param[] entry is itself an Object[]. So with the following code you can find the contents:
Object[] bindvar = (Object[])params[0];
String varName = (String)bindvar[0];
Object varValue = bindvar[1];Hope this helps,
Jeroen

ADF BC View object with invalid character in column names

Hello
I Have a table with columns containing # character , for example ORDER# , When i create the read only view object j developer automatically renames this to order, but when i try to sort on that column or try search (filter) i get error that column order is not found
what i can change to resolve this
Thanks for your time
Srinivas

Thanks frank i will do that , as a work around , the error is resolved by changing the query from select order# , other fields to select order# as ordernumber etc
Thanks
Srinivas

ADF : Merging View Objects in JDeveloper

There is a view object called ProjectVO, under this view object I have ProjectApplicationVO(Hierarchy In Data Controls). So using PPR Ican get project Applications related to each project.
But there is a another viewObject ApplicationVO which has ApplicationDocumentVO (Hierarchy In Data Controls)in it.So I can get documents related to each Applications using PPR easily.
Now I have a new requirement..... Which is ,
If I click on a project from ProjectVO, I should get ProjectApplications related to that project which I can do using hierarchy present in Data Controls. But after this if user clicks on any application from ProjectApplicationsVO, I need to display documents related to that Project Application.
Could anyone please let me know how to implement it?
Existing ViewObjects:
ProjectVO---->ProjectApplicationsVO
DocumentVO---->ApplicationDocumentVO
Requirement:
Project----> ProjectApplications----->Application Documents

Hi,
I have created the View Link but I am not able to add this view link as a 3rd hierarchical in AM...
Can you please tell me how to add this View Link as a third hierarchy in the Application Module?
Edited by: 977652 on Jan 9, 2013 4:39 AM

Programmatically populate ADF BC view object based on user's JAZN roles

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