How to construct a new complete view object programmatically

HI,
I want to construct a new complete view object programmatically. I have a result set based on the rows returned from this query i need to build the new vo and show it n a form. Please tell me the complete procedure to do this or else provide me any links.
Thanks
Satya

Hi,
have a look how dynamic tables are created (using af:forEach to iterate the attribute Defs for generating columns). Your approach is similar except that you not only need to know about attributes but also the rows to fecth
1. create a tree binding for the view object
2. create the binding with one hierarchy
3. ensure all attributes are deleted for the tree binding (you do this manually in the PageDef)
4. when executing the query for a new SQL, call clearForRecreate() on the DCIteratorBinding instance
5. On the page, use af:forEach to create the form fields and labels for each row. Like for dynamic tables, you first need to determine the attributes to render (its a nested loop you are going for
6. Updates of the form fields must be through a managed bean
Frank

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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

How to check the values of view object?

Hi all,
I created a new view object by right clicking my application module. Now when I try to retrieve values
of the attributes of the view object I am getting null pointer exception. How do I check whether the view has
some values in it or not manually using select statement ? I try to find the view in my database at database navigator
but it was not there. Kindly help me out in this.
Thanks,
Phanindra.
Edited by: 887737 on Oct 19, 2011 12:53 AM

Hi,
Right click on application module(yourAM in model project) and press Run,Then you can confirm whether your ViewObject is working or not.
Note:
Generally create viewObject using EO based or Query based how did you create viewObject
See:
http://download.oracle.com/otn_hosted_doc/jdeveloper/1012/bc4j/intro/bc_avo.html
http://www.adftips.com/2010/09/adf-model-creating-view-object-vo.html

How to Filter & Sort on Cached view object data?

We are using JDeveloper 9.0.3.4 and implemeting a Struts/JSP application that query's via view object on one table. Is it possible to sort and order by on the view object's cached data? How does one do this?
Thanks
Natalie

As for filtering rows, there are two ways:
1. In the VO that's sorting data (in my article), you can add logic to skip unmatching rows in the following methods:
protected boolean hasNextForCollection(Object qc)
protected ViewRowImpl createRowFromResultSet(Object qc, ResultSet resultSet)
2. In the base VO (unsorted), you can apply a RowQualifier. For example,
oracle.jbo.server.RowQualifier rowQual = new oracle.jbo.server.RowQualifier("EmpDeptNum = 20");
myVO.setRowQualifier(rowQual);
Thanks.
Sung

How to set updatable property of view object on runtime

Hello Gurus,
I am new in adf and using jdev 11.1.2.3.
I have two view object which has view link and they are based on entity object. In master view i have a column with the name of status. The target is if the value of status is 'active' then i want to allow add rows in detail view and if it is inactive then wants to disable adding or editing in the detail view.
I don't know how to do this. I don't know how to get the other view object and how to set update able property and where to write code in entity object class or view object class.
Any advice................
Thanks in Advance

There are multiple possible ways to archive this. As the VOs are in a master-detail relationship, you can opt to add a navigation method to the child back to the parent. This method can be accessed via java or groovy to allow the child access to the master row. Once the child has access you can use this to ask the master for it's status and if it's not active disable the edit and update buttons.
If both master and detail are on the same page in the ui, there is an easier way. Drag the status attribute from the master table onto the page as e.g. inputText. This will create a binding for the attribute which changes if you select a row in the master table. As you don't need to inputtext, switch to the source mode of the page and delete it. This will remove the inputtext put keep the binding. Now you can use hte binding in an EL to set the disable property of other components to true like
<af:commandButton text="commandButton 1" id="cb1" disabled="#{bindings.masterstatus.inputValue ne 'active'}"/>
The button will only be active it the binding for masterstatus is active.
Timo

How to build sql query for view object at run time

Hi,
I have a LOV on my form that is created from a view object.
View object is read-only and is created from a SQL query.
SQL query consists of few input parameters and table joins.
My scenario is such that if input parameters are passed, i have to join extra tables, otherwise, only one table can fetch the results I need.
Can anyone please suggest, how I can solve this? I want to build the query for view object at run time based on the values passed to input parameters.
Thanks
Srikanth Addanki

As I understand you want to change the query at run time.
If this is what you want, you can use setQuery Method then use executeQuery.
http://download.oracle.com/docs/cd/B14099_19/web.1012/b14022/oracle/jbo/server/ViewObjectImpl.html#setQuery_java_lang_String_

How to populate bind variable in view objects where clause in ADF faces

I've got a page with 2 input items.
The user manually enters the first value.
On the second input item I have created a LOV for the item which opens in a popup. How do I restrict the data returned in the LOV using the value entered in the first input item. I have created a bind variable and have included it in the where clause for the view object but how do I populated it.

Here is an example:
Using the HR schema with the EMPLOYEES and DEPARTMENTS tables.
Example is using ADF BC and created an EMPLOYEES entity with an updateable view object for page,
and created a DEPARTMENTS view as a lookup
(SQL: select department_id, department_name from departments where department_name = :DeptName)
1: add method to the backing bean to filter the LOV
public void getTextValueToFilterLOV(ValueChangeEvent valueChangeEvent) {
Object value_from_form = valueChangeEvent.getNewValue();
FacesContext fctx = FacesContext.getCurrentInstance();
Application fapp = fctx.getApplication();
JUFormBinding formBinding = (JUFormBinding)fapp.createValueBinding("#{bindings}").getValue(fctx);
DCIteratorBinding dcBinding = (DCIteratorBinding)formBinding.get("DeptLOVIterator");
ViewObject vo = dcBinding.getViewObject();
vo.setNamedWhereClauseParam("DeptName",value_from_form);
vo.executeQuery();
2. add valueChangeListener to the inputText on the page with an id and autoSubmit="true"
<af:inputText value="#{bindings.LastName.inputValue}" label="#{bindings.LastName.label}" binding="#{backing_DeptForm.inputText3}"
id="inputText3"
autoSubmit="true"
valueChangeListener="#{backing_DeptForm.getTextValueToFilterLOV}">
</af:inputText>
3. reference the LOV with the id name on the partialTriggers property
<af:selectOneChoice value="#{bindings.EmployeesUpdView1DepartmentId.inputValue}"
label="#{bindings.EmployeesUpdView1DepartmentId.label}" binding="#{backing_DeptForm.selectOneChoice1}"
id="selectOneChoice1"
partialTriggers="inputText3">
<f:selectItems value="#{bindings.EmployeesUpdView1DepartmentId.items}"
binding="#{backing_DeptForm.selectItems1}"
id="selectItems1"/>
</af:selectOneChoice>
Summary:
When you entered a text (LastName), that value is passed into the backing bean method.
The Bean method code will find the LOV Iterator and put the value into the bind variable.
Cheers,
Jim

How to filter data returned by View Object

Hi everyone,
I have a custom View Object that I am using to retrieve some data.
I need to implement some business logic to filter the data before displaying it.
I have to go through the rows returned by the underlying View's SQL and selectively decide which row to display. I have been looking around to find some examples that explain how to achieve what I am trying to do but with no luck.
I would really appreciate if anyone of you could give me some pointers!
Many thanks in advance for your help!
Regards,
Sacha

Hi,
expaining the usecase you want to implement for sure helps answering your question.
From a performance point of view, selecting all data to dismiss them on the middle tier doesn't feel right. E.g. if you want to implement selective data fetching for security then e.g using Virtual Private Database (VPD) with the Oracle DB is a better option. Ideally data that you don't want to displayed shouldn't be queried at all.
Frank

How to get first row from View Object cache.

hi,
I am using Jdeveloper 11.1.1.6
can we get first row from View Object cache??
Thanks in Advance.
Best
Shashidhar

Hi Frank,
Thanks for reply!!
My case is:
I have a Query based ViewObject.
One of the field is LOV and remaining fields are in ADF table. the LOV field is out side ADF table when i insert first record in ADF table and i choose LOV filed the value is selected.
when i create second row LOV value got refreshed because both are in same VO.
I need to get the LOV value of first row and set same value to second Row.
Shashidhar

How to populate transient attribute from view object dynamically

I have three 4 tables named as "employee,event,event_progress,and checklist progress". i have created a view object using the first three tables . i ahave also created 5 transient variables in to the same view object.when i dragged the view object in to my page as a table i want to populate those transient attribute.
i have 5 transient attribute which are present as a column value named as chechlist_name in another table "checklist".those all transient attribute also having two sub rows whose data should be populated from the checklist progress table.

Hi
Please post your question on this forum, your question belong to this forum.
JDeveloper and ADF
Muhammad Nasir

How to use bind parameter in view object

in my view object has parameter as below
where :organization_id IS NULL
:organization_id parameter get value from LOV
I can run the page but it show following error :
oracle.apps.fnd.framework.OAException: oracle.jbo.SQLStmtException: JBO-27122: SQL error during statement preparation. Statement: SELECT * FROM (SELECT hou.name organization_name
,hapf.name position_name
,hapf.attribute1 position_fund
,pg.name grade_name
,pbd.budget_detail_id
,hapf.position_id
,pbd.budget_version_id pbd_budget_version_id
,pbv.budget_version_id pbv_budget_version_id
,'Y' VIEW_DETAIL
,'Y' VIEW_DETAIL_OCC
,greatest(hapf.effective_start_date, pbv.date_from) effective_date
FROM pqh_budget_details pbd
,hr_all_positions_f hapf
,hr_all_organization_units hou
,per_grades pg
,pqh_budget_versions pbv
WHERE pbd.budget_version_id = pbv.budget_version_id
AND pbd.position_id = hapf.position_id
AND hapf.effective_end_date = hr_general.end_of_time
AND hou.organization_id = hapf.organization_id
AND pg.grade_id = hapf.entry_grade_id
AND EXISTS (
SELECT 'X'
FROM hr_all_positions_f hapf1
WHERE hapf1.position_id = hapf.position_id
AND hapf1.availability_status_id = 1
AND (pbv.date_from BETWEEN hapf1.effective_Start_date AND hapf1.effective_end_date
                    OR
               hapf1.effective_Start_date BETWEEN pbv.date_from AND pbv.date_to))
and :gl_organization = 10)
## Detail 0 ##
java.sql.SQLException: ORA-01008: not all variables bound
Thank you very much

Is it a seeded view or a custom view? Ideally, in OAF you do parameter binding in the style
organization_id = :1
Also make sure to call setWhereClauseParams(null) on your view object before going for binding.
--Shiv

ADF -how to create table binding when view object is no known until runtime

I want to programmatically create a table binding to a view object where the view object name is not known until run-time. Then I will use a dynamic table to display it. Can anyone provide an example?

I looked at example #9. It gets me closer to what I am looking for but not quite enough. In my case, I don't have (or want in this case) a pageDefinition with a pre-declared Iterator binding. I am converting an exsisting BC4J/Struts/JSP application. I would like to rewrite my reusable component tags to make use of ADF bindings and Faces. My tags are passed the ApplicationModule and ViewObject names as parameters, much like the old BC4J datatags. I do not want to go back and rewrite all of my pages from scratch using drag-and-drop declarative bindings with a pageDefinition for every page. I am hoping to have my rewritten tags handle everything programmatically based only on the ViewObject name passed at run-time.

How To Delete a row from view object

Hi
I have a table whose data is populated based on the view object... and for each row i have a delete icon...
when i press on this delete icon i want to delete that particular row from the view object only..but not from the data
base..please help me in this issue
Thanks

Hi,
as per krishna priya says u can delete .
-----1st one thing let me know vo is eo based .???.
If not here is the sample code to delete a row not from the data base.:
public void Deleterow(OAPageContext pageContext, OAWebBean webBean,String prjid)
int idtodelete;
int fetchedrowcount;
Number prjojectid;
RowSetIterator deleteIter;
prjidtodelete=Integer.parseInt(prjid);
OADBTransaction tr = getOADBTransaction();
ProjectsVORowImpl row=null;
ProjectsVOImpl vo= getProjectsVO1();
fetchedrowcount=vo.getRowCount();
deleteIter = vo.createRowSetIterator("deleteIter");
deleteIter.setRangeStart(0);
deleteIter.setRangeSize(fetchedrowcount);
for(int i=0;i<fetchedrowcount;i++)
row= (ProjectsVORowImpl)deleteIter.getRowAtRangeIndex(i);
prjojectid=(Number)row.getAttribute("ProjectId");
if (prjojectid.compareTo(prjidtodelete)==0)
row.remove();
break;
deleteIter.closeRowSetIterator();
Regards
Meher Irk
Edited by: Meher Irk on Nov 2, 2010 12:42 AM

How to use SPEL for Dynamic View Objects?

Hi Gurus,
In Benefits Self Service particularly in the Designate Beneficiaries page, we have a requirement to set the row for Self designation as Read Only. What this means for any plan that you're eligible and that requires beneficiary designation, you are not allowed to designate yourself. Unfortunately this is an intended functionality and the only way to achieve our requirement is thru Personalization. I was able to accomplish this successfuly thru the SPEL functionality. However the view object corresponding to each plan that requires beneficiary designation is somewhat dynamic. For example, Plan A corresponds to BeneficiaryPeopleVO1, Plan B corresponds to BeneficiaryPeopleVO2, Plan C corresponds to BeneficiaryPeopleVO3, etc. The Personalization Page only allows me to use the SPEL for only one view object at a time. So if an employee is eligible for 3 plans that require beneficiary designation and my SPEL points to BeneficiaryPeopleVO1, it will only set the Read Only in Plan A. Plan B and Plan C would still allow self designation. Is there a way I could use the SPEL to work for all View Objects?
Thanks,
Ronaldo

jeanluca wrote:
I've seen things like this in scripting languages, so I was wondering if things like this are possible in java. Here is an not working example:
Is something like this possible ?AFAIK, it is only possible in a very limited way as noted above and is nearly always not recommended and definitely not necessary. The variable name has little importance, but OTOH the object reference has great importance. Instead learn about arrays, Lists, and Maps.

How to set query for child View Object?

I have a hGrid in standard page. Two View Objects are present connected using view link. I need to set where clause in the child View Object. The changes are not getting reflected when i set the where clause. Also when i try to fetch rowCount it returns 0 for child View Object. But i am able to get the value for parent View Object. Any suggestions please.

Hi,
This solution worked for me last time, Please create One blank row and delete that row(For Child VO).
Why we are doing this? : Because the child vo pointer might not init. See this is not our fault, this is because of OA Framework. But this works for me :)
Thanks,
Shrikant

How to construct a new complete view object programmatically

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