View Object Transient attribute, refresh problem.

I have a VO which contains 3 entities joined. I added it a transient attribute with Groovy expression. My expression is : ReplyView.count("ReplyId"); , it counts two VO relationship. it counts normally but, when i insert a new reply, it doesnt refresh/update/recalculate the value. Whats the problem?

The dependency values referred to are accessed when you edit the transient attribute in the view object. On the left hand panel select dependencies and shuttle the columns that the transient is dependent on. I don't think this matters for non-entity based views since the SQL is fixed but for entity based views this assures the dependent columns are added to the query even if they are not needed by the page.
http://docs.oracle.com/cd/E21764_01/web.1111/b31974/bcentities.htm#ADFFD20177

Similar Messages

View Object transient attribute (Calculate sum) using groovy problem

Hi
I have a read only view object named "ConnectionVVO". And it has database field name "points"(type is number).
Now I need to take the sum of points.
For this I did the following.
Self view object added to the same view object as a view accessor named "ConnectionVVO1".
Created a transient attribute named "TotalPoints".
Added following groovy as the value expression of the above transient attribute.
adf.object.ConnectionVVO1.getRowSet().sum("points")after that when I run the application module and run the view object it was extremely slow. Actually nothing was appeared. There after I modified the sql statement and added a where clouse to select few rows.
Then it was appeared without slowness.
The table has around 11 million records.
Could you please provide a hint or any alternate way for doing this(getting the sum of points).
Please help.
Edited by: deshan on Mar 9, 2011 2:56 PM

Hi Timo,
Thank you very much for the explanation and direction. I will do that way. I have found that implementing view object and view row class I could do the similar kind of thing for the transient attribute.
public Number getTotalPoints() {
RowIterator con= getConnectionViewImpl();
   Number sum = new Number(0);
   while (con.hasNext()) {
      sum = sum.add( (Number)con.next().getAttribute("Points"));
    }    return sum;
} took form
http://technology.amis.nl/blog/1295/creating-a-dynamic-ajax-column-footer-summary-in-a-table-component-using-adf-faces
But it also slow as 1 st method
I am wonder whether both ways behave as similarly or they are totally different implementation?

View Object transient attributes with SQL default value

Dear All
I am working on JDeveloper 12.1.2
In my scenario i have application module A in my main application. I created another data model with Application module B. I imported AM B into my main project.
The problem is that when i have a transient attribute based on SQL statment in AM B, it gives me error in runtime on the interface but when i run the application module it works fine ... i do not know why
Regards

Hi,
what sqlstatement you worte? what error?
thanks

Sort LOV view with transient attribute

Hello,
I am using JDeveloper 12c.
I have a view object with a list of value. Let's say EmployeeView and EmployeeStatusLovView.
I have a transient attribute on my list of values. Let's say statusDescription.
I want to sort my list of value with the transient attribute. How can I do that ?
I saw that I can easy sort with non transient attribute.
If it wasn't a LOV, I could override the executeQuery and call setSortBy(), but with a LOV it doesn't work as the executeQuery isn't called.
Any ideas?
Thanks,
Cindy

Ok I get it. The problem was that I tried to override the executeQuery() instead of executeQueryForCollection(). With LOV the first one is not used. Calling setSortBy("myTransientAttribute") in executeQueryForCollection() works just fine!

Jdev 1013 ADF - View Object not bound - Refreshed page not showing ctrls

I have a view object that i am using for input form on a page by exposing in a data control.
When the form is submitted it does some db operation based on user input and comes back.
My problem is when i enter the same page again for doing another operation of the same kind,
i refresh this view object in one of the application module's methods.
When the page shows up eventually, i am not finding the input fields on them.
I guess there is some sort of binding issue to the view object here.
The code in the application module's method to refresh the view module is as simple as:
getVParams().clearCache();
VParamsRowImpl row =
(VParamsRowImpl )getVParams().createRow();
row.setValue(100);
getVParams().insertRow(row);
Any idea why the bindings is not picking up the new row and connecting it to the form?
By the way i am calling the same method when displaying the form for the first time it works. Only
the subsequent calls to the form messes up.
Any help will be much appreciated.

Yes i am calling my custom method in application module. I understood that the same page bindings get invoked in two parts, once when the page is loaded and once when the values are submitted by the user. When the bindings are executed when the user is submitting the data from the page adfFacesContext.postback is true and at that i am not interested in creating the new row again by calling my method. Hence this condition in invokeAction. When i debug, the methods are getting called properly. Only when the page is rendered again, it is not picking up the new row.
I am working around this now, by creating the row only once from the appmodule's method and then reusing the same created row in subsequent loadings by resetting the attributes alone.

View Object transient query object question

One of the view object attribute is based upon a sql query as follows:
Select count(*) from TABLE where TABLE.customer_id=<The customerId in each column returned>
How do I configure this transient attribute?
Thanks.

Not sure what the exact requirement of this functionality is, but you can also get the size of the result by coding up something similar to the following:
Build a generic read only vo with the sql like:
select * from Employee
Now use either ViewCriteria based search, bind variable or findByKey() method to filter for targeted match. for example using the programmatic bind variable method:
ViewObject employeeVo= findViewObject("EmployeeVo");
employeeVo.setWhereClause("ID=:id");
employeeVo.defineNamedWhereClauseParam("id", null, null);
employeeVo.setNamedWhereClauseParam("id", someid);
employeeVo.executeQuery();
long numberOfMatches = employeeVo.getEstimatedRowCount();
Hope that helps.
-Z

View Object New Attribute Setting Expression

I am trying to create a new attribute in a View Object. I wish to have the attribute contain some strings and fields (like dashes between other fields).
Simple concatenation works fine:
YEAR||SEQ||TYPE -- this works!
When I try to add the dash using the wizard like this:
YEAR||'-'||SEQ
I get an error in the SQL query and the following appears in the view.xml file:
YEAR||#39;-#39;||SEQ -- left out & so the #39 would post
I am considering creating an new table in Oracle, but this would be easier if it is possible.
I am using JDeveloper 9.0.3 and Oracle 9iAS on Windows 2000.
I have tried several ways to get the dash in the new attribute like "-", but the wizard will not cooperate and editing the file directly didn't work either.
Any ideas would be appreciated.

Hi Timo,
Thank you very much for the explanation and direction. I will do that way. I have found that implementing view object and view row class I could do the similar kind of thing for the transient attribute.
public Number getTotalPoints() {
RowIterator con= getConnectionViewImpl();
   Number sum = new Number(0);
   while (con.hasNext()) {
      sum = sum.add( (Number)con.next().getAttribute("Points"));
    }    return sum;
} took form
http://technology.amis.nl/blog/1295/creating-a-dynamic-ajax-column-footer-summary-in-a-table-component-using-adf-faces
But it also slow as 1 st method
I am wonder whether both ways behave as similarly or they are totally different implementation?

Getting a View Object Total Attributes

Hi, Is there any way to retrieve the Attribute count (DataBase Columns) of a View Object in its own java implementation?
I'm using this:
JDev 11.1.1.6
System.out.println("this.getEntityDef(0).getAttributeCount() " + this.getEntityDef(0).getAttributeCount());
System.out.println("Column count1 " + this.getAttributeCount());
System.out.println("Column count2 " + this.getAttributeDefs().length);
System.out.println("Column count3 " + this.getProperties().size());
but none of them works the best way:
the first one gives me 6 more than the actual columns that excist in the entity object
the second and third are gives me more than the attributes of that object
the forth gives me 200 and more
which way gives me the count of the database table columns, and how can I access it in by index?
thanks

- Here is modified code, which prints attribute name along with database column name the attribute represents:
public int getCountOfPersistentAttrs() {
        int result = 0;
        for (AttributeDef attr : getAttributeDefs()) {
            if (attr.getAttributeKind() == AttributeDef.ATTR_PERSISTENT) {
                 System.out.println("Name of persistent attribute : " + attr.getName());
                 System.out.println("Name of the database column the attribute represents : " + attr.getColumnName());
                 result++;
        return result;
    }

ViewObject Transient Attribute Refresh...

Hi All,
I and using JDeveloper 11.1.1.6.0
I have a transient attribute that gives me the total cost of orders whose boolean attribute is true.
The transient attribute works fine, but at runtime when the boolean is changed to false the attribute does not refresh. I've tried setting partial refresh and that still does not work. the updated value of the total cost is only displayed when a new session is created.
How do I get this transient attribute to update as im changing the boolean checkbox value e.g true to false and the other way around.?
Thanks.

What is a "new session"?
I think there is no enough information to help you.
Where are you doing the calculations? On the transient attribute settings or in a Managed Bean?
If you have calculations on the trasient attr then "Always" the calculations will be done after you filled the fields values and your boolean attr will be ignored.
Jhon

How to apply validation rule for View Object (VO) attributes?

How to add Validation Rules to VO attributes, just like EO Business Rules?
I got 2 problem with that:
1. VO can join multiple tables, and the attribute's validation rules may reference to the fields from multiple entities.
2. Since the EO Validation Rules only execute before the data actually write to entity (Commit operation). But user may need to input data from multiple pages with only 1 commit.
I am using JDeveloper 11g with ADF BC.
Regards,
Samson Fu

Just something to point out, the EO validation doesn't fire on a commit (if you mean commit as in the database/AppModule commit). You can also access VO information from the EO validation rules by using view accessors.
Regards
Grant

JDeveloper 12.c - Entity Object Transient Attribute Behavior

Hi
Just wondering if the following behaviour is the expected one for a new attribute in an Entity Object;
The only way to be allowed to write an expression as default value is if the attribute itself is persistent. If transient is selected, the only available option for default value is SQL. So I need to put as persistent momentarily while writing my expression and then change it to transient.
Regards

Hi,
no, this is not intended. If you have a support contract or internal access to the bug database, please file a bug
Frank

How to save transient attributes?

Hi,
I have a query related to saving the View Object transient attributes :-
Following is the scenario which we want to implement:-
1. We have a page on which we are using a table component with 5-6 VO transient attributes and n number of rows.
2. There is a save button on the page which allows user to save the activity which he is performing and able to resume the activity later on.
3. As soon as he click on the save button, all the EO attributes get persisted.
4. When he re-opens a flows, he can see a resume button which allows him to resume the activity from the point he left.
5. So User should be able to see the changed he made on the table component on clicking the resume button which he made before saving the activity.
Now, the question is how we can retrieve the transient attributes on resuming the activity or is there any way by which we can save the transient attributes of View object ?
Please help !!

Refer
ADF Practice: Passivation and Activation of View Objects with Transient Attributes

How to retrieve the values from a Transient View Object

Hi Experts,
I am using Jdevelpoer11.1.1.5.0. I created one Transient view object with attributes EmpId,Salary.
In Backing Bean i will create rows for that view object and display it in the form of <af:Table> like Empid, Salary and an Update Link.
Now my problem is i want to update the salary of the particular EmpId. For Example if the EmpId is 100 and salary is 10000 now i want to increase the salary to 20000 and if i click on the update button; i want to retrieve the particular employee details in my backing bean. How can i acheive this?
Thanks in advance.

A better approach would be to programmatically populate rows in the <VO>Impl.java by overriding the executeQueryForCollection(0 as specified here -
http://adfpractice-fedor.blogspot.in/2011/01/adf-bc-programmatically-populated-vo.html
You can write the logic to update the salary in an AM method then on click of Update or in the getter of Salry field if logic is valid for all fields...

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

Problem occured when create a tree table for master-detail view objects using SQL queries?

I am programming a tree table for master-detail view objects using SQL queries and these 2 view objects are not simple singel tables queries, and 2 complex SQL are prepared for master and view objects. see below:
1. Master View object (key attribute is SourceBlock and some varaible bindings are used for this view object.)
SELECT cntr_list.SOURCE_BLOCK,
        sum(
         case when cntr_list.cntr_size_q = '20'
              then cntr_list.cntr_qty
              else 0 end ) as cntr20 ,
        sum(
         case when cntr_list.cntr_size_q = '40'
              then cntr_list.cntr_qty
              else 0 end ) as cntr40 ,
         sum(
         case when cntr_list.cntr_size_q = '45'
              then cntr_list.cntr_qty
              else 0 end ) as cntr45
FROM (
    SELECT yb1.BLOCK_M as SOURCE_BLOCK,
           scn.CNTR_SIZE_Q,
           count(scn.CNTR_SIZE_Q) AS cntr_qty
    FROM SHIFT_CMR scm, SHIFT_CNTR scn, YARD_BLOCK yb1, YARD_BLOCK yb2
    WHERE
    scm.cmr_n = scn.cmr_n
    AND (scm.plan_start_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS')
    OR scm.plan_end_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS'))
    AND scm.shift_mode_c = :ShiftModeCode
    AND scm.end_terminal_c = :TerminalCode
    AND scm.start_terminal_c = yb1.terminal_c
    AND scm.start_block_n = yb1.block_n
    AND substr(scn.start_location_c,(instr(scn.start_location_c,',',1,5)+1),instr(scn.start_location_c,',',1,6)-(instr(scn.start_location_c,',',1,5)+1)) BETWEEN yb1.slot_from_n AND yb1.slot_to_n
    AND scm.end_terminal_c = yb2.terminal_c
    AND scm.end_block_n = yb2.block_n
    AND substr(scn.end_location_c,(instr(scn.end_location_c,',',1,5)+1),instr(scn.end_location_c,',',1,6)-(instr(scn.end_location_c,',',1,5)+1)) BETWEEN yb2.slot_from_n AND yb2.slot_to_n
    AND scn.status_c not in (1, 11)
    AND scn.shift_type_c = 'V'
    AND scn.source_c = 'S'
    GROUP BY yb1.BLOCK_M, scn.CNTR_SIZE_Q
) cntr_list
GROUP BY cntr_list.SOURCE_BLOCK
2. Detail View object (key attributes are SourceBlock and EndBlock and same varaible bindings are used for this view object.)
SELECT cntr_list.SOURCE_BLOCK, cntr_list.END_BLOCK,
        sum(
         case when cntr_list.cntr_size_q = '20'
              then cntr_list.cntr_qty
              else 0 end ) as cntr20 ,
        sum(
         case when cntr_list.cntr_size_q = '40'
              then cntr_list.cntr_qty
              else 0 end ) as cntr40 ,
         sum(
         case when cntr_list.cntr_size_q = '45'
              then cntr_list.cntr_qty
              else 0 end ) as cntr45
FROM (
    SELECT yb1.BLOCK_M as SOURCE_BLOCK,
           yb2.BLOCK_M as END_BLOCK,
           scn.CNTR_SIZE_Q,
           count(scn.CNTR_SIZE_Q) AS cntr_qty
    FROM SHIFT_CMR scm, SHIFT_CNTR scn, YARD_BLOCK yb1, YARD_BLOCK yb2
    WHERE
    scm.cmr_n = scn.cmr_n
    AND (scm.plan_start_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS')
    OR scm.plan_end_dt BETWEEN to_date(:DateFrom,'YYYY/MM/DD HH24:MI:SS') AND to_date(:DateTo,'YYYY/MM/DD HH24:MI:SS'))
    AND scm.shift_mode_c = :ShiftModeCode
    AND scm.end_terminal_c = :TerminalCode
    AND scm.start_terminal_c = yb1.terminal_c
    AND scm.start_block_n = yb1.block_n
    AND substr(scn.start_location_c,(instr(scn.start_location_c,',',1,5)+1),instr(scn.start_location_c,',',1,6)-(instr(scn.start_location_c,',',1,5)+1)) BETWEEN yb1.slot_from_n AND yb1.slot_to_n
    AND scm.end_terminal_c = yb2.terminal_c
    AND scm.end_block_n = yb2.block_n
    AND substr(scn.end_location_c,(instr(scn.end_location_c,',',1,5)+1),instr(scn.end_location_c,',',1,6)-(instr(scn.end_location_c,',',1,5)+1)) BETWEEN yb2.slot_from_n AND yb2.slot_to_n
    AND scn.status_c not in (1, 11)
    AND scn.shift_type_c = 'V'
    AND scn.source_c = 'S'
    GROUP BY yb1.BLOCK_M, yb2.BLOCK_M, scn.CNTR_SIZE_Q
) cntr_list
GROUP BY cntr_list.SOURCE_BLOCK, cntr_list.END_BLOCK
3. I create a view link to create master-detail relationship for these 2 view objects.
masterview.SourceBlock (1)->detailview.SourceBlock (*).
4. I create a tree table using these 2 view objects with master-detail relationship.
When I set default value for variable bindings of these 2 view objects and the matching records exist, tree table can work well. I can expand the master row to display detail row in UI.
But I need to pass in dymamic parameter value for variable bindings of these 2 view objects, tree table cannnot work again. when I expand the master row and no detail row are displayed in UI.
I am sure that I pass in correct parameter value for master/detail view objects and matching records exist.
Managed Bean:
        DCIteratorBinding dc = (DCIteratorBinding)evaluteEL("#{bindings.MasterView1Iterator}");
        ViewObject vo = dc.getViewObject();
        System.out.println("Before MasterView1Iterator vo.getEstimatedRowCount()="+ vo.getEstimatedRowCount());
        System.out.println("Before MasterView1Iterator ShiftModeCode="+ vo.ensureVariableManager().getVariableValue("ShiftModeCode"));
        vo.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
        vo.ensureVariableManager().setVariableValue("DateTo", dateTo);
        vo.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
        vo.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
        vo.executeQuery();
        System.out.println("MasterView1Iterator vo.getEstimatedRowCount()="+ vo.getEstimatedRowCount());
        DCIteratorBinding dc1 = (DCIteratorBinding)evaluteEL("#{bindings.DetailView1Iterator}");
        ViewObject vo1 = dc1.getViewObject();
        System.out.println("Before DetailView1Iterator vo1.getEstimatedRowCount()="+ vo1.getEstimatedRowCount());
        System.out.println("Before DetailView1Iterator ShiftModeCode="+ vo1.ensureVariableManager().getVariableValue("ShiftModeCode"));
        vo1.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
        vo1.ensureVariableManager().setVariableValue("DateTo", dateTo);
        vo1.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
        vo1.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
        vo1.executeQuery();
        System.out.println("after DetailView1Iterator vo1.getEstimatedRowCount()="+ vo1.getEstimatedRowCount());
5. What's wrong in my implementation? I don't have no problem to implement such a tree table if using simple master-detail tables view object, but now I have to use such 2 view objects using complex SQL for my requirement and variable bindings are necessary for detail view object although I also think a bit strange by myself.

Hi Frank,
Thank you and it can work.
public void setLowHighSalaryRangeForDetailEmployeesAccessorViewObject(Number lowSalary,
                                                                          Number highSalary) {
        Row r = getCurrentRow();
        if (r != null) {
            RowSet rs = (RowSet)r.getAttribute("EmpView");
            if (rs != null) {
                ViewObject accessorVO = rs.getViewObject();
                accessorVO.setNamedWhereClauseParam("LowSalary", lowSalary);
                accessorVO.setNamedWhereClauseParam("HighSalary", highSalary);
            executeQuery();
but I have a quesiton in this way. in code snippet, it is first getting current row of current master VO to determine if update variables value of detail VO. in my case, current row is possibly null after executeQuery() of master VO and I have to change current row manually like below.
any idea?
            DCIteratorBinding dc = (DCIteratorBinding)ADFUtil.evaluateEL("#{bindings.SSForecastSourceBlockView1Iterator}");
            ViewObject vo = dc.getViewObject();
            vo.ensureVariableManager().setVariableValue("DateFrom", dateFrom);
            vo.ensureVariableManager().setVariableValue("DateTo", dateTo);
            vo.ensureVariableManager().setVariableValue("ShiftModeCode", shiftModeC);
            vo.ensureVariableManager().setVariableValue("TerminalCode", terminalCode);
            vo.executeQuery();
            vo.setCurrentRowAtRangeIndex(0);
            ((SSForecastSourceBlockViewImpl)vo).synchornizeAccessorVOVariableValues();

View Object Transient attribute, refresh problem.

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