View link concept in oaf

dear all
what is view link concept in OAF
Regards
Sreekanth

Hi,
View Links are basically used to query the child records automatically based on selection from the Master VO.
Please go through the devguide for more details.
Thanks,
Gaurav

Similar Messages

How to pass parameter when create view link

Hi,
I used R12 to implement OAF. I create a VO with paramenter such as SELECT item_code,parent_item_code,month_budget_id
FROM cux_ce_month_budget_lines_t
where month_budget_id=:1
But when I create VL for this VO. It seems the parameter :1 can not be passed.
Could some one to help lookinto this?
Best Regards,
Eileen

You donot need to pass parameter while creating the View Link. Once the view link is created then you assign the bind parameter to the master VO and execute the View link. The Child VO would automatically be executed.

How to create view link?

Hi,
Would somebody please tell me the brief steps for creating a view link.

OAF ... Oracle Applications Framework? As in 'a technology or product question'? (See the description of this forum for reference to why I ask.)
Please note that Oracle has over 100 products and technologies. When asking questions about the product or technology, it is important to either ask in context (the correct forum) or make sure you give lots of detail to alloow the readers to actually be able to identify the product and the platform.

How to outer join within a view link from (VO-VL-VO)

I've got a table that stores the values of pre-defined attributes.
I'd like to create an advancedTable region that shows all of the attributes with or without values, in my view object i have....
select attribute, value
from attributes, values
where attributes.attribute_id = values.attribute_id (+)
This is working, but a have another view object that is the master and this is the details.
How can I do an outer join on the view link from master to detail? A simple (+) in the where condition does not do the trick.
If I try anything fancy within the view link, I get a JBO-27122.
Thank you,
Jerry.

Understand the concept of VL. Vl is nothing but a link between two VOs, with one VO row column serve as binding column for another VO.If u understand this u go to VL wizard and make VL declaratively. If not, refer to dev guide to know about VL.
--Mukul

[ADF-11.1.2] Dynamic EO/VO/Association/View Link/pagedef/JSPX XML Def files

I though I found gold but it has nothing when I clicked on it.
Steve Muench's "Not Yet Documented Examples" [http://blogs.oracle.com/smuenchadf/resource/examples] > "Using ViewObject writeXML and JSTL XML Tag Library" suppose to provide the example. but I am getting File not found error. Seems the sample application doesn't exists any more.
Please point me to correct example for my following use case:
At Run-time:
1. My Application will ask user for database table name.
2. for provided database table name, my application should Generate XML Definition file for EO, Associations, VO and View Links inside Model Project (basically all definition file should be created which gets created when developer create these Business Components for database table through JDeveloper Studio).
3. Once done, application should also generate JSPX file using ADF page template in ViewController Project, with binding definition to it's corresponding newly generated VO Objects from step 2.
4. The page will be then, visible to user to use it (create/update/delete records)
First of all, is it possible to achieve above requirement ? Based on description of Steve Muench's "Using ViewObject writeXML and JSTL XML Tag Library", I think it is possible, but I don't have the sample application to refer.
I could have used dynamic view object concept to display the records with basic page layout. But I want users the ability to modify the create/records/delete the records with following requirements:
1. If require, Business Logic Developer can use Jdeveloper Studio to access new generated Business Components and modify it (like adding some validation rules)
2. If require, UI Developer can access newly generated JSPX file and change the layout.
Please let me know how much and how can I achieve it ?

Shay,
Thank you for your reply. I will take a look at your links.
Use Case:
Application will have different BC for different IT Assets (like Monitor, Keyboard, Servers etc), which will basically hold records for all available Assets (like Display Resolution, screen size etc for all monitor in Monitor BC).
I want to give user; the ability to create, for e.g., the sub-class of Monitor to store more specific attribute-values in different table (which will be linked Parent BC). For e.g.: They may want to care about holding CRT and LCD Monitor records in separate new database table -- Application will ask user what all attributes/Columns they want to see for LCD which is specific to this type AND which is not present in already existing out-of-box Monitor BC/Table - e.g. - "Viewing Angle" Attribute).
With that said, I can write code to create database table on fly (having 1-to-1 foreign key reference to parent table) but writing ADF part seems difficult. I also wanted application to automatically generate new page for newly added VO BC. E.g.: LCD-Monitor.JSPX inheriting all attributes from monitor (parent VO) in the same structure as Monitor.JSPX file is having with extra LCD-specific Attributes in separate panel tab (which again UI developers can customized it).
Too much to expect huh !
I am going to start building the application so If not above way, any other suggestion to achieve the requirement ?
Edited by: Anandsagar Sah on Aug 29, 2011 9:23 PM

DetailVO via View Link Results in "No Results Found"

I have a MasterVO with two detail VO's; Detail1VO and Detail2VO. A page contains an advanced table region bound to the MasterVO with a detail region bound to Detail1VO and another advanced table region as a sibling of the MasterVO advanced table region bound to the Detail2VO. The data is displayed as expected for the MasterVO and Detail1VO but the region bound to Detail2VO displayes "No results found".
The AM tester form shows that all of the relationships work as expected. So I see the Detail2VO data as it relates to the MasterVO data. It's just in the page where the Detail2VO data is not displayed.
Does anyone know why the Detail2VO would not display the associated MasterVO data? It seems to me it may have something to do with the page components since it works as expected in the AM test form. Does a detail bound advanced table region always need to be placed in an advanced table's detail region?
Thank you

Thank you for your response to my request for help. However, I'm not sure I understand your directions. Are you saying that for the second detail VO table region I should set the properties for Detail View Attribute and View Link Instance? Or are you saying that I need to ensure that these properties are set on the master table region which is where they are presently both set. But both of my detail VO table regions only have their View Link Instance property set and do not have their Detail View Attribute property set while the Master VO table does have its Detail View Attribute property set. But the Master VO can only have one detail table.
What I have done so far to provide both sets of detail records tied to the master is to create a new region for the second detail table that is outside of the master table's advanced table bean. Since OAF is not providing the records in the detail table that is defined outside of the master VO advanced table I have manually defined the logic to query the second detail VO in the page's controller.
Here is the page layout. Hopefully the formatting remains.
PageLayoutRN
|
|--MainRN
      |
      |--MasterVO advanced table
      |
      |--advanced table components
          |
          |--detail
              |
              |--Details1RN
                  |
                  |--Detail1VO advanced table
         |
         |--tableSelection
             |
             |--selectMaster
      |
      |--Detail2RN
          |
          |--Detail2VO advanced table
Thank you

View links in oracle ADF/query featching from Database

Please any one help for this query
I have two tables Emp, Dept
I have query like this select * from Emp e, Dept d where e.deptno=d.deptno
Query is fetching like this
Empno Ename job Salary Comm deptno deptno dname      Loc
15 i1     support     50000     11     5     5     IT          sss
15 i1     support     50000     11     3     3     Account     sss
16 i2     support     8000     10     5     5     IT          sss
16 i2     support     8000     10     3     3     Account     sss
16 i2     support     8000     10     3     3     Software      sss
16 i2     support     8000     10     4     4     Operation      sss
Query is fetching 6 rows.
but my requirement is what ever records fetching from database with same employee number is one record that is same employee number dept names grouped I will show it as one record how to fetch records from data base.
Here is the example (My Requirement):
This is first row:
Empno Ename job Salary Comm
15 i1     support 50000     11
Deptno dname      Loc
5     IT          sss
3     Account     sss
This is second row:
Empno ename job Salary Comm
16 i2     support     8000     10
Deptno dname      Loc
5     IT     sss
3     Account     sss
2     Software sss
4     Operation sss
i am useing oracle ADF if any possibility in view links either i get from the query as i mentioned.
plz any one can help
thanks

Please any one help for this query
I have two tables Emp, Dept
I have query like this select * from Emp e, Dept d where e.deptno=d.deptno
Query is fetching like this
Empno Ename job Salary Comm deptno deptno dname      Loc
15 i1     support     50000     11     5     5     IT          sss
15 i1     support     50000     11     3     3     Account     sss
16 i2     support     8000     10     5     5     IT          sss
16 i2     support     8000     10     3     3     Account     sss
16 i2     support     8000     10     3     3     Software      sss
16 i2     support     8000     10     4     4     Operation      sss
Query is fetching 6 rows.
but my requirement is what ever records fetching from database with same employee number is one record that is same employee number dept names grouped I will show it as one record how to fetch records from data base.
Here is the example (My Requirement):
This is first row:
Empno Ename job Salary Comm
15 i1     support 50000     11
Deptno dname      Loc
5     IT          sss
3     Account     sss
This is second row:
Empno ename job Salary Comm
16 i2     support     8000     10
Deptno dname      Loc
5     IT     sss
3     Account     sss
2     Software sss
4     Operation sss
i am useing oracle ADF if any possibility in view links either i get from the query as i mentioned.
plz any one can help
thanks

View Link between two query views

Hi is it possible to create a view link between two views having the where clause bind variables.
How you set the bind variables at the run time for the View objects. It is giving hard time for me to use the Master view in the XmlData bean to generate the Xml document.
I am able to set the Master views bind variables, but for view link destination view
where clause bind variables are not able to set ( link object link condition bind variables are binded run time but the views where chause bind variables of destination view are unable to setand bind)
Thanks
null

Easiest way to do this is to add additional transient attributes to your master view object, and then include those additional transient attributes in the list of source attributes for your view link. This way, you can get BC4J to automatically refer to their values with no additional code on your part.

[SOLVED] Multiple Dynamic View Objects and View Links - ADF Tree Table

Hi all,
I've got a method that creates 3 dynamic viewobjects using this:
            ViewDefImpl Level1ViewDef = new ViewDefImpl("Level1View");
            Level1ViewDef.addViewAttribute("LevelDescription","LEVEL1_DESCRIPTION",String.class);
            Level1ViewDef.addViewAttribute("SetOfBooksId","SET_OF_BOOKS_ID",Number.class);
            Level1ViewDef.addViewAttribute("CodeCombinationId","CODE_COMBINATION_ID",Number.class);
            Level1ViewDef.addViewAttribute("Level1","LEVEL1",String.class);
            Level1ViewDef.addViewAttribute("AccountType","ACCOUNT_TYPE",String.class);
            Level1ViewDef.addViewAttribute("PeriodYear","PERIOD_YEAR",Number.class);
            Level1ViewDef.addViewAttribute("PeriodNum","PERIOD_NUM",Number.class);
            Level1ViewDef.addViewAttribute("PeriodName","PERIOD_NAME",String.class);
            Level1ViewDef.addViewAttribute("PtdActual","PTD_ACTUAL",Number.class);
            Level1ViewDef.addViewAttribute("YtdActual","YTD_ACTUAL",Number.class);
            Level1ViewDef.addViewAttribute("LtdActual","LTD_ACTUAL",Number.class);
            Level1ViewDef.addViewAttribute("BudgetName","BUDGET_NAME",String.class);
            Level1ViewDef.addViewAttribute("BudgetVersionId","BUDGET_VERSION_ID",Number.class);
            Level1ViewDef.addViewAttribute("PtdBudget","PTD_BUDGET",Number.class);
            Level1ViewDef.addViewAttribute("YtdBudget","YTD_BUDGET",Number.class);
            Level1ViewDef.addViewAttribute("LtdBudget","LTD_BUDGET",Number.class);
            Level1ViewDef.addViewAttribute("EncumbranceType","ENCUMBRANCE_TYPE",String.class);
            Level1ViewDef.addViewAttribute("EncumbranceTypeId","ENCUMBRANCE_TYPE_ID",Number.class);
            Level1ViewDef.addViewAttribute("PtdCommitment","PTD_COMMITMENT",Number.class);
            Level1ViewDef.addViewAttribute("YtdCommitment","YTD_COMMITMENT",Number.class);
            Level1ViewDef.addViewAttribute("LtdCommitment","LTD_COMMITMENT",Number.class);
            Level1ViewDef.setQuery(sql_level1);
            Level1ViewDef.setFullSql(true);
            Level1ViewDef.setBindingStyle(SQLBuilder.BINDING_STYLE_ORACLE_NAME);
            Level1ViewDef.resolveDefObject();
            Level1ViewDef.registerDefObject();
            ViewObject vo1 = createViewObject("Level1View",Level1ViewDef);I can create the view objects fine and create a single viewlink between two of them, however i'm getting problems with 2 view links.
This is how I'm creating a view link:
            ViewLink Level2Level1FKLink = createViewLinkBetweenViewObjects("Level2Level1FKLink1",
                                                    "Level2View",
                                                    vo1,
                                                    new AttributeDef[]{
                                                      vo1.findAttributeDef("Level1")
                                                    vo2,
                                                    new AttributeDef[]{
                                                      vo2.findAttributeDef("Level1")
                                                    "LEVEL1 = :Bind_Level1");
            ViewLink Level3Level2FKLink = createViewLinkBetweenViewObjects("Level3Level2FKLink1",
                                                    "Level3View",
                                                    vo2,
                                                    new AttributeDef[]{
                                                      vo2.findAttributeDef("Level2")
                                                    vo3,
                                                    new AttributeDef[]{
                                                      vo3.findAttributeDef("Level2")
                                                    "LEVEL2 = :Bind_Level2");I can get the data to display on an adf tree table if i'm only using a single view link, but when i try and implement 2 view link (for 3 levels on the adf tree table) i'm getting problems displaying the data.
I'm getting the following error:
Aug 10, 2007 2:44:39 PM oracle.adfinternal.view.faces.renderkit.core.xhtml.PanelPartialRootRenderer encodeAll
SEVERE: Error during partial-page rendering
oracle.jbo.NoDefException: JBO-25058: Definition Level3View of type Attribute not found in Level2View_Level2Level1FKLink1_Level2ViewThe thing is, Level3View isn't in the Level2Level1FKLink viewlink.
I've been reading about something similar here
BC4J Master-Detail-Detail
but I am still unsure of what the problem is.
Thanks in advance.

I found the answer here:
http://radio.weblogs.com/0118231/stories/2004/06/10/correctlyImplementingMultilevelDynamicMasterDetail.html

View objects, view links, does not search properly

Hi,
I am using Jdev 11.1.2.0
I have created a search criteria based on view objects and view links. It has entities and entity associations as base. The structure is as follow:
vo1 ->vl (1 to 1) - > vo2
->vl ( 1 to many) -> vo3
Any search attribute which is not from vo1 return bad result. It happens in running app module and in the jspx page. In app module, it sometimes complains about populating the wrong attribute for the named criteria.
The search criteria is using "exists" statement for vo2 and vo3 for adding the conditions. It has many attributes within the exist statement.
So what is the problem. Why it does not join properly? Why does it return bad result when search attribute is from vo2 and vo3? Please help.
Any more information requires to solve the problem?
Thanks,
Arthur

Hi,
Two more information: vo1 is composed of Entity1 (1..M) Entity2 and Entity1 (1..1) Entity 3. vo2 is composed of Entity 2 and vo3 is composed of Entity 4.
I follow the information from http://download.oracle.com/docs/cd/E16162_01/web.1112/e16182/bcquerying.htm#BCGIFHHF
to create the search criteria.
Arthur

EJB Finder View Links and CMR

Hi,
Can someone please give me some input on the following warning in the JDeveloper online help!
"Warning: You cannot create an EJB finder view link that expresses the same relationship as a CMR."
I'm new to EJB, BC4J and JDeveloper. I created container managed entity beans with local interfaces only to represent my data and relationships. No problems with the mapping so far.
To test the beans I used Session Facades with remote interfaces and build a sample test client.
Now I thought I could create EJB Entity Facades, EJB Finder View Objects, EJB Finder View Links and EJB Application Modules to make use of the BC4J framework in order to speed up programming clients (JSP and JClient).
So I've started studying the JDeveloper online help (which seems to be very useful) and found the above mentioned warning.
Well, better a warning than nothing at all, but some more explanations would have been even better.
Is there no need to use view links with CMR?
How to achieve the same functionality (synchronizing two view objects in a master-detail-relationship) with CMR?
Do you know any examples? I couldn't find any examples using EJB entity facades in the "sample code" area on OTN.
Any comments about other (better) architectures are also welcome. Would it be better to use BMP entity beans in conjunction with BC4J?
Many thanks for your help!
Regards,
Eric

Steven,
thank you for your reply and suggestions - I'll count on that. If I find time I'll read this book. It seems to be very interesting.
For educational purposes I'd like to look at both persistence implementation strategies. I agree that it looks definitly easier to use entity objects. Certainly it's also performancewise a better choice.
Anyhow, could you give me some useful tips for cmp entity beans and finder view objects?
Is there something which works completely different if I use BC4J on top of it?
How to implement a master-detail relationship in JClient (Swing) for example?
What about writing an ejbfinder which doesn't return all, but all data where the foreign key is equal to a parameter passed to the finder method and use this as the source for a detail view object. This could be the primary key of the selected master. Well, I don't know whether this is doable. But that's what comes to my mind spontaneously.
Would this be a solution? I'm still thinking about the aforementioned warning in the online help regarding view links.
I guess the problem is that the foreign key is not part of the entity bean as it's not a cmp-field. Instead you have accessor methods to retrieve a related object or a collection of objects.
I'm sure my questions are not too complicated to answer. It's only hard for a beginner to get an overview.
I'm quite confident that I'll manage this if I give my best and get some help from knowledgeable people like you Steven.
Regards,
Eric

ADF BC: both ID and view link object as getter/setter in row impl

I notice something when generating the row implementation of VO that have links to other VO. I can't seem to find the logic behind it...
Following model:
users( id, address_id,name,firstname,...)
address(id, street,number,...)
their is an assosiation between the UsersEO and the addressEO. Their is also a view link between the UsersVO and the AddressVO based upon the assosiation of the EO's.
When we create the row implementation of the UsersVO we find a getter and setter for both the address_id as well as the address row object.
Why is this?
We have this issue because i added the UsersVO and the addressVO to the app module but i haven't added the link to the appModule but when i create the SDO from the appModule, the Users has both the address_id as the address row object.
THis does not seem to make sense. How do you use it correctly? Do you just need to set the address_id and can leave the row object null or do they both need to have the same? What if you set the address_id to 1 but the id in the address row object is set to 5...
How do the databindings handle these things?
To me it seems more logical that the VO only has a getter and setter for the address object and handles the address_id in the background according to the values in the address object.
Can someone explain me why this is implemented this way and how to handle it correctly?
Edited by: Yannick Ongena on Sep 27, 2010 5:29 PM

Yannick Ongena wrote:
When we create the row implementation of the UsersVO we find a getter and setter for both the address_id as well as the address row object.
Why is this? The definition of the VL allows you to optionally generate accessors for the underliying VOs, i.e. getAddressVO() in the UsersVO and getUsersVO() in the addressVO.
We have this issue because i added the UsersVO and the addressVO to the app module but i haven't added the link to the appModule but when i create the SDO from the appModule, the Users has both the address_id as the address row object. You should add the addressVO to the AM using the VL instead and not by itself.
THis does not seem to make sense. How do you use it correctly? Do you just need to set the address_id and can leave the row object null or do they both need to have the same? What if you set the address_id to 1 but the id in the address row object is set to 5...
As mentioned above, once you add the addressVO to AM using the VL, the framework will take care setting the value of the row objects accordingly.

View Link on two programmatic view objects

Hello,
I use Build JDEVADF_11.1.1.1.0_GENERIC_090615.0017.5407
I have two programmatic View Objects with data from other sources (an ArrayList in my example).
Now I would like to create a View Link on it. How can I do this?
I'm quite new on Java and ADF...
I know it is possible because I already found Steve's example 132 here [http://blogs.oracle.com/smuenchadf/examples/|http://blogs.oracle.com/smuenchadf/examples/]
But could somebody create a simple example based on my example classes below (which is understandable for a newbie like me ;-) ?
Has been asked already here, but I did not found a solution as yet.
Error with view link and ADF table Tree
This is my example code for the view objects:
Employee.java:
private Number empno;
private String ename;
private Number dept;
with getters and setters...
Department.java
private Number deptno;
private String dname;
with getters and setters...
public class StaticDataDepartmentsImpl extends ViewObjectImpl {
int rows = -1;
private List<Department> departments = new ArrayList<Department>();
protected void executeQueryForCollection(Object rowset, Object[] params,
int noUserParams) {
// Initialize our fetch position for the query collection
setFetchPos(rowset, 0);
super.executeQueryForCollection(rowset, params, noUserParams);
// Help the hasNext() method know if there are more rows to fetch or not
protected boolean hasNextForCollection(Object rowset) {
return getFetchPos(rowset) < rows;
// Create and populate the "next" row in the rowset when needed
protected ViewRowImpl createRowFromResultSet(Object rowset,ResultSet rs) {
ViewRowImpl r = createNewRowForCollection(rowset);
int pos = getFetchPos(rowset);
populateAttributeForRow(r, 0, departments.get(pos).getDeptno());
populateAttributeForRow(r, 1, departments.get(pos).getDname());
setFetchPos(rowset, pos + 1);
return r;
// When created, initialize static data and remove trace of any SQL query
protected void create() {
super.create();
// Setup string arrays of codes and values from VO custom properties
initializeStaticData();
rows = (departments != null) ? departments.size() : 0;
// Wipe out all traces of a query for this VO
getViewDef().setQuery(null);
getViewDef().setSelectClause(null);
setQuery(null);
// Return the estimatedRowCount of the collection
public long getQueryHitCount(ViewRowSetImpl viewRowSet) {
return rows;
// Subclasses override this to initialize their static data
protected void initializeStaticData() {
Department d1 = new Department();
d1.setDeptno(new Number(10));
d1.setDname("IT");
Department d2 = new Department();
d2.setDeptno(new Number(20));
d2.setDname("HR");
departments.add(d1);
departments.add(d2);
// Store the current fetch position in the user data context
private void setFetchPos(Object rowset, int pos) {
if (pos == rows) {
setFetchCompleteForCollection(rowset, true);
setUserDataForCollection(rowset, new Integer(pos));
// Get the current fetch position from the user data context
private int getFetchPos(Object rowset) {
return ((Integer)getUserDataForCollection(rowset)).intValue();
public class StaticDataEmployeesImpl extends ViewObjectImpl {
int rows = -1;
private List<Employee> employees = new ArrayList<Employee>();
protected void executeQueryForCollection(Object rowset, Object[] params,
int noUserParams) {
// Initialize our fetch position for the query collection
setFetchPos(rowset, 0);
System.out.println("in executeQueryForCollection");
super.executeQueryForCollection(rowset, params, noUserParams);
// Help the hasNext() method know if there are more rows to fetch or not
protected boolean hasNextForCollection(Object rowset) {
System.out.println("in hasNextForCollection. Rows:" + rows);
return getFetchPos(rowset) < rows;
// Create and populate the "next" row in the rowset when needed
protected ViewRowImpl createRowFromResultSet(Object rowset,ResultSet rs) {
ViewRowImpl r = createNewRowForCollection(rowset);
int pos = getFetchPos(rowset);
System.out.println("in createRowFromResultSet. Pos=" + pos);
populateAttributeForRow(r, 0, employees.get(pos).getEmpno());
populateAttributeForRow(r, 1, employees.get(pos).getEname());
populateAttributeForRow(r, 2, employees.get(pos).getDept());
setFetchPos(rowset, pos + 1);
return r;
// When created, initialize static data and remove trace of any SQL query
protected void create() {
super.create();
// Setup string arrays of codes and values from VO custom properties
initializeStaticData();
rows = (employees != null) ? employees.size() : 0;
System.out.println("in create(). Rows=" + rows);
// Wipe out all traces of a query for this VO
getViewDef().setQuery(null);
getViewDef().setSelectClause(null);
setQuery(null);
// Return the estimatedRowCount of the collection
public long getQueryHitCount(ViewRowSetImpl viewRowSet) {
return rows;
// Subclasses override this to initialize their static data
protected void initializeStaticData() {
Employee e1 = new Employee();
e1.setEmpno(new Number(2333));
e1.setEname("Emp1");
e1.setDept(new Number(10));
Employee e2 = new Employee();
e2.setEmpno(new Number(1199));
e2.setEname("Emp2");
e2.setDept(new Number(20));
Employee e3 = new Employee();
e3.setEmpno(new Number(3433));
e3.setEname("Emp3");
e3.setDept(new Number(10));
Employee e4 = new Employee();
e4.setEmpno(new Number(5599));
e4.setEname("Emp4");
e4.setDept(new Number(20));
Employee e5 = new Employee();
e5.setEmpno(new Number(5676));
e5.setEname("Emp5");
e5.setDept(new Number(10));
Employee e6 = new Employee();
e6.setEmpno(new Number(7867));
e6.setEname("Emp6");
e6.setDept(new Number(20));
employees.add(e1);
employees.add(e2);
employees.add(e3);
employees.add(e4);
employees.add(e5);
employees.add(e6);
// Store the current fetch position in the user data context
private void setFetchPos(Object rowset, int pos) {
if (pos == rows) {
setFetchCompleteForCollection(rowset, true);
setUserDataForCollection(rowset, new Integer(pos));
// Get the current fetch position from the user data context
private int getFetchPos(Object rowset) {
return ((Integer)getUserDataForCollection(rowset)).intValue();
Who can help?
Thnx in advance!
Rolf

Rolf,
I guess when we try to do it for you, we end up with almost the sample code provided by Steve Muench.
So there from my point of view it doesn't make sense to do it all over.
Take some time and study the sample code, run it without changes and after that try some changes which suits your use case better.
If you don't understand what's going on in the sample post the question here and we try to help you.
Timo

View Links for Programmatic View Objects

Hi All,
I created a read only VO called MyVO based on a sql query.
I created 2 programmatic view objects, MasterView and ChildView.
In a custom method in AMImpl class ,I iterate through this MyVO resultset and get the rows in a Row object.
Based on some attributes values of the Row, I populate both master and child View Objects.
I have created a view link between Master and Child Programmatic View Objects and have exposed them in AM.
Now I run the AM, and run the method exposed in client interface.
Now I click on my master and child programmatic views.
I see that the rows are populated in both of these programmatic VOs.
But when I click on viewlink which I have exposed under master, it doesnt show me any
record for child.
This is my method of AMImpl which is exposed in AM client interface.
public void constructLines(){
ViewObject vo= this.getMyVO1();
ViewObject master=this.getTransientVO1();
ViewObject child=this.getTransientLineVO1();
Row r,masterRow,childRow;
int count=0;
while(vo.hasNext()){
++count;
r=vo.next();
masterRow = master.createRow();
if(r.getAttribute("QuoteHeaderId")!=null)
masterRow.setAttribute("QuoteHeaderId",
r.getAttribute("QuoteHeaderId").toString());
if(r.getAttribute("QuoteLineId")!=null)
masterRow.setAttribute("QuoteLineId",
r.getAttribute("QuoteLineId").toString());
if(r.getAttribute("LineNumber")!=null)
masterRow.setAttribute("LineNumber",
r.getAttribute("LineNumber").toString());
master.insertRow(masterRow);
childRow= child.createRow();
if(r.getAttribute("RefLineId")!=null)
childRow.setAttribute("RefLineId",
r.getAttribute("QuoteLineId").toString());
if(r.getAttribute("QuoteHeaderId")!=null)
childRow.setAttribute("QuoteHeaderId",
r.getAttribute("QuoteHeaderId").toString());
child.insertRow(childRow);
This is stopping me from my development progress.
Any suggestion to solve this will be of great help.
Thanks,
Prabhanjan

Hi..
have you define relationship correctly between masterVO and childVO.sometime there may be the problem.

Add/remove view links at runtime !?

Hi,
how can i add/remove a view link to an already published RowSet and make the RowSet adapt to the new condition ??? (without loosing it's own linked Details)
The scenario: I have lot's of details which are linked to the same master. I remove the details from the session (sessionInfo.removeRowSet) when I don't need them to keep the active number of views in the session as small as possible ! When removing the Details from the Session I also have to remove their links to the master (to avoid exceptions). Further I want to establish the links again when the detail is added to the session again !?
I add links before publishing:
ViewLinkInfo view_12aLink = new ViewLinkInfo(master, "package1.LinkDef");
view_12a.addMasterLink(view_12aLink);
I can remove links after publishing with:
view_12aLink.removeViewLink(sessionInfo1.getApplicationModule());
but how to establish the link again ?:
ApplicationModule appMod = ....;
ViewObject vo = appMod.findViewObject(view_12a.getQueryInfo().getName());
view_12aLink.createViewLink(appMod,vo);
doesn't work !
if (view_12a.isOpen())
view_12a.close();
view_12a.addMasterLink(view_12aLink);
works !, but all the links where view_12a is master are broken !!!!
So what to Do ????
Thanks for every answer !
null

Your results are as expected per the imlementation. Basically you've established (two) ViewLinks between two sets of two instances of VOs.
Now you try and get an accessor to return a set of details. You need to establish a link between that detail set and it's details to use the accessor on the second detail to get the desired results. Basically you've to establish the chaining between appropriate instances of VOs and not just the outer VOs or VO members of your AM.

View link concept in oaf

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