Accessing all rows in Entity Object

Hi All,
I have a master-child relationship with ChildVO based on entity object. When user hits on save after making some changes, I would like to pass all rows in master view object and all fetched rows in entity object to a pl/sql api which takes pl/sql table datatypes. I would call this API in AM. So is there any way to access all entity rows of child view object?I tried to use view link accessors but it returns null. I can think of the following way:
for each row in master view object
loop
set current row for master view object. This would execute child vo for that master row.
then fetch all rows from child vo. populate pl/sql table
move on to next master vo row.
end loop;
Drawback with above approach is that we would excute child object query for every master row. Is there any direct way to access rows in entity object in AM? Any pointers on this would be of great help.
Thanks in advance,
Murari

"and all fetched rows in entity object"
is not a correct statement to make, EO will always represent a single row of the database record.you will get all the fetched rows in the VO, not the EO.
Tapash

Similar Messages

View all rows in Entity object

please I have a problem can I one help me
I want to get all rows from specific Entity object
example
I am now in validate method in XXX Entity Object and i want to get all the rows in XXX table from validate method(all rows)
can any one help me to do that
thanks in advance

ya sire
I want from validate method in EO XXX to validate all the rows in the table XXX
so I want to get all the rows from validate methods in the EO XXX
thanks in advance

How to access all rows one by one of a ADF table through managed bean

Hi Experts,
Hi i am new in ADF.
Could someone help me for solving the below case?
Scenario - I have table called Test_T1 which have 4 columns C1,C2,C3,C4. Have created EO,VO and AM for test_t1.
At the time of ADF page creation i selected the option 'Automatically Exposed UI components in New managed bean' (mynewmanagedbean.java).
From Data control drag and drop Test_T1 table in the page as a ADF table.
Set the properties for C1,C2,C3 is read only and C4 is an input text.
Have add after the table and attathed button action on the managed bean mynewmanagedbean.java.
At the time of running the page Test_T1 populated with some no. of rows (like 9).
How can i access all the above rows through pressing the button without selection of any of them.
Actually i want to print all the table rows in log file at the time of pressing the button.
Thanks in advance.

Hi Timo,
Thanks a lot for your reply.
I am using the JDeveloper 11.1.2.1.0.
As previously said I am totally new in this framework. So if you explain the solution given by you then it will be help full for me.
Don't know r you agree or not for this ?
When i put your resolution in the command button bean JDeveloper said TestDataRow type not found.
What will be the type and TestDataRow and what is missing in below code or how i will declare that in below code?
Also Could please mentioned the missing thing ?
package createrow.view.pagecreation.bean;
import oracle.adf.model.binding.DCBindingContainer;
import oracle.adf.model.binding.DCIteratorBinding;
import org.apache.myfaces.trinidad.model.RowKeySet;
import oracle.adf.model.BindingContext;
import java.util.Iterator;
import java.util.List;
import oracle.adf.model.bean.DCDataRow;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.RowSet;
import oracle.jbo.RowSetIterator;
import oracle.jbo.ViewObject;
public class OrdCreationWithManagedBean {
public String cb1_action() {
// Add event code here...
DCBindingContainer bindings =
(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding dcIteratorBindings =
bindings.findIteratorBinding("TestOrderItemAllocationVO1Iterator");
// Get all the rows of a iterator
Row[] rows = dcIteratorBindings.getAllRowsInRange();
TestDataRow dataRow = null;
for (Row row : rows) {
dataRow = (TestDataRow)((DCDataRow)row).getDataProvider();
// work with the row...
return null;
My page bindings like below
<?xml version="1.0" encoding="UTF-8" ?>
<pageDefinition xmlns="http://xmlns.oracle.com/adfm/uimodel" version="11.1.2.60.81"
id="OrdCreationWithManagedBeanPageDef" Package="createrow.view.pageDefs">
<parameters/>
<executables>
<variableIterator id="variables"/>
<iterator Binds="TestOrderItemAllocationVO1" RangeSize="25" DataControl="MainAppModuleDataControl"
id="TestOrderItemAllocationVO1Iterator"/>
<iterator Binds="TestOrderItemsEOView1" RangeSize="25" DataControl="MainAppModuleDataControl"
id="TestOrderItemsEOView1Iterator"/>
</executables>
<bindings>
<tree IterBinding="TestOrderItemAllocationVO1Iterator" id="TestOrderItemAllocationVO1">
<nodeDefinition DefName="createrow.view.TestOrderItemAllocationVO" Name="TestOrderItemAllocationVO10">
<AttrNames>
<Item Value="AllocationId"/>
<Item Value="AlocationSequence"/>
<Item Value="ProductName"/>
<Item Value="AllocationPercentage"/>
</AttrNames>
</nodeDefinition>
</tree>
<tree IterBinding="TestOrderItemsEOView1Iterator" id="TestOrderItemsEOView1">
<nodeDefinition DefName="createrow.view.TestOrderItemsEOView" Name="TestOrderItemsEOView10">
<AttrNames>
<Item Value="OrderId"/>
<Item Value="AllocationId"/>
<Item Value="ProductName"/>
<Item Value="OrderItemsQty"/>
</AttrNames>
</nodeDefinition>
</tree>
</bindings>
</pageDefinition>
Thanks In Advance

Filter rows in Entity Object Cache

Hi
Jeveloper version:Studio Edition Version 11.1.2.1.0
I have a table employees with columns employee_id, first_name, last_name, last_opr.
i have created entity object employees_eo. my entity cache should contain only rows which are not deleted(i.e last_opr not equal to 'D');
how do i achieve it.

I need to have only the rows which are not deleted(.e last_opr<>'D') in the entity object cache. (Not in the view object cache)
The reason why i need is: i have an alternate key in the entity object employees_eo with the combination of employee_id, department_id. it raises an error('already exists') when the same combination is found.
Lets say employee_id 100 with department_id 10 is deleted. Delete in the sense i am not deleting the record physically. Just flagging last_opr as 'D'.
When i am trying to add new record with employee_id 100 and department_id 10. it says 'already exists'.
so what i thought is , my entity object cache can contain only rows which are not deleted, so that alternate key will not check the deleted rows..

How to read all rows stored in pojo bean from jsp page

Hi sir
After storing all rows into ArrayList object in pojo class, how to retrieve those rows from jsp page and display them together one by one.
Regards

Well, you wouldn't do it in Java. You would do it in JSTL, preferably.
So if your POJO had a getRows method which returned your List of row objects, you would get the list like this (after putting the POJO into request scope under the name of "pojo"):
${pojo.rows}
And if you wanted to go through that list and process each of the rows, then c:forEach would be the way:
<c:forEach value="row" items="${pojo.rows} />
(check the documentation, I'm posting this from memory)

Pushing committed rows in entity to all view objects

I have a Entity object EO1. I have two view objects VO1 and VO2, both based on EO1.
Assume User 1 and User 2 logged into the application.
User 1 -> creates one row in VO1 and commits the data.
User 2 -> he is viewing VO2, can he see the newly created (without re-executing the view object VO2). I mean the newly created row is pused to VO2 ? (is there any solution to resolve this?)

check section <b> Implementing Database Update Notification Using ADF BC</b>
in this book link:
http://my.safaribooksonline.com/book/databases/oracle/9780071622547/active-data-services/ch20lev1sec5

Error while deleting a row from the Entity Object

Hi OAF Guys,
i am unable to delete the newly created row from the entity object.
let me explain my scenario.
1. i have a table of which some of the columns are mandatory.
2. I am writing the code in the validateEntity to check wether the user really enter anything into the fields.
3. My problem is, when the user creates row and wanted to delete the row without entering any details, the validate entity of the EO gets fired which will not allows to delete the row.
Is there any workaround for this problem.
Regards,
Nagesh Manda.

Hi Tapash,
I am very sorry for not providing you the complete details of my scenario. Here i am explaining
1. what code you have placed while creating the row and in validation method on EOImpl.
while creating a new row i am initializing the primary key of the EO with the sequence value.
2.When you say, you are unable to delete the row, are you getting a error message ? if yes, custom message or fwk error ?
its not the fwk error, its the custom message which wrote in my validateEntity method of EO to check whether the user had entered all the necesary columns or not.
3.How are you trying to delete the row ?
while the user clicks on the delete switcher i am getting the primary key of the row and searching for the row in the vo and finally deleting it.
The problem arises when the user creates a row, and later doesnt want to enter the details and delete it. Here while deleting the row the validateEntity method of the EO gets fired and doesnt allow me to do so :(.
Any way appreciate your help tapash.
Regards,
Nagesh Manda.

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 can i access all the objects of one schema from another schema

Dear All,
How can i access all the objects(Tables,Views,Triggers,Procedures,Functions,Packages etc..) and do the modifications of one schema from another schema (Without using synonyms concept).
Thanks in advance,
Mahi

First of all, synonyms only help you easy reference the object. It doesn't have any implication of object privilege.
As long as you have proper privilege on target object. You can access it with or without synonyms.
Assuming you have proper privilege of objects, you can use following command to assume schema owner.
ALTER SESSION SET CURRENT_SCHEMA = Schema_owner

Error while Insert new Row in Entity Base View Object

Hi,
can someone tell me the reason of following problem? :
There is a Entity Base View object, which is Binded as ADF Table in a JSFX Page.
I took the standard operations from the Control Panel: CreateInsert, Commit and Rollback.
Places them a ADF Buttons.
Whenever i am trying to insert a Row, after commit i am getting the ORA Error: ORA-01410: invalid ROWID.
By the way: The Entity Object is using the RowID as Primary Key.
When i press commit a second time, the the Row is inserted in the Database.
Any Idea, how to workarround this ORA Error?
Thank You!

n by default if you had no pkconstrainst in db,
in jdev default rowid as prim key.
as john said make the key as proper.
and do it.
if you have db constrainst in db.
it can be achived by dbconstrainstname with ora.
what am saying dbconstranist name will map it ora.
http://download.oracle.com/docs/cd/E21764_01/web.1111/b31974/bcadvgen.htm#BABEFGCI

Possible?Multi-Entity View Object with one Entity Object that is Read-only.

I know this sounds crazy, but I would like to create a multi-entity view object, where one entity object is based on a table in my application (we'll call it "Users", which basically stores the primary key for the person from the institutional people database), and the other table is a entity object based on a view of the institutional people database table (read only access), which we can call "People".
I know that since no updates will be done to the People table, it really should be a read-only View Object, but I would lose the ability to sort on attributes like Last Name, Hire date, etc, since those would be transient attributes in my ViewObject for the Users. By having People as an entity object, I can then create a multi entity view object and have the ability to join Users to People and be able to sort on the above mentioned fields (like Last Name).
The problem is that when I use the JDev (I'm currently using 10.1.2.1) AppModule BC4J tester, when I click on the multi-entity view object that I added to the AppModule it gives me an error:
oracle.jbo.RowCreateException) JBO-25017: Error while creating a new entity row for People.
----- LEVEL 1: DETAIL 0 -----
(java.lang.InstantiationException) null
I have tried to change all the attributes to updateable in my entity object, but no create method, and I have tried to make them all read-only, but no effect, I get the same error (probably because the People view is read-only in my schema).
Is there a way to change the entity object so that it will not try to create a new row when it runs the Tester? So that the multi entity view object behaves more like a view link, but gives me the added bonus of being able to sort on the Last Name column from the People table?
Thanks for any help on this subject...at worst, I will have to use the view link method to get the job accomplished, but it would be "cooler" if this would work!
Jeremy.

Steve, thanks for your quick response to my question.
To answer your questions, I was trying to create the Multi-entity View Object to give me more flexibility when working with my User table, and my People view. The flexibility I desired was that I would be able to sort my Users based on attributes in the People view. This is not possible when the there is only one Entity in my VO, and the People view data are all transient attributes, because they are not in the SQL statement.
Ultimately, after working with one of my colleagues, we decided to use the approach that you mentioned by creating a read-only VO with the SQL query we want to display to the user (contains both User and People data fields), and then use a different ViewObject when performing other actions on the User Table (such as inserts/updates/deletes). By using the setWhereClauseParam() method in the handleLifeCycle() for the JSP page, we should be able to navigate between the different View Objects, so that the user does not see any difference.
Thanks! Oh, and by the way, I have read your article you included before, and I have used it many times before to tune my View Objects! Thanks!

Use of Entity object

Hi Everyone,
I am totally new to using JDeveloper and the ADF Framework.The following is my Environment setup :-
1] Oracle8i Enterprise Edition Release 8.1.7.4.1 - Production
2] JDeveloper 9.0.5.2
Need ur help in answering my following queries :-
1] Is it possible to access the Entity object directly from a calling class and execute the INSERT, UPDATE and DELETE operations ? In either of the cases, please let me know how it can be done, preferably with some sample code.
2] Can I used the View object without Entity object for retrieving data from the database ? Please help me with some sample code if possible.
Thanks in advance.

Hi,
Detail Rule, copy attribute value form master.
In DetailEOImpl:
protected void create(AttributeList attributeList)
setAttribute(MASTERFIELD,this.getMaster().getMasterField());
super.create(attributeList);
Master rule, set flag to 0 if no details else set to 1.
In the MasterEOImpl added method to check if detail row exists based on Row Iterator => no db retrieval?
This method also sets the flag accordingly:
protected void checkHasOtherDetails()
oracle.jbo.RowIterator ri = this.getRetrieveFromdetail();
ri.last();
// last() must be called else hasNext() returns true even on last delete ???
Number hasDetails = Constants.NUMBER_NO; // = 1
if (ri.hasNext() || ri.hasPrevious())
hasDetails = Constants.NUMBER_YES; // = 0
if (!getHasDetailsFlag().equals(hasDetails)) {
this.setHasDetailsFlag(hasDetails);
I call this method in the remove method of the detailEOImpl:
public void remove()
this.getRetrieeFromMaster().checkHasOtherDetails();
super.remove();
To set the flag I added follwoing code in the create method of the DetailEOImpl:
protected void create(AttributeList attributeList)
setAttribute(MASTERFIELD,this.getMaster().getMasterField());
**** ADDED ***
Number masterHasDetailsFlag = getRetrieveFromMaster().getHasDetailsFlag();
if (!masterHasDetailsFlag.equals(Constants.NUMBER_YES)) {
getRetrieveFromMaster().setHasDetailsFlag(Constants.NUMBER_YES));
super.create(attributeList);
One more question:
Is there a danger of calling last() on row iterators in create/update/remove methods of *Impl files?
=> current row changed => any effect on display in JPanel
Thanks
Frederic
PS All variable/method/class names have been manually renamed in this code so some small syntax problems may exist.

Entity object not found

JDeveloper 10g EJB testing on standalone OC4J exception java.ejb.ObjectNotFoundException followed by:
myEJBHome_EntityHomeWrapper13.finderMethod(). The Servlet has performed the initial.lookup for the bean successfully and is accessing a finder method thru the remote home interface. The thing is, I had this working and have somehow managed to break it. Either while playing around with deployment and/or client-application descriptors or something I'm not even aware of. Also, what is the "Wrapper13" which gets appended to my home class which number changes with each debug session?
Any suggestions are appreciated.

Let me go thru the steps that I performed and maybe you can tell me where I went wrong. Like I said I had it working before.
1) Created a project for an Entity Bean based on a Table View.
2) Created a Servlet to test the EJB and it was able to lookup the EJB
3) Looped thru the findAll() Home method and displayed all of the view rows
4) Created a finder method using the findAll as an example by:
6) Adding a finder method using the Bean properties dialog and to return an EJBObject with a String param used in the EJB QL and selecting to expose it thru the Home interface.
7) The matching prototype was added to the RemoteHome class.
8) Added the call in the Servlet and I get the Entity object exception.
I just recreated this by creating a new finder method as I wrote these steps and got the same exception. Is there some step(s) I'm missing? Thx for any help.

Entity Object's "addNewRow" Permission, how to implement?

Hi,
this is a generic question about an implementation strategy to be followed for ADF Authorization.
I've been researching the definition of permissions at the entity object level, and successfully tested the 3 permission targets available: read, update, removeCurrentRow.
However, I'd actually need the full set of permission targets for CRUD operations, which means that ADF lacks an "addNewRow" to secure row creation on EOs.
What should be the strategy to implement that?
Is it a planned feature so waiting till, say, 11g Release 2 should bring it to the table, or has it been left out by design and thus it just won't be added? In the latter case, how to actually implement it?
I'd need to actually hide/disable the Create/CreateInsert button on my edit pages if the underlying EO does not allow new row creation for the current role. I gave a thought to EO's Custom Properties as a way to handle that extra permission flag, but is it a viable way? Can they be accessed through EL so that I can, say, use them directly in the Rendered/Disabled property of the button to regulate access?
Or would you suggest another strategy altogether?
Please share your ideas.
thanks,
RickyS

Well, I can definitely see some benefits in having security at the model layer, at least in our scenario. In a complex app with many edit pages often dealing multiple times with the same EOs, having to specify a single set of policies on the EO itself and see it automatically implemented on every page seems a plus and a step ahead from 10g - not that I tried Security in 10g, but I know the approach. Seeing fields automatically become read-only or datacontrol operation buttons such as Delete become disabled without specifying anything on the page is cleaner and will speed up development a bit, too (for large numbers of pages that might be significant, on a small app it's probably irrelevant).
Probably not as useful and powerful as model-driven lists, but still a welcome feature. You probably have a point about the double mainteinance, but that may be avoided if the BC layer security truly encompasses everything (e.g. if I can't rely on a "create" permissions, I'll certainly have to maintain additional code as well as additional BC data such as custom properties to deal with that, and this is even worse).
Another point is that I might want to enable/disable functionality on the page via EL/backing bean based on BC permissions, and that seems useful. Being able to express a condition like "this EO is accessible" or "this attribute is accessible" is sometimes much superior to "user belongs to this role". It's better to decouple roles from the secured targets and just use the latter, IMHO. Especially becuse we'll likely won't have a fixed set of static roles defined in advance for all customers we'll deploy our webapp to.
Just my 2 cents, anyway, you might end up being totally right :-)
Cheers,
RickyS

Two View Objects & One Entity Object

Has anyone ever had it where they create a row from a view object, set some attributes, insert it into that view object, and it shows up in another view object (as well as the one the row was actually inserted on)? Both of these view objects are using the same single entity object, it's just that their where clauses are slightly different. When I do a commit and then executeQuery, all is good and the new row only shows up in the intended view object.
Here is the code in my app module to do a row insertion on one of the view objects.
public void addQCNote(int userID, Number theStudyID, String theNote)
          try
               //StudyFtsViewObjImpl freeTextVO = getStudyFtsViewObj();
               StudyFtsQCOnlyViewObjImpl freeTextVO = getStudyFtsReadOnlyViewObj();
               freeTextVO.setWhereClauseParam(0, theStudyID);
               DBSequence freeTextTypeCode = null;
               StudyFTSQCCodeValueViewObjImpl freeTextCodeValue = getStudyFTSCodeValueViewObj();
               freeTextCodeValue.executeQuery();
               Row[] freeTextCodeValueCurrentRowArray = freeTextCodeValue.getAllRowsInRange();
               // There SHOULD only be one ... but if there is more, pick one - geeez.
               for (int i = 0; i < freeTextCodeValueCurrentRowArray.length; i++)
                    Row currentFTRow = freeTextCodeValueCurrentRowArray[0];
                    freeTextTypeCode = ((DBSequence) (currentFTRow.getAttribute(StudyFTSQCCodeValueViewObjRowImpl.CODEVALUE1)));
               Row freeTextRow = freeTextVO.createRow();
               // Sets up default values for insertion into db at commit time
               freeTextRow.setAttribute(StudyFtsQCOnlyViewObjRowImpl.PARENTENTITYID, theStudyID);
               freeTextRow.setAttribute(StudyFtsQCOnlyViewObjRowImpl.PARENTENTITYNAME, "STUDY");
               freeTextRow.setAttribute(StudyFtsQCOnlyViewObjRowImpl.FREETEXT, theNote);
               freeTextRow.setAttribute(StudyFtsQCOnlyViewObjRowImpl.FREETEXTTYPECD, freeTextTypeCode);
               freeTextRow.setAttribute(StudyFtsQCOnlyViewObjRowImpl.CREATEDID, new Number(userID));
               freeTextVO.insertRow(freeTextRow);
               freeTextVO.setCurrentRow(freeTextRow);
          catch (Exception ex)
               System.out.println("Exception in AR3MainAppModule.addQCNote: " + ex.toString());
-brian

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Re: Row created in one ViewObject added to all VOs based on the same Entity
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Sascha

Accessing all rows in Entity Object

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