ViewLink accessor attribute NULL when VO has bind vars

Hi! I noticed that a ViewLink accessor attribute returns a NullPointer when the ViewObject SQL has a bind variable. i have a data model with Dept and Employee ViewObjects that is connected via viewlink.
I inserted a bind parameter :pDept and added on the whereclause "DeptNo = :pDept" to filter the employee returned based on Department. I then created a new Dept Row and a new employee on the same transaction (no commiting yet). When I got a reference to the viewLink accessor on the EmployeeViewRowImpl, i got a null reference when i tried to reference the viewLInk accessor for the department view:
//code snippet inside EmployeeViewRowImpl
void setAnAttribute(Object value) {
Row row = getDeptView(); //returns null
}I notice that when I removed the bind variables and the where clause, I get the correct ViewLink accessor.
Is this expected behavior? if this is a bug, how can i get around this problem?

hi anton.
Maybe this is also related to your issue:
"Difference Between View Link Attribute and View Link Instance in Data Model"
http://radio.weblogs.com/0118231/stories/2004/11/08/differenceBetweenViewLinkAttributeAndViewLinkInstanceInDataModel.html
success
Jan Vervecken

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ViewLink Accessor returning null when VO has a BindParameter

I have DeptView and EmpView that is link with a DempEmpViewLink. the link is two way so DeptView has a RowIterator Viewlink accessor and EmpView has a Row ViewLInk accessor.
However inside the employeViewRow code, I always get a Null value when I access the Dept accessor.
//inside Employee View Row.java
Row row = this.getDeptView(); //returns null
...This happens when The DeptView has a bindvariable because I need to filter the DeptView so I have a where clause on the SQL statement. However, when I remove the whereclause and the bindvariable, the Dept ViewLInk accessor returns the correct row.
regards,
Anton

Hi Chris,
My scenario is actually a Invoice Header and Details screen.
I have a HeaderView, DetailsView, and a HeaderDetailLink defined by a Composition Assoc. The headerView has a BindParameter on it. So on my page, I can view/navigate invoices and its details. but at the same time using the same viewobjects and same page, I need to be able to create and save a record on the header and details at the same time by just one Commit/Save. (Similar to a Forms application (header Form, and Details table).
On pageload i execute a methodaction that inserts a row on the header and the detail at the same time. Then on the jsp page, I put some values on the header. Next i put a value on a fieldA on the detail. But when I put a value on fieldA, I need to compute the value of fieldB on the detail based on fieldA and a field of the Header row, fieldHeader.
So to compute fieldB, I put a code on the settermethod of fieldA in the DetailRowImpl.java file:
//detailRowImp.java, setFieldA()
public void setFieldA(Number value) {
setAttributeInternal(FIELDA, value);
... Row row = getHeaderRow(); //returns null
Number fieldbValue = compute(value, row.getAttribute("FieldC")); //NullPointerException
}What are your thoughts? any suggestions?
regards,
Anton

QBE style(Find-Execute) Query not executing when VO has bind parameter

I have an Entity Based ViewObject that is composed of 3 Entities so the entities are related through an Assoc. Then the ViewObject also has a bind paremeter defined and used in the WHERE clause.
In my page everything is fine until when I use/click on the Find operation on the JSF page. When the Find operation is executed the page/form goes blank so I can enter by QBE query. Now when I Execute my search by executing the ExecuteWith params operation. Nothing is happening to the screen, it seems that query was not executed. Although there was no errors or exceptions displayed.
However if I remove the bind parameter, and execute the Execute operation instead after going to Find mode, the query is executed properly and I get expected results.
My problem is a bit general, but are there anyone who had a similar problem like this? Im still in the process of creating a test case.
regards,
Anton

Hi Frank,
But the "ExecuteWithParams" operation provides the bind variable right? (i had the value hardcoded on the pagedef). So it must have supplied a value. I also noticed that this is happening only when if the VIewObject contains two or more Entities. If the Viewobject has only 1 entity, the ViewObject queries properly.
Anyway Frank, I had found a fix for this. I set an InvokeAction on the pagedef that binds to the ExecuteWithParams that is invoked during page load only(!postback condition). and then I just use the Find-Execute operations instead of the Find-ExecuteWithParams operations that I used previously.
I will try to replicate the issue again to investigate what's really going on. I just want to know if its a bug or just an expected behavior or i just made a mistake.
regards,
Anton

ViewLInk Accessor unpredictable, sometimes null, sometimes with value

When does a ViewLink Accessor gets initialized or assigned a value.
consider the following code:
setAnAttribute(Object value) {
   setAtttributeInternal(ATTRIBUTEINDEX, value);
   Row row = getViewLinkeAccessorView();
   if(row!= null)   //sometimes this one executes the if block, sometimes not.

hi anton.
Maybe this is also related to your issue:
"Difference Between View Link Attribute and View Link Instance in Data Model"
http://radio.weblogs.com/0118231/stories/2004/11/08/differenceBetweenViewLinkAttributeAndViewLinkInstanceInDataModel.html
success
Jan Vervecken

ViewLink accessor erratic; sometimes returning with value, sometimes null

When does a ViewLink Accessor gets initialized or assigned a value.
consider the following code:
setAnAttribute(Object value) {
   setAtttributeInternal(ATTRIBUTEINDEX, value);
   Row row = getViewLinkeAccessorView();
   if(row!= null)   //sometimes this one executes the if block, sometimes not.
}

When does a ViewLink Accessor gets initialized or assigned a value.
consider the following code:
setAnAttribute(Object value) {
   setAtttributeInternal(ATTRIBUTEINDEX, value);
   Row row = getViewLinkeAccessorView();
   if(row!= null)   //sometimes this one executes the if block, sometimes not.
}

[Office365][Calendar]When event has alot of attachments, sometimes value of subject is null.

I use below Office365 rest API to get events of specified calendar.
https://outlook.office365.com/api/v1.0/me/calendars/{calendar_id}/events
When event has alot of attachments, sometimes value of subject is null.
Is it bugs of REST API ?

Hi LanNT,
Thanks for your post! The issue may be with returning Body for the specific item you are opening. We just tried reproing and were unable to, when accessing an event with or without attachment. The body displays fine. Do you see
this behavior occur with multiple events with attachments?
Please let me know if you have any questions or need more info.
Thanks,
Venkat

Problem with viewLink accessor

(ADF BC, JDeveloper 10.1.3 SU5)
Hello,
I have a master and a detail VO and a view link between them.
Both VOs are entity based, master primary key is DBSequence.
ViewLink cardinality is 1 to 0..1
Let's say ViewLink accessor name is DetailLink.
Master is inserted by ADF Faces table. Detail is inserted in code like below:
Code in AppModuleImpl.java:
... get master row from master VO custom row set iterator ...
detail = getDetail().createAndInitRow(master);
... init attributes ...
getDetail().insertRow(detail)
System.out.println("Master has detail: " + (getMaster().getDetailLink() != null));Even though the detail row has correctly set foreign key attribute, output of this code is not always "Master has detail: true". For example for newly started embedded OC4J it is "Master has detail: false".
When I try to debug this code, getDetailLink() works correctly.
What's wrong?
Rado
Message was edited by: RadoK
(added omitted insertRow(detail))

Strange is that getting detail entity from association accessor is successful.
master.getMasterEntity().getDetailFromAssocAccessor() != null is true, but
master.getDetailFromLinkAccessor() != null is false.
The view link source and destination attributes are association from master detail association.
Please help me find where the problem is.
Rado

ViewLink Accessors generating faulty SQL

It seems that ViewLink Accessors use a back-to-front WHERE clause when trying to accesses the linked view.
ViewSource has attribute SourcePK used to link to ViewDest.DestFK representing a foreign-key 1-many relationship.
We expose the accessor for the Source - getViewSource() - which is added to ViewDestRowImpl.java. We don't expose any accessor for the Dest.
Examining the ViewLink SQL shows:
Source attributes: EntitySource.SourcePK
Where: ? = EntityDest.DestFK
Query clause: EntitySource.SourcePK = EntityDest.DestFK
When we call getViewSource() faulty SQL causes an exception:
oracle.jbo.SQLStmtException: JBO-27122: SQL error during statement preparation. Statement:
SELECT EntitySource.SourcePK, EntitySource.SourceDataAtt WHERE (? = EntityDest.DestFK)
This seems like the WHERE clause for the reverse accessor (ie getViewDest() to get the DEST rows for a particular SOURCE row).
EntityDest is not in ViewSource at all.
Is this a bug?
Should I be defining a reverse-link (Source and Dest reversed)? - I thought ViewLinks were bi-directional else why allow the accessor to be exposed?
Tony.

This seems to be the same problem as
View links
I've managed to get things working by
(a) setting both views' bind types to oracle rather than '?'. [Less than ideal, because I want to run against non-Oracle database. I'll cross that bridge later, I guess...]
(b) removing the "Where" clause from the ViewLink's XML file (as specified in other thread). It will come back if you edit anything...
(c) I may also have had to delete my classes directories to ensure everything was recompiled from scratch. [I've got one project dependent upon another and there's a cross-compilation bug that might have caused problems.]
BTW: I'm on 9.0.3.1035.
There's definitely a bug or two wrapped up in here - hopefully they have been or are being fixed.
Something else that concerns me that I haven't had time to validate yet: is the view link accessor giving me a row from the correct view? I'm wondering whether there's a problem because I wouldn't have expected any SQL to be run when I use the (e.g.) getMasterView1 accessor; the instance of the master view linked to the detail row from which I'm calling the accessor has already been executed, so the row ought to be in the cache.
My master-instance isn't called MasterView1 though; is it possible that an instance called MasterView1 is being executed?
I guess I'll look into it....
Hope that's useful to someone,
Mike.

[svn:fx-trunk] 8491: * Fixed NPE caused by SkinPart functionality when metadata has a typo.

Revision: 8491
Author:   [email protected]
Date:     2009-07-09 13:03:59 -0700 (Thu, 09 Jul 2009)
Log Message:
Fixed NPE caused by SkinPart functionality when metadata has a typo.
tests Passed: checkintests
Needs QA: YES
Needs DOC: NO
Bug fixes: SDK-22073
API Change: NO
Is noteworthy for integration: No
Code-level description of changes:
Modified evaluate(Context cx, MetaDataNode node) to check for a null
id before comparing it.
Ticket Links:
    http://bugs.adobe.com/jira/browse/SDK-22073
Modified Paths:
    flex/sdk/trunk/modules/compiler/src/java/flex2/compiler/as3/binding/TypeAnalyzer.java

[svn:fx-trunk] 9407: Reordering the if-statement in isMeasureFixed() exposed that hostFormat can be null when measure() is called if styles changed and measure is done before the next commitProperties .

Revision: 9407
Author:   [email protected]
Date:     2009-08-19 15:11:34 -0700 (Wed, 19 Aug 2009)
Log Message:
Reordering the if-statement in isMeasureFixed() exposed that hostFormat can be null when measure() is called if styles changed and measure is done before the next commitProperties. This states test exposed this.
We should rethink if we want to clear hostFormat rather than have a hostFormatChanged flag. If there is no hostFormat at measure then it has to be fixed because there is no line break format to check for auto-size.
QE notes:
Doc notes:
Bugs: SDK-22779
Reviewer: Gordon
Tests run: checkintests
Is noteworthy for integration: no
Ticket Links:
    http://bugs.adobe.com/jira/browse/SDK-22779
Modified Paths:
    flex/sdk/trunk/frameworks/projects/spark/src/spark/primitives/RichEditableText.as

Oh my god, it is too long! You definitely check out types, casting and especially ODP.Net (it does everything for you)... etc. They can help you to simplify your code. I do not have enough time to copy paste it to Studio and understand and solve your issue, so I got title of your message as your main question.
In Oracle, you can create an autonumber field by using sequences object. This is really useful when you need to create a unique number to act as a primary key.
Basically you can create a sequence simply typing;
CREATE SEQUENCE MY_SEQUENCE;
now you have a sequence called "MY_SEQUENCE"... Then, I advice you select a number from sequence;
select MY_SEQUENCE.nextval from dual;
I said I advice actually kinda must, although it called sequence, I cannot be sequential. Do not even try to predict the value. You can be sure that it is unique number so you can use it.
Then insert you record and use that number part of your primary key. I think that's it. Have fun.

A NULL interface pointer has been dereferenced

This was an answer to someone who had this error message. I scoured the web to see what I could find. This is what I wrote to him. Does anyone else have any answers or know a work around???
Hello,
After doing some research on the error message, "A NULL interface pointer has been dereferenced". There may be a work around.
Are you on a Mac? If you are, you may want to try updating CS4 and Installing the 9.0.2 update either manually or using the Adobe Update Manager. However you mentioned you exported to AVI which I know is a PC codec. Still maybe there is a adobe update for the PC as well.
Also, if you are using video footage that uses interframe compression in any of the video placeholders (mpeg, h.264, mp4, etc), or if you have one or two mp3 or aic audio files, that may be an issue as well.
If that's the case, convert audio files to aiff or wav, and convert the video into something that doesn't use interframe compression. Maybe Photo Jpeg, Animation, or apple pro res.
Are you using just pictures? If so, then that info won't help either.
If you are just changing the text and using pictures, I'm not sure why you are getting the NULL interface error.
Answer the questions above and I'll try and help you out some more.
Thanks,
Cassidy Bisher
President
DropDrop
http://www.dropdrop.com
Hello once again,
If you could review this small issue I had with one of the templates or forward this to the customer service department.
I have been attempting to render the Grid Warp Final Main Comp for some time now. It took me about 10 minutes to swap the text and pictures out, but the rendering process has taken me over 20 hours and I still havent been able to pinpoint the issue. I have tried rendering in After Effects CS3 and After Effects CS4 both which give the same result. The rendering process will get to anywhere from 400-600 frames and it will give me a warning saying: "After Effects warning: A NULL interface pointer has been dereferenced." Right after clicking OK on this warning another window comes up saying After Effects error: Quicktime export failed (14). This happens whether I export as FLV or if I use the render queue to do avi. Please advise on a possible solution when you have a chance as this heavily delayed our project time line. I have made sure there is no missing files in the project.
David

I got the same exact error in Windows 7. Seems to be a video inside the composition or a part of the composition itself thats the problem. I've tried increasing both the swap space and the ram usage. Still nothing but the video does push a solid 3 gigs of ram usage. I'm using cs3 myself.

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Hello,
I've configured SAP EP 2004 SP18, ume datasource is LDAP Active Directory, with SSL, and as administrator I can reset the password.
The problem appears when password is expired and the flag "user must change password" is marked in Active Directory and in the portal dosen't appear the form to the user to change the password.
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Delete navigation attributes - error when reactivating MPOS

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I have deleted some navigation attributes, and when I try to reactive the MPOS I get an error - however logging has not been switched on initially so I cannot see what's wrong. I have tried to run all possible consistency check on the MPOS, none showed any error. Have you encountered somewhat the same issue?
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hi,
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ViewLink accessor attribute NULL when VO has bind vars

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