ExecuteWithParams with LOV

Hi,
I have the following query in a view object:
SELECT Id, Name, CompanyId FROM persons
WHERE CompanyId = :p_CompanyId
Now I want to make a search page for that.
I can drag the ExecuteWithParams to the page and then I get an input field for p_CompanyId.
But how can I get a LOV for p_CompanyId? The values for the LOV are in an other View Object
Thanks in advance.

Hi,
you didn't mention your JDeveloper version but there are many blog posts about dependent LOVs for 10g and also 11g:
http://technology.amis.nl/blog/2202/mutually-dependent-dropdown-lists-in-adf-faces-leveraging-adf-bc-bind-parameters-and-adf-faces-partial-page-rendering
http://andrejusb.blogspot.com/2008/12/cascading-lovs-in-oracle-adf-11g-update.html
http://www.oracle.com/technology/products/jdev/tips/fnimphius/adfswing/lov/index.html
http://groundside.com/blog/GrantRonald.php?title=jdeveloper_11_business_services_cascadin&more=1&c=1&tb=1&pb=1
regards,
Branislav
Edited by: Branislav Nemec on Dec 3, 2009 3:46 PM

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Performance issues with LOV bindings in 3-tier BC4J architecture

We are running BC4J and JClient (Jdeveloper 9.0.3.4/9iAS 9.0.2) in a 3-tier architecture, and have problems with the performance.
One of our problems are comboboxes with LOV bindings. The view objects that provides data for the LOV bindings contains simple queries from tables with only 4-10 rows, and there are no view links or entity objects to these views.
To create the LOV binding and to set the model for the combobox takes about 1 second for each combobox.
We have tried most of tips in http://otn.oracle.com/products/jdev/tips/muench/jclientperf/index.html, but they do not seem to help on our problem.
The performance is OK (if not great) when the same code is running as 2-tier.
Does anyone have any good suggestions?

I can recommend that you look at the following two bugs in Metalink: Bug 2640945 and Bug 3621502
They are related to the disabling of the TCP socket-level acknowledgement which slows down remote communications for EJB components using ORMI (the protocol used by Oracle OC4J) to communicate between remote EJB client and server.
A BC4J Application Module deployed as an EJB suffers this same network latency penalty due to the TCP acknowledgement.
A customer sent me information (that you'll see there as a part of Bug# 3621502) like this on a related issue:
We found our application runs very slow in 3-Tier mode (JClient, BC4J deployed
as EJB Session Bean on 9iAS server 9.0.2 enterprise edition). We spent a lot
of time to tune up our codes but that helped very little. Eventually, we found
the problem seemed to happen on TCP level. There is a 200ms delay in TCP
level. After we read some documents about Nagle Algorithm, we disabled a
registry key (TcpDelAckTicks) in windows2000 on both client and server. This
makes our program a lot faster.
Anyway, we think we should provide our clients a better solution other than
changing windows registry for them, for example, there may be a way to disable
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Bug 2640945 was fixed in Oracle Application Server 10g (v9.0.4) and it now disables this TCP Acknowledgement on the server side in that release. In the BugDB, I see backport patches available for earlier 9.0.3 and 9.0.2 releases of IAS as well.
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The customer's workaround in the interim was to disable this TCP Acknowledgement at the OS level by modifying a Windows registry setting as noted above.
See Also http://support.microsoft.com/default.aspx?kbid=328890
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CurrentUISkin problem with LOVs

Hello JheadStart Team
I'm using user selected skin by using menuAdminService and setting adf-faces-config to
<skin-family>#{jhsDynamicMenu.currentUISkin}</skin-family>
but i have problem with LOV's:
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Kind regrads

I was able to reproduce the problem. We will provide a fix in the next patch release.
For now, you can apply the fix yourself as follows:
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public void setCurrentUISkin(String currentUISkin)
this.myCurrentUISkin = currentUISkin;
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public String getCurrentUISkin()
try
if (JhsModelServiceProvider.getInstance().getJhsModelService() !=null)
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// do nothing, return "previous" currentUISkin;
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Steven Davelaar,
JHeadstart Team.

ComboBox with Lovs on Jdev 11g r2

I'm facing this Error on JSF on Jdeveloper 11g r2, Windows7.
I'm Using a ComboBox with Lovs on af:table.
I'm getting this Error below when I invoke the (Search) option... to see the popup list.
it works fine in every other case, if I select from the small list works ok, enter the text works ok. everything but the search option.
thank you for any help.
JBO-29114 ADFContext is not setup to process message for this exception.
Use the exception stack trace and error code to ivestigate the root cause
of this exception. Root cause error code is JBO-29000.
<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase RENDER_RESPONSE 6
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     at oracle.jbo.ExprEval.doEvaluate(ExprEval.java:1253)
     at oracle.jbo.ExprEval.evaluateForRow(ExprEval.java:1075)
     at oracle.jbo.server.ViewObjectImpl.createViewAccessorRS(ViewObjectImpl.java:16203)

I'm not Using a custom seach.....
I just define my LOV using a Model Driven List. and select Option ComboBox with Lovs.....
the lov with the issue belong to a detail table. I got several ComboBoxes working fine in similar model.... master/detail and the lov in the detail table.
thank you

How to do search with LOV+oracle adf

Hi,
I m using jdeveloper 11g with oracle adf .As i know that input text with LOV has default search facility. Plz tell me how to make search by using LOV .so that when i click on input text with LOV data should come in form.

hi
check this
http://andrejusb.blogspot.in/2008/02/list-of-values-component-in-search-and.html
Regards

Dymanic parameter with LOV from command demanding a parameter

Hello,
I have a problem with creating dynamic parameters. I use different query to form list of values for the main query parameter. Let's say this parameter is manufacturer_name, so I'm selecting distinct manufacturer_name values from some table. But every time I run this report I want report to promt me with parameter (some special tag) for select some filtered manufacturers. But when I create LOV query with parameter (tag), report keeps asking me for this parameter forever and never gets to show parameter promt for the main query with LOV from the first one. Am I doing something wrong or what I want is just not possible?
Thanks
gemi

You might have given a default value to a main report command level parameter. Go to database expert in main report and edit the command level parameter and remove the default value in it.
and check the report.
Regards,
Raghavendra

Item(select list) with LOV and Report with link = changed value item

Hello,
On one page I have:
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- Items 'factory' and Report 'factory'(standard created with 'Form with Report' on the same page).
Situation:
All works fine. I selected first a LOV Item 'P_name' (say 'Jane'). But....
Only when I select a record (to change the values) from the report 'factory' then LOV Item 'P_name' become empty. Report used a link to the same page to fill the report items 'factory' and make also the LOV item empty.
Question:
I have made a process that write the name 'Jane' to table.
I see two possibilities:
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Thanks Walter!

1) what i meant was for you to test this ridiculously huge LOV outside of htmldb, but it occurred to me last night that you could, in fact, be hitting a limit of ours. after some poking around, i have confirmed that. select list items in htmldb are currently limited to 10,000 rows. this was initially done for performance reasons, but they're now opening up the restriction. if you really need to work with that many rows where the user is allowed to pick from a set of values, consider using a popup item type instead. it'd help your app performance as well (in my test cases, it stank to have to wait for my 10k select list rows to come down to my browser).
2) sorry to not have been more clear about this, but when you set your item's "Source Type" back to "Database Column", you'd have to specify that column in the "Source or value expression" field. also, you can't put a sql query into that "Post Calculation Computation" field. as i said before, "you can take a look at the attribute-level help for that field to see implementation examples."
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regards,
raj

Combobox with LOV showing ID but would like to display more meaningful text

Hi, I'm experimenting with JDeveloper 11.2.
I have a base table/eo with an FK ID to another table/eo which is a lookup table.
On the base tables view I have created a combobox with LOV but it is showing the ID and I'd like it to show the name from the lookup table.
So rather than showing the ID 1 I'd like it to show James instead.
I can just about remember being able to do this in Oracle Designer.
I know this is something stupid but I've searched Google and not come up with anything.
CREATE TABLE ACCOUNTS
ACCOUNT_ID NUMBER NOT NULL,
ACCOUNT_LOGIN VARCHAR2(30 CHAR) NOT NULL,
FIRST_NAME VARCHAR2(50 CHAR) NOT NULL,
LAST_NAME VARCHAR2(50 CHAR) NOT NULL,
EMAIL VARCHAR2(150 CHAR),
CREATED_TIMESTAMP TIMESTAMP(6) WITH LOCAL TIME ZONE DEFAULT SYSTIMESTAMP NOT NULL
ALTER TABLE ACCOUNTS ADD (
CONSTRAINT ACCOUNTS_PK
PRIMARY KEY
(ACCOUNT_ID));
CREATE TABLE ACCOUNT_MODULE_ROLES
ACCOUNT_MODULE_ROLE_ID NUMBER NOT NULL,
ACCOUNT_ID NUMBER NOT NULL,
MODULE_ID NUMBER NOT NULL,
ACCOUNT_ROLE_ID NUMBER NOT NULL
ALTER TABLE ACCOUNT_MODULE_ROLES ADD (
CONSTRAINT ACCOUNT_ROLES_PK
PRIMARY KEY
(ACCOUNT_MODULE_ROLE_ID));
ALTER TABLE ACCOUNT_MODULE_ROLES ADD (
CONSTRAINT AMR_ACC_FK
FOREIGN KEY (ACCOUNT_ID)
REFERENCES ACCOUNTS (ACCOUNT_ID)
ON DELETE CASCADE
ENABLE VALIDATE);
I've created the LOV on AccountModuleRolesView.

1. Create a transient attribute AccountFirstName. - Created in AccountModuleRolesView1, attributes a transient string called AccountFirstName with an alias of VIEW_ATTR
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3. In attribute mapping ... Where abouts is that? After I've created the LOV?
map ... accountId to accountId I did this in the LOV, list return values, using the VA's I linked in.
and fristName to accountFirstName. Did this also in the same place.
4. In UI hints shuttle accountFirstName. The field doesn't show up in the list to shuffle, only the underlying eo attributes.

Navigation with LOV

In applets developed with dac .can i navigate to a particular record by selecting
a value in LOV .How can i do this..
some one help me

Hi ,
You can navigate with LOV .YOU have to bind
the LOV control with RowsetInfo Insted of
LOVrowsetInfo .remember the row setproducer
is same that is bind sith your DAC control.
null

URGENT - Form with LOV - Query Fails

Hi All,
I've a portal form, with about 10 fields and about 06 of them are combo boxes (attached to dynamic LOVs).
I'm trying to perform a query using the ID and leaving all other fields blank, but no result is displayed. I am sure that the record for that ID exist in the database table.
Can someone please suggest what should I do to be able to perform query in form with LOVs.
Thanks in advance.

Hi Jatinder
I'm happy because you are apparently on the right way with 'your duplicate form'!
"adjust the empty values" means to make sure, that the value of the simple empty field (in the duplicate form) is the same as the value of the corresponding LOV based combo box field (in the original form).
Maybe this sounds easy, but in the matter of fact it isn't. Why?
Look carefully at the following sample:
You have a dynamic LOV based on the number column 'category' in your 'table_1'.
So the basic part of the LOVs query looks like this:
select distinct category from table_1;
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Furthermore you have to be sure that the default LOV's value is the 'any value' one.
Your complete LOVs query then looks like this:
select distinct category from table_1
union
select to_number(null) from dual
order by category desc;
/* 'desc' for 'descending' ensures the NULL value to be on the top of the combo box */
Now as you know how it works for number columns simply use the analog logic for character columns with to_char(null) and for date columns with to_date(null).
That's it.
Thanks
Peter

Problems with LOVs

I'm working with ADF 11g, and I have a problem when i work with LOVs.
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When i execute my page i have problems editing and creating a register, as only the first LOV it's available. The other LOVs don't open when I select them.
I'm working with more pages with some LOVs in each of them and they work fine. I only found problems while working with pages that have composite primary keys.
Could you please tell me a way to solve this?
Thank you in advance.

In the EO and VO I've checked the option "While New" in the four fields of primary key.
If I make AM Tester, works properly. However, in jspx page I get an error when trying to open the second LOV.
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Help with LOVs 2

Sorry for the "repetition"
I opened this thread
Help with LOVs
but I forgot to ask another question that is related,
once I call up my LOV, how can I use the value that I select from that LOV and use it to display specific info? like getting the ID to use it in a select statement??
thanks In Advance!!

In order of price here are some suggestions:
Seashore (free)
Graphic Coverter ($45 approx)
Acorn ($50 approx)
Photoshop Elements ($75 approx)
There are many, many other options. Search on MacUpdate.
Regards
TD

How to Populate a List item with LOV'S

How to Populate a list of items with Lov's
and then how to dynamically change the Values of one LIST Item
Based on the Value of anothe List item

976798 wrote:
--Hello..I want to ask that How to bind a list item with table values? this below code does not populate items from database to list item.Pls any body give me solution.
declare
     group_id RecordGroup;
     list_id Item:=Find_Item('LST_CLASS');
     status number;
begin
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     status:=Populate_Group('Answer_List');
     message(to_char(status));
     Populate_List(list_id,group_id);
     end;Welcome to the Oracle Forums. Please take a few minutes to review the following:
<ul>
<li>Oracle Forums FAQ
<li>Before posting on this forum please read
<li>10 Commandments for the OTN Forums Member
<li>How to ask questions the smart way
</ul>
Following these simple guidelines will ensure you have a positive experience in any forum; not just this one!
Check this link: How to Dynamically Populate a Pop List ?
Hope this helps
Hamid
If someone's response is helpful or correct, please mark it accordingly.

Input Text with LOV in table, the search list will be limited with 25 row?

Hi, experts
I got a strange problem with JDev 11.1.1.5.0, I created Input Text with LOV in Data View for one attribute with default setting, the LOV worked fine when I drop the DC with 'ADF form'; but when I drop it with ADF Table, the search function will just show 25 rows, I can see it try to fetch data when scroll down just like form, but then nothing happened, only the first 25 rows will be show without any error log.
Any special configuration needed for LOV in table? or a bug in LOV?
many thanks.

You can change the range size on the VO which you use for the LOV. If you only want to change it for the VO the lov uses, select the VO in question in the application module data model and clic edit. There you enter -1 fro raneg size.
If you want to change it globaly for this VO you open the VO and select the Tuning section and check 'all at once' which should get you all rows. Be careful that the VO don't return too much rows. A LOV wiht more then 50 rows is too big. In this case you may choose an other component.
Timo

Working with LOV

Hi all.
hoe to deal with LOv after assigning it to a text field??, let's say that the LOV will retrieve supplier numbers and names into the text field (supplier_no),
Then is there a trigger to write? or that is enough\????
Thank u very much,,
Tasneem

Hi Tasneem
is there a trigger to write? or that is enough\????KEY-LISTVAL,POST-CHANGE, WHEN-VALIDATE-ITEM, POST-TEXT-ITEM, etc. triggers
u can look for it in nthe on-line help of forms or use...
DECLARE
v_return boolean;
BEGIN
v_return := show_lov('ur_lov_name');
END;or u can writye this code in WHEN-BUTTON-PRESSED Trigger...
Hope this helps...
Regards,
Amatu Allah

ExecuteWithParams with LOV

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