Implementing LOV based reports in ADF

I'm a newbie to ADF and need to implement a ADF page where a change in LOV value will result in the following (without submit button) ...
first case: refresh existing report (single report) which matches the new value.
second case: show multiple reports based on LOV value. for certain LOV values, one report is shown, other LOV value, two reports should be shown. How to manage hide/show with different LOV values?
Third case: Implementing a hierarchy report based on LOV value as connect by value in the query. How to implement hierarchica queries in ADF?.
any ideas/pointers to examples are appreciated.
Regards,
Surya

Hi,
a LOV can be set to autosubmit its value change. Then in a ValueChangeListener that you configure on the LOV component pointing to a managed bean you can handle the selection change. You have access to the current selected value, which would e.g. allow you to query the business service for the reports to display. In addition calling AdfFacesContext.getCurrentInstance().addPartialTarget(ParentContainerThatDisplaysTheReports); you can partially refresh the are that contains the displayed reports.
Have a look here: http://download.oracle.com/docs/cd/E15523_01/web.1111/b31973/toc.htm
Look for ValueChange event handling and Partial Refresh
Frank

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Dynamic LOV based on report column

HI,
I've a standard report with Two columns. Column1 is standard Report Column and Column 2 is a LOV based on an SQL Query.
Now I need to filter the LOV (add a where clause) based on the value in the column1.
For example, consider Column1 as "country" and column2 as "state". so the in column2(LOV), user should see only the list of states belongs to the corresponding country(Column1)
Please note that the report is based on an SQL query
Any clue on how to do this.
I'm using APEX4.1.
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ADF BC selectOneChoice- populating an LOV based on another LOV

scenario:
country:country_id, country_nme ViewObj: CityVO
city: city_id, country_id, country_nme ViewObj:CountryVO
cc: cc_id, country_id(FK), city_id(FK) ViewObj:CCVO
i have got two combo boxes(selectOneChoice) displaying
coutntry LOV which i created by selecting
base data source:CCVO, list datasource:countryVO
mapped attribute:country_id, display attrib:country_nme
similarly,city LOV which i created by selecting
base data source:CCVO, list datasource:cityVO
mapped attribute:city_id, display attrib:city_nme
objective:
now i need to populate the city LOV based on the country selected.
i added valueChangeListener on countryLOV so that it will get the country_id and execute view criteria on cityVO
problem:
problem is that i can not get country_id value! i explored methods on the selectOneChoice variable accessor and ValueChangeListerner component but no luck!
as i am displaying the country_nme so i have to use DCIteratorBinding to actually reach to the country_id value.
this seems to be a tedious way! plus if country selected again it gives nullPointerException on 3rd line:
DCBindingContainer dcBc = (DCBindingContainer)getBindings();
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Hi
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What's the best way to implement LOVs in OBIEE?

Hi All,
Does anyone have any good ideas on how to go about implementing LOVs in OBIEE?
At the moment we have created reports and dashboard prompts from the relevant SQL views which report off an Oracle EBS database. Our problem is that when we create a dashboard prompt from this view, that the generation of the LOV will take an extremely long time as it would need to run the whole query and do a distinct on the relevant column, before the LOVs are returned to the user.
I'd like to find out what possible solutions exist to implement and manage LOVs in OBIEE, and which is the preferred and recommended approach?
Thanks,
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Hi Lance,
I can think about two things which are indexing and using a dimensional model rather than OLTP.
Are the views based on huge transaction tables? Are the LOVs based on transactional dates.
Thanks,
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Today our application uses the Crystal Reports RDC. In the last
ten years we have made good experience with Crystal Reports.
In the next few months we want to migrate our application to
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Because the reports offer a great reuse-potential, we would like
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Hi Ted,
thanks for the fast response.
Is there another "datasource option" with better performance than POJO?
In the upcoming JAVA-version of our application we would like to "feed"
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Creating a dynamic lov based on a column

Hi,
I want to create a dynamic lov based on a column in a database-table.
Eg. the query
'select code, description from code_table'
is the contents of the column 'lov_query' in the table 'parameters'.
For every parameter there can be a different lov-query, but the result is always
two columns (code and description, number and name, etc.), exactly what you need to use in a lov.
I've written a (dbms_sql) function that takes the parameter-id and returns the lov_query.
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(2000);
begin
DBMS_SQL.PARSE
(cur, 'select pmr.lov_query from parameters pmr where pmr.ID ' || ' = 'L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 2000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0
THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
But now I'm stuck on how to pass on this statement in HTMLDB
as an dynamic lov, I don't seem to be able to execute this statement
into the two display and return columns. Any ideas?

Hello again,
This lov is on an updatable report-column where the user has to make a choice from an non-named, popup and query-based lov. In the lov-query box I have just put:
"return get_pmr_lov(:p41_param_id)" (without the quotes ;-)
Here's my latest version plus an alternative, which both seem to work fine:
create or replace function "GET_PMR_LOV"
(pmr_id in NUMBER)
return VARCHAR2
is
cur INTEGER := DBMS_SQL.OPEN_CURSOR;
fdbk INTEGER;
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
begin
DBMS_SQL.PARSE (cur, 'select pmr.lov_query from paramaters pmr where pmr.ID ' || '= :L_PMR_ID', DBMS_SQL.NATIVE);
DBMS_SQL.BIND_VARIABLE (cur, 'L_PMR_ID', l_pmr_id);
DBMS_SQL.DEFINE_COLUMN (cur, 1, l_stmnt, 1000);
fdbk := DBMS_SQL.EXECUTE (cur);
fdbk := DBMS_SQL.FETCH_ROWS (cur);
IF fdbk > 0 THEN
DBMS_SQL.COLUMN_VALUE (cur, 1, l_stmnt);
return (l_stmnt);
ELSE
return null;
END IF;
DBMS_SQL.CLOSE_CURSOR (cur);
END;
create or replace function "GET_PMR_LOV2"
(pmr_id in NUMBER)
return VARCHAR2
is
l_pmr_id NUMBER(9) := pmr_id;
l_stmnt VARCHAR2(1000);
BEGIN
EXECUTE IMMEDIATE 'select pmr.lov_query from parameters pmr where pmr.ID = :1'
INTO l_stmnt USING l_pmr_id;
return l_stmnt;
END;
The error-message remains the same, unable to bind :p41_param_id !

How to change the values in an LOV based on values selected in another LOV

Hi,
I have a requirement in ADF where there are two LOVs. Based on the values that I select in the 1st LOV, the values in the second LOV should change dynamically.
Also, the 1st LOV accepts 3 values, for every value I select, a different query is executed to populate the 2nd LOV.
I have a rough thought that I can use 3 different read only view objects containing these 3 queries. And based on the value I select in the 1st LOV I can execute the corresponding View object from the backing bean. But my doubt is how to link the results of that query that is executed to populate the 2nd LOV.
Thanks in advance.
Edited by: 886591 on Sep 21, 2011 4:48 AM

Hi Brisk,
Thanks for your reply.
The link that you have provided explains how to disable and enable the other LOVs based on a parent LOV. But in my case there are two Select One Choice fields i.e. the dropdowns (sorry that I addressed it as LOV in my previous post which might be confusing). There are 3 static values in the parent dropdown where each of them are associated with a different query. for e.g if the three values in the drop down are A, B and C; if i select A, then query associated to A should be executed ; if i select B, then query associated to B should be executed and if I select C, query associated to C should be executed. Then the output attribute of that query should be populated in the child dropdown.
Please let me know about the solutions to this.
Thanks,
Kavitha

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Here content of one page is pulled to the current page. It works fine. Pagination is also working exactly as the Apex reports. But I was thinking of something different, not pulling the content from other page. I have done it myself as follows.
1. Take an HTML region called Parameter
2. Take a select list in the parameter region with LOV query
name : P2_DEPTNO
LOV : Select dname d,deptno r
from dept
3.Take an HTML region
Source : <div id=ajx></div>
4. Create an Application Item called F103_DEPTNO
5. Create an Application Process
Name : getEmpTable
Source:
declare
v_deptno number(3);
begin
OWA_UTIL.mime_header ('text/xml', FALSE);
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HTP.p ('Pragma: no-cache');
OWA_UTIL.http_header_close;
HTP.prn ('<table>');
HTP.prn ('<tr>');
htp.prn('<th>Employee Number</th>');
htp.prn('<th>Employee Name</th>');
htp.prn('<th>Salary</th>');
htp.prn('<th>Department</th>');
htp.prn('<th>Job</th>');
htp.prn('<th>Hiredate</th>');
HTP.prn ('</tr>');
foR R in (select empno,ename,sal,deptno,job,hiredate from emp where deptno= :F103_DEPTNO )
LOOP
htp.prn('<tr>');
htp.prn('<td>'||r.empno||'</td>');
htp.prn('<td>'||r.ename||'</td>');
htp.prn('<td>'||r.sal||'</td>');
htp.prn('<td>'||r.deptno||'</td>');
htp.prn('<td>'||r.job||'</td>');
htp.prn('<td>'||r.hiredate||'</td>');
htp.prn('</tr>');
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HTP.prn ('</table>');
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Source:
<script language = "JavaScript" type="text/javascript">
function GetEmployees()
var get = new htmldb_Get(null,&APP_ID.,'APPLICATION_PROCESS=getEmpTable',0);
get.add('F103_DEPTNO',html_GetElement('P2_DEPTNO').value);
gReturn = get.get();
document.getElementById('ajx').innerHTML = gReturn;
get = null;
</script>
7. Go to edit page item of P2_DEPTNO and in HTML Form Element Attributes write onchange="GetEmployees()"
8. Run and test.
Ajax based report works fine.
In the link specified above pagination works fine.
In my example very few records will appear but in case there are a lot of records appear then it is a must to manage it with pagination, letting only a few records to appear in each page. But in my example I have no idea how to manage pagination. Need help from the experts. Please notify..
Regards
Hasan Al Mamun
Programmer
Bangladesh Bank
Dhaka, Bangladesh
Edited by: hasan_al_mamun on Jan 19, 2011 10:58 AM
Edited by: hasan_al_mamun on Jan 19, 2011 11:20 AM
Edited by: hasan_al_mamun on Jan 19, 2011 11:24 AM

Hi,
You need to work with ROWNUM of result set. Create two hidden items, one for record_start_rownum and other for record_end_rownum. You need to add where clause to your SELECT query in Application process. Then your query will look like
select *
from ( select a.*, rownum r
from ( select empno,ename,sal,deptno,job,hiredate from emp where deptno= :F103_DEPTNO ) a
where rownum < :P1_ record_start_rownum )
where r > :P1_record_end_rownumYou may find following asktom link interesting..
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:76812348057
Regards,
Hari

One select list with multiple LOV's (LOV based on how page was called)

APEX 4.0.2
I've a DML form page from a report on which I need a single select list item to have a differing LOV based on how the form page was called.
The calling page (report), contains an edit link column and a create button. Depending on which is selected, I wish the LOV for my select list item to change. The idea behind this is that if someone creates a new entry, I want to constrain the select list to a subset of rows of a table query populating the LOV. On the other hand, if an existing item is edited, I want the select list LOV containing all rows of a table query populating the LOV.
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Paul

Hello Patrick!
Thanks for responding - Love your captcha plugin!
Anyway, these are the two dynamic LOV's. The first I have in play right now (when creating new records). I need to have the other for existing record modifications.
LOV #1
select stock_no d, stock_no r
from   [email protected]
where status like '%Awaiting Transfer%'
or     status like '%On Hold%'
order by 1LOV #2
select stock_no d, stock_no r
from   [email protected]
order by 1As I mentioned, I attempted to use plsql logic in the query to trigger one or the other based on a value set when the user either clicked an edit link or a create button but couldn't get the dynamic LOV to commit with that extra code in it.
Thanks!
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Second LOV based on First LOV in Oracle APEX tabular Form

Hi,
I had created a tabular form in which I am having two LOV's. This form is based on a query.
I had created a javascript function which internally calls AJAX and populates the second LOV based on the value selected in first LOV when onchange.
But the issue is, when the user recalls this APEX page to view the details or edit the details, the second LOV shows all the values instead of showing only the values related to first LOV.
In the second LOV query I am trying to write the below query.
select function_name fn
,function_code_id fci
from catering_function_codes
where function_type_id = NVL(#FUNCTION_TYPE_ID#,function_type_id)
order by to_number(function_code_id)
in which #FUNCTION_TYPE_ID# is the value of first LOV. But I am getting the below error.
report error:
ORA-20001: Error fetching column value: ORA-06550: line 1, column 187:
PL/SQL: ORA-00911: invalid character
ORA-06550: line 1, column 7:
PL/SQL: SQL Statement ignored
How can you refer to the Second LOV the value of First LOV in a report based tabular form?
Kindly let me know if you do not understand the issue.
Please help me in this issue.
Thank you
Regards
Dev

Hi Roel,
Thank you for the quick reply.
I used the query as given by you. This time it is not giving any error but showing all the values in the second LOV irrespective of what ever value is present in the first LOV
This is an apex tabular form which is generated by apex based on a query. The controls will be dynamically generated by APEX for each row. How can we hard code the control name to :P99_FUNCTION_TYPE_ID?
Please help me in this issue. Thank you
Regards
Dev

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How Do i Call An xml publissher and a jsper report from ADF pages

Hi All
How Do i Call An xml publissher and a jsper report from ADF pages

I used the above links to create XML's and from there a formatted report of data from the database. I accomplish this by connecting to the database inside the XMLPublisher.java file. I also have my query hard-coded inside the DataTemplate.xml to extract the info from the database. This limits my ability on what the user can accomplish with the system.
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Implementing LOV based reports in ADF

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