How to set dynamic WHERE clause to VO from backingBean?

Hi,
Can any one let me know the best way to add the dynamic WHERE clause in to VO query.
I have created AM (with AMImpl.java) & VO (with VOImpl.java & VORowImpl.java) in my model project. I suppose to set the WHERE condition at runtime while the user click the search button. I am handling the user button click at UI layer backingBean. From the backing bean I could able to get the objct of the VO and set the where clause by below code.
        ValueExpression valueExp = elFactory.createValueExpression(elContext, "#{bindings.UserSearchVO1Iterator}", Object.class);
        DCIteratorBinding dcIter = (DCIteratorBinding)valueExp.getValue(elContext);
        ViewObject userSearchVO = dcIter.getViewObject();
        userSearchVO.setWhereClause("lower(usr_login) LIKE ':1' and usr_udf_suid like ':2' ");
        userSearchVO.executeQuery();But as I fear this is not the right way to do it. So I am creating the cutom method inside the VOImpl.java and triggring that method by creating one more cutom method in AMImpl.java. But I dont know how to invoke this AM method from backingBean.
AMImpl method
public void initDetails()
        UserSearchVOImpl vo = getUserSearchVO1();
        vo.initQuery();
VOImpl method
    public void initQuery()
        setWhereClause("lower(usr_login) LIKE 'a%' and usr_udf_suid like '%1144%'");
        executeQuery();
    }Can any one guide me which is the best way to set the where clause to VO? How to call the AM method from backingBean?
Thanks
kln

i am new to oracle 11g i writing a stored procedure in which i have made use of case in where clause to pass my parameter value v_toStoreID
i have googled a lot regarding that i found that to use case in where clause it should be like this
where
case column_value
when 0
then value1
else
value2
end
this my query
SELECT ITMID as ItemId,
NVL(OrderDtl.PackageID, 0) PackageId,
OrderDtl.OrdDtlID,
(CASE NVL(OrderDtl.PackageID, 0)
WHEN 0
THEN 1
ELSE 0
END) as PackageFlag,
ivitem.Code ItemCode,
ivitem.ITMNAME AS itemName,
IvPatientIssueMst.IssueNo Issue_No,
to_char(Issuedate, 'DD/MM/YYYY') IssueDate,
OrderDtl.OrdQty,
NVL(OrderDtl.AllocationID, 0) Package,
OrderDtl.ServiceAmount MRP
FROM IvPatientIssueMst
JOIN OrderMst
ON IvPatientIssueMst.OrderId = OrderMst.OrdId
JOIN OrderDtl
ON OrderDtl.OrdID = OrderMst.OrdId
JOIN ivitem
ON ivitem.ITMID = OrderDtl.DrugId
LEFT JOIN IVPatientIndentMst
ON IVPatientIndentMst.IndentID = IvPatientIssueMst.IndentId
WHERE OrderMst.OrdVisitID = 395899
AND
*(CASE IvPatientIssueMst.StoreId*
when NVL(IvPatientIssueMst.StoreId, 0)=0
THEN v_toStoreID
ELSE IVPatientIndentMst.ToStoreID
END)
ORDER BY ivitem.ITMNAME;
it is not working please someone help

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How to set dynamic where clause in ADF?

Hi,
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Thanks,
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You'll create a service method in your AM that will use the setWhereClause method of a viewobject.
Then you'll expose it as a client method.
Then you'll drag it from your data-control onto a button in your JSF page that will call your page for the query.
More about service methods here:
http://download.oracle.com/docs/html/B25947_01/bcservices003.htm#sm0206
http://download.oracle.com/docs/html/B25947_01/bcquerying008.htm#sthref286

How to set the where clause of a value set on the basis of a form field

I am using a DFF(Descriptive FlexField), which needs to display the value of a certain column(say columnA) on the basis of the value of another column(say columnB).
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Edited by: 981615 on Jan 14, 2013 12:48 AM
Edited by: 981615 on Jan 14, 2013 12:48 AM

Just have a look over these two statements if it solves your problem
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How to create dynamic where clause instead of pragmatically

Hi,
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So I created a sql query based view object with 2 bind variables (which are input params) & 2 view criteria (to create dynamically where clause) and then drag on to the page by ExecuteWithParams operation from data controls but couldnt work.
If anyone have idea to build dynamically please let me know.
Amar

User need to enter either of the field value and click search button to see his data.User need to enter either of the field value and click search button to see his data.
Hi Amar,
Is your requirement, creating a query panel with table??
Drag and drop the view criteria(Application Navigator>DataControls> AppModule >NamedCriteria> ViewCriteriaName ) onto the page.
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Edited by: Harsha049 on Nov 28, 2012 3:51 PM

Setting dynamic WHERE clause in VO

Hi all,
I am using JDev 11.1.2.2.0. Example Scenario : In my application, In the first page, I am choosing a location value. In the second page I have a model based VO. The where clause of the query has to be set dynamically, based on the location what I am choosing in the first page. How to achieve this?
Regards,
Infy

First make sure you have defined your method in the AM Impl class.
Here is a post from a few topics back :
umesh.agarwal wrote:
My question is how can I create a method that will return this information and use it from the ViewController ?For this:
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2) Exposed the method through Client Interface.
See this for more details:
http://docs.oracle.com/cd/E12839_01/web.1111/b31974/bcservices.htm#sm0212
Then
3) Define a method action binding in your jspx page(pagedef) where you want to access this method.
http://docs.oracle.com/cd/E15523_01/web.1111/b31974/web_adv.htm#ADFFD20984
4) Use the below code to call the AM method from View controller
DCBindingContainer bindings =
(DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
OperationBinding operationBinding =
bindings.getOperationBinding("<method_name_in_AM>");
if (operationBinding != null) {
operationBinding.execute();
Object obj = operationBinding.getResult(); //obj will contain the value returned from your AM method
Step 4) is when you want to call that method from a bean.
You can also drag that method (from your data control) on your page. JDev will then ask if you want to make a form of it.
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How to include dynamic where clause

hai i want to write the dyanamic where clause to my select statments can any one suggest me how to do it
regards
afzak

Hi Afzal,
REPORT demo_select_dynamic_conditions .
DATA: cond(72) TYPE c,
itab LIKE TABLE OF cond.
PARAMETERS: city1(10) TYPE c, city2(10) TYPE c.
DATA wa TYPE spfli-cityfrom.
CONCATENATE 'CITYFROM = ''' city1 '''' INTO cond.
APPEND cond TO itab.
CONCATENATE 'OR CITYFROM = ''' city2 '''' INTO cond.
APPEND cond TO itab.
CONCATENATE 'OR CITYFROM = ''' 'BERLIN' '''' INTO cond.
APPEND cond TO itab.
LOOP AT itab INTO cond.
WRITE cond.
ENDLOOP.
SKIP.
SELECT cityfrom
INTO wa
FROM spfli
WHERE (itab).
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ENDSELECT.
Thanks & Regards,
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How to set dynamic IN clause in VO Query

Hi ADFExperts,
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Oracle db doesn't support construction: where something in :bind_var.
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[code]
select *
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[/code]
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Dynamic Where Clause in SQR

How to construct dynamic WHERE clause in our sqr programming ?
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Begin-Procedure Main
if $prcs_process_instance=' '
do askvalues
else
do getvalues
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input $frmdate 'Enter From Id' type=text format=number !Mandatory Parameter
input $todate 'Enter To Id' type=text format=number !Mandatory Parameter
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Begin-Select
FROMDATE
THRUDATE
SQR_LOCATION
let $frmdate=&FROMDATE
let $todate=&THRUDATE
let $loc=&SQR_LOCATION
let where=-------------------------- ?
FROM
PS_PROCESS_TBL WHERE OPRID=$PRCS_OPRID AND RUN_CNTL_ID=$PRCS_RUN_CNTL_ID
End-Select
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Begin-Procedure selectall
BEGIN-SELECT
SQR_EMPLID
SQR_FNAME
SQR_LNAME
SALARY
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END-SELECT
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SQR will understand Where Clause as dynamic, when you include it in Square Brackets []
In your case, since fromdate & thrudate are mandatory values, I would code like this
let $frmdate=&FROMDATE
let $todate=&THRUDATE
let $loc=&SQR_LOCATION
let $Where_Clause = 'SQREMPID BETWEEN' || ' ' || $frmdate || ' ' || 'AND' || ' ' ||$todate
if $loc != ''
let $Where_Clause = $Where_Clause || ' '|| 'AND' || ' ' || 'LOCATION = ' || $loc
end-if
Now you can use this Dynamic Where Clause in which procedure you want. Only thing is you need to encode the where clause with brackets([$Where_Clause])
Edited by: 935179 on Sep 6, 2012 2:11 AM

Dynamic where clause based on Page Items

I need an example of how to build a where clause with values from page items.
I want to do something like the following but do not know the syntax:
sql_string := ' where lab.ceventno is not null and lab.cts_no_show is null ';
if :P1_RECID is not null then
sql_string := sql_string || ' and lab.recid = ' || :P1_RECID;
end if;
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if :P1_CAS_TYPE = 1 then
sql_string := ' and upper(lab.cas_no) = ' || :P1_CAS_NO;
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end if;
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I put this in a process that I want to pass to Page 2 when search button is pushed. I'm not sure what I'm doing wrong, but this doesn't seem to work.
When I print out :P2_WHERE, I only get the first line
'where lab.ceventno is not null and lab.cts_no_show is null '
Any help would be much appreciaed
Thanks
Pam

Pam - We need more details about exactly what you are doing, e.g., how are you going to dynamically execute that SQL, what items are on page 1 that will be submitted (all search criteria), what happens on page 2, etc.
But here are a few points:
1. when building a query for dynamic execution, put the bind variables like ":P1_RECID" into the generated SQL, e.g., do this:
sql_string := 'select ename from emp where empno = :P1_EMPNO';
not
sql_string:= 'select ename from emp where empno ='||:P1_EMPNO;They may appear to give you the same results but the first introduces non-reusable SQL into the shared pool (this is bad).
2. When code runs that references user-entered item values on the current page, like "if :P1_CAS_NO is not null", you have to make sure those items have been submitted (as with a page-submitting button) before you reference them. So if the user enters search criteria into form fields, then submits the page, then you reference those items in the SQL-building process, you'll be okay.
3. Watch for errors like your line: "sql_string := ' and upper(lab.cas_no) = ' || :P1_CAS_NO;" which you may have intended to be "sql_string := sql_string||' and upper(lab.cas_no) = ' || :P1_CAS_NO;".
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JSP, DataWebBean: How to dynamically set the where clause of query and display record

Hi,
I am reposting this question as per suggestions made by Mr. Dwight.
I have used ViewCurrentRecord web bean to display records from EMP table. I have to use the Dept_Id_FK from the current
record of the EMP table to display corresponding records of Dept table. I have a view object called DeptView in my Business
Components which selects all the records from the Dept table.
How do I get the value of Dept_Id_FK and use it to display the required records of the Dept table?
I tried to declare a variable and get the value of Dept_Id_FK but it did not work. My code is as follows:
<%! String m_DeptId = null; %>
<jsp:useBean id="RowViewer" class="oracle.jbo.html.databeans.ViewCurrentRecord" scope="request">
<%
RowViewer.initialize(pageContext, "EMPApp_EMP_EMPAppModule.EMPView1");
RowViewer.setReleaseApplicationResources(false);
RowViewer.getRowSet().next();
m_DeptId = (String)RowViewer.getRowSet().getCurrentRow().getAttribute("DeptIdFk");
%>
</jsp:useBean>
Thanks.
null

First of all, Thank you very much for making use of the new topic format. It is very much appreciated.
As for your question, I think there are several different ways to accomplish what I think you want to do.
1. Create a view object that includes both Emp and Dept entities and join them there. In this case, your query would look something like this:
Select e.empno,e.name,...,d.dname,d.loc from emp e, dept d
where e.deptno = d.deptno
You should be able to create a JSP off of this view object that contains both the employee and department information. In this case, BC4J takes care of the foreign key to primary key coordination.
2. In order to set a dynamic where clause for a view, you need to do the following in your usebean tag:
rsn.initialize(application,session, request,response,out,"DeptView");
rsn.getRowSet().getViewObject().setWhereClause("deptno=" | | m_DeptId);
rsn.getRowSet().getViewObject().executeQuery();
rsn.getRowSet().first();
You will need to do this in a separate usebean tag from the EmpView, since the usebean can only initialize one view object.
In other words, you would have your ViewCurrentRecord bean tag for the EmpView, then a separate one for the DeptView where you use the above code to set the where clause to display just the information for the department you want.
Another option, but one I'm not sure would work as well, is to create a master-detail JSP to do this for you. Usually a master-detail is a one-to-many (one department to many employees). Your request appears to be the reverse, but might still be doable using the same mechanism.
You set up relationships between views in your BC4J project using View Links. If you used the BC4J project wizard and created default views, some of these links may have been created for you. They are created when BC4J detects a foreign key to primary key relationship in the database.
You can create your own View Links using the View Link wizard. Select your BC4J project node and choose Create View Link... from the context menu. You will be asked to select a source view (Emp), and a target view (Dept), then select the attribute in each view that related the two of them (deptno).
Next, you need to reflect this new relationship setting in your application module. Select your app module and choose Edit from the context menu. On the data model page, select the EmpView node in the Selected list. Now select the DeptView node in the available list and shuttle it over. You should see DeptView1 via yourlink appear indented under the EmpView node. Save and rebuild your BC4J project to reflect the changes.
In your JSP project, you can now have the wizard create a master-detail form for you based on DeptView1.
Let me know if the above answers your question, or if I have misunderstood what it is you wanted to do.
null

How to add a dynamic where clause for a sql based VO with group by query?

Hi,
Here is my case, I have a sql query based VO with the query like "select status, count(*) StatusCount from my_table group by status". Now I used the following java code trying to dynamically add the where clause to my VO to filter the rows based the type attribute in my DB table.
vo.setWhereClause("type='MyType1' ");
vo.executeQuery();
Then I got the sql syntax error. Looks like the ADF has added the where clause to the end of my sql so my sql becomes "select status, count(*) StatusCount from my_table group by status where type='MyType1' ". But what I expected was the correct syntax "select status, count(*) StatusCount from my_table where type='MyType1' group by status".
Does anyone know if this is an ADF bug? Or is there any other way to achieve my goal?
Thanks,
Chunyang
Edited by: Chunyang on Dec 13, 2012 9:09 PM

Hi,
When you use setWhereClause on the VO, it is applied on top of the VO query. I.e, assume your VO has the following query.
select empno, ename from empNow, if you apply the where clause programatically, only the two attributes that you are using in the select statement could be used. I.e
select * from (select empno, ename from emp) where ename='KING' - VALID
select * from (select empno, ename from emp) where deptno=10 - INVALID (because the inner query - the one you've defined as query for your vo does not have deptno attribute selected)If you would need to set a dynamic where clause, you need to make them available in your select statement / use bind variables.
-Arun

Dynamically set ViewObject where clause dynamically from Java bean

I have a requirement to display all of the records from a table when the JSP is first brought up, so my View Object looks like this:
"select emp_name from emp"
Then the users wants to ability to pass paramters to that View Object to refine the list so from by Java class I tried to do this:
ViewObject vo = cpd.findViewObject("EmpViewObject");
vo.setWhereClause("empName = :1");
vo.setWhereClauseParam(1,varEmpName);
vo.executeQuery();
But I am getting JBO errors and I'm not sure what I'm doing wrong. Can anyone offer a hint as to how I can do this?

this is exactly how the code is done -
1. emp_name in the View Object
2. emp_name in the where clause
The two are identical. I have tried many variations of this - any time I set the where clause from my bean I get an error.
When I take the SQL stmnt and run it in TOAD it returns expected rows when I run it in the SQL worksheet in JDev it gives an invalid Identifier - but if I hard code the where clause in the View Object it returns the same results as TOAD.

How to create VO with multiple dynamic where clauses on select with UNION?

I am trying to implement the View Object for the UNION query that looks like this:
     select a,b,c...
          from t1,t2,...
          where dynamic_where_clause1
     union all
     select a,b,c,...
          from t11,t12, ...
          where dynamic_where_clause2
There are up to 60 input parameters that are used to generate dynamic where clauses. They are actually created by calling PL SQL function.
So far, I was not able to assign both where clauses to the view object. Is there a workable solution for this problem, besides resorting to programmatic View Object?
I understand that recommended way with UNIONs is to wrap both queries into a parent select:
select * from (
     select a,b,c...
          from t1,t2,...
          where ... -- table relationship joints
     union all
     select a,b,c,...
          from t11,t12, ...
          where ... -- table relationship joints
) QRSLT
     where dynamic_where_clause
Unfortunately this approach doesn't work here, since individual selects are producing unmanageable amount of data and resulting query takes forever to complete.

I afraid I would not have any real benefits from using VO if I replace the entire query with every request. Actually, the performance may suffer.
I solved the problem by creating a POJO Data Control and invoking the custom select query from java. Not sure if it is the best approach to the problem, but implementation time is limited and it works.
Actually, this is not the first time I see the need to implement VO with complicated SQL like select with unions and dynamic pieces. It would be nice to find a solution and not resort to workarounds.
Edited by: viksicom on Aug 2, 2012 8:48 AM

Dynamic Where Clause - How To?

I need help building a dynamic where clause in 1.6
I have three fields:
p1_col_where which is a static list of 8 columns
p1_condition which is a static list of the 9 possible conditions(=,<,>...)
p1_condition_value is a text field that the user enters the literal they want to use
The lov select I thought would be:
SELECT Description, positem
FROM v_item
WHERE :P1_COL_WHERE :P1_CONDITION :P1_CONDITION_VALUE
I was hoping that this would be resolved to: WHERE item = 123
but of course I get a big NASTY error.
Can someone help me out?
Thanks,
Joe

Mike,
Thanks for the help.
There's a problem in the docs for creating this popup on step 5. The docs say:
Step 5 - Add the LOV report to the popup page
select ename, job, sal , 'placeholder' the_link
from emp
where ename like '%'||:P2_ENAME||'%'
and (job = :P2_JOB or :P2_JOB is null)
and (sal = :P2_SAL or :P2_SAL is null)
Note that the last column in this query is just a placeholder. once the region is created, turn that placeholder into a link by doing the following:
1.     Navigate to the Page Definition for page 2
2.     Next to the name of the report region created in step 5, Click Q
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4.     In the "Link Text" field enter the string "select"
5.     In the URL field enter: javascript:passBack('#ENAME#','#JOB#','#SAL#');
6.     Click the "Apply Changes" button
The problem is in number 5. There is NO URL field to enter that code. Where does it go?
Also, your alternative method:
IF :P1_COL_WHERE is null then
RETURN 'SELECT Description, positem FROM v_item';
ELSE
RETURN 'SELECT Description, positem FROM v_item '||
' WHERE '||:P1_COL_WHERE||' '||:P1_CONDITION||' '||:P1_CONDITION_VALUE;
END IF;
With a 'GO' button is the method that I was trying. That's what gave me the error when the page loaded.
Any assistance is greatly appreciated.
Thanks,
Joe

Pagination after executequery with a dynamic where clause

Hi all,
I have a problem with pagination after setting a where clause dynamically and performing an executequery in ViewObjectImpl.java.
As a result of this, the amount of records are decreased returned by the viewobject, however the pagination is not changed. It still reflects the previous amount. It changes only if you have selected the last range of the changed recordset
Does anybody know how to get the pagination to refect the correct amount of the updated recordset of the viewobject?
Jdeveloper version 10.1.3.4 / Jheadstart 10.1.3.3.81
Thanks in advance, Erwin

Hi,
I would not add this to the VO query. Instead I would create a View Criteria that uses a bind variable. Then in the Application Module Data Model, you select the VO instance and choose edit (button on top) to permanently associate the view criteria)
Advantages of this approach
- The VO definition can be used elsewhere without the restriction
- the bind variable is not mandatory and yu can set it such that if no value is provided a full query is executed
Frank

How to set dynamic WHERE clause to VO from backingBean?

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