Bind vars and LOVs on same JSP -incompatible?

I have managed to get a project working using bind variables, and another project working that has LOV. (Both using ADF,struts,JSP)
However, when I try and use bind variables for one attribute and an LOV for a different attribute on the same JSP I get the error msg:
No getter method available for property x for bean name org.apache.struts.taglib.html.BEAN
at org.apache.struts.taglib.SelectTag.calculateMathcValues(SelectTag.java:327)
Is it not possible to have bind vars and LOVs on the same page or have I just messed sthg up?(more likely...) Seems weird that I can get them working separately. Any help appreciated... not knowing Java I'm rather at my wits end...!

Hi kian chye,
unfortunately it is not possible to use the page item bind variable in shared components for more than one page.
If you want to get it to work you have to use application item in the LOV (shared components).
Then on change of the first selection (region) you should write the new selection (region) into the application item (maybe with a javascript code). Then the LOV of the city should work.
For the javascript code see an example here:
http://apex.oracle.com/pls/otn/f?p=31517:119
Regards,
Denise
www.appsassociates.de

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Hello,
We have some JSPs which do a lot of processing and is 'alive' for a long period
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Hi Oleg,
Could you tell us how you find out that there is an additional request?
Regards,
Slava Imeshev
"Oleg" <[email protected]> wrote in message
news:[email protected]...
>
Thank you Varad and Slava,
We don't use plagin for iplanet,
but our problem is very similar:
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Where I can configure JSP timeout to fix this problem?
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Oleg.
"Varadharajan" <[email protected]> wrote:
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Rgds,
Varad
"Slava Imeshev" <[email protected]> wrote:
Hi Oleg,
See my answers inline.
"Oleg" <[email protected]> wrote in message
news:[email protected]...
Hello,
We have some JSPs which do a lot of processing and is 'alive' for
a
long
period
of time. If we use the JSP with small amouts of data, it is fine.But
when we
use the JSP with lot of data, it seems to 'go in a loop'.I guess you need to figure out if "seems" really "does".
It is processing the data again and again and again and brings downour
server.
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We do not think it is the code that is wrong - as it processes
perfectly
if the
data is small or when our server is not busy. This problem happensif the
data
is lot and the server is also busy. The JSP seems to be executingagain
and again.
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application? Are you running a load test?
Is there some type of 'refresh' logic in weblogic that refreshes
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there is an incoming request. It should not be happening
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Regards,
Slava Imeshev

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Les,
If I understand correctly, you can do this fairly simply.
First create datasources:
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<jbo:DataSource name="dsSubCategories" ...
<% // add a where clause to SubCategories based on the parameter "CategoryNumber"
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Create a form with your drop down lists.
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2. Add a <jbo:FormEvent> tag with a custom event name like "getSubcategories".
3. Create a LOV that isn't connected to the database:
<jbo:InputSelect multiple="false" displaydatasource="dsCategories" displaydataitem="CategoryName" displayvaluedataitem="CategoryNumber" ></jbo:InputSelect>
4. Create a second LOV that also isn't connected to a datasource. It would look like this:
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5. Add a submit button
That should work. Some things to note:
1. This probably won't track your previously selected options. I don't know if you can do that with this interface.
2. I'd add some javascript to postback when a new list item is selected.
Based on these points I would code the select list by hand like this:
<select name="CategoryNumber" size="1" onchange="this.form.submit()">
<% String curCatNumber="";
String CatNumber = params.getParameter("CategoryNumber");
if (CatNumber == null)
CatNumber = "1";
<jbo:RowsetIterate datasource="dsCategories" >
<jbo:Row id="rowCategory" datasource="dsCategories" action="active" >
<% curCatNumber = ((oracle.jbo.domain.Number)rowCategory.getAttribute("Category")).toString();%>
<option value="<%=curParlimentId%>"
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</select>
The second would be similar.
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~Rob Lundeen

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Hello
First this could be a stupid question, but i just can't find a solutions on this problem.
I wondering that could it be a two managed beans in same jsp page, here is a example:
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then i have a dataTable like this:
<t:dataTable value="#{customerListBean.customerBeans}"
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Thanks for help.

when i push nextPage (commandLink) it's call action
and count a new range of dataset and after that it's
calls a method which is declared on subClass and that
method get a new data of database on given params.
and put it on DataTable.
So listBean is upper class and customerListBean
extends on ListBeanNo, it doesn't work that way as you expected. You have created two independent instances. They doesn't communicate automatically with each other or so. Just use one CustomerListBean instance and call the inherited methods of ListBean on the #{customerListBean} managed bean instance.

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I have a JSP (lets call it �PAGE_A.jsp�) that contains a table� the <TD> tags hold IFRAME tags with an initial �src� referencing a �blank.jsp��
�

<table width="100%">
<tr>
<td>
<iframe id='report_view' name="report_view" width='60%' height="500" frameborder="0" src='blank.jsp'>
</td>
<td align="left">
<iframe id='drilldown_view' name="drilldown_view" width='40%' height="500" frameborder="0" src='blank.jsp'>
</td>
</tr>
</table>
�
At a point, the user initiates a call to a servlet, and the output (PAGE_B.jsp) is returned to the first IFRAME �report_view�.
PAGE_B.jsp contains HTML anchor tags that call the servlet again, this time the return target is the second IFRAME �drilldown_view� :
( Some Text).
Clicking the link produces the desired page to be generated and displayed in the correct IFRAME running IE 5.5, however, the same code under NETSCAPE 7.x causes the �linked� page to open in a new browser window.
I have deduced that this effect may be due to the NETSCAPE browser �thinking� that the targeted IFRAME (�drilldown_view�) should be a �child� of the IFRAME that contains the link (�report_view�), instead of another IFRAME belonging to PAGE_A.jsp. Under this circumstance, NETSCAPE cannot find the �target�, and thus redirects to a new browser window.
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target in a link shouldn't care, as long as the IFRAME is in the same window... It should be able to find it.
Otherwise, you could explore using Javascript to get a reference to the object by specifying the path:
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Oracle 10g Diff in execution plan query with binding var Vs without

We recently did 10g upgrade. In 10g, execution plan differs for query with binding var(thru jdbc etc) Vs without it as given below. For query with binding var,
it chooses poor execution plan(no index is used, full scan is done etc). everything worked fine in 9i. To rectify the problem, we have to hint query with right index,join etc. but i dont like this solution.
I would rather prefer to correct database to choose right execution path instead of eacy query level. but not sure what causes the issue.
Does anybody came across this issue? if so, Please share your experiences. Thanks for the help. Do let me know if you need more info.
1. Query without binding bar:
select * from test where col1 = :1 and col2 = :2
1. Query without binding bar:
select * from test where col1 = 'foo' and col2= 'bar'

I am not an expert but in my humble opinion it is the developer's responsability to ensure the correct explain plan is used before deploying code to production, if the explain plan returned by the DB is bad, then the use of a hint is perfectly acceptable.
Check this out: http://lcgapp.cern.ch/project/CondDB/snapshot/performance.html
Excerpt:
Bind variable peeking. If an SQL query contains bind variables, the optimal execution plan may depend on the values of those variables. When the Oracle query optimizer chooses the execution plan for such a query, it may indeed look at the values of all bind variables involved: this is known as "bind variable peeking".
In summary, the execution plan used for a given SQL query cannot be predicted a priori because it depends on the presence and quality of statistics and on the values of bind variables used at the time the query was first executed (hard-parsed). As a consequence of this instability of execution plans, very different performances may be observed for the same SQL query. In COOL, this issue is addressed by adding Oracle hints to the queries, to make sure that the same (good) plan is used in all cases, even with unreliable statistics or unfavourable bind variables.
Edited by: Rodolfo Ferrari on Jun 3, 2009 9:40 PM

Bind vars and LOVs on same JSP -incompatible?

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