Passing a Rowkey from one page to another?

One page A: I use the navigator and the CurrentViewRecord to
show my Attributes. I extract the key, i add the value to the
session.
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<jbo:ApplicationModule
configname="Bc4jPackage.Bc4jPackageModule.Bc4jPackageModuleLocal"
id="Bc4jPackageModule" username="cbetb_java"
password="cbetb_java" />
<LINK REL=STYLESHEET TYPE="text/css"
HREF="/webapp/cabo/images/cabo_styles.css" >
<TITLE>
Client-Projects
</TITLE>
</HEAD>
<BODY>
<jsp:useBean class="oracle.jbo.html.databeans.JSNavigatorBar"
id="nav" scope="request" >
<%
 nav.setShowNavigationButtons(true);
 nav.setReleaseApplicationResources(false);
 nav.initialize
(pageContext,"MyProject2_Bc4jPackage_Bc4jPackageModule.ClientsVie
w");
nav.addButton(nav.NAVIGATE_INSERT, "ClientEdit.jsp");
 nav.render();
%>
</jsp:useBean>
 
<jsp:useBean
class="oracle.jbo.html.databeans.JSViewCurrentRecord"
id="currentRecord" scope="request" >
<%
 currentRecord.setShowRecordNumbers(true);
 currentRecord.setReleaseApplicationResources(false);
 currentRecord.setDisplayAttributes
("Clientid,Companyname,Address,City,Stateorprovince,Postalcode,Co
untry,Phonenumber,Faxnumber,VatNr,Vat,Notes,UrlWebsite,Oracle,Mic
rosoft,Powerbuilder,Customer,Lead,Supplier,Created,Lastupdated,Ba
nkaccountnr1,Bankaccountnr2");
 currentRecord.initialize
(pageContext,"MyProject2_Bc4jPackage_Bc4jPackageModule.ClientsVie
w");
 currentRecord.render();
String k ;
Row r = currentRecord.getRowSet().getCurrentRow () ;
out.println ( r.getAttribute ( "City") ) ;
k =currentRecord.getRowKey( r ) ;
out.println ( currentRecord.getRowKey( r ) ) ;
session.setAttribute("rkey",r);
%>
</jsp:useBean>
On page B: I want to get the row associated with the rowkey i
passed to the session. But i seem to be unable to get that
rowkey correctly?!
<jbo:ApplicationModule id="Bc4jPackage.Bc4jPackageModule"
configname="Bc4jPackage.Bc4jPackageModule.Bc4jPackageModuleLocal"
username="cbetb_java" password="cbetb_java"/>
 
<% Key key = (Key)session.getAttribute("rkey");%>
<>
<jbo:DataSource id="ds" appid="Bc4jPackage.Bc4jPackageModule"
viewobject="ClientsView"/>
<jbo:Row id="crow" datasource="ds" action="Find"
rowkeyparam="key" >
What is wrong with the code? Is there a better way to pass the
rowkey?
thx

One page A: I use the navigator and the CurrentViewRecord to
show my Attributes. I extract the key, i add the value to the
session.
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<jbo:ApplicationModule
configname="Bc4jPackage.Bc4jPackageModule.Bc4jPackageModuleLocal"
id="Bc4jPackageModule" username="cbetb_java"
password="cbetb_java" />
<LINK REL=STYLESHEET TYPE="text/css"
HREF="/webapp/cabo/images/cabo_styles.css" >
<TITLE>
Client-Projects
</TITLE>Hi,
The api for setting of session objects is session.setAttribute
(String name, Object obj). In your first jsp, you set a string
with a string and then tried to get back the object referencing
the a key with (Key)session.getAttribute.
You can do this two ways, you just have to be consistant with
your implementation:
One way is to get the string and set the attribute like you did
in the first jsp with String k. In the second you must retrieve
it with a string call (String)session.getAttribute and then
maybe do a findbyPrimaryKey method.
The second way is to set the attribute with the key and retrieve
it with the a key:
jsp1:
Key key;
key = getmyCurrentRow().getKey();
session.setAttribute("myk", key);
now in the second jsp2:
Key key = (Key) session.getAttribute("myk");
Just remember to compare apples to apples and oranges to
oranges!!!!!
-aaron
</HEAD>
<BODY>
<jsp:useBean class="oracle.jbo.html.databeans.JSNavigatorBar"
id="nav" scope="request" >
<%
 nav.setShowNavigationButtons(true);
 nav.setReleaseApplicationResources(false);
 nav.initialize
(pageContext,"MyProject2_Bc4jPackage_Bc4jPackageModule.ClientsVie
w");
nav.addButton(nav.NAVIGATE_INSERT, "ClientEdit.jsp");
 nav.render();
%>
</jsp:useBean>
 
<jsp:useBean
class="oracle.jbo.html.databeans.JSViewCurrentRecord"
id="currentRecord" scope="request" >
<%
 currentRecord.setShowRecordNumbers(true);
 currentRecord.setReleaseApplicationResources(false);
 currentRecord.setDisplayAttributes
("Clientid,Companyname,Address,City,Stateorprovince,Postalcode,Co
untry,Phonenumber,Faxnumber,VatNr,Vat,Notes,UrlWebsite,Oracle,Mic
rosoft,Powerbuilder,Customer,Lead,Supplier,Created,Lastupdated,Ba
nkaccountnr1,Bankaccountnr2");
 currentRecord.initialize
(pageContext,"MyProject2_Bc4jPackage_Bc4jPackageModule.ClientsVie
w");
 currentRecord.render();
String k ;
Row r = currentRecord.getRowSet().getCurrentRow () ;
out.println ( r.getAttribute ( "City") ) ;
k =currentRecord.getRowKey( r ) ;
out.println ( currentRecord.getRowKey( r ) ) ;
session.setAttribute("rkey",r);
%>
</jsp:useBean>
On page B: I want to get the row associated with the rowkey i
passed to the session. But i seem to be unable to get that
rowkey correctly?!
<jbo:ApplicationModule id="Bc4jPackage.Bc4jPackageModule"
configname="Bc4jPackage.Bc4jPackageModule.Bc4jPackageModuleLocal"
username="cbetb_java" password="cbetb_java"/>
 
<% Key key = (Key)session.getAttribute("rkey");%>
<>
<jbo:DataSource id="ds" appid="Bc4jPackage.Bc4jPackageModule"
viewobject="ClientsView"/>
<jbo:Row id="crow" datasource="ds" action="Find"
rowkeyparam="key" >
What is wrong with the code? Is there a better way to pass the
rowkey?
thx

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{quote}how to pass column name as a values from one page to another
for example i have to pass 'c2' as a value to next page{quote}for report pivot you can reffer below link
Report
Amu

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page to the next like you would with Web Forms. (If you are doing
that you may want to simply write the data to a Shared Object, Pass
it to a server to store and then feed back into the second Flex App
when it loads or perhaps use the ExternalInterface to then pass it
through as a series of URL parameters that can be loaded into the
next Flex App.)
In Flex you do not have to worry about loosing state between
pages because there are literally no pages. Only different views.
You would not "Send" the value from one page to another. You
provide a mechanism for the second view to reference the same model
or data object (most call them ValueObjects) that the first view is
setting via the form fields.
You would want to use a ValueObject in the first VIEW and
then fill the object with the form data using setter methods on the
object. For example set the fields onChange event to call the
setter on the object and pass it the form fields value as the
property. Alternately you could bind the values of the model
directly to the fields so that they automatically obtain the data
that is being filled in.
Depending on how complex of an application you are going to
build and how scalable it must eventually be you have many
different options to choose from to allow the second View to use
the data set but the first. However to make the application
ultimately more scalable you are going to want to keep your view
separated from the controller and that separated from the
Model/ValueObject. (By seperated I mean in different classes.)
I would suggest looking up the subject of MVC in Flex and
also the Mediator Design pattern. There are many great sources of
information.
Here are a few links that may help with ideas.
http://flexblog.faratasystems.com/?p=246
http://pages.cpsc.ucalgary.ca/~heatond/mediator/
http://livedocs.adobe.com/flex/3/html/help.html?content=introbd_2.html

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