Passing Objects via Request

I have a very simple problem that is bugging me to death. I've created a simple logon page that authenticates against an ldap directory. Once the authentication has completed successfully I create a user detail object which. Upon success the action returns success and I need to pass that UserDetails object to the forwarding page to display the data. What is the best method to do this? Thanks for the help guys.

If you're forwarding from one view to another via navigation, then in the action that submits the form, store the object in the RequestMap or SessionMap:
FacesContext.getCurrentInstance().getExternalContext().getRequestMap().put(<name>,<object>);or
FacesContext.getCurrentInstance().getExternalContext().getSessionMap().put(<name>,<object>);You can then refer to this object via the expression #{requestScope.name} where name was the value you used when storing in the map.

Similar Messages

Passing large objects in request

Is it bad practice to pass large objects such as an ArrayList with large amounts of data in the request object? Will it impact performance?

dorr67 wrote:
Yes, to be more specific, I'm creating a List from my DAO and putting in the HttpServletRequest object using request.setAttribute("dataList", dataList), then retrieving the List in the jsp to render a datagrid. I was concerned if this could be a problem down the road when dealing with large amounts of data in the list. Pagination will be handled in the grid component, but I was concerned with getting the data source to the grid. I'm using Spring so if there is a more efficient manner to do this, please let me know.
Thanks.Sounds like it doesn't scale good if you have lots of users, but it's only a reference to the list that is passed around.
Kaj

How to pass a HTTP request from a simple java class

Is it possible to pass an HTTP request from a simple java class.if yes how?

Is it possible to pass an HTTP request from a simple
java class.if yes how?If you're talking about creating a HttpRequest object and passing it to a servlet, that would be a red flag to me that your design is flawed. You shouldn't have to do that - the application server (Tomcat, Weblogic, etc) should be the only thing that has to worry about creating that kind of object and passing it to you.

Passing object as parameter in JSF using h:commandLink tag

Hi ,
I have a scenario in which i need to pass objects from one jsp to another using h:commandLink. i read balusC article "Communication in JSF" and found a basic idea of achieving it. Thanks to BalusC for the wonderful article. But i am not fully clear on the concepts and the code is giving some error. The code i have is
My JSP:
This commandlink is inside a <h:column> tag of <h:dataTable>
<h:commandLink id="ol3"action="ManageAccount" actionListener="#{admincontroller.action}" >
               <f:param id="ag" name="account" value="#{admincontroller.account}" />
               <h:outputText id="ot3" value="Manage Account" rendered="#{adminbean.productList!=null}" />
               </h:commandLink>
Also a binding in h:dataTable tag with the binding="#{admincontroller.dataTable}"
                  My Backing Bean:
public class CompanyAdminController {
          private HtmlDataTable dataTable;
          private Account account=new Account();
public HtmlDataTable getDataTable() {
        return dataTable;
public Account getAccount() {
         return this.account;
public void setAccount(Account account) {
          this.account = account;
      public void action(){
            account= (Account)this.getDataTable().getRowData();
       } faces-config.xml
<navigation-rule>
    <from-view-id>/compadmin.jsp</from-view-id>
    <navigation-case>
      <from-outcome>ManageAccount</from-outcome>
      <to-view-id>/manageAccount.jsp</to-view-id>
    </navigation-case>
</navigation-rule>
<managed-bean>
          <managed-bean-name>admincontroller</managed-bean-name>
          <managed-bean-class>com.forrester.AdminController</managed-bean-class>
          <managed-bean-scope>request</managed-bean-scope>
          <managed-property>
               <property-name>account</property-name>
               <property-class>com.model.Account</property-class>
               <value>#{param.account}</value>
         </managed-property>
     </managed-bean>My account object:
public class Account {
string name;
public String getName()
    return this.name;
public void setName(String name)
       this.name=name;
}I need to display #{admincontroller.account.name} in my forwarded jsp. But I am not sure whether the code i wrote in commandlink is correct. I get an error if i use <f:setActionListener> . No tag "setPropertyActionListener" defined in tag library imported with prefix "f"
Please advise.
Edited by: twisai on Oct 18, 2009 11:46 AM
Edited by: twisai on Oct 18, 2009 11:47 AM
Edited by: twisai on Oct 18, 2009 11:48 AM

Yes.. iam removed the managedproperty from faces-config. But still i get the null pointer exception on main jsp itself and i am taken to second jsp manageaccount.jsp. Did you find anything wrong in my navigation case in the action method??
                                 public String loadAccount(){
           Account account = (Account)this.getDataTable().getRowData();
            return "ManageAcct";And also can you please answer this question i have
The AdminController is the backing bean of 1st JSP and manageAccontController is the backing bean of forwarded JSP .
Can i put this action method and dataTable binding in a 2nd manageAccontController backing bean instead of AdminController. But if i do that way dataList binding in h:dataTable tag will be in first JSP backing bean and dataTable binding to 2nd JSP. Not sure how to deal with this.
{

Error in sending object via a JMS..

The JMS is giving me error when i am sending an object via a sender...i am using point to point,...and Weblogic server....
the whole thing of object sending works when i run it in two different consoles...i
but when i move to webworld....i e tomcat it shows me the following exception.....
weblogic.jms.common.JMSException: Error deserializing object
at weblogic.jms.common.ObjectMessageImpl.getObject(ObjectMessageImpl.java:144)
at intertec.jms.ObjectReceiver1.onMessage(ObjectReceiver1.java:64)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:2596)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:2516)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.Kernel.execute(Kernel.java:336)
at weblogic.kernel.Kernel.execute(Kernel.java:360)
at weblogic.kernel.Kernel.execute(Kernel.java:348)
at weblogic.jms.client.JMSSession.pushMessage(JMSSession.java:2392)
at weblogic.jms.client.JMSSession.invoke(JMSSession.java:2919)
at weblogic.jms.dispatcher.Request.wrappedFiniteStateMachine(Request.java:609)
at weblogic.jms.dispatcher.DispatcherImpl.dispatchAsyncInternal(DispatcherImpl.java:128)
at weblogic.jms.dispatcher.DispatcherImpl.dispatchOneWay(DispatcherImpl.java:312)
at weblogic.jms.dispatcher.DispatcherImpl_WLSkel.invoke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:466)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:409)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:353)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:144)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:404)
at weblogic.rmi.internal.BasicExecuteRequest.execute(BasicExecuteRequest.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
Caused by: java.lang.ClassNotFoundException: intertec.beans.Emp
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:891)
at org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:756)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:219)
at weblogic.jms.common.ObjectMessageImpl$ObjectInputStream2.resolveClass(ObjectMessageImpl.java:305)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1513)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at java.util.Hashtable.readObject(Hashtable.java:841)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:838)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1746)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at weblogic.jms.common.ObjectMessageImpl.getObject(ObjectMessageImpl.java:130)
... 21 more
thanks in advance....
regards
ullas

You are missing a class:
Caused by: java.lang.ClassNotFoundException: intertec.beans.Emp

Passing querystring via alias application call

Hello everyone,
first of all I'm not quite sure if this is the correct forum for my question so please excuse me if it's the wrong one.
We're using short urls (alias) to call a application in our portal. For example http://sapportal/alias_test will be transalated to something like http://host:port/irj/portal?NavigationTarget=ROLES://portal_content/content/1/2/3
So far so good. Now I want to pass a parameter via the alias (http://sapportal/alias_test?param=value). This will be translated into http://host:port/irj/portal?NavigationTarget=ROLES://portal_content/content/1/2/3?param=value. For some reason the parameter cannot be read via request->get_form_field( 'param' ). Calling the application with a parameter directly via the controller works just fine.
You might need to know that http://host:port/irj/portal?NavigationTarget=ROLES://portal_content/content/1/2/3 is using an iView to execute the BSP application. In the settings for this iView I can define application parameters, however, this won't help since the value I want to pass with the alias is dynamic.
Any idea how I could solve this issue?
Please let me know if you need any further information.
Thank you in advance.

You're only 50% correct at what you're saying. I managed to find a solution on my own and it's working.
In the controller I'm using request->get_header_fields to read the referer field. This contains the translated url including the querystring for the alias. Extracting the parameter is rather easy then.
In other words: It's possible to read parameters for the situation given but it's not as easy as reading parameters passed by a form.
For your Information: The link is used in an E-Mail where I don't want to have a full url. And even if I would use a full url (the translated url) it wouldn't help since the parameter would still not be passed to the application.
Anyway. It's solved.

Yet Another "Passing Objects" Thread

Hi All,
Quick question about passing objects:
I have three classes - ClassA, ClassB and ClassC. Lets say I create an object of ClassA in ClassB. Also, I would like to send the ClassA object from ClassB to ClassC to update its data. My question is, can I set the ClassA object in ClassC and modify it through ClassB? Confusing? I'll try to create an example below.
ClassA:
public class ClassA {
       // data
} ClassB: creates and calls update methods for ClassA object
public class ClassB {
       ClassA object = new ClassA();
       // print object
       ClassC ClassCFacade = new ClassC();
       ClassCFacade.setClassAObject(object);
       ClassCFacade.updateClassAObject(object);
       // print object
}ClassC: updates object
public class ClassC {
      // set object
      public void setClassAObject(ClassA object) {
               // sets object
      // get object
      public ClassA getClassAObject() {
              // returns object
      // modify object
      public updateClassAObject() {
            ClassA o = getClassAObject()
            // modify o
            setClassAObject(o)
}So if objects are passed by reference, handle, or whatever you call it, essentially the above code should modify ClassA object created in ClassB, meaning the ClassA object should display it was modified after second print in ClassB. Although I've tried this implementation and the ClassA object is not modified after updateClassAObject method call from ClassB.
Any input would be appreciated.
Thanks,
Bob

OK. Here's snippets of actual code:
public class ClassA implements SessionBean, ClassARemoteBusiness {
    // ClassA Attributes
    Integer ID;
    String name;
    // SET METHODS
    public void setClassAID(Integer ID) {
        this.ID = ID;
    public void setClassAName(String name) {
        this.name = name;
    // GET METHODS
    public Integer getClassAID() {
        return ID;
    public String getCLassAName() {
        return name;
import classa.ClassA;
import classc.ClassC;
import javax.servlet.*;
import javax.servlet.http.*;
public class ClassB extends HttpServlet {
    private ClassA object;
    private ClassC ClassCFacade;
    private ClassCFacade = lookupClassCBean();
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
          HttpSession session = request.getSession();
          // display object values - displays default values
          out.println("ID: " +object.getClassAID());
          out.println("Name: " +object.getClassAName());
         // update object
         ClassCFacade.setClassAObject(object);
         ClassCFacade.updateClassAObjectID(someInteger);
         ClassCFacade.updateClassAObjectName(someName);
          // display object values - displays updated values
          out.println("ID: " +object.getClassAID());
          out.println("Name: " +object.getClassAName());
    // LOOKUP METHODS
    private web.ServiceLocator serviceLocator;
    private web.ServiceLocator getServiceLocator() {
        // service locator code
    private classc.ClassCRemote lookupClassCBean() {
        // lookup code
import classa.ClassA;
public class ClassC implements SessionBean, ClassCRemoteBusiness {
    private ClassA o;
    // SET METHODS
    public void setClassAObject(ClassA object) {
        o = object;
    // UPDATE
    public void updateClassAObjectID(Integer ID) {
        o.setClassAID(ID);
    public void updateClassAObjectName(String name) {
        o.setClassAName(name);
}

Insert a Child Object via WS 2.0

Hi Everyone,
Could someone please guide to Insert a Child Object via WS 2.0.
Any snippet / code would be highly appreciated.
Thanks in advance.
Regards

Below SOAP Message deplicts the information requested
<soapenv:Body>
<ns:AccountInsert_Input>
<data:ListOfAccount>
<data:Account>
<data:Id>AAPA-480SXV</data:Id>
<data:ListOfNote>
<data:Note operation="insert">
<data:Subject>Notes Testing</data:Subject>
<data:Description>Note Testing</data:Description>
</data:Note>
</data:ListOfNote>
</data:Account>
</data:ListOfAccount>
</ns:AccountInsert_Input>
</soapenv:Body>
Regards,
Deepak H Andeli

StringBuffer Object in Request

Hi,
How to pass StringBuffer Object From JSP to Struts Action.that's i have to get the String Buffer Object from Request .Instead of Using Session
Regards
john
+91 9791132453

Parameters to servlets/jsps can only be strings.
Is there any reason it can't be a String object as opposed to a StringBuffer?
The only way this would work is if you sent the String as a value on the JSP, and then re-submitted it to the server.
Thats a round trip for the value. If the value is not too large, you should be ok, but given you are using StringBuffer I kinda doubt thats the case :-).
Cheers,
evnafets

Creating HR objects via IDoc HRMD_A05

Hi to all
I want to create HR objects via IDoc HRMD_A05 and want the objects numbered using INTERNAL number range.
The IDoc documentation says to pass an exclamation mark '!' to OBJID to make the system generate new number. However, the field is numeric and can not contain '!'.
Has anybody tried this way before and achieved to create objects numbered internally?
Thanks

Hi
I have told the issue to the SAP OSS and their feedback was:
"As explained in note 741165:
'There is no provision to carry out an internal number assignment using
ALE in the target system. Therefore, the numbers must be assigned when
the IDOCs are created in the source system.'
The documentation in the Interface Repository is wrong.
Regards
*--Serdar

Passing objects by reference in PL/SQL

Hi,
I have come across an unexpected problem using object types in PL/SQL that is causing me some grief. I'm from a Java background and am relatively new to Oracle Objects but what I'm trying to do is fairly trivial, I think. The code below illustrates the problem.
--- cut here ---
CREATE OR REPLACE TYPE test_obj_t AS OBJECT
num INTEGER,
CONSTRUCTOR FUNCTION test_obj_t RETURN SELF AS RESULT
CREATE OR REPLACE TYPE BODY test_obj_t IS
CONSTRUCTOR FUNCTION test_obj_t RETURN SELF AS RESULT IS
BEGIN
num := 0;
RETURN;
END;
END;
CREATE OR REPLACE PACKAGE test_obj_ref AS
PROCEDURE init(o IN test_obj_t);
PROCEDURE inc;
FUNCTION get_num RETURN INTEGER;
END;
CREATE OR REPLACE PACKAGE BODY test_obj_ref IS
obj test_obj_t;
PROCEDURE init(o IN test_obj_t) IS
BEGIN
obj := o;
END;
PROCEDURE inc IS
BEGIN
obj.num := obj.num + 1;
END;
FUNCTION get_num RETURN INTEGER IS
BEGIN
RETURN obj.num;
END;
END;
--- cut here ---
The object type test_obj_t holds a integer and the test_obj_ref package holds a 'reference' to an instance of the object.
To test the above code I run this PL/SQL block:
declare
obj test_obj_t;
begin
obj := test_obj_t;
test_obj_ref.init(obj);
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
test_obj_ref.inc;
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
test_obj_ref.inc;
dbms_output.put_line('obj.num='||obj.num);
dbms_output.put_line('test_obj_ref.get_num='||test_obj_ref.get_num);
end;
giving the output:
obj.num=0
test_obj_ref.get_num=0
obj.num=0
test_obj_ref.get_num=1
obj.num=0
test_obj_ref.get_num=2
It appears that the object held by the test_obj_ref package is being incremented as expected, but I would have expected the object declared in the PL/SQL block to be pointing to the same object and so should report the same incremented values.
I suspect that the object is copied in the call to test_obj_ref.init() so I end up with two object instances, one that is held by the test_obj_ref package and one in the anonymous block. Although, I thought that all IN parameters in PL/SQL are passed by reference and not copied!
Am I right?
Is passing objects by reference possible in PL/SQL, if so how?
I'm using Oracle 10.2.0.3.
Cheers,
Andy.

the object being passed to the test_obj_ref.init+ procedure is passed by reference; however, when you assign it to your package variable obj it is being copied to a new instance. you can pass object instances as parameters to procedures using the +IN OUT [NOCOPY]+ *calling mode, in which case modifications to the attributes of the passed object will be reflected in the calling scope's instance variable.
oracle's only other notion of an object reference is the +"REF <object-type>"+ datatype, which holds a reference to an object instance stored in an object table or constructed by an object view.
hope this helps...
gerard

Calling a new browser window with WD Abap and passing data via POST

Hi there,
does anybody know whether passing data via POST method is possible when opening a new browser window from within a Web Dynpro Component? In my case I use method IF_WD_WINDOW_MANAGER->CREATE_EXTERNAL_WINDOW for opening a new browser window. Now I want to pass a big amount of data which is only possible via POST method. How can I achieve that or is it not considered inside the Web Dynpro Framework?
Kind regards,
Albert

Hi Priya,
can you please explain a little bit more what you mean? I didn't get it..
Kind regards,
Albert

Best practice "changing several related objects via BDT" (Business Data Toolset) / Mehrere verbundene Objekte per BDT ändern

Hallo,
I want to start a
discussion, to find a best practice method to change several related master
data objects via BDT. At the moment we are faced with miscellaneous requirements,
where we have a master data object which uses BDT framework for maintenance (in
our case an insured objects). While changing or creating the insured objects a
several related objects e.g. Business Partner should also be changed or
created. So am searching for a best practices approach how to implement such a
solution.
One Idea was to so call a
report via SUBMIT AND RETURN in Event DSAVC or DSAVE. Unfortunately this implementation
method has only poor options to handle errors. Second it is also hard to keep LUW
together.
Another idea is to call an additional
BDT instance in the DCHCK-event via FM BDT_INSTANCE_SELECT and the parameters
iv_xpush_classic = ‘X’ and iv_xpop_classic = ‘X’. At this time we didn’t get
this solution working correctly, because there is always something missing
(e.g. global memory is not transferred correctly between the two BDT instances).
So hopefully you can report
about your implementations to find a best practice approach for facing such
requirements.
Hallo
ich möchte an der Stelle eine Diskussion starten um einen Best Practice
Ansatz zu finden, der eine BDT Implementierung/Erweiterung beschreibt, bei der
verschiedene abhängige BDT-Objekte geändert werden. Momentan treffen bei uns
mehrere Anforderungen an, bei deinen Änderungen eines BDT Objektes an ein
anderes BDT Objekte vererbt werden sollen. Sprich es sollen weitere Objekte geänderte
werden, wenn ein Objekt (in unserem Fall ein Versicherungsvertrag) angelegt
oder geändert wird (zum Beispiel ein Geschäftspartner)
Die erste unserer Ideen war es, im Zeitpunkt DSAVC oder DSAVE einen
Report per SUBMIT AND RETURN aufzurufen. Dieser sollte dann die abhängigen Änderungen
durchführen. Allerdings gibt es hier Probleme mit der Fehlerbehandlung, da
diese asynchrone stattfinden muss. Weiterhin ist es auch schwer die Konsistenz der
LUW zu garantieren.
Ein anderer Ansatz den wir verfolgt hatten, war im Zeitpunkt
DCHCK per FuBA BDT_INSTANCE_SELECT und den Parameter iv_xpush_classic = ‘X’ and
iv_xpop_classic = ‘X’ eine neue BDT Instanz zu erzeugen. Leider konnten wir diese
Lösung nicht endgültig zum Laufen bekommen, da es immer Probleme beim
Übertragen der globalen Speicher der einzelnen BDT Instanzen gab.
Ich hoffe Ihr könnt hier eure Implementierungen kurz beschreiben, dass wir
eine Best Practice Ansatz für das Thema finden können
BR/VG
Dominik

CS3 New smart object via copy not working

1. I open an image in Photoshop CS3 from camera raw (CR) as a smart object.
2. I right click on the layer and choose "new smart object via copy."
3. I double click on the thumb nail to open the image in CR.
4. I make new edits on the image in CR.
5. I click OK.
6. In CS3 both the new layer and the original layer show the edits done in # 4.
I uninstalled and reinstalled CS# to no avail.
I am running CS3 on a Win Vista 64 bit.
If anyone can make a suggestion, I thank you in advance.
JB

I should say I am trying to learn this software and stumbling through Mr. Kelby's 7 Point System book.
I found my error. I was highllighting the layers not clicking the eye icons off and on.
Thanks for all who look.
JB

Memory leak problem while passing Object to stored procedure from C++ code

Hi,
I am facing memory leak problem while passing object to oracle stored procedure from C++ code.Here I am writing brief description of the code :
1) created objects in oracle with the help of "create or replace type as objects"
2) generated C++ classes corresponding to oracle objects with the help of OTT utility.
3) Instantiating classes in C++ code and assigning values.
4) calling oracle stored procedure and setting object in statement with the help of setObject function.
5) deleted objects.
this is all I am doing ,and getting memory leak , if you need the sample code then please write your e-mail id , so that I can attach files in reply.
TIA
Jagendra

just to correct my previous reply , adding delete statement
Hi,
I am using oracle 10.2.0.1 and compiling the code with Sun Studio 11, following is the brief dicription of my code :
1) create oracle object :
create or replace type TEST_OBJECT as object
( field1 number(10),
field2 number(10),
field3 number(10) )
2) create table :
create table TEST_TABLE (
f1 number(10),f2 number (10),f3 number (10))
3) create procedure :
CREATE OR REPLACE PROCEDURE testProc
data IN test_object)
IS
BEGIN
insert into TEST_TABLE( f1,f2,f3) values ( data.field1,data.field2,data.field3);
commit;
end;
4) generate C++ classes along with map file for database object TEST_OBJECT by using Oracle OTT Utility
5) C++ code :
// include OTT generate files here and other required header files
int main()
int x = 0;
int y = 0;
int z =0;
Environment *env = Environment::createEnvironment(Environment::DEFAULT);
Connection* const pConn =
env->createConnection"stmprf","stmprf","spwtrgt3nms");
const string sqlStmt("BEGIN testProc(:1) END;");
Statement * pStmt = pConn->createStatement(sqlStmt);
while(1)
TEST_OBJECT* pObj = new TEST_OBJECT();
pObj->field1 = x++;
pObj->field2 = y++;
pObj->field3 = z++;
pStmt->setObject(1,pObj);
pStmt->executeUpdate();
pConn->commit();
delete pObj;
}

Passing Objects via Request

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