How to return ResultSet object from Bean to JSP

I have a Java Bean, in it I have ResultSet Object in a method. Now I want to send this ResultSet Object to the JSP.

very good advice, otherwise you will spread your sql exception handling over way too many places. Keep it centered, so you can be sure to close your connection, statement, resultset again. Otherwise your database and web application might all of a sudden stop responding.

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How to return a object from a method in a java program to a C++ call (JNI )

Sir,
I am new to java and i have been assigned a task to be done using JNI.
My question is,
How can i return an object from a method in a java program to a call for the same method in a C++program using JNI.
Any help or suggesstions in this regard would be very useful.
Thanking you,
Anjan Kumar

Hello
I would like to suggest that JNI should be your last choice and not your first choice. JNI is hard to get right. Since the JNI code is executing in the same address space as the JVM, any problems (on either side) will take down the entire process. It dilutes the Write Once Run Anywhere (WORA) value proposition because you need to provide the JNI component for all hardware/OS platforms. If you can keep your legacy code(or whatever you feel you need to do in JNI) in a separate address space and communicate via some inter-process channel, you end up with a system that is more flexible, portable, and scalable.
Having said all that, head over to the Java Native Interface: Programmer's Guide and Specification web page:
http://java.sun.com/docs/books/jni/
Scroll down to the Download the example code in this book in ZIP or tar.gz formats. links and download the example source. Study and run the example sources. The jniexamples/chap5/MyNewString demo creates a java.lang.String object in native code and returns it to the Java Language program.

Newbie question on how to return java objects from java stored procedures

Hi,
As you may guess, i'm new to this.
I have a stored procedure that does some calculations and creates a list of java objects as the result of the query.
How would I return the list from the database to the client application?
Would I have to create an Oracle type that maps to the java object?
Please help.
Jag

Hi Jag,
Your question is very vague (to me). Perhaps you could post what you have done so far? Have you tried looking through the Sample Code page of the Technet Web site, or tried searching the Ask tom Web site, or MetaLink?
Good Luck,
Avi.

How to return custJava Object from Java Stored Function/Procedure to Java Application

I WILL PAY $100 FOR SOLUTION.
Oracle JDBC documentation gives step by step on how to return Oracle Type Object to Java Application. No question here.
But is it possible to create Java Stored Function [getMyClass() ] which returns CUSTOM Java based object [MyClass] to Java application like:
//java stored function
class Foo
public static MyClass getMyClass()
return new MyClass();
//java class I want to return to Java
class MyClass
public String getGreetings(String name)
return "Hello " + name;
I tried to do it using intermittent Oracle
Type Object and OracleConnection map to make binding between Java->Oracle->Java. I could
not get throgh meaningless run time ORA Errors. Any kind of help would be greatly
appreciated. If you know the answer please
post it or e-mail [email protected]
null

You don't say which version of the database you are on. There's an interesting looking article on OTN on handling CLOBs in JDBC in 10g. It may well be useful for earlier versions too (but no guarantees).
Cheers, APC

How to read appended objects from file with ObjectInputStream?

Hi to everyone. I'm new to Java so my question may look really stupid to most of you but I couldn't fined a solution by myself... I wanted to make an application, something like address book that is storing information about different people. So I decided to make a class that will hold the information for each person (for example: nickname, name, e-mail, web address and so on), then using the ObjectOutputStream the information will be save to a file. If I want to add a new record for a new person I'll simply append it to the already existing file. So far so good but soon I discovered that I can not read the appended objects using ObjectInputStream.
What I mean is that if I create new file and then in one session save several objects to it using ObjectOutputStream they all will be read with no problem by ObjectInputStream. But after that if in a new session I append new objects they won't be read. The ObjectInputStream will read the objects from the first session after that IOException will be generated and the reading will stop just before the appended objects from the second session.
The following is just a simple test it's not actual code from the program I was talking about. Instead of objects containing different kind of information I'm using only strings here. To use the program use as arguments in the console "w" to create new file followed by the file name and the strings you want save to the file (as objects). Example: "+w TestFile.obj Thats Just A Test+". Then to read it use "r" (for reading), followed by the file name. Example "+r TestFile.obj+". As a result you'll see that all the strings that are saved in the file can be successfully read back. Then do the same: "+w TestFile.obj Thats Second Test+" and then read again "+r TestFile.obj+". What will happen is that the strings only from the first sessions will be read and the ones from the second session will not.
I am sorry for making this that long but I couldn't explain it more simple. If someone can give me a solution I'll be happy to hear it! ^.^ I'll also be glad if someone propose different approach of the problem! Here is the code:
import java.io.*;
class Fio
     public static void main(String[] args)
          try
               if (args[0].equals("w"))
                    FileOutputStream fos = new FileOutputStream(args[1], true);
                    ObjectOutputStream oos = new ObjectOutputStream(fos);
                    for (int i = 2; i < args.length ; i++)
                         oos.writeObject(args);
                    fos.close();
               else if (args[0].equals("r"))
                    FileInputStream fis = new FileInputStream(args[1]);
                    ObjectInputStream ois = new ObjectInputStream(fis);
                    for (int i = 0; i < fis.available(); i++)
                         System.out.println((String)ois.readObject());
                    fis.close();
               else
                    System.out.println("Wrong args!");
          catch (IndexOutOfBoundsException exc)
               System.out.println("You must use \"w\" or \"r\" followed by the file name as args!");
          catch (IOException exc)
               System.out.println("I/O exception appeard!");
          catch (ClassNotFoundException exc)
               System.out.println("Can not find the needed class");

How to read appended objects from file with ObjectInputStream? The short answer is you can't.
The long answer is you can if you put some work into it. The general outline would be to create a file with a format that will allow the storage of multiple streams within it. If you use a RandomAccessFile, you can create a header containing the length. If you use streams, you'll have to use a block protocol. The reason for this is that I don't think ObjectInputStream is guaranteed to read the same number of bytes ObjectOutputStream writes to it (e.g., it could skip ending padding or such).
Next, you'll need to create an object that can return more InputStream objects, one per stream written to the file.
Not trivial, but that's how you'd do it.

[UIX] How To: Return multiple values from a LOV

Hi gang
I've been receiving a number of queries via email on how to return multiple items from a LOV using UIX thanks to earlier posts of mine on OTN. I'm unfortunately aware my previous posts on this are not that clear thanks to the nature of the forums Q&A type approach. So I thought I'd write one clear post, and then direct any queries to it from now on to save me time.
Following is my solution to this problem. Please note it's just one method of many in skinning a cat. It's my understanding via chatting to Oracle employees that LOVs are to be changed in a future release of JDeveloper to be more like Oracle Forms LOVs, so my skinning skills may be rather bloody & crude very soon (already?).
I'll base my example on the hr schema supplied with the standard RDBMS install.
Say we have an UIX input-form screen to modify an employees record. The employees record has a department_id field and a fk to the departments table. Our requirement is to build a LOV for the department_id field such that we can link the employees record to any department_id in the database. In turn we want the department_name shown on the employees input form, so this must be returned via the LOV too.
To meet this requirement follow these steps:
1) In your ADF BC model project, create 2 EOs for employees and departments.
2) Also in your model, create 2 VOs for the same EOs.
3) Open your employees VO and create a new attribute DepartmentName. Check selected in query. In expressions type (SELECT dept.department_name FROM departments dept WHERE dept.department_id = employees.department_id). Check Updateable always.
4) Create a new empty UIX page in your ViewController project called editEmployees.uix.
5) From the data control palette, drag and drop EmployeesView1 as an input-form. Notice that the new field DepartmentName is also included in the input-form.
6) As the DepartmentName will be populated either from querying existing employees records, or via the LOV, disable the field as the user should not have the ability to edit it.
7) Select the DepartmentId field and delete it. In the UI Model window delete the DepartmentId binding.
8) From the data controls palette, drag and drop the DepartmentId field as a messageLovInput onto your page. Note in your application navigator a new UIX page lovWindow0.uix (or similar) has been created for you.
9) While the lovWindow0.uix is still in italics (before you save it), rename the file to departmentsLov.uix.
10) Back in your editEmployees.uix page, your messageLovInput source will look like the following:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="${bindings.DepartmentId.path}"
    destination="lovWindow0.uix"/>Change it to be:
<messageLovInput
    model="${bindings.DepartmentId}"
    id="DepartmentId"
    destination="departmentsLov.uix"
    partialRenderMode="multiple"
    partialTargets="_uixState DepartmentName"/>11) Also change your DepartmentName source to look like the following:
<messageTextInput
    id=DepartmentName
    model="${bindings.DepartmentName}"
    columns="10"
    disabled="true"/>12) Open your departmentsLov.uix page.
13) In the data control palette, drag and drop the DepartmentId field of the DepartmentView1 as a LovTable into the Results area on your page.
14) Notice in the UI Model window that the 3 binding controls have been created for you, an iterator, a range and a binding for DepartmentId.
15) Right click on the DepartmentsLovUIModel node in the UI Model window, then create binding, display, and finally attribute. The attribute binding editor will pop up. In the select-an-iterator drop down select the DepartmentsView1Iterator. Now select DepartmentName in the attribute list and then the ok button.
16) Note in the UI Model you now have a new binding called DCDefaultControl. Select this, and in the property palette change the Id to DepartmentName.
17) View the LOV pages source, and change the lovUpdate event as follows:
<event name="lovSelect">
    <compound>
        <set value="${bindings.DepartmentId.inputValue}" target="${sessionScope}" property="MyAppDepartmentId" />
        <set value="${bindings.DepartmentName.inputValue}" target="${sessionScope}" property="MyAppDepartmentName" />
    </compound>
</event>18) Return to editEmployees.uix source, and modify the lovUpdate event to look as follows:
<event name="lovUpdate">
    <compound>
        <set value="${sessionScope.MyAppDepartmentId}" target="${bindings.DepartmentId}" property="inputValue"/>
        <set value="${sessionScope.MyAppDepartmentName}" target="${bindings.DepartmentName}" property="inputValue"/>
    </compound>
</event>Thats it. Now when you select a value in your LOV, it will return 2 (multiple!) values.
A couple things to note:
1) In the messageLovInput id field we dont use the .path notation. This is mechanism for returning 1 value from the LOV and is useless for us.
2) Again in the messageLovInput we supply _uixState as an entry in the partialTargets.
3) We are relying on partial-page-refresh functionality to update multiple items on the screen.
Im not going to take the time out to explain these 3 points, but its worthwhile you learning more about them, especially the last 2, as a separate exercise.
One other useful thing to do is, in your messageLovInput, include as a last entry in the partialTargets list MessageBox. In turn locate the messageBox control on your page (if any), and supply an id=MessageBox. This will allow the LOV to place any errors raised in the MessageBox and show them to the user.
I hope this works for you :)
Cheers,
CM.

Thanks Chris,
It took me some time to find the information I needed, how to use return multiple values from a LOV popup window, then I found your post and all problems were solved. Its working perfectly, well, almost perfectly.
Im always fighting with ADF-UIX, it never does the thing that I expect it to do, I guess its because I have a hard time letting go of the total control you have as a developer and let the framework take care of a few things.
Anyway, I'm using your example to fill 5 fields at once, one of the fields being a messageChoice (a list with countries) with a LOV to a lookup table (id , country).
I return the countryId from the popup LOV window, that works great, but it doesn't set the correct value in my messageChoice . I think its because its using the CountryId for the listbox index.
So how can I select the correct value inside my messageChoice? Come to think of it, I dont realy think its LOV related...
Can someone help me out out here?
Kind regards
Ido

Hi,how can i transport objects from one server to other like (Dev To Qty)

Hi Sir/madam,
Can u explain how can i transport objects from one server to other like (Development To Quality To Production).
Regards,
Vishali.

Hi Vishali,
Step 1: Collect all Transports(with Packages) in Transports Tab(RSA1)- CTO
Step 2: Release the subrequests first and then the main request by pressing Truck button
Step 3: STMS or Customized transactions
Object Collection In Transports:
The respective Transports should have the following objects:
1. Base Objects -
a. Info Area
b. Info object catalogs
c. Info Objects
2. Info Providers u2013
a. Info Cubes
b. Multi Providers
c. Info Sets
d. Data Store Objects
e. Info Cube Aggregates
3. Transfer Rules u2013
a. Application Components
b. Communication Structure
c. Data Source replica
d. Info Packages
e. Transfer Rules
f. Transformations
g. Info Source Transaction data
h. Transfer Structure
i. Data sources (Active version)
j. Routines & BW Formulas used in the Transfer routines
k. Extract Structures
l. (Note) If the transfer structures and related objects are being transferred without preceding
Base Objects transport (e.g. while fixing an error) it is safer to transport the related Info
Objects as well.
4. Update Rules u2013
a. Update rules
b. Routines and formulas used in Update rules
c. DTPs
5. Process Chains u2013
a. Process Chains
b. Process Chain Starter
c. Process Variants
d. Event u2013 Administration Chains
6. Report Objects u2013
a. Reports
b. Report Objects
c. Web Templates
Regards,
Suman

How to send an object from one application to another?

Hi all,
I have two applications over the same server. The first application needs to send an object to the other application.
I try to put the object as a session attribute, but in the moment that the second application tries to get the attribute, the attribute doesn't exist.
Does anybody now how can pass an object from the one application to the other?

You can also use JMS

How to remove the Object from memory.

Hello.
Flash file that i made with Flex Builder uses memory too
much.
Look at the next example source code.
var testCan:Canvas = new Canvas();
this.addChild(testCan);
this.removeChild(testCan);
testCan = null;
but just memory usage still goes up, is not freed instantly.
so if i load the large flash files on my web browser,
after 5 munites or something, the web browser is down.
How to remove the object from memory immediately without
delay?

It's all about the Garbage Collector ..
There is a nice write up here :
http://www.gskinner.com/blog/archives/2006/06/as3_resource_ma.html

How to remove unused objects from the webcatalog In OBIEE11g

Hi,
I want to delete unused objects from obiee11g catalog, i know in obiee10g it's working fine (i.e: we can do it via manage catalog then delete the unused objects) is there any way to do it automatically like RPD utility --->removing unused objects from Physical layer in RPD
fyi: I don't want to delete manualy. i need somethink like button/link to find unused objects(report,filter,folder..etc) from my obiee11g catalog.
Thanks
Deva
Edited by: Devarasu on Nov 29, 2011 12:06 PM
Edited by: Devarasu on Nov 29, 2011 3:15 PM

Hi,
Checked with Oracle Support team and confirmed below points
--> incorporated into the Current product and consider as BUG it may resolve future release
--> Currently there isnt any automatic method to remove the unused objects like reports, filters,folder etc from catalog.
Treated as Bug
Bug 13440888 - AUTOMATICALLY REMOVE OF UNUSED CATALOG OBJECTS FROM WEBCATALOG
FYI:
SR 3-4984291131: How to remove unused objects from the webcatalog in obiee11g
Thanks
Deva

How to move the objects from Infoarea to another?

Hi,
How to move the objects from Infoarea to another?
Thanx in advance,
Ravi.

Hi ..
If the drag & drop functionality is enabled you can drag the catalog and drop it in another InfoArea just as you do with files on your PC.
The other procedure is Use the right mouse button to create an InfoObject catalog in the InfoArea. If you want to make a copy of an existing InfoObject catalog, specify a reference InfoObject catalog.
and check this thread
Re: Info Object Mapping to Info Area

How do I move objects from other package to a newly created one?

How do I move objects from other package to a newly created one?
Thanks!

Dear Anthony Pham ,
for changing objects from one package to another package
open that object for example Report
open the report and than click GOTO select OBJECT DIRECTIORY ENTRY
than it will open a popup in that popup click the change and give the new package
Thanks
Surendra

How to return java objects on the button click

hello all,
i wonder if any body let me know ,how to return java objects on button click,
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
class base
     base()
          JFrame frame = new JFrame("Base class Message Dialog Box");
          JPanel panel = new JPanel();
          JButton buttonchildone = new JButton("Child class one");
          buttonchildone.addActionListener(new ActionListener(){
               public actionPerformed(ActionEvent e)
                    childone ch1=new childone();
               return ch1;
          JButton buttonchildtwo = new JButton("Child class two");
          buttonchildtwo.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent e)
                    childtwo ch2=new childtwo();
                    return ch2;
          panel.add(buttonchildone);
          panel.add(buttonchildtwo);
          frame.add(panel);
          frame.setSize(300, 300);
          frame.setVisible(true);
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     void show()
          System.out.println("Base class show() method");
public class mainmethod
     public static void main(String[] args)
          base baseobj=new base();
here my aim is to achieve dynamic polymorphism by button click's ,where based on the button click i can send back an object of childone or childtwo classes
thanks and regard
Mac
Message was edited by:
LoveOpensource

You probably need to rethink your design. Where are these child classes going? What is using or consuming them? I agree with the message above about a button instantiating a parent field variable to one child or the other depending on which button is pressed.
Message was edited by:
petes1234

How to move database objects from one user to another user

Could someone help how to move database objects from one user to another user
Thanks in advance

Thanks a lot for the reply.
Actually I wanted to know whether there is any command to change the owner ship of the table.
For ex table1 belongs to user1. can the owner of table1 to be changed to owner2.
directly using an oracle command. I knew that it can be done using import and export, since the table was 200 million thought the rename command would be faster instead of import and export.
Thanks Billy for letting me know that it is not possible using oracle query.

How to pass an object from jsp to other jsp using SendRedirect

How to pass an object from one jsp to the other jsp using ssendRedirect with out using the session
I am having 2 jsps
x.jsp and y.jsp
From x.jsp using sendRedirect iam going to y.jsp
From x.jsp i have pass an object to the y.jsp
Is it possible without putting the object in session
Is it possible using EncodeUrl
Please help me Its Urgent

Is it possible without putting the object in sessionAnything is possible. Would you accept that it is very difficult?
When you send a redirect, it tells the browser to send a new request for the target page. That means any request parameters/attributes are lost.
Is it possible using EncodeUrl response.encodeURL() puts the session id into a url if the browser does not support cookies. It is purely for retaining the session.
There are two ways that you can communicate across a sendRedirect.
1 - use the session
2 - pass a parameter in the url.
parameters are string based, so passing objects is almost out of the question.
Potentially you could serialize your object, encode it in base64 (so it is composed completely as characters) and pass it as a parameter to the other page, where you retrieve it, unencode it, and then load the serialized object.
Or you can just use the session.

How to return ResultSet object from Bean to JSP

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