Shall I use Value Objects???

Hi,
I am creating a web app with approx 25 web pages with not much business logic.
I plan to use struts framework.
What I wanted to know was, shall I use value object pattern for my web page?
Is there some kind of questionaire which I can take to decide whether I should use VO or not?
Thanks,
KS

What's the difference between DTO and VO? Both are
little more than C structs for ferrying data between
layers. No functionality whatsoever.Value Object was the name used in the first editions of the Applied Java Patterns & Core J2ee Pattern books from Sun. These are called Data Transfer Objects in the later issues of these books.
The Value Object name also caused some confusion because the term has previously been used to refer to language specific ideoms of wrapping primative types in Object.

Similar Messages

Why use value objects?

I am trying to delve a little deeper into Flex and have come across discussions about using value objects. My question is why would you use them?
I have an application that stores records in a database using ColdFusion as a backend. Currently I use an HTTPService to call a coldfusion page that returns XML that gets put in a XMLListCollection. This is then used to populate a datagrid and form details when the datagrid item is clicked on. This all works fine and is very easy (if not very elegant, it was one of my first applications)
I have another that uses a remote object to a coldfusion cfc. This cfc returns a query based on verious parameters. This result is then put in an ArrayCollection and used various ways.
What is wrong with doing things this way and why/how would value objects help?
Thanks.
Matt

Your example has nothing to do with value objects.
Value objects are useful in a number of situations such as:
1. They can efficiently represent a limited number of values. Say you have a size field with only four possible values: small, medium, large and extra large. You can use value objects and store the ordinal value (1 to 4) in a single byte instead of needing an 11 byte string. The set of value objects can be used as a white list for validating or constraining user input.
2. You can attach other information to a value object (within reason). Say your app allows users to select from a list of colors. You can store the RGB color information in the value object for each color.
There are probably other uses such as with strategy patterns (http://en.wikipedia.org/wiki/Strategy_pattern) as well.

Need help regarding Value Object Concept in flex/java

I need to map the java objects to flex use value objects in flex.
The problem is I have a class in java which is referring to another class and again that class referring another class.
For instance
Class A
protected User user;
Class User
protected Address address;
Now I need to map class A to the flex using value object concept and I have to display the user info in the grid as well.
Need some help to get started.

You need to set the "scope" property in your remoting destination definition to "session" or "application".

Value Objects still relevant in EJB 2.0?

I came across the concept of using Value Objects to get better performance from EJBs as they reduce the number of remote calls to invoke to retrieve object property values.
However, with the introduction of LocalHome and Local interfaces for EJB 2.0, is it still useful to have value objects to pass data around, typically between EJBs and the Controller (typically servlets/JSPs or session beans that implement business logic)?

Not so fast.
I wouldn't be so quick to get rid of VOs simply because local interfaces exist now. Keep in mind that using local interfaces is not always the right answer to your problem (since there are still situations where the client and server are not co-located within a given VM).
Also, there are times when the brittleness of your API should be considered. If a method takes many parameters, it is often benificial to pass a single VO as a paramater rather than multiple individual parameters. This really comes into play when methods are modified to take different arguments (e.g. adding a new argument).
Consider a method on a bean used to update a student's records for example.public StudentVO update(String firstName, String middleInitial, String lastName, int age, String ssn, String status) throws UpdateException; is much more brittle than public StudentVO update(StudentVO student) throws UpdateException;Consider what would happen if a design change makes GPA and gradeLevel part of a student's profile.
The second method's signature would remain the same. The signature of the first method however would now read public StudentVO update(String firstName, String middleInitial, String lastName, int age, String ssn, String status, float gpa, int gradeLevel) throws UpdateException; This change would "break" the calls made by any callers of this method. While there are pros and cons to this (as well as other ways to solve this issue, such as method overloading, etc.), it is something to consider when deciding whether a value object should be used in certain situations.
Hope this adds another point of view to the discussion.
Note: I'm using Value Object (VO), Data Transfer Object (DTO) and Transfer Object (TO) to me the same thing here.

A sample Value Object code.

I understand it is a type of collection to exchange data with enterprise beans.
Am I right?
If I use value object, how can I make it?
can I get a sample?
in my understanding, I might have to make many VOs for each biz entity.
can I make a common VO( like a common dao ) to make it simple?

a value object is usually just a wrapper class that has no business or persistence logic- it's just a container for data, e.g.:
public class UserKey {
private String name;
private String userID;
//getter and setters
}

Design patterns,about value object ,how?why?could you give me a soluttion

design patterns,about value object ,how?why?could you give me a soluttion
use value object in ejb,thanks
i want not set/get the value in ejb,find the method to solve it ,use value
object ?
how? thanks.

Hai
Enter your telephone number here, at the top it will say your Exchange, Phone and cabient number. If it doesn't mention cabinet that means you are directly connected to the exchange and not via PCP.
If you are connected to a cabinet and it doesn't say FTTC is available, ask your neighbor to-do the same test (they have 2 be infinity connected). If they are, then proceed to contact the moderators here. Though it could not be showing because all the ports have been used up in the FTTC Cabinet.
If this helped you please click the Star beside my name.
If this answered your question please click "Mark as Accepted Solution" below.

What is Value object?

Hi there,
What is Value object in EJB?
TQ
Neo

The main idea of a value object is to group information into chunks to minimize the chattiness of a distributed system.
For example if you had a EJB that represented a user you might have methods called getFirstName, getLastName, getPhone, etc. Each time you call one of those methods from a remote context, you have to make a separate remote call. Each remote call involves a bunch or IP and ethernat headers that you never see but must be transfered across the network. So if you are getting two bytes of data you are really sending several hundreds or thousands of bytes of data. It's inefficient. If you were using value objects you would create a call called UserValueObject that would contain all the info about that user. Then you would have a method called getUser on your bean that would fill up the value object and return it. Then you have all the data you need about the user without making umpteen remote calls. The same thing goes for updates.

Setting the default value to taxonomy column in sharepoint 2010 using client object model

I am creating a metadata column and I want to set its default value in sharepoint 2010 using client object model. Can anyone help me?
My code for creating metadata column is as below:
            ClientContext clientContext = new ClientContext(siteUrl);
            Web site = clientContext.Web;
            List list = site.Lists.GetByTitle("LibraryName");
            FieldCollection collField = list.Fields;
            string fieldSchema = "<Field Type='TaxonomyFieldType' DisplayName='SoftwareColumn' Name='SoftwareColumn' />";
            collField.AddFieldAsXml(fieldSchema, true, AddFieldOptions.DefaultValue);
            //oneField.DefaultValue = "ASP.NET|4c984b91-b308-4884-b1f1-aee5d7ed58b2"; // wssId[0].ToString() + ";#" + term.Name + "|" + term.Id.ToString().ToLower();
            clientContext.Load(collField);
            clientContext.ExecuteQuery();

Hi,
Please try the code like this:
ClientContext clientContext = new ClientContext("http://yoursite/");
List list = clientContext.Web.Lists.GetByTitle("List1_mmsfield");
clientContext.Load(list);
clientContext.ExecuteQuery();
FieldCollection fields = list.Fields;
clientContext.Load(fields);
clientContext.ExecuteQuery();
Field f = fields.GetByTitle("mms");
clientContext.Load(f);
clientContext.ExecuteQuery();
Console.WriteLine(f.Title + "---" + f.DefaultValue);
//2;#A2|a0a95267-b758-4e4d-8c39-067069fd2eef
//1;#A1|641f5726-992c-41c8-9ddc-204a60b88584
f.DefaultValue = "1;#A1|641f5726-992c-41c8-9ddc-204a60b88584";
f.Update();
clientContext.Load(f);
clientContext.ExecuteQuery();
Console.WriteLine(f.Title + "---" + f.DefaultValue);
Best regards
Patrick Liang
TechNet Community Support

How to upload a document with values related to document properties in to document set at same time using Javascript object model

Hi,
Problem Description: Need to upload a document with values related to document properties using custom form in to document set using JavaScript Object Model.
Kindly let me know any solutions.
Thanks
Razvi444

The following code shows how to use REST/Ajax to upload a document to a document set.
function uploadToDocumentSet(filename, content) {
appweburl = decodeURIComponent(getQueryStringParameter('SPAppWebUrl'));
hostweburl = decodeURIComponent(getQueryStringParameter('SPHostUrl'));
var restSource = appweburl +
"/_api/SP.AppContextSite(@target)/web/GetFolderByServerRelativeUrl('/restdocuments/testds')/files/add(url='" + filename + "',overwrite=true)?@target='" + hostweburl + "'";
var dfd = $.Deferred();
$.ajax(
'url': restSource,
'method': 'POST',
'data': content,
processData: false,
timeout:1000000,
'headers': {
'accept': 'application/json;odata=verbose',
'X-RequestDigest': $('#__REQUESTDIGEST').val(),
"content-length": content.byteLength
'success': function (data) {
var d = data;
dfd.resolve(d);
'error': function (err,textStatus,errorThrown) {
dfd.reject(err);
return dfd;
Then when this code returns you can use the following to update the metadata of the new document.
function updateMetadataNoVersion(fileUrl) {
appweburl = decodeURIComponent(getQueryStringParameter('SPAppWebUrl'));
hostweburl = decodeURIComponent(getQueryStringParameter('SPHostUrl'));
var restSource = appweburl +
"/_api/SP.AppContextSite(@target)/web/GetFolderByServerRelativeUrl('/restdocuments/testds')/files/getbyurl(url='" + fileUrl + "')/listitemallfields/validateupdatelistitem?@target='" + hostweburl + "'";
var dfd = $.Deferred();
$.ajax(
'url': restSource,
'method': 'POST',
'data': JSON.stringify({
'formValues': [
'__metadata': { 'type': 'SP.ListItemFormUpdateValue' },
'FieldName': 'Title',
'FieldValue': 'My Title2'
'bNewDocumentUpdate': true,
'checkInComment': ''
'headers': {
'accept': 'application/json;odata=verbose',
'content-type': 'application/json;odata=verbose',
'X-RequestDigest': $('#__REQUESTDIGEST').val()
'success': function (data) {
var d = data;
dfd.resolve(d);
'error': function (err) {
dfd.reject(err);
return dfd;
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SPFastDeploy | SPRemoteAPIExplorer

How to change 'Modified By' column value when a new file is uploaded in SharePoint 2013 using Client Object Model?

I want to change 'Modified By' column value of a file that is being uploaded using Client Object Model in SharePoint 2013. The problem is that the version of the file is changing. Kindly help me. The code that I am using is:
using (System.IO.Stream fileStream = System.IO.File.OpenRead(m_strFilePath))
Microsoft.SharePoint.Client.File.SaveBinaryDirect(m_clientContext, str_URLOfFile, fileStream, true);
Microsoft.SharePoint.Client.File fileUploaded = m_List.RootFolder.Files.GetByUrl(str_URLOfFile);
m_clientContext.Load(fileUploaded);
m_clientContext.ExecuteQuery();
User user1 = m_Web.EnsureUser("User1");
User user2 = m_Web.EnsureUser("User2");
ListItem item = fileUploaded.ListItemAllFields;
fileUploaded.CheckOut();
item["UserDefinedColumn"] = "UserDefinedValue1";
item["Title"] = "UserDefinedValue2";
item["Editor"] = user1;
item["Author"] = user2;
item.Update();
fileUploaded.CheckIn(string.Empty, CheckinType.OverwriteCheckIn);
m_clientContext.ExecuteQuery();

Hi talib2608,
Chris is correct for this issue, when calling update using ListItem.update method, it will increase item versions, using SystemUpdate and UpdateOverwriteVersion will update the list item overwrite version.
these two methods are not available in CSOM/REST, only server object model is available for this.
Thanks,
Qiao Wei
TechNet Community Support

Mapping an object using values from multiple tables

Is it possible to use values looked up in other tables when mapping an object?
For example: I have three tables. In table 1, I have fields for 'cityCode' and 'stateCode'. Table 2 is a state table which contains a list of stateCodes and corresponding stateIds. Table 3 is a city table with cityCodes listed by stateId (the city code is unique within the stateId but can be duplicated under other stateIds). Table 3 also contains the cityName for the matching cityCode/stateId pair.
I am ultimately trying to match a cityName to a cityCode. I can't figure out how to tell toplink use the stateId returned when mapping Table 1 to Table 2 via stateCode when mapping cityCode in Table 1 to Table 3.
Any help is greatly appreciated
--matt

What does your object model look like, do you have a single object with data from all three tables in it?
<p>
In general because the cardinality of the tables and usage does not match, I would not recommend using multiple tables to map this. Instead define a CityNameManager class that preloads and stores all of the city names for each state, (possible lazy initializing each set of cities per state). Your getCityName() method in your class would then just use this manager.
<p>
You could map the multiple tables but it may be difficult, and would most likely need to be read-only because I don't think you want to insert into the table2 or 3. You basically have a foreign key table1.stateCode => table2.stateCode, (table1.cityCode, table2.stateId) => (table3.cityCode, table3.stateId). You probably cannot define this in the Mapping Workbench, so would need to use the ClassDescriptor code API and an amendment method. If you can't get the foreign keys to work you can always use the descriptor multipleTableJoinExpression and define the join directly.
<p>
You could also define a OneToOneMapping to the CityName from your object using the cityCode and using a selectionCriteria() on your mapping to provide an expression that uses the getTable() method to join to the intermediate table.
<p>
<p>---
<p>James Sutherland

Read records from VALUES OBJECT using the INTERATOR

Hi
I'm trying to read records from my value object with interator these way:
ValidaUsu usuVO = new ValidaUsu();
for (Iterator it = usuVO it.hasNext(); ) {
System.out.println(" User from VO: " + usuVO.getUsuario());
But i don't know what i`m doing wrong ?
Could help me?
Thanks

Hi Gajendra,
You can mainly read records from MDM (in a DDIC structure) using ABAP API's using the following function modules/methods:
1. RETRIEVE: This is used to generically retrieve records from tables. Attributes and Values can also be retrieved.
2. RETRIEVE SIMPLE: Retrieve records from MDM in a simple way.( simple data types).
3. RETRIEVE CHECKOUT: Retrieves all checked out ID's.
4. RETRIEVE ATTRIBUTES: Retrieves attribute(s) from a Taxanomy table.
You will find all these methods in the following interface
Interface : IF_MDM_CORE_SERVICES
Hope it helps.
*Please reward points if found useful.
Thanks and Regards
Nitin Jain

Using an object in distributed env

Hi,
We developed an IMAP based application in single server JBOSS env. we are using a hashmap to store some information which shall be used by all the users of the application.
Now we have to convert the application to distributed JBOSS (on different jvm's), please tell me what is the best approach to access the above hashmap from two JBOSS instances.
Thanks

If you doType name1 = new Type(true);
Type name2 = new Type(false);
and1 = new LogicAnd(name1, name2);Your object references will look like this:           ---------
           | -----|
name1 -----+->|true ||
           | -----|
           |         |
           | -----|
name2 -----+->|false||
           | -----|
and1 ----->|         |
           ---------Now if you'd assign a new value to "name2", by doingname2 = new Type(true);Your object references will now look like this:           ---------
           | -----|
name1 -----+->|true ||
           | -----|
           |         |
           | -----|
           | |false||
           | -----|
and1 ----->|         |
name2 ------->|true |
              -----Note that the old false Type will still be in "and1", and that "name2" will just get a new instantce of a Type object assigned to it.

Passing "Value Objects" from one JSP to next (2)

          Someone posted a response from BEA which has since disappeared, it was no different
          from what I was doing and it I still can't get it to store the information in
          the Value Object.
          I get values (true/false) from a Radio button on a FORM in a JSP, press a "Next
          Step" Button.
          I have a "Value Object" in JSP_1, which I use the setters to store various information
          obtained from the <FORM>. I then "jsp:forward" to JSP_2, set different information
          and then I "jsp:forward" to JSP_3 & so on. At the end of the JSP chain only the
          last setter is has the value "true", all the other values are false, despite all
          being "set" to "true".
          The "Value Object" is not storing the information set in previous JSPs. When I
          initially create the "value object" I use;
          <jsp:useBean id="myVO" class="uk.co.notify.valueobjects.MyVO" scope="request"
          />
          <jsp:setProperty name="myVO" property="*"/>
          In JSP_2 JSP999 I don't use <jsp:setProperty> I let the setter in the VO do
          it.
          I am using WebLogic 6.1 sp2 under Windows 2K Pro.
          Any pointers. Thanks.
          [att1.html]


Ok. here's the difference.
          Hitting submit is altogether a different "new" http request. It will send a
          new request from your browser to the server. Whereas, the jsp:forward is
          within the server itself.
          So the VO object whose scope is set to "request" will not retain its values
          between 2 http request.
          For such kind of parameter passing, you could very well store the info. in
          user's session object.
          I hope this helps.
          Best Regards,
          Narayan Anand
          Developer Relations Engineer
          BEA Systems, Inc.
          "Roger Lee" <[email protected]> wrote in message
          news:[email protected]...
          >
          > If I put the jsp:forward statement in all my JSPs before I test for my
          request;
          >
          > <%
          > if ( request.getParameter("SubmitStep2") != null ) {
          > String sParameter2 = request.getParameter("SubmitStep2");
          > if (sParameter2.equals("Next Step")) {
          > // CODE ETC
          > }
          > }
          >
          > The jsp will chain right to the last JSP and all the values set in my
          ValueObject
          > will remain set.
          >
          > Why does hitting a submitt button;
          >
          > <input type="submit" name="SubmitStep2" value="Next Step">
          >
          > cause the VO to lose previous stored values.
          >
          > Any information would be appreciated.
          >
          > Roger Lee
          >
          >
          > "Roger Lee" <[email protected]> wrote:
          > >
          > >Narayan,
          > >
          > >I got your example working fine.
          > >
          > >I added a few more debug statements and it appears that as I enter JSP
          > >2 the value
          > >"set" in JSP 1 is stored okay (boolean true).
          > >
          > >However after the "submit" of the button in JSP which forwards us to
          > >JSP 3 is
          > >pressed all the values are reset to their default value (false).
          > >
          > >
          > >"Narayan Anand" <[email protected]> wrote:
          > >>Hi Roger,
          > >>
          > >>I will look into your code.
          > >>In the meantime, pls try my test case in your system and see if you
          > >can
          > >>run
          > >>that without any problem.
          > >>
          > >>Best Regards,
          > >>Narayan Anand
          > >>Developer Relations Engineer
          > >>BEA Systems, Inc.
          > >>
          > >>"Roger Lee" <[email protected]> wrote in message
          > >>news:[email protected]...
          > >>>
          > >>> Narayan,
          > >>>
          > >>> Thanks for your reply. My code seems to be the same as yours! I still
          > >>can't get
          > >>> the JSPs to "set" the VO and pass it down the chain of JSPs. When
          > >I
          > >>get
          > >>the last
          > >>> JSP the first three have the boolean value set to false, whilst the
          > >>last
          > >>one is
          > >>> set to the value chosen (true).
          > >>>
          > >>> I have attached the JSPs and VO in the attached ZIP file. It must
          > >be
          > >>something
          > >>> obvious, which I can't see!
          > >>>
          > >>> Regards,
          > >>>
          > >>> Roger Lee
          > >>>
          > >>>
          > >>> "Narayan Anand" <[email protected]> wrote:
          > >>> >
          > >>> >
          > >>> >
          > >>> >------=_NextPart_001_02EB_01C257F2.2EC54EA0
          > >>> >
          > >>> >Hi Roger,
          > >>> >
          > >>> >I can still view my previous reply to your post.
          > >>>
          >
          >>>http://216.148.48.100/cgi-bin/dnewsweb?cmd=3Darticle&group=3Dweblogic.dev
          =
          > >>> >eloper.interest.jsp&item=3D10138&utag=3D
          > >>> >
          > >>> >Just now I tested this again.
          > >>> >WLS6.1SP2 on Win2k.
          > >>> >
          > >>> >JSP1 - sets one value using setProperty tag.
          > >>> >JSP2 - sets second property using the VO's setter.
          > >>> >JSP3 - retrieve and prints the values using the VO's getters and
          > >also
          > >>> >=
          > >>> >using the getProperty tag.
          > >>> >
          > >>> >attached are all the jsp's and value object.
          > >>> >Please test it in your environment. It should work.
          > >>> >Then compare it with your code to see the difference.
          > >>> >
          > >>> >I hope this will help to resolve the issue.
          > >>> >
          > >>> >Regards,
          > >>> >Narayan Anand
          > >>> >Developer Relations Engineer
          > >>> >BEA WebLogic Support
          > >>> >
          > >>> >
          > >>> >
          > >>> >
          > >>> >
          > >>> > "Roger Lee" <[email protected]> wrote in message =
          > >>> >news:[email protected]...
          > >>> >
          > >>> > Someone posted a response from BEA which has since disappeared,
          > >>it
          > >>> >was =
          > >>> >no different
          > >>> > from what I was doing and it I still can't get it to store the
          > >=
          > >>> >information in
          > >>> > the Value Object.
          > >>> >
          > >>> > I get values (true/false) from a Radio button on a FORM in a JSP,
          > >>=
          > >>> >press a "Next
          > >>> > Step" Button.
          > >>> >
          > >>> > I have a "Value Object" in JSP_1, which I use the setters to store
          > >>> >=
          > >>> >various information
          > >>> > obtained from the <FORM>. I then "jsp:forward" to JSP_2, set
          different
          > >>> >=
          > >>> >information
          > >>> > and then I "jsp:forward" to JSP_3 & so on. At the end of the JSP
          > >>chain
          > >>> >=
          > >>> >only the
          > >>> > last setter is has the value "true", all the other values are
          false,
          > >>> >=
          > >>> >despite all
          > >>> > being "set" to "true".
          > >>> >
          > >>> > The "Value Object" is not storing the information set in previous
          > >>=
          > >>> >JSPs. When I
          > >>> > initially create the "value object" I use;=20
          > >>> >
          > >>> > <jsp:useBean id=3D"myVO" class=3D"uk.co.notify.valueobjects.MyVO"
          > >>=
          > >>> >scope=3D"request"
          > >>> > />=20
          > >>> > <jsp:setProperty name=3D"myVO" property=3D"*"/>=20
          > >>> >
          > >>> > In JSP_2 JSP999 I don't use <jsp:setProperty> I let the setter
          > >>in
          > >>> >=
          > >>> >the VO do
          > >>> > it.
          > >>> >
          > >>> > I am using WebLogic 6.1 sp2 under Windows 2K Pro.=20
          > >>> >
          > >>> > Any pointers. Thanks.=20
          > >>> >
          > >>> >
          > >>> >------=_NextPart_001_02EB_01C257F2.2EC54EA0
          > >>> >
          > >>> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
          > >>> ><HTML><HEAD>
          > >>> ><META http-equiv=3DContent-Type content=3D"text/html; =
          > >>> >charset=3Diso-8859-1">
          > >>> ><META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR>
          > >>> ><STYLE></STYLE>
          > >>> ></HEAD>
          > >>> ><BODY bgColor=3D#ffffff>
          > >>> ><DIV><FONT face=3DArial size=3D2>Hi Roger,</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>I can still view my previous reply
          > >>to
          > >>> >=
          > >>> >your=20
          > >>> >post.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2><A=20
          > >>>
          >href=3D"http://216.148.48.100/cgi-bin/dnewsweb?cmd=3Darticle&group=3D=
          > >>> >weblogic.developer.interest.jsp&item=3D10138&utag">http://216.148=
          > >>>
          >..48.100/cgi-bin/dnewsweb?cmd=3Darticle&group=3Dweblogic.developer.int=
          > >>> >erest.jsp&item=3D10138&utag</A>=3D</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>Just now I tested this =
          > >>> >again.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>WLS6.1SP2 on Win2k.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>JSP1 - sets one value using
          setProperty
          > >>> >=
          > >>> >
          > >>> >tag.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>JSP2 - sets second property using
          > >>the
          > >>> >=
          > >>> >VO's=20
          > >>> >setter.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>JSP3 - retrieve and prints the
          values
          > >>> >=
          > >>> >using the=20
          > >>> >VO's getters and also using the getProperty tag.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>attached are all the jsp's and
          value=20
          > >>> >object.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>Please test it in your environment.
          > >>> >It =
          > >>> >should=20
          > >>> >work.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>Then compare it with your code to
          > >>see
          > >>> >=
          > >>> >the=20
          > >>> >difference.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>I hope this will help to resolve
          > >>the=20
          > >>> >issue.</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2>Regards,<BR>Narayan
          Anand<BR>Developer
          > >>> >=
          > >>> >Relations=20
          > >>> >Engineer<BR>BEA WebLogic Support</FONT></DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><DIV><FONT face=3DArial size=3D2></FONT> </DIV>
          > >>> ><BLOCKQUOTE=20
          > >>> >style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px;
          > >>=
          > >>> >BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
          > >>> > <DIV>"Roger Lee" <<A=20
          > >>> > href=3D"mailto:[email protected]">[email protected]</A>> wrote
          > >in
          > >>> >=
          > >>> >message <A=20
          > >>> > =
          > >>>
          >
          >>>href=3D"news:[email protected]">news:[email protected]
          =
          > >>> >a.com</A>...</DIV><BR>Someone=20
          > >>> > posted a response from BEA which has since disappeared, it was
          > >no=20
          > >>> > different<BR>from what I was doing and it I still can't get it
          > >to
          > >>=
          > >>> >store the=20
          > >>> > information in<BR>the Value Object.<BR><BR>I get values
          (true/false)
          > >>> >=
          > >>> >from a=20
          > >>> > Radio button on a FORM in a JSP, press a "Next<BR>Step" =
          > >>> >Button.<BR><BR>I have=20
          > >>> > a "Value Object" in JSP_1, which I use the setters to store
          various=20
          > >>> > information<BR>obtained from the <FORM>. I then "jsp:forward"
          > >>> >to =
          > >>> >JSP_2,=20
          > >>> > set different information<BR>and then I "jsp:forward" to JSP_3
          > >&
          > >>> >=
          > >>> >so on. At=20
          > >>> > the end of the JSP chain only the<BR>last setter is has the value
          > >>=
          > >>> >"true", all=20
          > >>> > the other values are false, despite all<BR>being "set" to =
          > >>> >"true".<BR><BR>The=20
          > >>> > "Value Object" is not storing the information set in previous JSPs.
          > >>> >=
          > >>> >When=20
          > >>> > I<BR>initially create the "value object" I use; =
          > >>> ><BR><BR><jsp:useBean=20
          > >>> > id=3D"myVO" class=3D"uk.co.notify.valueobjects.MyVO" =
          > >>> >scope=3D"request"<BR>/>=20
          > >>> > <BR><jsp:setProperty name=3D"myVO" property=3D"*"/> <BR><BR>In
          > >>> >=
          > >>> >JSP_2=20
          > >>> > JSP999 I don't use <jsp:setProperty> I let the setter in the
          > >>> >=
          > >>> >VO=20
          > >>> > do<BR>it.<BR><BR>I am using WebLogic 6.1 sp2 under Windows 2K Pro.
          > >>> >=
          > >>> ><BR><BR>Any=20
          > >>> > pointers. Thanks. <BR></BLOCKQUOTE></BODY></HTML>
          > >>> >
          > >>> >------=_NextPart_001_02EB_01C257F2.2EC54EA0--
          > >>> >
          > >>> >
          > >>> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
          > >>> ><HTML>
          > >>> ><HEAD>
          > >>> ><TITLE>Reusing JavaBeans in JSP</TITLE>
          > >>> ><LINK REL=STYLESHEET
          > >>> > HREF="My-Style-Sheet.css"
          > >>> > TYPE="text/css">
          > >>> ></HEAD>
          > >>> >
          > >>> ><BODY>
          > >>> >
          > >>> ><CENTER>
          > >>> ><TABLE BORDER=5>
          > >>> > <TR><TH CLASS="TITLE">
          > >>> > Reusing JavaBeans in JSP</TABLE>
          > >>> ></CENTER>
          > >>> ><P>
          > >>> >
          > >>> ><jsp:useBean id="test" scope="request" class="hall.SimpleBean" />
          > >>> ><jsp:setProperty name="test"
          > >>> > property="message"
          > >>> > value="Hello forward WWW" />
          > >>> >
          > >>> ><jsp:forward page="/myjsp2.jsp" />
          > >>> >
          > >>> ></BODY>
          > >>> ></HTML>
          > >>> >
          > >>> >
          > >>> >
          > >>> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
          > >>> ><HTML>
          > >>> ><HEAD>
          > >>> ><TITLE>Reusing JavaBeans in JSP</TITLE>
          > >>> ><LINK REL=STYLESHEET
          > >>> > HREF="My-Style-Sheet.css"
          > >>> > TYPE="text/css">
          > >>> ></HEAD>
          > >>> >
          > >>> ><BODY>
          > >>> >
          > >>> ><CENTER>
          > >>> ><TABLE BORDER=5>
          > >>> > <TR><TH CLASS="TITLE">
          > >>> > Reusing JavaBeans in 2 JSP</TABLE>
          > >>> ></CENTER>
          > >>> ><P>
          > >>> >
          > >>> ><jsp:useBean id="test" scope="request" class="hall.SimpleBean" />
          > >>> >
          > >>> > <% test.setMessage1("Second message1 using setters"); %>
          > >>> >
          > >>> >
          > >>> ><jsp:forward page="/myjsp3.jsp" />
          > >>> >
          > >>> >
          > >>> ></BODY>
          > >>> ></HTML>
          > >>> >
          > >>> >
          > >>> >
          > >>> ><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
          > >>> ><HTML>
          > >>> ><HEAD>
          > >>> ><TITLE>Reusing JavaBeans in JSP</TITLE>
          > >>> ><LINK REL=STYLESHEET
          > >>> > HREF="My-Style-Sheet.css"
          > >>> > TYPE="text/css">
          > >>> ></HEAD>
          > >>> >
          > >>> ><BODY>
          > >>> >
          > >>> ><CENTER>
          > >>> ><TABLE BORDER=5>
          > >>> > <TR><TH CLASS="TITLE">
          > >>> > Reusing JavaBeans in 2 JSP</TABLE>
          > >>> ></CENTER>
          > >>> ><P>
          > >>> >
          > >>> ><jsp:useBean id="test" scope="request" class="hall.SimpleBean" />
          > >>> >
          > >>> ><%
          > >>> >System.out.println("\nMessage is :"+test.getMessage());
          > >>> >System.out.println("\nMessage1 is :"+test.getMessage1());
          > >>> >%>
          > >>> >
          > >>> ><H1>Message: <I>
          > >>> ><jsp:getProperty name="test" property="message" />
          > >>> ></I></H1>
          > >>> >
          > >>> ><H1>Message1: <I>
          > >>> ><jsp:getProperty name="test" property="message1" />
          > >>> ></I></H1>
          > >>> >
          > >>> >
          > >>> ></BODY>
          > >>> ></HTML>
          > >>> >
          > >>> >
          > >>> >
          > >>> >package hall;
          > >>> >
          > >>> >public class SimpleBean {
          > >>> > private String message = "No message specified";
          > >>> > private String message1 = "No message1 specified";
          > >>> >
          > >>> > public String getMessage() {
          > >>> > return(message);
          > >>> > }
          > >>> >
          > >>> > public void setMessage(String message) {
          > >>> > this.message = message;
          > >>> > }
          > >>> >
          > >>> > public String getMessage1() {
          > >>> > return(message1);
          > >>> > }
          > >>> >
          > >>> > public void setMessage1(String message1) {
          > >>> > this.message1 = message1;
          > >>> > }
          > >>> >}
          > >>> >
          > >>> >
          > >>>
          > >>
          > >>
          > >
          >

Dump - Access using NULL object reference is not possible!!!

Hi,
I'm using the BCS class for sending HTM format email so i use the below code for that its working,
DATA: gr_document      TYPE REF TO cl_document_bcs,
gr_document = cl_document_bcs=>create_document(
                      i_type    = 'HTM'
                       i_text    = t_html
                       i_importance = '5'
                       i_subject = gc_subject ).
Next task is to send the image so i'm creating an another object to the same class, below code
*Image from MIME
DATA: o_mr_api         TYPE REF TO if_mr_api.
DATA is_folder TYPE boole_d.
DATA l_img1 TYPE xstring.
DATA l_img2 TYPE xstring.
DATA l_loio TYPE skwf_io.
DATA: lo_document   TYPE REF TO cl_document_bcs.
IF o_mr_api IS INITIAL.
   o_mr_api = cl_mime_repository_api=>if_mr_api~get_api( ).
ENDIF.
CALL METHOD o_mr_api->get
   EXPORTING
     i_url              = '/SAP/PUBLIC/ZDEMO/tick.png'
   IMPORTING
     e_is_folder        = is_folder
     e_content          = l_img1
     e_loio             = l_loio
   EXCEPTIONS
     parameter_missing = 1
     error_occured      = 2
     not_found          = 3
     permission_failure = 4
     OTHERS             = 5.
CALL METHOD o_mr_api->get
   EXPORTING
     i_url              = '/SAP/PUBLIC/ZDEMO/Delete.png'
   IMPORTING
     e_is_folder        = is_folder
     e_content          = l_img2
     e_loio             = l_loio
   EXCEPTIONS
     parameter_missing = 1
     error_occured      = 2
     not_found          = 3
     permission_failure = 4
     OTHERS             = 5.
*Convert XSTRING to ITAB
DATA :lt_hex1 TYPE solix_tab,
       lt_hex2 TYPE solix_tab,
       ls_hex LIKE LINE OF lt_hex1,
       lv_img1_size TYPE sood-objlen,
       lv_img2_size TYPE sood-objlen.
CLEAR : lt_hex1, lt_hex2, ls_hex, lv_img1_size, lv_img2_size.
WHILE l_img1 IS NOT INITIAL.
   ls_hex-line = l_img1.
   APPEND ls_hex TO lt_hex1.
   SHIFT l_img1 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
WHILE l_img2 IS NOT INITIAL.
   ls_hex-line = l_img2.
   APPEND ls_hex TO lt_hex2.
   SHIFT l_img2 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
*Findthe Size of the image
DESCRIBE TABLE lt_hex1 LINES lv_img1_size.
DESCRIBE TABLE lt_hex2 LINES lv_img2_size.
lv_img1_size = lv_img1_size * 255.
lv_img2_size = lv_img2_size * 255.
*Attach Images
clear: lo_document.
lo_document->add_attachment(
   EXPORTING
     i_attachment_type     = 'png'                  " Document Class for Attachment
     i_attachment_subject = 'img1'                " Attachment Title
     i_attachment_size     = lv_img1_size           " Size of Document Content
     i_att_content_hex     = lt_hex1 " Content (Binary)
lo_document->add_attachment(
   EXPORTING
     i_attachment_type     = 'png'                  " Document Class for Attachment
     i_attachment_subject = 'img2'                " Attachment Title
     i_attachment_size     = lv_img2_size           " Size of Document Content
     i_att_content_hex     = lt_hex2 " Content (Binary)
but it throws the dump " Access using NULL object reference is not possible" when i tries to access for method add_attachment...
Thanks,
Siva

Yes there is commit work after that, Below code
      gr_document = cl_document_bcs=>create_document(
                       i_type    = 'HTM'
                        i_text    = t_html
                        i_importance = '5'
                        i_subject = gc_subject ).
*Image from MIME
DATA: o_mr_api         TYPE REF TO if_mr_api.
DATA is_folder TYPE boole_d.
DATA l_img1 TYPE xstring.
DATA l_img2 TYPE xstring.
DATA l_loio TYPE skwf_io.
DATA: lo_document   TYPE REF TO cl_document_bcs.
IF o_mr_api IS INITIAL.
   o_mr_api = cl_mime_repository_api=>if_mr_api~get_api( ).
ENDIF.
CALL METHOD o_mr_api->get
   EXPORTING
     i_url              = '/SAP/PUBLIC/ZDEMO/tick.png'
   IMPORTING
     e_is_folder        = is_folder
     e_content          = l_img1
     e_loio             = l_loio
   EXCEPTIONS
     parameter_missing = 1
     error_occured      = 2
     not_found          = 3
     permission_failure = 4
     OTHERS             = 5.
CALL METHOD o_mr_api->get
   EXPORTING
     i_url              = '/SAP/PUBLIC/ZDEMO/Delete.png'
   IMPORTING
     e_is_folder        = is_folder
     e_content          = l_img2
     e_loio             = l_loio
   EXCEPTIONS
     parameter_missing = 1
     error_occured      = 2
     not_found          = 3
     permission_failure = 4
     OTHERS             = 5.
*Convert XSTRING to ITAB
DATA :lt_hex1 TYPE solix_tab,
       lt_hex2 TYPE solix_tab,
       ls_hex LIKE LINE OF lt_hex1,
       lv_img1_size TYPE sood-objlen,
       lv_img2_size TYPE sood-objlen.
CLEAR : lt_hex1, lt_hex2, ls_hex, lv_img1_size, lv_img2_size.
WHILE l_img1 IS NOT INITIAL.
   ls_hex-line = l_img1.
   APPEND ls_hex TO lt_hex1.
   SHIFT l_img1 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
WHILE l_img2 IS NOT INITIAL.
   ls_hex-line = l_img2.
   APPEND ls_hex TO lt_hex2.
   SHIFT l_img2 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
*Findthe Size of the image
DESCRIBE TABLE lt_hex1 LINES lv_img1_size.
DESCRIBE TABLE lt_hex2 LINES lv_img2_size.
lv_img1_size = lv_img1_size * 255.
lv_img2_size = lv_img2_size * 255.
*Attach Images
create object lo_document type cl_document_bcs.
lo_document->add_attachment(
   EXPORTING
     i_attachment_type     = 'png'                  " Document Class for Attachment
     i_attachment_subject = 'img1'                " Attachment Title
     i_attachment_size     = lv_img1_size           " Size of Document Content
     i_att_content_hex     = lt_hex1 " Content (Binary)
lo_document->add_attachment(
   EXPORTING
     i_attachment_type     = 'png'                  " Document Class for Attachment
     i_attachment_subject = 'img2'                " Attachment Title
     i_attachment_size     = lv_img2_size           " Size of Document Content
     i_att_content_hex     = lt_hex2 " Content (Binary)
       "Add document to send request
       CALL METHOD gr_send_request->set_document( gr_document ).
       TRY.
         CALL METHOD gr_send_request->SET_SEND_IMMEDIATELY
           EXPORTING
             I_SEND_IMMEDIATELY = 'X'.
*    CATCH CX_SEND_REQ_BCS INTO BCS_EXCEPTION .
**Catch exception here
       ENDTRY.
       DATA: LO_SENDER TYPE REF TO IF_SENDER_BCS VALUE IS INITIAL.
       TRY.
         LO_SENDER = CL_SAPUSER_BCS=>CREATE( SY-UNAME ). "sender is the logged in user
* Set sender to send request
         gr_send_request->SET_SENDER(
         EXPORTING
         I_SENDER = LO_SENDER ).
*    CATCH CX_ADDRESS_BCS.
****Catch exception here
       ENDTRY.
       "Send email
       CALL METHOD gr_send_request->send(
         EXPORTING
           i_with_error_screen = 'X'
         RECEIVING
           result              = gv_sent_to_all ).
       IF gv_sent_to_all = 'X'.
         WRITE 'Email sent!'.
       ENDIF.
       "Commit to send email
       COMMIT WORK.
       "Exception handling
     CATCH cx_bcs INTO gr_bcs_exception.
       WRITE:
         'Error!',
         'Error type:',
         gr_bcs_exception->error_type.
   ENDTRY.

Shall I use Value Objects???

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