Data Validation in web dynpro

Hi,
Can anyone explain how to do data validation for the i/p fields in the WD View???Pleasegive an example with coding.
Thanks!

Hi,
As Thomas pointed out in his reply that do the validation at WDDOBEFOREACTION method
say you have a date to validate:
DATA lo_nd_importing TYPE REF TO if_wd_context_node.
DATA lo_el_importing TYPE REF TO if_wd_context_element.
DATA ls_importing TYPE wd_this->element_importing.
DATA lv_startdate LIKE ls_importing-startdate.
navigate from <CONTEXT> to <IMPORTING> via lead selection
lo_nd_importing = wd_context->get_child_node( name = wd_this->wdctx_importing ).
get element via lead selection
lo_el_importing = lo_nd_importing->get_element( ).
get single attribute
lo_el_importing->get_attribute(
 EXPORTING
 name = `STARTDATE`
 IMPORTING
 value = lv_startdate ).
if lv_startdate is initial.
get message manager
DATA lo_api_controller TYPE REF TO if_wd_controller.
DATA lo_message_manager TYPE REF TO if_wd_message_manager.
lo_api_controller ?= wd_this->wd_get_api( ).
CALL METHOD lo_api_controller->get_message_manager
RECEIVING
 message_manager = lo_message_manager
report message
CALL METHOD lo_message_manager->report_error_message
EXPORTING
 message_text = 'Please input start date'
 params =
 msg_user_data =
 is_permanent = ABAP_FALSE
 scope_permanent_msg = CO_MSG_SCOPE_CONTROLLER
 view =
 show_as_popup =
 controller_permanent_msg =
 msg_index =
 cancel_navigation = 'X' "this parameter will stop the program at the same view
endif.
this will stop the user at the same view and will give the error message out.....
you can also check the code wizard and try different type of methods to give out the error messages....the code wizard is right beside the external break point button...
Thanks...
AS.

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How to do date validation in Web Dynpro java

Hi
We have one requirement that One input field with date type is there.When we take Date type input field then in web dynpro Date navigater is appearing by default.Our requirement is if user enters the date manually in the input filed instead of chossing the date from the Date navigator then how we will do the following date validations manually:
a. If user is entering the date in any format then it should convert it to dd.mm.yy format.
b. How to do leap year validation?Suppose user is entering 29.02.20007 then it should display Invalid date.
c. How to do the follwing date validation:
 Let's say that current running hours(Text Vie
w) on a given engine is 100, entered on 10-Jun-2008(Running hour date-Text view)).
-On 15-Jun-2008(New Running Hour Date-input field), I try to enter a value of 300 hours(New running hour-input field).
-This is impossible, because only 5x24=120 hrs has passed from the previous update.
-Hence, in this case the maximum value I can enter is 100+120=220.
Can anybody help me in solving the above 3 date validation?

Hi Susmita,
For your 3 rd requirement...
Initially you will be storing the first date entered by the user right???
Say that date is D1. and user entered hours is H1.
now after some days at day D2 user again trying to enter some hours say H2. Now you have to restrict user from entering hours which are
greater than 24*D2-D1....
so now you have to get D2-D1....
For this....
long l1=youdate1.getTime(); // This will convert your Date D1 into long...
then,
Date d=new Date(System.currentTimeMillis());
long l2=d.getTime(); //which is a long value of current date...
So Now l2-l1 will give you number of days between past date and today's date...
So On Save you check for
if((l2-l1)*24<(H2-H1))
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Hope this will help you....
Regards,
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What kind of data types in Web Dynpro can be bound to Interactive Form?

Hello
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Hi,
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if (wdContext.currentContextelement.reason == true)
ur validations.....
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How can I set the data binding between Web Dynpro & Database table

Dear friend,
I am a beginner of Web Dynpro. I want to develop my simple project like these:
1. Create my own database table via Dictionary Project such as TAB_USER and have 3 fields: USER_ID, USER_NAME, USER_POSITION and I have already deployed & archived it.
2. Create my own Web Dynpro Project, and create the input fields as User ID, User name, User position and icon 'Save' on the selection screen and I have deployed it already.
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SeMs

Hi,
You can write your own connection class for establishing the connection with DB.
Ex:
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static Connection con = null;
public static Connection getConnection() {
try{
Context ctx = new InitialContext();
DataSource ds = (DataSource) ctx.lookup("jdbc/TSPAGE");
con = ds.getConnection();
return con;
}catch(Exception e){
return null;
You can place the above class file in src folder and you can use this class in webdynpro.
You can have another UserInfo class for reading and writing the data into the DB .
Regards, Anilkumar
PS : Refer
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/java/simple java bean generator for database.pdf
Message was edited by: Anilkumar Vippagunta

How to get the ep user information data in the web dynpro?

Hi all
I want to create a web dynpro application on EP.I want to get the ep user information data in the web dynpro.How can I do?Thanks.

Lin,
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wdContext.currentContextElement().setXXXX(objUser.getUniqueName());
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com.sap.security.api.perm.jar
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Hi experts,
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Advance Thanks,
Namrata.

Hi Namrata,
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Client side validations in web dynpro

Hi experts,
can anybody tell me How we perform client side validations in web dynpro ?
Thanks,
Prasad.

Hi Prasad,
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Data validation for Date Field in Web Dynpro ABAP

Hi ,
In my WDA i want to perform data validation for date filed. (i.e. While creating a new record i have to check the Start Date should be always lesser than End Date.)
If u ll enter the wrong date it should validate the Date and throw an error message.
Please Reply soon its urgent.
Thanks,
Deepika

Hi,
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Then write the following condition.
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Error message.
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dear all,
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thanks,
jyothi.

hi jyothi,
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I am giving simplest way of doing this validation(it may fullfil your requirement also)
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DATA lo_api_controller     TYPE REF TO if_wd_controller.
lo_api_controller ?= wd_this->wd_get_api( ).
lo_message_manager = lo_api_controller->get_message_manager( ).
DATA var1 type string.
DATA: node TYPE REF TO if_wd_context_node.
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node->get_attribute( EXPORTING name = ' VALUE'
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IF var1 IS INITIAL.
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Hi,
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use the below code to replace the MS name:
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DATA    lv_split1 TYPE char255.
DATA    lv_split2 TYPE char255.
DATA : lv_string TYPE string,
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lv_temp_str = lv_split2.
SPLIT lv_temp_str AT '.' INTO lv_split1 lv_split2.
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Hi all,
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ilan

Hi
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See this thread
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Hello,
I'm trying to create a lot of validations in a web dynpro App.
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Regards
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Hi SU,
I wrote the following code just to check if this method works or not. Well, this method does work.
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"That's why I am passing null as first parameter.
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Edited by: Arjun Singh Thakur on Dec 9, 2011 11:32 AM

Data Validation in web dynpro

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