EVS in OVS

Hi All,
I have a requirement to use OVS search help in Web Dynpro and provide EVS/OVS search help within it on search fields.
I have followed the method provided by Valery Silaev
URL:/people/valery.silaev/blog/2006/07/18/ovs-rfc but it only give me a dropdown list.
I need to know how to setup EVS/OVS within OVS advanced search fields.
Thanks for your help.
Regards,
Lam

Lam,
If I understand you correctly you want to use EVS for input fields (query parameters) inside OVS window.
This is not possible.
OVS implementation supplied with WD Java creates UI controls automatically.
- For attributes of type boolean it creates CheckBoxes.
- For attributes of type string without value help (simple type without enumeration) it creates InputFields.
- For attributes of type string with value help (simple type with enumeration) it creates DropDownByKey (this is what you see).
There is no way to alter this behavior.
Valery Silaev
SaM Solutions
http://www.sam-solutions.net

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Hi all!
I am new to WebDynpro but Ive got a closer look to the tutorials but since I didnt found a hint for my problem I try it this way! The situation is the following:
I am using selector fields to support the user with some constants to choose from but it is still possible to enter the data directly into the input field.
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Reiner,
I cannot fully understand your requirements, but probably my solution described in blog post <a href="/people/valery.silaev/blog/2006/03/10/minus-evs-plus-ovs-value-help-smart-input">Minus EVS, Plus OVS == value help + "smart" input</a> will help you.
My idea was to use OVS instead of EVS with pair of calculated "proxy" attribute and real attribute. Real attribute has enumeration, proxy attribute used for input. In my solution real attribute is always synchronized with proxy attribute...
Valery Silaev
EPAM Systems
http://www.NetWeaverTeam.com

OVS question for experts

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I've implemented OVS but I need to use it as a value help instead of an object selector. Therefore to be perfect OVS should directly print out results since there is no need to do a search before. So is there a way to directly jump to the onQuery hook method? Apparently the OVS output node seems to be initialized after applyInputValues(...) is called. I can't add something to the output node until onQuery(...) is called. Which means you have to click on the "Go" button just to see some static result values. Which is quite annoying for this use case. Has anyone already solved this problem?
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Robert

Robert,
In WD ABAP it is possible to replace standard OVS component, but in WD Java -- no way. I played a lot with OVS -- there are numerous enchantments possible (see /people/valery.silaev/blog/2006/07/18/ovs-rfc , /people/valery.silaev/blog/2006/03/10/minus-evs-plus-ovs-value-help-smart-input , /people/valery.silaev/blog/2005/08/15/ovs-reloaded), almost anything but removal of that "GO" button and pre-populated query
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Valery Silaev
SaM Solutions
http://www.sam-solutions.net

OVS Search(F4)

Hi all,
I had gone through the pdf given fir OVS Search(F4)and i downloded the ready to use project.I deployed successfully and runned the project.But the problem is After giving AirlineId,a special window is comming with table ,but no data is there in that table.
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Hi Padma,
Actually it depends on ur requirement whether u want to use EVS or OVS .If u have huge data to show in f4 ,u should go for OVS
check these links:
<a href="https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/web%20dynpro%20valuehelp%20using%20object%20value%20selector.pdf">OVS</a>
<a href="https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/value%20help%20in%20web%20dynpro%20applications.pdf">value help</a>
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/webcontent/uuid/28113de9-0601-0010-71a3-c87806865f26?rid=/library/uuid/49f2ea90-0201-0010-ce8e-de18b94aee2d#51 [original link is broken] [original link is broken]
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Thanks ,
F.F

Hi FF
Please go through these links
Re: Extended Value Selector
/people/valery.silaev/blog/2006/03/10/minus-evs-plus-ovs-value-help-smart-input
Re: Extended Value Selector
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A customer of ours has some Z transactions in its R/3 system, which basically present a very simplyfied version of MIGO. This Z transaction makes extencive use of Search Helps, which in some cases have been extended.
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Greetings, Walter.

Hi Walter,
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OVS https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/web%20dynpro%20valuehelp%20using%20object%20value%20selector.pdf
Value help
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/wd%20java/wd%20tutorials/value%20help%20in%20web%20dynpro%20applications.pdf
EVS
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f0e57440-ec1c-2a10-36b1-fe92341f98c4
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Hi
I have a custom development which consumes a custom RFC from R/3 system. Now this View has got plenty of fields that have an Search Help(F4) option. They are mapped to the Standard structures and Tables present in the RFC. I am not able to get a Search Help for these fields(Though search help is available in R/3 screen for the same fields).
I have read about SVS, EVS and OVS methods in WebDynpro. Now if I have to enable these search helps, am i left only with the option of using these alone. Since I am talking about Standard Tables & Structures in RFC, I have no option of modifying them.
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Hi
Try This Thread
Re: Search Help in Web Dynpro
Re: Attaching Search helps dynamically to an attribute
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Creating EVS , OVS with RFC in WebDynpro Java (F4)

Hello All,
I am struggling with EVS creation through aRFC. I followed all the tutorials given on the SDN, but of no use till now.
I have two DC's rmmodel and rmcomponents
I have created Model in the rmmodel DC through aRFC and added it in the public part. further I added the rmmodel DC in rmcomponent DC's used DC list. Finally i added rmmodel in the used models list of rmcomponent DC.
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Now I want to create an EVS with InputField , in my case i want to populate EVS from R/3 Table dynamically. Till now am getting a simple InputField with the first record selected on running my application.
Please Help.
Please avoid posting links to other similar threads, as i have already checked most of the popular threads, blogs and tried my hands on tutorials given on sdn library.
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Amol

Hi Biswal,
I am trying to do the above but having some problem with the "<attributeName>"
I created a custom controller and a view then i did the model binding and context binding.
In my custom controller EvsController I have the following context.
= Context
===Test_xyz_xyz_Input
=====Output
=======Lt_xyz_xyz
Short
here my attributename is Short so i am writing the following code in the EvsController's wdDoInit()
IModifiableSimpleValueSet valueset =
wdContext.nodeLt_xyz_xyz().getNodeInfo().getAttribute(Short).getModifiableSimpleType().getSVServices().getModifiableSimpleValueSet();
The problem is, it's not able to identify "Short" and giving me an error "Short can not be resolved"
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Amol

OVS without input parameters

Hi all,
I have to implement a search-help pop-up for an input field in my application. But the RFC which is used doesnt accept any import parameters. The result should get prepopulated on opening the window. So, is it possible to use OVS in this case? If this is not possible, is there any alternative available??
Since the result is too big, its not possible to use EVS.
Thanks n regards,
Shyam.

Shyam,
Please go through these,
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/391ee590-0201-0010-1c89-f1193a886421
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/e038cf90-0201-0010-0a9a-ec69262a1564
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cf40cf90-0201-0010-4a85-e5a207b900d8
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/2833ce90-0201-0010-f1af-d3cfe1155b16
/people/vikram.singh6/blog/2007/01/10/generic-value-help-services-in-web-dynpro--a-birds-eye-view
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/58a7e390-0201-0010-abb1-8eec7eb7a2ec
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Ramganesan K

How to Implement the OVS in a table

Hai
I want to implement a table with one column with OVS. But if I want to enable OVS, I can not create a table because of the cardinality of the node-element of the context.
My table Node cardinality is 0..n because we have many rows in a table.
i have introduced EVS in one column.it works fine.
Because We can not set our own inputfield or button in EVS Pop Up.
If we select the cardinality "1..1" the OVS works but the table only can have one row. If we select the cardinality "0..n" the table can have "n" rows but the OVS is disabled.
Did anybody implements a similar application? Please help
i got the following error
When i call WDValueServices.addOVSExtension with ovsStartupAttributes, do this error: MappedAttributeInfo ViewName): must not modify the datatype of a mapped attribute
Message was edited by:
        Dhinakaran Jeyachandran

Hi,
If you think it's cardinality issue thenchange it to 1:n.
Otherwise do like this.
Create a custom controller first say OVSCustomController
and do following things for a column:-
Add this controller in your view.
IPublicOVSCustomController.IContextNode ovsContext = wdThis.wdGetOVSCustomControllerController().wdGetContext();
Create input and output nodes for ovs.
IWDNodeInfo ovsInputNodeInfo = ovsNodeInfo.addChild(columnName+"Input",null,true, CMICardinality.ONE,CMICardinality.ONE_TO_MANY, true, null);
IWDNodeInfo ovsOutputNodeInfo = ovsNodeInfo.addChild(columnName+"OutPut",null,true, CMICardinality.ONE_TO_MANY,CMICardinality.ONE_TO_MANY, true, null);
Create Attributes for this field in the input and output nodes.
IWDAttributeInfo attrInputInfo = ovsInputNodeInfo.addAttribute(field,datatype of field);
IWDAttributeInfo attrOutputInfo = ovsOutputNodeInfo.addAttribute((relatedfield,datatype of field);
set the attribute Info array:-
IWDAttributeInfo[] attrInfoArray = new IWDAttributeInfo[1];
          attrInfoArray[0] = attribute info of the column
Now call the ovs service :-
WDValueServices.addOVSExtension("",attrInfoArray,ovsInputNode,ovsOutputNode,listener);
Your ivs window will be opened by this.
Feel free for any queries regarding this.
Regards,
Praveen
Message was edited by:
        Praveen Kumar Pandey
Message was edited by:
        Praveen Kumar Pandey

Trouble with OVS

Hello Experts,
I have the following situation, im trying to use a OVS in a test application that i'm built in. The thing is, that i only want that the search popup appear, i'm using nodes that doesnt have anything (data) just the structure for my test, but my problem is after follow the tutorial (without implementing the RFC execute part), the app shows me the value help but when i click it, dont show me the advanced search window (OVS). Why is that? am i missing something? i know that my nodes doesnt have to be full at first because, when i choose my value help (as the tutorial said), i dont have anything in my nodes until i put some search values and execute the query... please help me. Im not using a customer controller, and i did exactly what the tutorial explain...its urgent i wil wait for your answer!!!
thanx
MC

Hello,
You can find very cool info (weblog, threads, tutorials, etc) looking for OVS in the forum, also this links are very helpfull and made my day when i was trying to implement OVS (awsome!! by the way!!).
Hi,
Pl go through this links
/docs/DOC-8061#51 [original link is broken]
OVS
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/user-interface-technology/wd%20java/wdjava%20archive/web%20dynpro%20valuehelp%20using%20object%20value%20selector.pdf
EVS
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/user-interface-technology/wd%20java/wdjava%20archive/value%20help%20in%20web%20dynpro%20applications.pdf
I hope that this works for you...also if you have any question you can ask me
Regards
Mariana

How tp populate EVS from a Model node attribute

Hi All,
i have some records in the model table mapped to a node in the view. i wanna to use the OVS to select the particular attribute but don't know how to do it.
i have bounded that particular column to the inputField but when i write this code
IWDAttributeInfo atInfo =
wdContext.nodeActivity().getNodeInfo().getAttribute( IPrivateEVSView.IActivityElement.SYNC__KEY);
ISimpleType synckeyType = atInfo.getSimpleType();
ISimpleValueSet valueset = synckeyType.getSVServices().getValues();
i get the NUllPointerException at the last line.
How to get the ValueSet in this case and populate the OVS.
Plz help
Rgds.
Vilish
I have studied EVS tutorial at SDN.

Hi Vilish,
OVS is quite different thing, what you are trying to do here is to create modifiable value set (SVS), right?
Then you have to use:
ISimpleTypeModifiable type =
atInfo.getModifiableSimpleType();
IModifiableSimpleValueSet msvs =
type.getSVServices().getModifiableSimpleValueSet();
msvs.put(<key>, <value>);
Also check that type of attribute is simple type (string, integer etc) or derivate thereof.
Valery Silaev
EPAM Systems
http://www.netweaverteam.com/
P.S. If you really need to use OVS then corresponding tutorial is https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/uuid/5dcbe990-0201-0010-2c99-a2bc9e61acfc

EVS in OVS

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