SAP Webdynpro ABAP Interview Questions Part 3

2/19/2014 SAP Webdynpro ABAP Interview Questions Part 3

http://sap-interview-questions-and-answers.blogspot.in/2012/07/sap-webdynpro-abap-interview-questions.html 1/12

SAP ABAP Intervi 11

SAP ABAP Intervi 32

BDC Interview Q 16

SAP ALE IDocs i 25

SAP Webdynpro 25

SAP Web Dynpro 21

SAP Webdynpro 19 NowwecometothetoughersideofwebDynpro.Ihavetriedtoputtogethersomeconceptsfromthepointofviewofaninterview.That'swhyyouwontfindthedetailsherebutanoverview.

Question1:WhatisWebDynproComponentUsage?RealworldbusinessscenariosarequitecomplexandmayinvolvemultipleWebDynproComponents.WhiledealingwithmultipleWDcomponents,youmaycomeacrossasituationwhereyouneedtoreusealreadydevelopedpartsofanexistingWebdynprocomponent.

TheWebDynproframeworkprovidesyouwithatechniquecalledComponentUsage,withthehelpofwhichyoucanreusetheevents,methods,andcontextofoneWDcomponentintoanotherWDcomponent.StandardexamplesofComponentUsage:SelectOptions,ALV,OVS.YoudeclarecomponentusagebothattheComponentandattheviewlevels:

@ComponentLevel:

[http://3.bp.blogspot.com/-

K9BMWfVzBxA/T_MmZTQ1AeI/AAAAAAAAHHw/bPvckQjzlwo/s1600/WD1.png]

@ViewLevel:


srpzh83TNsw/T_MnF99c4AI/AAAAAAAAHH4/wb_pvsB2v9c/s1600/WD2.png]

Question2:BrieflyexplainhowwillyouuseimplementSelectOptionsin

SAP Webdynpro ABAP Interview Questions Part 3

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WebDynpro?1)DeclareComponentUsageforStandardWDcomponentWDR_SELECT_OPTIONSbothatcomponentandviewlevel.

[http://4.bp.blogspot.com/-LSTbEw9ntvo/T_MtHwUqOBI/AAAAAAAAHIE/JcZAiMMrm-

k/s1600/WD2.png]

[http://4.bp.blogspot.com/-QsMVCqUUa80/T_MtX6fnE-

I/AAAAAAAAHIM/tT0OZgBaZXE/s1600/WD2.png]

2)PlaceaVIEWCONTAINERonyourmainviewandembedtheviewWND_SELECTION_SCREENofcomponentWDR_SELECT_OPTIONSinit.

[http://1.bp.blogspot.com/-85qxoyxt5wk/T_Mt8m9olsI/AAAAAAAAHIU/4jum76-

DvyE/s1600/12.png]

3)UsethemethodsCREATE_RANGE_TABLEandADD_SELECTION_FIELDforyourfieldsonSelectionscreen.

4)UsemethodGET_RANGE_TABLE_OF_SEL_FIELDtoreaduserinputbeforeyoudoaSELECT.Question3:WhatistheWebDynproPhasemodel?Wheneveraroundtripoccursfromtheclient(browser)totheserver,asequenceofprocessingstepsisexecuted.ThissequenceofprocessingstepsinwebDynproiscalledthePhaseModel.ExecutingallthetasksinthephasemodelistheresponsibilityoftheWebDynproframework.Eachstepisexecutedonlyonceanderrorsifanyarecaptured.

Ifyouwanttogetintothedetails,havealookatthewebinarfromChris

Whealy:Understanding the Web Dynpro Phase model.



[http://scn.sap.com/docs/DOC-2412]

ImportantQuestion4:WhatisOVS?CanyouexplainthedifferentphasesusedinOVS?FirstweshouldunderstandthedifferencebetweenValuehelpandOVSi.e.objectValueSelector.WeusegenericValueHelponlyforthefieldtowhichitisbound.OVSisusedwhenwewanttopopulatemultiplefieldsbasedononefieldonthescreen.


LYrpB8SRTWc/T_MwpTygWCI/AAAAAAAAHIg/S4SCZl712P0/s1600/12.png]

Soasperthescreenshot,IfIselectUseridfromOVShelp,FirstnameandLastnamewillbepopulatedautomatically.ThestandardcomponentWDR_OVSisusedforimplementingOVS.

OVSworksonthePHASEMODELanddifferenttasksareperformedduringdifferentphases.ThecurrentphaseisindicatedbytheparameterPHASE_INDICATOR.

Phase1:Inthisphaseyouhavethepossibilitytodefinethetexts,ifyoudonotwanttousethedefaults:SoYoucanplayaroundwiththehighlightedtextsinthescreenshotbelowinthisphase.Herewecallthemethodovs_callback_object->Set_Configuration




qLuxVqtJMnU/T_MxUmDxr2I/AAAAAAAAHIo/6PlBakPCODM/s1600/12.png]

Phase2:Ifyoudonotwantthefilterfields,youcandothatinthisphaseandthetablewillbedisplayeddirectly.Referscreenshotbelow.Thetableisdisplayeddirectly.Ihaveblurredsomeresults.Hereyoucancallthemethodovs_callback_object->Set_Input_Structure


PETVlUxelUE/T_MyGPxZVZI/AAAAAAAAHIw/phop_9TGiRk/s1600/12.png]

Phase3:InthisPhase,YouwritetheselectqueriesthatshouldrunasperuserinputwhentheuserhitsStartSearchbuttonandfinallysettheoutputtable.Youcancallthemethodovs_callback_object->Set_Output_Tableforthatpurpose.

Phase4:Inthisphase,youpasstheselectedrecordtotheWebdynproFields.i.e.settheattributesusing ovs_callback_object->context_element->Set_Attribute

[http://4.bp.blogspot.com/-7b6989yt3Cc/T_MynEaFngI/AAAAAAAAHI4/YCJJBhnCb-

Y/s1600/12.png]

Question5:BrieflyexplainhowwillyouimplementALVinWebDynpro?ToimplementALVinWebDynpro,youneedtousetheStandardWDcomponentSALV_WD_TABLE.Weneedtouse:



a)theviewTABLEofcomponentSALV_WD_TABLEb)thenodeDATAofcomponentSALV_WD_TABLE.Hereisthebriefprocess:

1)DeclarecomponentUsageforSALV_WD_TABLEattheWDcomponentlevelandtheviewlevel.@ComponentLevel:

[http://4.bp.blogspot.com/-91hqmJOtIyY/T_M5yvSw5QI/AAAAAAAAHJE/Pktvgx8QBic/s1600/12.

png]

@ViewLevel:


FYPxCZlrdlA/T_M8Hj47frI/AAAAAAAAHJM/83KYvWGgS40/s1600/12.png]

2)PutaVIEWCONTAINERUIelementontheMAINviewandembertheviewTABLEofSALV_WD_TABLEintoit.


kHPMav60j6M/T_NBKVejiVI/AAAAAAAAHJY/soJwsbeVQxY/s1600/12.png]


GII2S82YlpI/T_NBYghbb4I/AAAAAAAAHJg/_jnDWmOQAAo/s1600/12.png]

3)LetssaytheALVdataistobepopulatedinNODE_FLIGHT.



WritethelogictoselecttheALVDataandbindittoNODE_FLIGHT:node_flight_alv->BIND_TABLE(lt_node_flight_alv).

4)DoaContextmappingbetweenNODE_ALVandthenodeDATAofSALV_WD_TABLE.

[http://1.bp.blogspot.com/-63g8ZyavPN8/T_NB4uVjAMI/AAAAAAAAHJo/8KImS7Sw9nw/s1600/1

2.png]

Question6:Howtomakecolumnsinatableeditable?WhiledoingtheBindingfortheTable,justchoose'Inputfield'insteadof'Textview'.RefertheScreenshotbelow:

[http://2.bp.blogspot.com/-y59A4DPbBAc/T_NCaYy-

hbI/AAAAAAAAHJw/MIOi9bnoZ7Q/s1600/12.png]


iFyyTCGamGs/T_NCpWP0XVI/AAAAAAAAHJ4/GwTX19qYSNw/s1600/12.png]

Question7:HowwillyoudeleteselectedrowsinaTable/ALV?GettheTable/ALVdatainaninternaltable.Deletetherowselectedbytheuserfromtheinternaltable.Re-bindtheinternaltabletothenodeboundtotheTable/ALV.




HvC3Ki7L9L4/UNlapQNnerI/AAAAAAAAHNk/1G7Z_TKj700/s1600/Inbound+plugs+for+Window.PNG]

Question8:HowdoyougeneratePOPUPinWD?ThiscanbeeasilydoneusingtheWizard:TheCREATE_WINDOWmethodisusedinthiscase.


icMPQyhkyO0/T_NDfWzDxOI/AAAAAAAAHKA/B7ikKEWDCzY/s1600/12.png]

Question9:HowdoyoucloseawindowinWebDynpro?

ThereisaspecialoutboundplugcalledExitPlugthatcanbeusedforthispurpose.

wd_this->fire_to_exit_plg(url=urlclose_window=close_window).


MtUwwo0BBvw/T_NEIysGRkI/AAAAAAAAHKI/cGPbQ3xn3Vw/s1600/12.png]

AlsoexploreotherPlugTypes:

[http://2.bp.blogspot.com/-1jD1MNNqjoc/UNlaqQCwu9I/AAAAAAAAHNo/Q0R0Uf6b2Yc/s1600/O



utbound+plugs+for+Window.PNG]

Iamgoingtoaddsomemorequestionstopart3:Letmeknowifyouneedanswerstothebelowquestionsbyputtingyourcommentsbelow:

Question:WhatisthedifferencebetweenDropdownbykeyanddropdownbyindex?

Question:Howdoyoudisplayerror/success/warningmessagesinWebDynpro?

Question:Howdoyouaccessmethodsofcomponentcontrollerinaview?

Question:HaveyouworkedonroadmapUIelement?Elaborate.

Question:WhatisdynamicALVinwebdynpro?

Question:CanyouhaveTotalsandSubtotalsinWebdynproALV?How?Hint:FirstgetthereferenceoftheALV.Thengetthecolumns.Byloopingatlt_columns,gettotherequiredcolumn.Onceyouachievethis,checkmethodscreate_aggr_ruleandcreate_sort_ruleoftheclasscl_salv_wd_field.

Question:CanyouhaveTOPOFPAGEandENDOFPAGE?How?Hint:CheckTOP_OF_LISTandEND_OF_LISTevents.

Question:HaveyouworkedoneventsinALVinwebdynpro?Whicheventsdoyouknow?

[http://2.bp.blogspot.com/-RsJbVrIq7-s/UA1unVWwUII/AAAAAAAAHMg/ZoO7BptS3-

g/s1600/wd+alv+events.PNG]

Question:CanyouaddcustombuttonsonWebDynproALVtoolbar?How?



[http://1.bp.blogspot.com/-iO0eIvlThno/UA1vhP7ehNI/AAAAAAAAHMo/0jMbkvoG-

M8/s1600/ALV+custm+buttons.PNG]

Question:CanyouaddcustombuttonsinWebDynproALVcells?How?


uYk4cKtayl0/UA1vw_MsGhI/AAAAAAAAHMw/8i8pHkSuk1o/s1600/wd+buttons.PNG]

Question:CanyouaddImage/IconsinWebDynproALVcells?How?Howdoyoudefineandimplementactionhandlersforthem?


WhWTd1c4oCo/UA1wLu_0ceI/AAAAAAAAHM4/nC6u7UtIhMA/s1600/icons+in+wd.PNG]

Question:CanyouaddlinksinWebDynproALVcells?How?


_eVsC2R854Y/UA1wo4F5-aI/AAAAAAAAHNA/JRjBuUUpMc8/s1600/LInk+WD.PNG]

IhopethisbloghelpsyoucrackyourwebdynprointerviewJ.Allthebestdudesanddudettes!!

Ifyoulikedthispostsofar,pleaseconsiderhittingtheGoogleplusbuttonbelow:

Posted 3rd July 2012 by Amby

19 View comments

Sonal and her friends December 4, 2012 at 8:23 PM

Good one Amby

Reply

Vallabhaneni December 21, 2012 at 7:34 AM

Hi Amby,

Could you please post the answers for the unaswered questions as well.



Replies

ThanksBob

Reply

Amby December 24, 2012 at 11:57 PM

Let's wait to see . If more people demand answers . Then it would make sense to upload answers :)

Reply

manasa allamsetty December 30, 2012 at 1:01 PM

Reply

This comment has been removed by the author.

Singh December 30, 2012 at 3:49 PM

Thanks a lot for this awesome blog :)World was never easier place untill people like you happened.

Answer to unanswered questions and few more blog links like this would be a great :)

Reply

Sumit Jindal January 8, 2013 at 10:08 PM

Hi Amby,

Please post the answers to the remaining set of questions. They'll really be veryuseful. Thanks.

Reply

vaibhav January 17, 2013 at 6:40 AM

Hi

How may types of value selector are there in Webdynpro ABAP. Do we have SVSand EVS in Webdynpro ABAP too?

Reply

Anonymous February 10, 2013 at 8:05 AM

Thanks Amby for all the information ... It would be great help if you share answers toremaining questions. :)

Reply

Amby February 10, 2013 at 8:21 PM

okay ... will try to add those in sometime.

Glad that you liked it. I am planning to put some more blogs on ALV,Scripts, Smart forms as well. So stay tuned :)

Anonymous March 16, 2013 at 10:34 PM



Reply

Hi vaibhav we have 4 types of value selectors in WEBDYNPRO ABAP,1) Simple Value selector2) Extended value selector3) Dynamic value selector4) Object Value selector

vaibhav April 27, 2013 at 10:54 AM

Okie...Thanks for your reply:)

Anonymous June 13, 2013 at 5:45 PM

Good Blog... Thank you..

NARASIMHA February 26, 2013 at 9:53 PM

Thank you Amby...very useful for interviews

Reply

Vijay Vikram May 22, 2013 at 10:49 AM

No words man... mind blowing explanation... Keep up d good work

Reply

Anonymous May 28, 2013 at 6:50 AM

Hello Amby,This series is very useful.Please add answers to the remaining questions as well. Thanks.

Reply

Surya Prakash Reddy Maryadha June 11, 2013 at 8:47 AM

Hi Experts,

Here are the answers for few questions.

1.Can you add custom buttons in Web Dynpro ALV cells ? How?2.Can you add Image / Icons in Web Dynpro ALV cells ? How?3.Can you add links in Web Dynpro ALV cells ? How?

For all the above 3 questions here is the common answer.

Ans: Yes. We can add Custom buttons, Image / Icons and links in Web Dynpro ALVcells by using Table cell editor property.

For example you have designed a table in view layout with 4 fields. Now you want toadd button in 1 field (Column). Now you can select 1 column of that field and rightclick on that and click on Insert Cell Editor then popup box will show then give IDwhich you want and select Typ as Button hit enter then maintain properties of button. Similarly for Image / Icon and Links and etc.

4.How do you access methods of component controller in a view ?Ans: We can access methods of component controller by usingWD_COMP_CONTROLLER attribute. It will refer component controller. Syntax:



Enter your comment...

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WD_COMP_CONTROLLER->.

Amby,Please let me know if any of these answers wrong.

Thanks,Surya Prakash Reddy M

Reply

anil kumar July 4, 2013 at 5:07 AM

Very good Documents which changes the so many life's in interviews....Well done Amby...

Reply

Arun Narayanan July 10, 2013 at 4:25 AM

Hi Amby,

Expecting answers for all unanswered questions in each topics.Please update your blog with OOABAP questions and answers.It will help a lot.

Cheerz..Arun.

Reply

Anonymous December 18, 2013 at 11:22 PM

Hi Amby,

I found very helpful with the stuffs you shared here. As a newbie this blog gives me aclear idea on the WDA and grown my confidence level to choose this carrier path.

Please update the answers for the questions which are not yet answered. This wouldhelp more the guys like me.

Thanks you for the excellent stuffs.

Reply

SAP Webdynpro ABAP Interview Questions Part 3

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