Download - Adding Explicit Enhancement to Custom Program

6/12/2015 AddingExplicitEnhancementtocustomprogram

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Adding Explicit Enhancement to custom programByRohitRanka,StraVisITSolutions

Introduction:

EnhancementFramework is the new paradigm to bring all enhancement techniques under one roof. It can also beswitched using Switch Framework. The following are different enhancement technologies available under thisframework.

SourceCodeEnhancement

FunctionGroupEnhancement

ClassEnhancement

KernelBADIEnhancement

SourceCodeenhancement

Whenever enhancement needs to be incorporated directly into the ABAP source code, this technology shall beprovided. Implementing this technology is also calledasSourceCodePlugIn.There are two types ofSourceCodeenhancementspossible.

Implicitenhancementoption

Explicitenhancementoption

Explicitenhancementoption

As implicit enhancements are predefined enhancements provided by SAP in the source code, the explicitenhancementscanbeimplementedbythecustomersorpartners.

TherearetwotypesofExplicitEnhancementoptionsavailable.Forthis,wenowhavetwonewABAPstatements,viz.

1.Enhancementpoint(SyntaxENHANCEMENTPOINT)2.Enhancementsection(SyntaxENHANCEMENTSECTION)

Enhancementsectionisusedtoreplaceasetofcodeorstatementswiththecustomer(customcode).Inthistechniquetheoriginalsourcecodedoesnotgetexecutedbut,thecustomerimplementation(customcode)getsexecuted.

NoteExplicitenhancementsthoughcanbeplacedanywhereinthesourcecodebut,not justanywhereexceptsomeareaswhereSAPwouldallow(programallows).

STEP1:CreateapackageintransactionSE80(Objectnavigator)NameYDEV

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STEP2:Navigateto'Enhancements'folderofyourpackage.Package(YDEV)Enhancement.

Rightclickthe'Enhancements''Create''EnhancementSpot'.

Fillinthedetailsinthe'CreateEnhancementSpot'dialog.

Andsaveitintocreatedpackage.Observetheenhancementspotcreatedunderthe'EnhancementSpots'folder.

STEP3:'RightClick'thespotcreatedand'Implement'it(CreateanImplementation).



Fillinallthedetailsinthe'CreateEnhancementImplementation'dialog.

STEP4:Now,weneedto'Activate'theenhancementspot.InadditionwiththeEnhancementspotthe'EnhancementImplementation'willgetactivated.

Clickheretocontinue...

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Adding Explicit Enhancement to custom program...Previous

STEP 5: Here we are applying enhancements to a CUSTOM program not a standard program to demonstrate thefunctionality. So we create a simple program 'YDEV_CODE' (say) it is retrieving records from the database table'VBAK'(SalesDocumentHeader)anddisplayingafewrecords.

Now, if thecustomerwants to replace thesetof logicwithhisown logic (say) like retrieving records fromdatabasetable'VBAP'(SalesDocumentItem)andthendisplayafewrecords,he/shewillcreateanenhancementsectionwhichgoeslike,

CreateaprogramYDEV_CODE.

OUTPUT

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STEP6:Rightclicktheareawhichisappropriatetoapplytheenhancement

NoteExplicitenhancementsthoughcanbeplacedanywhereinthesourcecodebut,notjustanywhereexceptsomeareaswhereSAPwouldallow(programallows).

Now, in the 'CreateEnhancementOption' fill in thedetails,herefill thenameunder 'Enhancementsection'only.ThenfillintheEnhancementSpotImplementationNamewhichwecreatedearlier.



NowweareabletoseeprogramlineshaveEnhancementSectionEndEnhancementSection.

Note Make sure that the code which has to be replaced is within the 'ENHANCEMENTSECTION...' and 'ENDENHANCEMENTSECTION'.

Clickheretocontinue..






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Adding Explicit Enhancement to custom program...Previous

STEP7:Nowtoincludethecustomcodeintheprogramwhichwillreplacetheoriginalcode,enablethe'EnhancementMode'byclickingonthe'Spiral'button.

Place the cursor on the 'Enhancementsection' and navigate to 'Edit' 'Enhancement Operations' 'CreateImplementation'.

Fill in the details for the 'Create Enhancement Implementation' dialog. Click on 'Create' button for the 'Select orCreateEnhancementImplementation'dialog.

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STEP 8: Now, write the code within the 'ENHANCEMENT' and 'ENDENHANCEMENT' statements as thereplacementcode.

STEP9: Don't forget to 'Activate' the enhancement Switch the 'Enhancement' modeOFF and 'Activate' theentireprogram.

STEP10:Executethetransaction/programtofindoutthedifference.

BeforeEnhancement:



AfterEnhancement:

Summary:

1. Here we deals with the enhancement of a 'Z' program it is possible to 'CREATE' an 'ENHANCEMENTSECTION'. But, in case of a 'STANDARD SAP' program there are certain places (provided by SAP) like'ENHANCEMENTPOINT...'and'ENHANCEMENTSECTION...'wherewecancreateimplementationsbasedoncustomersbusinessfunctionality.

2.Therecanbeonlyoneandonlyone'ACTIVE'implementationforan'ENHANCEMENTSECTION'.

SourceCode:

*&**&ReportYDEV_CODE*&*&**&*&*&*

REPORTYDEV_CODE.TABLES:VBAK,VBAP.DATA:IT_VBAKTYPESTANDARDTABLEOFVBAKINITIALSIZE0,WA_VBAKTYPEVBAK,IT_VBAPTYPESTANDARDTABLEOFVBAPINITIALSIZE0,WA_VBAPTYPEVBAP.

INITIALIZATION.REFRESH:IT_VBAK,IT_VBAP.CLEAR:WA_VBAK,WA_VBAP.

STARTOFSELECTION.ENHANCEMENTSECTIONYDEV_ENHANCE_SECTIONSPOTSYDEV_IMPLEMENT_SPOT.SELECT*FROMVBAPINTOTABLEIT_VBAP[]UPTO15ROWS.

WRITE:/02'SalesDocument',20'Date',



40'Time',65'NameofPerson'.ULINE.IFIT_VBAP[]ISNOTINITIAL.LOOPATIT_VBAPINTOWA_VBAP.WRITE:/02WA_VBAPVBELN,20WA_VBAPPOSNR,40WA_VBAPMATNR,65WA_VBAPMATWA.ENDLOOP.ENDIF.ENDENHANCEMENTSECTION.*$*$Start:YDEV_ENHANCE_SECTION$*$*ENHANCEMENT1YDEV_IMPLEMENT_ENHC_SECTION."activeversionSELECT*FROMVBAPINTOTABLEIT_VBAP[]UPTO10ROWS.

WRITE:/02'SalesDocument',20'SalesItem',40'MaterialNumber',65'Materialentered'.ULINE.IFIT_VBAP[]ISNOTINITIAL.LOOPATIT_VBAPINTOWA_VBAP.WRITE:/02WA_VBAPVBELN,20WA_VBAPPOSNR,40WA_VBAPMATNR,65WA_VBAPMATWA.ENDLOOP.ENDIF.ENDENHANCEMENT.*$*$End:YDEV_ENHANCE_SECTION$*$*






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