2Step-By-step Guide to Build an OData Service Ba..

16/04/2015 StepbystepguidetobuildanODataServiceba...|SCN

http://scn.sap.com/people/volker.drees/blog/2012/10/26/stepbystepguidetobuildanodataservicebasedonrfcspart2 1/11

GettingStarted Newsletters Store

Products Services&Support AboutSCN Downloads

Industries Training&Education Partnership DeveloperCenter

LinesofBusiness UniversityAlliances Events&Webinars Innovation

LogOn JoinUsHi,Guest SearchtheCommunity

Activity Communications Actions

Browse

volker.drees

0 Tweet 1

Helloagain.

Inthe firstpart(1)wehavecreatedaservicethatconsistsoftwoentities(SalesOrderandSalesOrderLineItem)andtworelatedentitysets.TheruntimeartifactshavebeengeneratedandtheODataservicehasbeenregisteredandactivated.Inthispart(2)wewillmapbothentitysetstotherelateddataprovidersinourcasethe2EPMBAPIs.Whenitcomestodataprovidermapping/implementationofODataservicesyouusuallystartwiththeQuerymethodasthisisatypicalentrypointwhenconsumingaservice.Inourcasewewillfirstenablethequery:providemeallSalesOrdersthatexist.Inarealbusinesscaseyouwouldprobablymakesomefilteringmandatorytonotoverloadthebackendsystem.Butletskeepitsimpleforthetimebeing

1.AsmentionedwewillstartwiththeQuerymethodfortheSalesOrderCollectionentityset.ExpandthenodeServiceImplementation>SalesOrderCollectionandrightclickGetEntitySet(Query)andselectMaptoDataSource:

2.Inthemaptodatasourcewindow,enterthefollowingvaluesandchooseEnter:TargetSystem Local

DataSourceType RemoteFunctionCall

DataSourceName BAPI_EPM_SO_GET_LIST

StepbystepguidetobuildanODataServicebasedonRFCsPart2PostedbyVolkerDreesinvolker.dreeson26Oct201211:44:38

Share 4



3.ThemappinghasalreadydonebecausethedatamodelhasbeenbuiltbasedonthesameRFCinterface.Foreachproperty,settheMappingDirectiontoOutput.ChooseEnter:

NowwecanmoveonanddothemappingfortheReadoperation(GetEntity)oftheSalesOrderCollection.1.RightclickGetEntity(Read)andselectMaptoDataSource:

2.IntheMaptoDataSourcedialogbox,enterthefollowingvaluesandchooseEnter:TargetSystem Local


DataSourceName BAPI_EPM_SO_GET_DETAIL



3.ThistimetherearenodefaultmappingsettingsbecausethedatamodelhasbeendefinedbasedonadifferentRFCmodule.ExpandtheHEADERDATAnodefromthetreeontherighthandside:

4.Drag&drop the following fields from the righthand tree to theDataSourceParameter columnof thegrid in themiddleofthescreen:

RFCField(righthandside) EntityProperty

SO_ID SoId

NOTE Note

BUYER_ID BuyerId

BUYER_NAME BuyerName

CURRENCY_CODE CurrencyCode

GROSS_AMOUNT GrossAmount

NET_AMOUNT NetAmount

TAX_AMOUNT TaxAmount

InanyReadOperationwealsoneedtoprovidetheprimarykeyoftheunderlyingentityasaninputparameter.Forthiswehavetomanuallyaddanewlinetothemappingscreen.1.ChoosetheAppendRowpushbutton:



2.OnthenewlinepressF4toselecttheentitysetproperty.DoubleclickSoIdtoselecttheentry:

3.ExpandtheSO_IDnodefromthetreeontherighthandside:

4.Drag&DroptheRFCfieldSO_ID(fromnodeSO_ID)tothenewlycreatedline:

5.Thisperformsthemappingontheinputparameter(SalesOrderIDtofetchtheSalesOrderdetails):

NowwecanmoveonwithmappingtheQueryoperationfortheSalesOrderItementityset

1. Expand the nodeService Implementation > SalesOrderItemCollection and rightclickGetEntitySet (Query) andselectMaptoDataSource:



2.IntheMaptoDataSourcedialogbox,enterthefollowingvaluesandchooseEnter:TargetSystem Local


DataSourceName BAPI_EPM_SO_GET_DETAIL

3. There is again no defaultmapping because the datamodel has been built based on a differentRFCmodule.ExpandtheITEMDATAnodefromthetreeontherighthandside:



4.Drag&drop the following fields from the righthand tree to theDataSourceParametercolumnof thegrid in themiddleofthescreen:

RFCField(righthandside) EntityProperty

SO_ID SoId

SO_ITEM_POS SoItemPos

PRODUCT_ID ProductId

NOTE Note

CURRENCY_CODE CurrencyCode

GROSS_AMOUNT GrossAmount

NET_AMOUNT NetAmount

TAX_AMOUNT TaxAmount

QUANTITY Quantity

QUANTITY_UNIT QuantityUnit

5.IntheDirectionColumnsetallfieldstoOutput.ChooseEnter:

6.ChooseAppendRowbutton:



7.Fromtheinputhelp,selectSoIdforthenewline:

8.ExpandtheSO_IDnodefromtherighthandtree:

9.Drag&droptheRFCfieldSO_ID(fromnodeSO_ID)tothenewlycreatedline:

Nowwearedonewiththedataprovidermapping(atleastfortheQueryandReadoperationsweneed).NowwecanregeneratetheruntimeartifactsandrunourODataservice.1.ChoosetheGeneratepushbutton:

2.Verifythattheruntimeobjectshavebeengeneratedsuccessfully:



3.StarttheGatewayClient(Transaction/IWFND/GW_CLIENT) inaseparatewindowtoruntheservice.ProvidethefollowingURItogettheSalesOrderCollection.ThisexecutesthequerymethodoftheSalesOrderentityset:/sap/opu/odata/sap/ZGW100_XX_SO_SRV/SalesOrderCollection

4.ChooseanysalesorderentryandusetheURItonavigatetothesalesorderdetail,forexample:/sap/opu/odata/sap/ZGW100_XX_SO_SRV/SalesOrderCollection('0500000001')

5.GettherelatedsalesorderlineitemsviathefollowingURL:/sap/opu/odata/sap/ZGW100_XX_SO_SRV/SalesOrderItemCollection/?$filter=SoIdeq'0500000001'



AverageUserRating

(4ratings)

MyRating:

0 Tweet 1

TonavigatefromtheSalesOrderentitytotherelatedlineitems(EntitySet),youneedtoconstructtheURIyourself.Inthe nextpart(3)youwillseehowtodefineanassociationandanavigationpropertybetweenthetwoEntities.

19161Views Products:sap_netweaver_gatewayTopics:mobileTags:gateway,odata,netweaver_gateway,service_builder

Share 4

11Comments

Like(0)

MatteoSomensi09May201417:09

hi,Ifollowedstepbystepyourguide,butitdoesnotwork,theservicewhenIcallSalesOrderCollectionorSalesOrderItemCollectiongivesmeanerrorlikethis:



Like(0)

akshathlt14May201412:59(inresponsetoMatteoSomensi)

HiMatteo,CheckwithconnectionofNW&ECC(Backend)systemconnectedproperlyornot.OnceyoucrosscheckwithBASISteamifpossible.

Like(0)

ARSHADSHAIKH03Nov201412:45

HiVolker,Ifollowedyourblog.iamnotgettingerrorbut,/sap/ZSALES_ORDER_SRV/SalesOrderSetInVBAKihavemanySalesOrdersbutitshowonlyfirst2andwithoutanyotherdeailslikeNote,BuyerId,BuyerNameall.Tableentries.

IfIpasscorrectSalesorderid/sap/ZSALES_ORDER_SRV/SalesOrderSet('0000004975')Iamgettingthiserror

Canyouhelpmeoutinresolvingtheproblem.

VolkerDrees03Nov201416:51

HelloArshad,asmentionedinthefirstparttheBAPIsusedareaccessingtheEPMdemocontent.TheyarenotaccessingtheSDtables(likeVBAK).InsteadyoufindthesamplesalesordersofEPMintableSNWD_SO.Hopethishelps.BestRegards,



FollowSCNSiteIndex ContactUs SAPHelpPortalPrivacy TermsofUse LegalDisclosure Copyright

Like(0)

Volker

Like(0)

ARSHADSHAIKH04Nov201406:38(inresponsetoVolkerDrees)

ThanksVolker,canyousuggestmehowtoaccessthedatafromstandardtables(likeVBAK),IhavetocreatecompleteserviceforSalesOrderandPurchaseorder,BestRegards,ArshadShaikh

Like(2)

VolkerDrees04Nov201409:33(inresponsetoARSHADSHAIKH)

HelloArshad,I'dproposetoaccessstandardtablesviatherelatedBAPIs.E.g.forSalesOrdersthereistheBAPI_SALESORDER_GETLISTfunctionmodule.BestRegards,Volker

Like(0)

ShakeeluddinKhaja24Nov201413:46

Veryusefulinfo.ThanksVolker

Like(0)

PatrickDean27Nov201412:00

Superuseful!Thanksforthedetails!

Like(0)

saurabhvakil26Feb201513:31

Hi,Wehavefollowedyourfirstblog StepbystepguidetobuildanODataServicebasedonRFCsPart1andaretryingtoimplementthestepsmentionedinthisblog.Whileperformingthestep

1.ExpandthenodeServiceImplementation>SalesOrderItemCollectionandrightclickGetEntitySet(Query)andselectMaptoDataSource:wefindthatwhenwerightclickonGetEntitySet(Query)weseetheoptionMaptoDataSourceindisabledformat.Canyoupleaseletmeknowwhatmaybethereasonforthis?Regards,Saurabh

Like(0)

VolkerDrees27Feb201511:06(inresponsetosaurabhvakil)

HiSaurabh,areyoustillinEditmode?"MaptoDataSource"shouldbedisabledonlyinDisplaymode.BestRegards,Volker

Like(0)

VolkerDrees27Feb201511:37(inresponsetosaurabhvakil)

Orhaveyoualreadymappedadatasource?Inthiscasethemenuoptionisalsogreyedout.Regards,Volker

2Step-By-step Guide to Build an OData Service Ba..

Documents