... Foreword ... 15



... Preface ... 17



... Acknowledgements ... 19



... Basic Concepts and Technical Components ... 21



1 ... Introduction ... 23



1.1 ... What is the ABAP RESTful Application Programming Model? ... 24



1.2 ... Architecture and Concepts ... 42



1.3 ... Development Objects ... 48



1.4 ... ABAP Development Tools ... 53



1.5 ... Quality Attributes of the ABAP RESTful Application Programming Model ... 54



1.6 ... Availability of the ABAP RESTful Application Programming Model ... 58



2 ... Core Data Services: Data Modeling ... 61



2.1 ... What are Core Data Services? ... 62



2.2 ... Structure and Syntax of Core Data Services ... 65



2.3 ... Associations ... 79



2.4 ... Annotations ... 83



2.5 ... Access Controls ... 89



2.6 ... Extensibility of CDS Entities ... 94



2.7 ... Additional CDS Functionality ... 101



2.8 ... Virtual Data Model ... 109



2.9 ... CDS Language Elements for Modeling Business Objects ... 113



3 ... Behavior Definition ... 117



3.1 ... What is a Behavior Definition? ... 117



3.2 ... Editing a Behavior Definition in ABAP Development Tools ... 129



3.3 ... Implementation Types ... 136



3.4 ... Strict Mode ... 141



3.5 ... Entity Behavior Definition ... 142



3.6 ... Defining a Behavior Pool ... 143



3.7 ... Numbering ... 146



3.8 ... Field Properties ... 150



3.9 ... Field Mappings ... 153



3.10 ... Standard Operations for a CDS Entity ... 155



3.11 ... Specific Operations for a CDS Entity ... 159



3.12 ... Concurrency and Locking Behavior ... 168



3.13 ... Internal Business Logic ... 173



3.14 ... Authorization Checks ... 184



3.15 ... Draft Handling ... 189



3.16 ... Overarching Concepts ... 196



4 ... Entity Manipulation Language: Accessing Business Logic ... 205



4.1 ... Data Types ... 206



4.2 ... EML Operations ... 210



4.3 ... Using EML Outside of Behavioral Implementations ... 220



5 ... Behavior Implementation ... 225



5.1 ... Business Object Provider API ... 225



5.2 ... Runtime Behavior of the ABAP RESTful Application Programming Model ... 226



5.3 ... Interfaces for the Interaction Handler and the Save Handler ... 229



5.4 ... Interaction Handler ... 230



5.5 ... Save Handler ... 253



6 ... Business Services ... 263



6.1 ... Projection Layer ... 264



6.2 ... Service Definition ... 267



6.3 ... Service Binding ... 268



6.4 ... Testing Business Services in the SAP Gateway Client ... 272



6.5 ... Testing UI Services with SAP Fiori Elements Preview ... 275



7 ... User Interfaces and SAP Fiori Elements ... 277



7.1 ... Development Tools ... 277



7.2 ... SAP Fiori Elements ... 281



... Practical Application Development ... 313



8 ... Use Cases ... 315



8.1 ... Applications Types ... 315



8.2 ... Implementation Types ... 316



8.3 ... Selecting the Appropriate Implementation Type ... 318



9 ... Managed Scenario: Developing an Application with SAP Fiori Elements ... 321



9.1 ... Description of the Use Case ... 321



9.2 ... Building the Data Model ... 322



9.3 ... Creating Behavior Definitions ... 334



9.4 ... Defining a Business Service ... 340



9.5 ... Creating an SAP Fiori Elements User Interface ... 344



9.6 ... Enrichment with a Determination ... 352



9.7 ... Enrichment with a Validation ... 356



9.8 ... Enrichment with an Action ... 360



9.9 ... Generation and Deployment of the Application ... 362



10 ... Managed Scenario with Unmanaged Save: Integrating an Existing Application ... 371



10.1 ... Description of the Use Case ... 371



10.2 ... Building the Data Model ... 375



10.3 ... Creating a Behavior Definition ... 385



10.4 ... Implementing the Create Purchase Order Function ... 387



10.5 ... Implementing the Delete Purchase Order Function ... 409



10.6 ... Defining Business Services ... 416



10.7 ... Implementing Authorization Checks ... 419



10.8 ... Creating an SAP Fiori Elements User Interface ... 424



11 ... Unmanaged Scenario: Reusing Existing Source Code ... 429



11.1 ... Description of the Use Case ... 430



11.2 ... Description of the Existing Application ... 431



11.3 ... Extending the Data Model ... 437



11.4 ... Creating a Behavior Definition ... 443



11.5 ... Creating a Behavior Implementation ... 447



11.6 ... Defining a Business Service ... 462



12 ... Specific Features for the SAP BTP, ABAP Environment ... 465



12.1 ... Technical Fundamentals ... 466



12.2 ... Identity and Access Management ... 473



12.3 ... Deploying SAP Fiori Apps and Assigning Authorizations ... 476



12.4 ... Consuming Business Services ... 484



13 ... Outlook ... 491



13.1 ... Build ... 492



13.2 ... Extensibility ... 492



13.3 ... Integration and Reusability ... 494



... Bibliography ... 497



A.1 ... Books ... 497



A.2 ... Online Resources ... 497



... Authors ... 499



... Index ... 501