Core Data Services for ABAP (Hardcover, 2, Enlarged)

... Preface ... 17

... Structure of the Book ... 19

... Acknowledgments ... 22

1 ... Modeling Your First CDS View ... 23

1.1 ... Define the Data Model of the Application ... 24

1.2 ... Implement the Data Model of the Application ... 27

1.3 ... Summary ... 51

2 ... Fundamentals of CDS Data Modeling ... 53

2.1 ... Overview of CDS Models ... 54

2.2 ... Overview of CDS View Syntax ... 57

2.3 ... Key Fields ... 59

2.4 ... Cast Operations ... 61

2.5 ... Typed Literals ... 63

2.6 ... Case Statements ... 64

2.7 ... Session Variables ... 66

2.8 ... Client Handling ... 67

2.9 ... Union Views ... 69

2.10 ... Joins ... 76

2.11 ... SQL Aggregation Functions ... 82

2.12 ... Projection Fields ... 85

2.13 ... Parameters ... 86

2.14 ... Reference Fields ... 91

2.15 ... Conversion Functions for Currencies and Quantity Units ... 94

2.16 ... Summary ... 97

3 ... Associations ... 99

3.1 ... Define Associations ... 100

3.2 ... Expose Associations ... 102

3.3 ... Model Compositional Relations ... 103

3.4 ... Model M:N Relations ... 105

3.5 ... Project Associations ... 109

3.6 ... Use Associations in CDS Views ... 109

3.7 ... Use Associations in ABAP Code ... 120

3.8 ... Summary ... 121

4 ... Annotations ... 123

4.1 ... Annotation Definitions ... 124

4.2 ... Effects of Annotations ... 135

4.3 ... Propagation Logic of Element Annotations ... 137

4.4 ... CDS Metadata Extensions ... 144

4.5 ... Active Annotations ... 148

4.6 ... Summary ... 149

5 ... Access Controls ... 151

5.1 ... Fundamentals of Access Controls ... 152

5.2 ... Mode of Action of Access Controls ... 156

5.3 ... Implementation Patterns for Access Controls ... 161

5.4 ... Test Access Controls ... 193

5.5 ... Summary ... 196

6 ... Business Services ... 197

6.1 ... Projection Views ... 198

6.2 ... Service Definitions ... 201

6.3 ... Service Bindings ... 206

6.4 ... Testing Business Services ... 213

6.5 ... Summary ... 215

7 ... Native SAP HANA Functions in CDS ... 217

7.1 ... Implementation of a CDS Table Function ... 218

7.2 ... Application Scenarios ... 226

7.3 ... Aspects for Consideration ... 227

7.4 ... Summary ... 228

8 ... Modeling Application Data ... 231

8.1 ... Application Architecture in SAP S/4HANA ... 232

8.2 ... Field Labels ... 235

8.3 ... Field Semantics ... 239