Core Data Services for ABAP
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The definitive CDS resource is back and bigger than ever! Begin with the basics: explore CDS syntax and model types. Then learn to define CDS entities and model SAP S/4HANA application data with step-by-step instructions. You'll develop models for analytical and transactional applications, work with the SAP S/4HANA virtual data model, and get to know the ABAP RESTful application programming model. Round out your knowledge with details on extensibility, testing, and troubleshooting. Get on the cutting edge of data modeling!
In this book, you'll learn about:
a. CDS Data Modeling
Get started with the CDS fundamentals. Model your first CDS view and understand how to work with entity types, associations, annotations, access controls, business services, and more. Explore all-new ABAP functionality and syntax.
b. ABAP RESTful Application Programming Model
Develop application models based on SAP S/4HANA's new ABAP RESTful application programming model. Create behavior definitions, add advanced functions, and implement handlers.
c. Extending, Testing, and Troubleshooting
Customize your applications and ensure they're running smoothly. Extend CDS views with CDS entity extensions, test them with the test double framework, and troubleshoot any issues.
Highlights include:
1) Data modeling
2) Associations
3) Annotations
4) Access controls
5) Business services
6) ABAP RESTful application programming model
7) Virtual data model (VDM)
8) Analytical and transactional applications
9) Hierarchies
10) Extensions
11) Automated testing
Troubleshooting
Inhaltsverzeichnis
. . . 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
8. 4 . . . Foreign Key Relations . . . 245
8. 5 . . . Text Relations . . . 249
8. 6 . . . Composition Relations . . . 252
8. 7 . . . Time-Dependent Data . . . 255
8. 8 . . . Summary . . . 256
9 . . . The Virtual Data Model in SAP S/4HANA . . . 257
9. 1 . . . Why a Virtual Data Model? . . . 257
9. 2 . . . Lifecycle, Release, and Stability . . . 259
9. 3 . . . Structure of the Virtual Data Model . . . 270
9. 4 . . . Naming in the Virtual Data Model . . . 277
9. 5 . . . Basic Interface View for the Sales Order . . . 282
9. 6 . . . Tips for Finding Virtual Data Model Views . . . 289
9. 7 . . . Summary . . . 298
10 . . . Modeling Analytical Applications . . . 299
10. 1 . . . Analytics in SAP S/4HANA . . . 299
10. 2 . . . Analytical Views . . . 301
10. 3 . . . Analytical Queries . . . 321
10. 4 . . . Analytical Infrastructure . . . 348
10. 5 . . . Summary . . . 351
11 . . . Modeling Transactional Applications . . . 353
11. 1 . . . Transactional Applications . . . 354
11. 2 . . . Transactional Infrastructure in SAP S/4HANA . . . 355
11. 3 . . . Transactional Object Models . . . 358
11. 4 . . . Behavior Definitions . . . 364
11. 5 . . . Transactional Service Models . . . 442
11. 6 . . . Define Projection Behavior Definition . . . 451
11. 7 . . . Runtime Orchestration . . . 461
11. 8 . . . SAP Fiori and OData Consumption . . . 466
11. 9 . . . Summary . . . 479
12 . . . Hierarchies in CDS . . . 481
12. 1 . . . Hierarchy Categories and Basics . . . 481
12. 2 . . . Annotation-Based Parent-Child Hierarchies . . . 484
12. 3 . . . CDS Hierarchies . . . 492
12. 4 . . . Summary . . . 510
13 . . . CDS-Based Search Functionality . . . 511
13. 1 . . . Modeling Value Helps . . . 512
13. 2 . . . Free-Text Search Functionality in OData Services . . . 529
13. 3 . . . Summary . . . 537
14 . . . Extensions of CDS Views and View Entities . . . 539
14. 1 . . . Extension Options . . . 540
14. 2 . . . CDS Entity Extensions . . . 541
14. 3 . . . Usage of CDS Entity Extensions . . . 552
14. 4 . . . Summary . . . 558
15 . . . Automated Testing . . . 561
15. 1 . . . Fundamentals of the Test Double Framework . . . 562
15. 2 . . . Test Sample Overview . . . 563
15. 3 . . . Test Implementations of CDS Views . . . 566
15. 4 . . . Test ABAP Logic with SQL Accesses to CDS Views . . . 580
15. 5 . . . Test Code Generation Functions . . . 583
15. 6 . . . Summary . . . 587
16 . . . Troubleshooting . . . 589
16. 1 . . . Performance Aspects . . . 589
16. 2 . . . Pitfalls . . . 596
16. 3 . . . Troubleshoot Implementations of CDS Models . . . 606
16. 4 . . . Troubleshoot Activation Issues . . . 613
16. 5 . . . Summary . . . 618
. . . Appendices . . . 621
A . . . CDS Annotation Reference . . . 621
B . . . The Authors . . . 633
. . . Index . . . 635
. . . 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
8. 4 . . . Foreign Key Relations . . . 245
8. 5 . . . Text Relations . . . 249
8. 6 . . . Composition Relations . . . 252
8. 7 . . . Time-Dependent Data . . . 255
8. 8 . . . Summary . . . 256
9 . . . The Virtual Data Model in SAP S/4HANA . . . 257
9. 1 . . . Why a Virtual Data Model? . . . 257
9. 2 . . . Lifecycle, Release, and Stability . . . 259
9. 3 . . . Structure of the Virtual Data Model . . . 270
9. 4 . . . Naming in the Virtual Data Model . . . 277
9. 5 . . . Basic Interface View for the Sales Order . . . 282
9. 6 . . . Tips for Finding Virtual Data Model Views . . . 289
9. 7 . . . Summary . . . 298
10 . . . Modeling Analytical Applications . . . 299
10. 1 . . . Analytics in SAP S/4HANA . . . 299
10. 2 . . . Analytical Views . . . 301
10. 3 . . . Analytical Queries . . . 321
10. 4 . . . Analytical Infrastructure . . . 348
10. 5 . . . Summary . . . 351
11 . . . Modeling Transactional Applications . . . 353
11. 1 . . . Transactional Applications . . . 354
11. 2 . . . Transactional Infrastructure in SAP S/4HANA . . . 355
11. 3 . . . Transactional Object Models . . . 358
11. 4 . . . Behavior Definitions . . . 364
11. 5 . . . Transactional Service Models . . . 442
11. 6 . . . Define Projection Behavior Definition . . . 451
11. 7 . . . Runtime Orchestration . . . 461
11. 8 . . . SAP Fiori and OData Consumption . . . 466
11. 9 . . . Summary . . . 479
12 . . . Hierarchies in CDS . . . 481
12. 1 . . . Hierarchy Categories and Basics . . . 481
12. 2 . . . Annotation-Based Parent-Child Hierarchies . . . 484
12. 3 . . . CDS Hierarchies . . . 492
12. 4 . . . Summary . . . 510
13 . . . CDS-Based Search Functionality . . . 511
13. 1 . . . Modeling Value Helps . . . 512
13. 2 . . . Free-Text Search Functionality in OData Services . . . 529
13. 3 . . . Summary . . . 537
14 . . . Extensions of CDS Views and View Entities . . . 539
14. 1 . . . Extension Options . . . 540
14. 2 . . . CDS Entity Extensions . . . 541
14. 3 . . . Usage of CDS Entity Extensions . . . 552
14. 4 . . . Summary . . . 558
15 . . . Automated Testing . . . 561
15. 1 . . . Fundamentals of the Test Double Framework . . . 562
15. 2 . . . Test Sample Overview . . . 563
15. 3 . . . Test Implementations of CDS Views . . . 566
15. 4 . . . Test ABAP Logic with SQL Accesses to CDS Views . . . 580
15. 5 . . . Test Code Generation Functions . . . 583
15. 6 . . . Summary . . . 587
16 . . . Troubleshooting . . . 589
16. 1 . . . Performance Aspects . . . 589
16. 2 . . . Pitfalls . . . 596
16. 3 . . . Troubleshoot Implementations of CDS Models . . . 606
16. 4 . . . Troubleshoot Activation Issues . . . 613
16. 5 . . . Summary . . . 618
. . . Appendices . . . 621
A . . . CDS Annotation Reference . . . 621
B . . . The Authors . . . 633
. . . Index . . . 635
Produktdetails
Erscheinungsdatum
26. Februar 2022
Sprache
englisch
Seitenanzahl
648
Reihe
SAP PRESS Englisch
Autor/Autorin
Renzo Colle, Ralf Dentzer, Jan Hrastnik
Verlag/Hersteller
Produktart
gebunden
Gewicht
1480 g
Größe (L/B/H)
43/183/264 mm
ISBN
9781493221097
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