@abapify/adt-plugin-abapgit

abapGit format plugin for ADT — serializes ABAP objects to Git-compatible XML/ABAP files.

Architecture Overview

┌─────────────────────────────────────────────────────────────────────┐
│                        adt-plugin-abapgit                           │
├─────────────────────────────────────────────────────────────────────┤
│  XSD Schemas (xsd/)          →  ts-xsd codegen  →  TypeScript types │
│  (XML structure definition)     (build time)       + parser/builder │
├─────────────────────────────────────────────────────────────────────┤
│  Object Handlers (handlers/)                                        │
│  ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐       │
│  │  CLAS   │ │  INTF   │ │  DEVC   │ │  DTEL   │ │  DOMA   │       │
│  │ handler │ │ handler │ │ handler │ │ handler │ │ handler │       │
│  └────┬────┘ └────┬────┘ └────┬────┘ └────┬────┘ └────┬────┘       │
│       └──────────┬┴──────────┬┴──────────┬┴──────────┘             │
│                  ▼           ▼           ▼                          │
│            createHandler (factory)                                  │
│            - Auto-registration                                      │
│            - Default serialize logic                                │
│            - File naming conventions                                │
├─────────────────────────────────────────────────────────────────────┤
│  ADK Facade (@abapify/adk)                                          │
│  - AdkClass, AdkInterface, AdkPackage...                            │
│  - Client-agnostic object model                                     │
│  - Source code retrieval via getSource()/getIncludeSource()         │
└─────────────────────────────────────────────────────────────────────┘

Key Design Decisions

1. XSD Schemas as Single Source of Truth

Why XSD?

• XML Schema Definition (XSD) is the industry standard for XML structure validation
• Can be used outside our tools (e.g., xmllint --schema intf.xsd file.xml)
• Provides formal contract for abapGit XML format
• Enables automated validation in CI/CD pipelines

# Validate any abapGit XML file against our schema
xmllint --schema xsd/intf.xsd myinterface.intf.xml --noout

2. ts-xsd for Type-Safe XML Handling

Why ts-xsd?

Unlike typical XML codegen tools that only generate types, ts-xsd provides:

• TypeScript types with full type inference
• XML parser that returns typed objects
• XML builder that accepts typed objects
• Schema object for runtime validation

// Generated from XSD - fully typed parse/build
import { intf } from './schemas/generated';

const data = intf.parse(xmlString); // → AbapGitIntf (typed)
const xml = intf.build(data); // → string (valid XML)

3. ADK as Client-Agnostic Facade

Why not implement ADT client features in the plugin?

The plugin only consumes the ADK facade:

• ADK handles all SAP communication details
• Plugin focuses purely on serialization format
• Same plugin works with any ADT client implementation
• Clear separation of concerns

// Plugin receives ADK objects, doesn't care how they were fetched
getSources: (cls) =>
  cls.includes.map((inc) => ({
    suffix: ABAPGIT_SUFFIX[inc.includeType],
    content: cls.getIncludeSource(inc.includeType), // ADK handles this
  }));

4. Handlers Don't Touch File System

Why delegate file operations to base class?

Object handlers only define mappings:

• toAbapGit() - ADK data → abapGit XML structure
• getSource() / getSources() - which source files to create

The createHandler factory handles:

• File creation with correct naming
• XML building with proper envelope
• Promise resolution for async sources
• Empty content filtering

Supported Object Types

| Type | Status | Handler | Notes | | ---- | ------ | --------- | --------------------------------------------------------------------- | | CLAS | ✅ | clas.ts | Multiple includes (main, locals_def, locals_imp, testclasses, macros) | | INTF | ✅ | intf.ts | Single source file | | DEVC | ✅ | devc.ts | Fixed filename package.devc.xml | | DTEL | ✅ | dtel.ts | Metadata only (no source) | | DOMA | ✅ | doma.ts | Custom serialize for fixed values |

File Structure

src/
├── zcl_example.clas.abap              # Main class source
├── zcl_example.clas.locals_def.abap   # Local type definitions
├── zcl_example.clas.locals_imp.abap   # Local implementations
├── zcl_example.clas.testclasses.abap  # Test classes
├── zcl_example.clas.xml               # Class metadata
├── zif_example.intf.abap              # Interface source
├── zif_example.intf.xml               # Interface metadata
├── ztest_dtel.dtel.xml                # Data element (no source)
├── ztest_doma.doma.xml                # Domain (no source)
└── package.devc.xml                   # Package definition

Development

Building

npx nx build adt-plugin-abapgit

Testing

npx nx test adt-plugin-abapgit

Regenerating Schemas

After modifying XSD files:

npx nx codegen adt-plugin-abapgit

Contributing

See CONTRIBUTING.md for detailed guidelines on:

• Adding new object type support
• XSD schema conventions
• Handler implementation patterns
• Testing requirements

See Also

• abapGit Documentation
• @abapify/adt-plugin - Plugin interface
• @abapify/adk - ABAP Development Kit