# DDS Migration Summary

## Completed Tasks

### 1. Target Discovery
Discovered all 13 DDS CMake targets in Lts/DDS/:
- **Buildable targets (7)**: ddscore, svcCoreClient, ddsftccore, ddsfts, ddsgen, ddsQoS, ddsconnector
- **INTERFACE libraries (6)**: ddsdtc, ddsdts, ddsfts_connext, topic_type_plugin, routing_plugin, ddsfts_connext

### 2. Build Script Updates
Updated `new_docker_build.sh` GROUP1_TARGETS to include all 7 buildable DDS targets.

### 3. Compilation Fixes Applied

#### NGL Logger Fixes
- `Z/src/NGLLogger/INGLLogger.h`: Fixed log macros to use `::NGL::INGLLogger` namespace
- `Lts/DDS/Core/logger.h`: Fixed LOGGER_T typedef
- `Lts/DDS/Core/logger.cpp`: Fixed getLogger() to use NGLLoggerBootstrap
- `Lts/DDS/FTS/connext.h`: Added m_logger member declarations

#### Core Namespace Fixes
- `Lts/DDS/Core/pacemaker.h`: Fixed Core::PortType → Core::CorePortType
- `Lts/DDS/Core/topic_lock_master.h/.cpp`: Fixed namespace qualifications for Dtc and LockedEntity
- `Lts/DDS/Core/pacemaker.cpp`: Fixed omg::types::optional usage (.value() instead of ())

#### Generic/FTC Fixes
- `include/DDS/DTC/generic_dtc.h`: Added explicit using declarations for inherited methods
- `Lts/DDS/DTC/generic_dtc_impl.h`: Fixed Qt include order (before namespace declarations)
- `Lts/DDS/Generic/generic_data_reader.h`: Fixed Qt include order, added TopicType typedef
- `include/DDS/Generic/generic_data_reader.h`: Wrapped stub in #ifndef BUILD_RTI guard
- `Lts/DDS/FTC/generic_ftc_impl.h`: Fixed QMetaMethod::invoke() signature for Qt6

#### Grantlee Template Fixes
- `Lts/Common/CodeGen/svc_dtc_impl.cpp.grantlee`: Fixed getKey to use direct member access for RTI structs
- `Lts/Common/CodeGen/svc_ftc_impl.cpp.grantlee`: Fixed FunctionReplyObject to use method calls

#### Build System Fixes
- `Lts/DDS/Core/CMakeLists.txt`: Added MAKE_SVCCORECLIENT_LIB compile definition
- `Lts/DDS/CMakeLists.txt`: Fixed subdirectory order (DTC before DDSConnector)
- `Lts/Common/CodeGen/codegen_simple.py`: Added generic_dtc.h include to DtcGenerator
- `tests/test_migration_stubs.cpp`: Fixed DDS namespace errors
- `new_docker_build.sh`: Added INTEGRATION_TEST default variable

### 4. Build Results
- All 7 buildable DDS targets compile successfully with BUILD_RTI=ON and BUILD_GRANTLEE=ON
- CTest: 462/498 tests passed (93%)
- 36 tests not run (DDS unit tests require proper build configuration)

## Remaining Issues

### DDS Unit Tests Not Building
The DdsUnitTests subdirectory (ddsGenericDataTests, ddsDataTopicTests, ddsFunctionTopicTests) is not being built because:
1. CMake condition requires TARGET ddsgen AND TARGET ddsdtc AND TARGET ddsfts AND TARGET ddsQoS
2. These targets exist but the condition may not be evaluating correctly

### Qt5 SIGNAL/SLOT Syntax
File `Lts/DDS/DdsUnitTests/function_topic_tests.cpp` lines 107-108, 132-133 still use Qt5 SIGNAL/SLOT syntax that needs migration to Qt6 QOverload syntax.

## Key Technical Findings

1. **RTI Struct Member Access**: RTI-generated structs use direct member access (e.g., `data.entityId`), NOT method calls
2. **FunctionReplyObject**: Unlike RTI structs, this Qt wrapper class uses methods (id(), str(), args(), etc.)
3. **Namespace Pollution**: Qt includes must come BEFORE namespace declarations to prevent conflicts
4. **Include Path Order**: CMake adds `include/` before `Lts/`, causing stub headers to be found first
5. **Logger Pattern**: Use `NGL::NGLLoggerBootstrap::getNGLRootLogger().getNGLLogger("name")`
6. **omg::types::optional**: Requires .value() or operator* to access, not function call syntax ()

## Files Modified (18 total)
1. new_docker_build.sh
2. Z/src/NGLLogger/INGLLogger.h
3. Lts/DDS/Core/logger.h
4. Lts/DDS/Core/logger.cpp
5. Lts/DDS/Core/pacemaker.h
6. Lts/DDS/Core/topic_lock_master.h
7. Lts/DDS/Core/topic_lock_master.cpp
8. Lts/DDS/FTS/connext.h
9. Lts/DDS/Core/pacemaker.cpp
10. include/DDS/DTC/generic_dtc.h
11. Lts/DDS/DTC/generic_dtc_impl.h
12. Lts/DDS/Generic/generic_data_reader.h
13. include/DDS/Generic/generic_data_reader.h
14. Lts/DDS/FTC/generic_ftc_impl.h
15. Lts/Common/CodeGen/svc_dtc_impl.cpp.grantlee
16. Lts/Common/CodeGen/svc_ftc_impl.cpp.grantlee
17. Lts/Plugins/ExerciseManagement/Gui/ExerciseEdit/exm_edit_gui_plugin.cpp
18. Lts/Plugins/ParticipantManagement/Gui/ParticipantEdit/tactical_organisation.cpp
19. Lts/DDS/Core/CMakeLists.txt
20. Lts/Common/CodeGen/codegen_simple.py
21. Lts/DDS/CMakeLists.txt
22. tests/test_migration_stubs.cpp