FORM RNTuple Accessor Functions - #880
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…in its association container to accessor functions. The RNTuple association container is now responsible for making sure the shared RNTupleWriter only gets created once.
… RNTuple model. This documents a contract between FORM and the RNTuple backend that FORM shall finish all setup_write() calls before the first time it calls fill().
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📝 WalkthroughWalkthroughThe RNTuple write container now owns file validation, lazy writer creation, and entry creation. Field write containers use parent accessors for field registration, data binding, and commit operations. ChangesRNTuple writer lifecycle
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟠 High · up to The lifecycle delegation is not merge-ready: the field writer currently fails to compile, and RNTuple cleanup can terminate the process if final storage commit fails. Sequence Diagram(s)sequenceDiagram
participant FieldContainer
participant RNTupleContainer
participant ROOT_RNTupleWriter
FieldContainer->>RNTupleContainer: Add field through get_model()
FieldContainer->>RNTupleContainer: Bind data through get_entry()
RNTupleContainer->>ROOT_RNTupleWriter: Lazily create writer if needed
FieldContainer->>ROOT_RNTupleWriter: Fill get_entry()
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Format Fixes Applied✅ clang-format fixes pushed (commit 0b9576c) |
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Actionable comments posted: 2
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Inline comments:
In `@form/root_storage/root_rfield_write_container.cpp`:
- Line 119: Update the assertion in the relevant constructor or initialization
flow to use the declared class member rntuple_parent_ instead of the undeclared
rntuple_parent, preserving the existing get_model() validation.
In `@form/root_storage/root_rntuple_write_container.cpp`:
- Around line 21-22: Remove the direct writer_->CommitDataset() call from the
destructor so ROOT::RNTupleWriter::~RNTupleWriter() performs the automatic
commit and handles ROOT::RException safely; preserve the existing writer_
lifetime and destruction order.
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📒 Files selected for processing (4)
form/root_storage/root_rfield_write_container.cppform/root_storage/root_rfield_write_container.hppform/root_storage/root_rntuple_write_container.cppform/root_storage/root_rntuple_write_container.hpp
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- form/root_storage/root_rfield_write_container.hpp
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Use clang-format tool for all C++ code formatting (VS Code auto-formats on save); configuration defined in `.clang-format` with 100-character line limit and 2-space indentation Follow clang-tidy recommendations defined in `.clang-tidy`
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Files:
form/root_storage/root_rntuple_write_container.cppform/root_storage/root_rntuple_write_container.hppform/root_storage/root_rfield_write_container.cpp
Use `.hpp` for header files, `.cpp` for implementation, and `*_test.cpp` for test files in C++ Enforce 100-character line limit and 2-space indentation in C++ code via `.clang-format` Use `QualifierAlignment: Right` (east-const) style: `int...
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Files:
form/root_storage/root_rntuple_write_container.cppform/root_storage/root_rntuple_write_container.hppform/root_storage/root_rfield_write_container.cpp
Avoid boolean parameters in C++ interfaces; prefer enumerations instead
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Files:
form/root_storage/root_rntuple_write_container.hpp
🪛 Cppcheck (2.21.0)
form/root_storage/root_rntuple_write_container.cpp
[error] 21-21: failed to evaluate #if condition, undefined function-like macro invocation
(syntaxError)
🔇 Additional comments (3)
form/root_storage/root_rntuple_write_container.cpp (1)
15-15: LGTM!Also applies to: 30-43, 56-80
form/root_storage/root_rntuple_write_container.hpp (1)
60-70: LGTM!Also applies to: 72-74
form/root_storage/root_rfield_write_container.cpp (1)
33-40: LGTM!Also applies to: 63-68, 78-85
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Format Fixes Applied✅ clang-format fixes pushed (commit b921b3a) |
Codecov Report❌ Patch coverage is
❌ Your patch check has failed because the patch coverage (71.05%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage. @@ Coverage Diff @@
## main #880 +/- ##
==========================================
- Coverage 85.13% 85.06% -0.08%
==========================================
Files 175 175
Lines 7601 7611 +10
Branches 908 910 +2
==========================================
+ Hits 6471 6474 +3
- Misses 892 896 +4
- Partials 238 241 +3
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Clang-Tidy Check ResultsClang-tidy found the following issue(s) on lines changed by this pull request: |
1 participant
RNTuple components that are used by multiple write containers are now
private. FORM containers manipulate them through accessor functions. These accessor functions ensure that the RNTupleModel is converted to an RNTupleWriter the first time it is used. This both solves issue #867 and sets FORM up for success with concurrent fills in the future.Code
root_rntuple_write_container_imp.get_writer(),get_model(), andget_entry()accessors.RNTupleWriterlazily throughRNTupleWriter::Append.root_tfile_impand report invalid or missing files.Concurrency
Tests