44 lines
3.7 KiB
Markdown
44 lines
3.7 KiB
Markdown
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---
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source_files:
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- Common/DTS.Common/Base/Model/BaseModel.cs
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generated_at: "2026-04-16T03:28:03.611960+00:00"
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model: "Qwen/Qwen3-Coder-Next-FP8"
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schema_version: 1
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sha256: "8eb3b4d63e76d9ee"
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---
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# Model
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## Documentation: `BaseModel<TModel>` Class
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### 1. Purpose
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`BaseModel<TModel>` is an abstract base class intended to provide foundational functionality for model objects within the DTS system. It encapsulates a generic `Model` property (of type `TModel`) and tracks whether the model instance has been persisted (via the `IsSaved` flag). It inherits from `BasePropertyChanged`, implying support for property change notifications (e.g., for UI binding), and implements `IBaseModel`, suggesting integration with a broader model abstraction layer. Its primary role is to standardize model representation and persistence state tracking across derived model types.
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### 2. Public Interface
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- **`public TModel Model { get; set; }`**
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Gets or sets the underlying model object. This is the core data container the `BaseModel<TModel>` wraps.
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- **`public bool IsSaved { get; private set; }`**
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Gets a boolean indicating whether the model has been saved (e.g., to a database or other persistent store). The setter is `private`, meaning only the class itself (or derived classes via base access) can update this flag—typically after a successful save operation.
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- **`public BaseModel()`**
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Public parameterless constructor. Allows instantiation of concrete derived classes. Note: Although the class is `abstract`, the constructor is public—this is a known pattern in C# for abstract classes to enable derived-class initialization.
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### 3. Invariants
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- `Model` may be `null` unless constrained by derived implementations (no explicit null-checking or initialization is present in this base class).
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- `IsSaved` starts as `false` by default (C# default for `bool`) and can only be set to `true` internally (e.g., by derived classes or the base class itself).
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- `BaseModel<TModel>` enforces that `TModel` must be a reference type (`class`), as specified by the generic constraint.
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### 4. Dependencies
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- **Inherits from**: `BasePropertyChanged` — implies reliance on a custom property change notification infrastructure (likely implementing `INotifyPropertyChanged` or similar).
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- **Implements**: `IBaseModel` — suggests a contract interface defined elsewhere in the codebase (not shown here).
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- **No external NuGet or framework dependencies** are evident from this file alone (aside from standard .NET types like `System` implicitly used by `bool`, `class`, etc.).
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- **Used by**: Any concrete model class that derives from `BaseModel<TModel>`. Likely consumed by data persistence services, view models, or UI layers that rely on `IBaseModel`.
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### 5. Gotchas
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- The constructor is `public` despite the class being `abstract`. While valid in C#, this may mislead developers into attempting direct instantiation (which would fail at compile time due to `abstract`). Ensure documentation clarifies that only derived classes may be instantiated.
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- `IsSaved` has no public setter, but no corresponding `MarkAsSaved()` or similar method is exposed—derived classes must manage this state internally (e.g., via internal methods or direct assignment in constructors). This could lead to inconsistent state if not handled carefully.
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- No validation or lifecycle hooks (e.g., `OnSaving`, `OnSaved`) are defined in this base class. Persistence logic must be implemented in derived classes.
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- The commented-out `//DependencyObject` suggests past or potential future integration with WPF’s dependency property system, but no such dependency is active in the current implementation.
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- **None identified from source alone** regarding behavioral quirks beyond the above structural observations.
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