---
source_files:
  - DataPRO/Modules/DatabaseImporter/DatabaseImport/Classes/Constants.cs
  - DataPRO/Modules/DatabaseImporter/DatabaseImport/Classes/Enums.cs
generated_at: "2026-04-16T04:29:22.195029+00:00"
model: "Qwen/Qwen3-Coder-Next-FP8"
schema_version: 1
sha256: "7d0744f20dc3772b"
---

# Classes

## Documentation: DatabaseImport Module – Constants and Enums

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### 1. Purpose  
This module provides foundational type definitions and symbolic constants used throughout the `DatabaseImport` subsystem, primarily to support test configuration, channel handling, and recording behavior in the DataPRO test framework. It centralizes string literals for non-ISO test object metadata and defines strongly-typed enumerations for recording modes, ISO channel compatibility policies, and test template metadata tags—enabling consistent interpretation of test setup data imported from external databases or configuration sources.

---

### 2. Public Interface  

#### Constants (`DatabaseImport.Constants`)  
- **`NON_ISO_TESTOBJECT_CHANNEL_TYPE`** (`public const string`)  
  String value: `"x_NonISOTestObjectType_x"`. Used as a channel type identifier for non-ISO test objects during import.  
- **`NON_ISO_TESTOBJECT_NAME`** (`public const string`)  
  String value: `"x_NonISOTestObjectName_x"`. Used as a channel name identifier for non-ISO test objects during import.  

#### Enumerations  

- **`RecordingModes`** (`public enum`)  
  Represents supported data acquisition recording strategies.  
  - `CircularBuffer`: `"RecordingModes_CircularBuffer"`  
  - `Recorder`: `"RecordingModes_Recorder"`  
  - `HybridRecorder`: `"RecordingModes_HybridRecorder"`  
  *Note:* Uses `[TypeConverter(typeof(EnumDescriptionTypeConverter))]` for localized description resolution.  

- **`IsoChannelSensorCompatibilityLevels`** (`public enum`)  
  Defines policy for handling non-ISO sensors attached to ISO channels:  
  - `DontWarn`: No warning or restriction.  
  - `Warn`: Issue warning but allow operation.  
  - `DontAllow`: Block operation if non-ISO sensor detected.  

- **`TestTemplateTags`** (`public enum`)  
  Contains 103 named constants representing keys for test template metadata fields (e.g., `"UploadData"`, `"RecordingMode"`, `"PreTriggerSeconds"`). Used to serialize/deserialize test configuration properties from structured data (e.g., XML, JSON, or database rows).  
  *Note:* Includes both high-level flags (`AllowMissingSensors`, `AutomaticProgression`) and granular settings (`AutomaticProgressionDelayMS`, `AutoVerifyDelaySeconds`).  

- **`StrictLevel`** (`public enum`)  
  Controls validation strictness during import:  
  - `Strict`: Enforce strict schema/data validation.  
  - `UpdateTable`: Allow schema updates or relaxed validation (e.g., for backward compatibility).  

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### 3. Invariants  
- All `TestTemplateTags` enum values are **string-identifiable keys**—their underlying integer values are irrelevant; only their symbolic names matter for lookup.  
- `RecordingModes` enum values are **exhaustive and mutually exclusive**—a test configuration must specify exactly one mode.  
- `IsoChannelSensorCompatibilityLevels` values define a **strict ordering of enforcement**: `DontWarn` ≤ `Warn` ≤ `DontAllow`.  
- `Constants` values are **fixed string literals**—no runtime modification or localization is performed within this module.  

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### 4. Dependencies  
- **Depends on**:  
  - `System` (for `TypeConverter`, `DescriptionAttribute`)  
  - `System.ComponentModel` (for `TypeConverter` and `DescriptionAttribute`)  
- **Used by**:  
  - Other modules in `DatabaseImport` (e.g., importers, validators, test template processors) that parse test configurations or validate channel/sensor compatibility.  
  - Likely consumed by UI layers (via `TypeConverter`) for localized enum descriptions.  

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### 5. Gotchas  
- **Non-ISO identifiers are placeholder strings**: The values `"x_NonISOTestObjectType_x"` and `"x_NonISOTestObjectName_x"` are *not* standardized—they are internal markers. Do not assume they match external schema names.  
- **`TestTemplateTags` enum is exhaustive but not self-documenting**: The enum names map directly to string keys (e.g., `TestTemplateTags.RecordingMode` → `"RecordingMode"`), but the *meaning* of each key is defined elsewhere (e.g., in schema docs or template parsers).  
- **`RecordingModes` descriptions are resource keys**: The `[Description(...)]` attributes contain *resource keys* (e.g., `"RecordingModes_CircularBuffer"`), not literal descriptions. Actual display text requires resource resolution via `EnumDescriptionTypeConverter`.  
- **`StrictLevel.UpdateTable` implies leniency**: This may bypass validation that would otherwise fail imports (e.g., missing required fields), risking data inconsistency if misused.  
- **No validation logic in this module**: These types define *what* can be configured, not *how*—validation rules reside in other modules (e.g., importers, validators).  

None identified beyond the above.