DP44/docs/ai/DataPRO/IService/SLICE Service.md

source_files, generated_at, model, schema_version, sha256

source_files	generated_at	model	schema_version	sha256
DataPRO/IService/SLICE Service/SystemAttribute.cs DataPRO/IService/SLICE Service/Attribute.cs DataPRO/IService/SLICE Service/EventAttribute.cs	2026-04-17T15:40:14.448178+00:00	zai-org/GLM-5-FP8	1	59bc9d04c12dd004

Documentation: DTS.Slice.Service Attribute Classes

1. Purpose

This module provides an attribute hierarchy for the SLICE Service within the DataPRO system. The Attribute class serves as a base class for typed attributes associated with different stores (Arm, Event, System, User), with serialization support for dictionary-to-byte-array conversions. SystemAttribute and EventAttribute are derived classes intended to represent system-level and event-level attributes respectively. Note: The majority of the implementation in SystemAttribute and EventAttribute is currently commented out, leaving these classes as essentially empty shells.

2. Public Interface

Attribute (Base Class)

Constructor:

• protected Attribute() — Parameterless constructor is protected, preventing direct instantiation.

Constants:

• public const int MaxSingleAttributeSize = 500 — Maximum size for a single attribute.
• public const int BulkAttributeStartNumber = 3000 — Starting number for bulk attributes.

Protected Properties:

• protected AttributeInterface Store { get; set; } — The attribute store type (Arm, Event, System, User).
• protected AttributeTypes.AttributeDataTypes datatype — The data type of the attribute.
• protected ushort key — The attribute key.
• protected object value — The attribute value.

Protected Methods:

• protected Dictionary<byte, double> ByteArrayToDict(byte[] bytes) — Deserializes a byte array into a Dictionary<byte, double>. Each pair consists of 1 byte key + 8 bytes double value (9 bytes total per pair).
• protected byte[] DictToByteArray(Dictionary<byte, double> dict) — Serializes a Dictionary<byte, double> into a byte array using the same 9-byte-per-pair format.

Protected Enum:

• AttributeInterface — Values: Arm, Event, System, User

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SystemAttribute (Derived Class)

• Inherits from Attribute
• No active members. The class body contains only commented-out code referencing a TypeValues enum and derived attribute classes (SerialNumberAttribute, TotalEventsStoredAttribute).

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EventAttribute (Derived Class)

• Inherits from Attribute
• No active members. The class body contains only commented-out code referencing a TypeValues enum and numerous derived attribute classes (EventNumber, EventName, EventSampleRate, EventDescription, EventTotalSamples, EventTriggerSampleNumber, EventStartRecordSampleNumber, EventTotalChannels, EventFilterFrequency, EventStartTime, EventExcitation, PreEventScaleFactors, PostEventScaleFactors, EventConfigAttributes).

3. Invariants

• The Attribute constructor is protected; only derived classes can instantiate.
• Dictionary serialization format: Each key-value pair occupies exactly 9 bytes (1 byte for key + 8 bytes for double).
• ByteArrayToDict assumes the input byte array length is evenly divisible by the pair size (9 bytes); behavior is undefined otherwise.
• The Store property must be one of the four AttributeInterface values.

4. Dependencies

This module depends on:

• System (mscorlib)
• System.Collections.Generic (mscorlib)
• System.Text (mscorlib)
• DTS.Common.Utils — Imported in Attribute.cs but no types from this namespace are actively used in the visible code.
• DTS.DASLib.Command.SLICE — Provides ByteConvertor class (referenced in commented code) and AttributeTypes.AttributeDataTypes (referenced in active code).

What depends on this module:

• Cannot be determined from the provided source files alone.

Referenced but not defined in these files:

• AttributeTypes.AttributeDataTypes — Used for the datatype field; location unclear (possibly in `DTS.DASLib.Command