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Class ZCX_LLM_VALIDATION

AI Generated documentation.

Overview

ZCX_LLM_VALIDATION is a custom exception class for validation and technical errors in SAP systems, specializing in Large Language Model (LLM) client operations. Inherits from CX_DYNAMIC_CHECK for runtime checks and implements IF_T100_MESSAGE for standardized message handling.

Key Public Components:

  • Exception Constants: Predefined error types (e.g., MODEL_DOES_NOT_EXIST, ENCRYPTION_FAILED) with message IDs (ZLLM_CLIENT) and attribute mappings.
  • Attributes: MV_ATTR1-MV_ATTR4 to store dynamic error details (e.g., model names, provider IDs).
  • Constructor: Initializes exception with message ID, attributes, and optional previous exception.

Dependencies

  • Inherits from CX_DYNAMIC_CHECK (SAP standard exception class).
  • Implements interface IF_T100_MESSAGE for message integration.

Details

Exception Structure

classDiagram  
  ZCX_LLM_VALIDATION --|> CX_DYNAMIC_CHECK  
  ZCX_LLM_VALIDATION ..|> IF_T100_MESSAGE  
  class ZCX_LLM_VALIDATION {  
    +UNSUPPORTED_TYPE  
    +VALUE_OUT_OF_RANGE  
    +HTTP_DESTINATION_ERROR  
    +ENCRYPTION_SETUP  
    ...  
    +MV_ATTR1 : STRING  
    +MV_ATTR2 : STRING  
    +constructor()  
  }

Key Aspects:

  1. Message Constants:
  2. Each constant defines:
    • msgid: Message class ZLLM_CLIENT
    • msgno: Unique message number (e.g., 002 for MODEL_DOES_NOT_EXIST)
    • Attribute bindings (up to 4 placeholders).

Example: 

constants:  
  begin of CLIENT_MODEL_NOT_FOUND,  
    msgid type symsgid value 'ZLLM_CLIENT',  
    msgno type symsgno value '005',  
    attr1 type scx_attrname value 'MV_ATTR1',  // Populated via MV_ATTR1  
    attr2 type scx_attrname value 'MV_ATTR2',  // Populated via MV_ATTR2  
  end of CLIENT_MODEL_NOT_FOUND.
  1. Attribute Handling:
  2. Attributes (MV_ATTR1-MV_ATTR4) inject runtime values into exception messages (e.g., invalid model name).

  3. Used in error messages via &MV_ATTR1& placeholders in message texts.

  4. Constructor Logic:

  5. Propagates attributes to superclass.
  6. Sets T100KEY for message resolution:
    • Uses default_textid if no TEXTID is provided.
    • Enables exception chaining via PREVIOUS parameter.

Typical Usage: 

RAISE EXCEPTION TYPE zcx_llm_validation  
  EXPORTING  
    textid = zcx_llm_validation=>model_does_not_exist  
    attr1  = 'MODEL_X'.

Throws an exception with message "Model MODEL_X does not exist" (assuming message 002 in ZLLM_CLIENT uses &MV_ATTR1&).