teaql-data-service 2.0.1

TeaQL core, SQL, runtime, dialect, and macro crates for model-driven data access
Documentation

teaql-data-service

Abstract data service executor traits that decouple the TeaQL runtime from concrete database backends.

This crate defines the interface boundary between the high-level TeaQL runtime (query planning, graph writes, relation enhancement) and the low-level database drivers. Backend provider crates (e.g. teaql-provider-rusqlite, teaql-provider-sqlx-postgres) implement these traits so the runtime never depends on a specific database library directly.

Key Traits

Trait Purpose
DataServiceExecutor Base trait exposing backend capability flags
QueryExecutor Execute SelectQuery requests and return typed rows
MutationExecutor Execute insert / update / delete / recover mutations
TransactionExecutor Begin transactions that combine query + mutation in an atomic scope
SchemaExecutor Ensure entity tables and columns exist in the backing store
IdGeneratorExecutor Generate unique entity IDs through the backend's id-space mechanism

Supporting Types

  • QueryRequest / QueryResult — query envelope with trace chain and execution metadata
  • MutationRequest / MutationResult — mutation envelope supporting single and batch operations
  • SchemaRequest / SchemaResult — schema migration envelope
  • ExecutionMetadata — timing, affected rows, debug query, and backend request ID
  • DataServiceCapabilities — declares which executor capabilities a backend supports
  • DataServiceOperation — enum of operation kinds for metadata tagging