Datastar_Meetup/lcars/lcars_v0/sqlite/description.md

Features of the sqlite Go Package

This is a summary of the key features provided by the sqlite package, based on an analysis of database.go.

• Simplified Database Lifecycle Management:

  • Provides straightforward functions to New, Open, OpenInMemory, and Close SQLite databases.
  • Automatically creates a new database file if one doesn't exist, pre-configured with performance-oriented PRAGMA settings like WAL (Write-Ahead Logging) mode.

• Generic Data Handling:

  • Uses a Record type (map[string]any) to represent database rows, allowing for flexible interaction with tables without needing to define a struct for each one.

• High-Level CRUD Operations:

  • Offers simple methods for common database tasks:
    • ReadRecords: Execute any SELECT query with parameters.
    • GetRecord: Fetch a single record by its key.
    • UpsertRecord: A powerful function to either INSERT a new record or UPDATE an existing one if a conflict on the primary key occurs. This is handled atomically in the database using INSERT ... ON CONFLICT.
    • DeleteRecord: Remove a record by its key.

• Fluent Transaction API:

  • Implements a chainable transaction interface that simplifies running multiple operations in a single transaction.
  • Example: db.Begin().Next(action1).Next(action2).End()
  • The End() method automatically commits on success or rolls back if any step in the chain fails, ensuring data integrity.

• Database Introspection:

  • Includes helper functions to query database metadata, such as TableList() to get all table names, Version() for the SQLite engine version, and UserVersion() to manage schema versions.

• Abstraction and Safety:

  • Abstracts away the boilerplate of database/sql row scanning into Rows2record and Rows2records helpers.
  • Uses parameterized queries to prevent SQL injection vulnerabilities for data values.

• Utility Functions:

  • Provides a generic Value function to safely extract and type-assert a value from a Record.
  • Includes a NoRowsOk helper to gracefully handle queries that are expected to sometimes return no results, preventing "no rows found" from being treated as a critical error.

This package is designed as a high-level wrapper around Go's standard database/sql library, specifically tailored for SQLite to make common database operations more convenient and less error-prone.