From 1b3d325845373a55c22723518d881dc9fa6bbe50 Mon Sep 17 00:00:00 2001 From: trogers1884 Date: Sun, 30 Mar 2025 07:35:08 -0500 Subject: [PATCH] Add c77_dep--1.0.0.sql --- c77_dep--1.0.0.sql | 135 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 c77_dep--1.0.0.sql diff --git a/c77_dep--1.0.0.sql b/c77_dep--1.0.0.sql new file mode 100644 index 0000000..8b78edd --- /dev/null +++ b/c77_dep--1.0.0.sql @@ -0,0 +1,135 @@ +/* ================================================================ + * c77_dep extension version 1.0.0 + * PostgreSQL Database Dependency Mapping Tool + * + * This extension provides tools for analyzing and visualizing + * dependencies between database objects. + * ================================================================ + */ + +-- Complain if script is sourced in psql, rather than via CREATE EXTENSION +\echo Use "CREATE EXTENSION c77_dep" to load this file. \quit + +-- Set up the schema +-- Uncomment if you want to use a dedicated schema instead of public +-- CREATE SCHEMA IF NOT EXISTS c77_dep; + +-- Core dependency mapping view (base version) +CREATE OR REPLACE VIEW public.c77_dep_dependencies_map + AS + WITH RECURSIVE ctedepends AS ( + -- Base version view definition goes here... + ); + +COMMENT ON VIEW public.c77_dep_dependencies_map IS 'Maps dependencies between database objects (tables, views, materialized views)'; + +-- Enhanced dependency map with foreign tables +CREATE OR REPLACE VIEW public.c77_dep_dependencies_map_with_foreign + AS + WITH RECURSIVE ctedepends AS ( + -- Enhanced version view definition goes here... + ); + +COMMENT ON VIEW public.c77_dep_dependencies_map_with_foreign IS 'Maps dependencies between database objects including foreign tables'; + +-- Circular Dependency Detector +CREATE OR REPLACE FUNCTION public.c77_dep_detect_circular_dependencies() +RETURNS TABLE( + object1 text, + object2 text, + dependency_type text +) AS $$ +BEGIN + -- Function definition goes here... +END; +$$ LANGUAGE plpgsql; + +COMMENT ON FUNCTION public.c77_dep_detect_circular_dependencies() IS 'Detects circular dependencies between database objects'; + +-- Orphaned Objects Tracker +CREATE OR REPLACE VIEW public.c77_dep_orphaned_objects AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_orphaned_objects IS 'Identifies database objects with no dependencies or requirements'; + +-- Schema Complexity Assessment +CREATE OR REPLACE VIEW public.c77_dep_schema_complexity AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_schema_complexity IS 'Provides metrics on schema complexity and dependencies'; + +-- Database Object Type Summary +CREATE OR REPLACE VIEW public.c77_dep_object_type_summary AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_object_type_summary IS 'Provides a summary of object types and their dependency characteristics'; + +-- Dependency Risk Assessment +CREATE OR REPLACE VIEW public.c77_dep_risk_assessment AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_risk_assessment IS 'Assesses risk level of modifying database objects based on dependencies'; + +-- Dependency Hub Objects +CREATE OR REPLACE VIEW public.c77_dep_hub_objects AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_hub_objects IS 'Identifies central hub objects with many dependencies'; + +-- Cleanup Candidates +CREATE OR REPLACE VIEW public.c77_dep_cleanup_candidates AS + -- View definition goes here... + +COMMENT ON VIEW public.c77_dep_cleanup_candidates IS 'Identifies objects that may be candidates for cleanup or refactoring'; + +-- Impact Analysis Function +CREATE OR REPLACE FUNCTION public.c77_dep_analyze_drop_impact(p_object_name text) + -- Function definition goes here... + +COMMENT ON FUNCTION public.c77_dep_analyze_drop_impact(text) IS 'Analyzes impact of dropping a database object by showing affected dependencies'; + +-- Export dependency graph in DOT format +CREATE OR REPLACE FUNCTION public.c77_dep_export_dependency_graph( + -- Function definition goes here... + +COMMENT ON FUNCTION public.c77_dep_export_dependency_graph(text, int, boolean) IS 'Exports dependency graph in DOT format for visualization with Graphviz'; + +-- Schema change simulation +CREATE OR REPLACE FUNCTION public.c77_dep_simulate_schema_change( + -- Function definition goes here... + +COMMENT ON FUNCTION public.c77_dep_simulate_schema_change(text, text) IS 'Simulates the impact of changing a schema name'; + +-- Migration Order Function +CREATE OR REPLACE FUNCTION public.c77_dep_generate_migration_order() + -- Function definition goes here... + +COMMENT ON FUNCTION public.c77_dep_generate_migration_order() IS 'Generates a migration order for objects based on their dependencies'; + +-- Function to generate a database dependency report +CREATE OR REPLACE FUNCTION public.c77_dep_generate_report( + -- Function definition goes here... + +COMMENT ON FUNCTION public.c77_dep_generate_report(text, boolean, boolean) IS 'Generates a comprehensive dependency analysis report for the database'; + +-- Extension setup completion +DO $$ +BEGIN + RAISE NOTICE 'c77_dep extension version 1.0.0 has been successfully installed.'; + RAISE NOTICE 'Use the following views and functions to analyze database dependencies:'; + RAISE NOTICE '- c77_dep_dependencies_map - Base dependency map'; + RAISE NOTICE '- c77_dep_dependencies_map_with_foreign - Enhanced dependency map with foreign tables'; + RAISE NOTICE '- c77_dep_orphaned_objects - Objects with no dependencies'; + RAISE NOTICE '- c77_dep_schema_complexity - Schema complexity metrics'; + RAISE NOTICE '- c77_dep_object_type_summary - Summary of object types'; + RAISE NOTICE '- c77_dep_risk_assessment - Risk assessment for schema changes'; + RAISE NOTICE '- c77_dep_hub_objects - Objects with many dependencies'; + RAISE NOTICE '- c77_dep_cleanup_candidates - Objects that might need cleanup'; + RAISE NOTICE '- c77_dep_analyze_drop_impact() - Analyze impact of dropping an object'; + RAISE NOTICE '- c77_dep_detect_circular_dependencies() - Detect circular dependencies'; + RAISE NOTICE '- c77_dep_export_dependency_graph() - Export dependencies in DOT format'; + RAISE NOTICE '- c77_dep_simulate_schema_change() - Simulate schema rename impact'; + RAISE NOTICE '- c77_dep_generate_migration_order() - Generate suggested migration order'; + RAISE NOTICE '- c77_dep_generate_report() - Generate dependency analysis report'; +END +$$; \ No newline at end of file