Add c77_dep--1.0.0.sql

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 $$
+BEGIN
+    RAISE NOTICE 'c77_dep extension version 1.0.0 has been successfully installed.';
+    RAISE NOTICE 'Use the following views and functions to analyze database dependencies:';
+    RAISE NOTICE '- c77_dep_dependencies_map - Base dependency map';
+    RAISE NOTICE '- c77_dep_dependencies_map_with_foreign - Enhanced dependency map with foreign tables';
+    RAISE NOTICE '- c77_dep_orphaned_objects - Objects with no dependencies';
+    RAISE NOTICE '- c77_dep_schema_complexity - Schema complexity metrics';
+    RAISE NOTICE '- c77_dep_object_type_summary - Summary of object types';
+    RAISE NOTICE '- c77_dep_risk_assessment - Risk assessment for schema changes';
+    RAISE NOTICE '- c77_dep_hub_objects - Objects with many dependencies';
+    RAISE NOTICE '- c77_dep_cleanup_candidates - Objects that might need cleanup';
+    RAISE NOTICE '- c77_dep_analyze_drop_impact() - Analyze impact of dropping an object';
+    RAISE NOTICE '- c77_dep_detect_circular_dependencies() - Detect circular dependencies';
+    RAISE NOTICE '- c77_dep_export_dependency_graph() - Export dependencies in DOT format';
+    RAISE NOTICE '- c77_dep_simulate_schema_change() - Simulate schema rename impact';
+    RAISE NOTICE '- c77_dep_generate_migration_order() - Generate suggested migration order';
+    RAISE NOTICE '- c77_dep_generate_report() - Generate dependency analysis report';
+END
+$$;