Module: PgSqlTriggers::Drift::DbQueries

Defined in:
lib/pg_sql_triggers/drift/db_queries.rb

Overview

rubocop:disable Metrics/ModuleLength – trigger introspection SQL in one place

Class Method Summary collapse

Class Method Details

.all_triggers ⇒ Object

Fetch all triggers from database



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# File 'lib/pg_sql_triggers/drift/db_queries.rb', line 8

def all_triggers
  sql = <<~SQL.squish
    SELECT
      t.oid AS trigger_oid,
      t.tgname AS trigger_name,
      c.relname AS table_name,
      n.nspname AS schema_name,
      p.proname AS function_name,
      pg_get_triggerdef(t.oid) AS trigger_definition,
      pg_get_functiondef(p.oid) AS function_definition,
      t.tgenabled AS enabled,
      t.tgisinternal AS is_internal,
      t.tgconstraint AS tgconstraint,
      t.tgdeferrable AS tgdeferrable,
      t.tginitdeferred AS tginitdeferred
    FROM pg_trigger t
    JOIN pg_class c ON t.tgrelid = c.oid
    JOIN pg_namespace n ON c.relnamespace = n.oid
    JOIN pg_proc p ON t.tgfoid = p.oid
    WHERE NOT t.tgisinternal
      AND n.nspname = $1
      AND t.tgname NOT LIKE 'RI_%'
    ORDER BY c.relname, t.tgname;
  SQL

  execute_query(sql, [schema_name])
end

.find_function(function_name) ⇒ Object

Fetch function body by function name



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# File 'lib/pg_sql_triggers/drift/db_queries.rb', line 96

def find_function(function_name)
  sql = <<~SQL.squish
    SELECT
      p.proname AS function_name,
      pg_get_functiondef(p.oid) AS function_definition
    FROM pg_proc p
    JOIN pg_namespace n ON p.pronamespace = n.oid
    WHERE p.proname = $1
      AND n.nspname = $2;
  SQL

  result = execute_query(sql, [function_name, schema_name])
  result.first
end

.find_trigger(trigger_name) ⇒ Object

Fetch single trigger



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# File 'lib/pg_sql_triggers/drift/db_queries.rb', line 37

def find_trigger(trigger_name)
  sql = <<~SQL.squish
    SELECT
      t.oid AS trigger_oid,
      t.tgname AS trigger_name,
      c.relname AS table_name,
      n.nspname AS schema_name,
      p.proname AS function_name,
      pg_get_triggerdef(t.oid) AS trigger_definition,
      pg_get_functiondef(p.oid) AS function_definition,
      t.tgenabled AS enabled,
      t.tgisinternal AS is_internal,
      t.tgconstraint AS tgconstraint,
      t.tgdeferrable AS tgdeferrable,
      t.tginitdeferred AS tginitdeferred
    FROM pg_trigger t
    JOIN pg_class c ON t.tgrelid = c.oid
    JOIN pg_namespace n ON c.relnamespace = n.oid
    JOIN pg_proc p ON t.tgfoid = p.oid
    WHERE t.tgname = $1
      AND NOT t.tgisinternal
      AND n.nspname = $2;
  SQL

  result = execute_query(sql, [trigger_name, schema_name])
  result.first
end

.find_triggers_for_table(table_name) ⇒ Object

Fetch triggers for a specific table



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# File 'lib/pg_sql_triggers/drift/db_queries.rb', line 66

def find_triggers_for_table(table_name)
  sql = <<~SQL.squish
    SELECT
      t.oid AS trigger_oid,
      t.tgname AS trigger_name,
      c.relname AS table_name,
      n.nspname AS schema_name,
      p.proname AS function_name,
      pg_get_triggerdef(t.oid) AS trigger_definition,
      pg_get_functiondef(p.oid) AS function_definition,
      t.tgenabled AS enabled,
      t.tgisinternal AS is_internal,
      t.tgconstraint AS tgconstraint,
      t.tgdeferrable AS tgdeferrable,
      t.tginitdeferred AS tginitdeferred
    FROM pg_trigger t
    JOIN pg_class c ON t.tgrelid = c.oid
    JOIN pg_namespace n ON c.relnamespace = n.oid
    JOIN pg_proc p ON t.tgfoid = p.oid
    WHERE c.relname = $1
      AND NOT t.tgisinternal
      AND n.nspname = $2
      AND t.tgname NOT LIKE 'RI_%'
    ORDER BY t.tgname;
  SQL

  execute_query(sql, [table_name, schema_name])
end