Module: DynamicMigrations::Postgres::Server::Database::Differences::ToMigrations::Schemas::Functions

Included in:
DynamicMigrations::Postgres::Server::Database::Differences::ToMigrations
Defined in:
lib/dynamic_migrations/postgres/server/database/differences/to_migrations/schemas/functions.rb

Instance Method Summary collapse

Instance Method Details

#process_function(schema_name, function_name, configuration_function, database_function) ⇒ Object 



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# File 'lib/dynamic_migrations/postgres/server/database/differences/to_migrations/schemas/functions.rb', line 21

def process_function schema_name, function_name, configuration_function, database_function
  # If the function exists in the configuration but not in the database
  # then we have to create it.
  if configuration_function[:exists] == true && !database_function[:exists]
    log.info "  Function `#{function_name}` exists in configuration but not in the database"

    # a migration to create the function
    function = @database.configured_schema(schema_name).function(function_name)
    @generator.create_function function

  # If the schema exists in the database but not in the configuration
  # then we need to delete it.
  elsif database_function[:exists] == true && !configuration_function[:exists]
    log.info "  Function `#{function_name}` exists in database but not in the configuration"

    # a migration to create the function
    function = @database.loaded_schema(schema_name).function(function_name)
    @generator.drop_function function

  # If the function exists in both the configuration and database representations
  # but the definition is different then we need to update the definition.
  elsif configuration_function[:normalized_definition][:matches] == false
    log.info "  Function `#{function_name}` exists in both configuration and the database"

    log.info "    Function `#{function_name}` definition is different"
    function = @database.configured_schema(schema_name).function(function_name)
    @generator.update_function function
    # does the description also need to be updated
    if configuration_function[:description][:matches] == false
      # if the description was removed
      if configuration_function[:description].nil?
        log.info "    Function `#{function_name}` description exists in database but not in the configuration"
        @generator.remove_function_comment function
      else
        log.info "    Function `#{function_name}` description does not match"
        @generator.set_function_comment function
      end
    end

  # If the function exists in both the configuration and database representations
  # but the description is different then we need to update the description.
  elsif configuration_function[:description][:matches] == false
    log.info "  Function `#{function_name}` exists in both configuration and the database"

    function = @database.configured_schema(schema_name).function(function_name)
    # if the description was removed
    if configuration_function[:description].nil?
      log.info "    Function `#{function_name}` description exists in database but not in the configuration"
      @generator.remove_function_comment function
    else
      log.info "    Function `#{function_name}` description does not match"
      @generator.set_function_comment function
    end
  end
end

#process_functions(schema_name, configuration_functions, database_functions) ⇒ Object 



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# File 'lib/dynamic_migrations/postgres/server/database/differences/to_migrations/schemas/functions.rb', line 11

def process_functions schema_name, configuration_functions, database_functions
  # process all the functions
  log.info "  Processing Functions..."
  function_names = (configuration_functions.keys + database_functions.keys).uniq
  function_names.each do |function_name|
    log.info "  Processing Function #{function_name}..."
    process_function schema_name, function_name, configuration_functions[function_name] || {}, database_functions[function_name] || {}
  end
end