Module: DynamicMigrations::Postgres::Server::Database::Differences::ToMigrations::Schemas::Tables::Validations

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

Instance Method Summary collapse

Instance Method Details

#process_validation(schema_name, table_name, validation_name, configuration_validation, database_validation) ⇒ Object 



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# File 'lib/dynamic_migrations/postgres/server/database/differences/to_migrations/schemas/tables/validations.rb', line 22

def process_validation schema_name, table_name, validation_name, configuration_validation, database_validation
  # If the validation exists in the configuration but not in the database
  # then we have to create it.
  if configuration_validation[:exists] == true && !database_validation[:exists]
    log.debug "    Validation `#{validation_name}` exists in configuration but not in the database"

    # a migration to create the validation
    validation = @database.configured_schema(schema_name).table(table_name).validation(validation_name)
    @generator.add_validation validation

  # If the schema exists in the database but not in the configuration
  # then we need to delete it.
  elsif database_validation[:exists] == true && !configuration_validation[:exists]
    log.debug "    Validation `#{validation_name}` exists in database but not in the configuration"

    # a migration to create the validation
    validation = @database.loaded_schema(schema_name).table(table_name).validation(validation_name)
    @generator.remove_validation validation

  # If the validation exists in both the configuration and database representations
  # but the definition (except description, which is handled seeprately below) is different
  # then we need to update the definition.
  elsif configuration_validation.except(:exists, :description).filter { |name, attributes| attributes[:matches] == false }.any?
    log.debug "    Validation `#{validation_name}` exists in both configuration and the database"

    log.debug "      Validation `#{validation_name}` is different"
    # recreate the validation
    original_validation = @database.loaded_schema(schema_name).table(table_name).validation(validation_name)
    updated_validation = @database.configured_schema(schema_name).table(table_name).validation(validation_name)
    @generator.recreate_validation original_validation, updated_validation
    # does the description also need to be updated
    if configuration_validation[:description][:matches] == false
      # if the description was removed
      if configuration_validation[:description].nil?
        log.debug "      Validation `#{validation_name}` description exists in database but not in the configuration"
        @generator.remove_validation_comment updated_validation
      else
        log.debug "      Validation `#{validation_name}` does not match"
        @generator.set_validation_comment updated_validation
      end
    end

  # If the validation exists in both the configuration and database representations
  # but the description is different then we need to update the description.
  elsif configuration_validation[:description][:matches] == false
    log.debug "    Validation `#{validation_name}` exists in both configuration and the database"

    validation = @database.configured_schema(schema_name).table(table_name).validation(validation_name)
    # if the description was removed
    if configuration_validation[:description].nil?
      log.debug "      Validation `#{validation_name}` description exists in database but not in the configuration"
      @generator.remove_validation_comment validation
    else
      log.debug "      Validation `#{validation_name}` does not match"
      @generator.set_validation_comment validation
    end
  end
end

#process_validations(schema_name, table_name, configuration_validations, database_validations) ⇒ Object 



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# File 'lib/dynamic_migrations/postgres/server/database/differences/to_migrations/schemas/tables/validations.rb', line 12

def process_validations schema_name, table_name, configuration_validations, database_validations
  # process all the validations
  log.debug "    Processing Validations"
  validation_names = (configuration_validations.keys + database_validations.keys).uniq
  validation_names.each do |validation_name|
    log.debug "    Processing Validation #{validation_name}"
    process_validation schema_name, table_name, validation_name, configuration_validations[validation_name] || {}, database_validations[validation_name] || {}
  end
end