Module: Spanner::Translator::Schema

Defined in:
lib/spanner/translator/schema.rb

Overview

Access a Rails formatted db/schema.rb file and return create_table source

Class Method Summary collapse

Class Method Details

.extract_create_table(table_name) ⇒ Object

extract the Ruby create_table statement for the given table name



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# File 'lib/spanner/translator/schema.rb', line 22

def extract_create_table(table_name)
  legacy_schema.match(/create_table "#{table_name}".*?end$/m)[0]
end

.extract_create_table_ast(table_name) ⇒ Object

extract the Parser::AST for the given table name, see https://github.com/whitequark/parser/blob/master/doc/AST_FORMAT.md



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# File 'lib/spanner/translator/schema.rb', line 28

def extract_create_table_ast(table_name)
  source = extract_create_table(table_name)
  RuboCop::AST::ProcessedSource.new(source, RUBY_VERSION.to_f).ast
end

.legacy_schema ⇒ Object

Raises:



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# File 'lib/spanner/translator/schema.rb', line 15

def legacy_schema
  raise Spanner::Translator::Error, "db/schema.rb not found" unless File.exist?(legacy_schema_path)

  @legacy_schema ||= File.read(legacy_schema_path)
end

.legacy_schema_path ⇒ Object 



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# File 'lib/spanner/translator/schema.rb', line 11

def legacy_schema_path
  Spanner::Translator.configuration.db_schema
end