Class: ActiveGroonga::Migrator

Inherits:
Object
  • Object
show all
Defined in:
lib/active_groonga/migrator.rb

Instance Method Summary collapse

Constructor Details

#initialize(direction, migrations_path) ⇒ Migrator

Returns a new instance of Migrator.


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# File 'lib/active_groonga/migrator.rb', line 92

def initialize(direction, migrations_path)
  @direction = direction
  @migrations_path = migrations_path
  unless @migrations_path.is_a?(Pathname)
    @migrations_path = Pathanme(@migrations_path)
  end
end

Instance Method Details

#current_version ⇒ Object 


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# File 'lib/active_groonga/migrator.rb', line 130

def current_version
  management_table.current_version
end

#down? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/active_groonga/migrator.rb', line 126

def down?
  @direction == :down
end

#management_table ⇒ Object 


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# File 'lib/active_groonga/migrator.rb', line 138

def management_table
  @management_table ||= SchemaManagementTable.new
end

#migrate(target_version = nil) ⇒ Object 


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# File 'lib/active_groonga/migrator.rb', line 100

def migrate(target_version=nil)
  _current_version = current_version
  migration_entries.each do |entry|
    if up?
      next if entry.version <= _current_version
    else
      next if entry.version > _current_version
    end
    Base.logger.info("Migrating to #{entry.name} (#{entry.version})")
    active_groonga_schema = Schema.new(:context => Base.context)
    active_groonga_schema.define do |schema|
      entry.migrate(@direction, schema)
    end
    if up?
      management_table.update_version(entry.version)
    else
      management_table.remove_version(entry.version)
    end
    break if entry.version == target_version
  end
end

#migrated_versions ⇒ Object 


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# File 'lib/active_groonga/migrator.rb', line 134

def migrated_versions
  management_table.migrated_versions
end

#up? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/active_groonga/migrator.rb', line 122

def up?
  @direction == :up
end