Class: ActiveGroonga::SchemaManagementTable

Inherits:

Object

• Object
• ActiveGroonga::SchemaManagementTable

show all

Defined in:

lib/active_groonga/migrator.rb

Constant Summary

TABLE_NAME =

"schema_migrations"

Instance Method Summary (collapse)

• - (Object) current_version
• - (SchemaManagementTable) initialize constructor

  A new instance of SchemaManagementTable.

• - (Object) migrated_versions
• - (Object) remove_version(version)
• - (Object) update_version(version)

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# File 'lib/active_groonga/migrator.rb', line 47

def initialize
  ensure_table
  @table = Base.context[TABLE_NAME]
end

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# File 'lib/active_groonga/migrator.rb', line 52

def current_version
  @current_version ||= (migrated_versions.last || [0]).first
end

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# File 'lib/active_groonga/migrator.rb', line 56

def migrated_versions
  @migrated_versions ||= @table.collect do |record|
    [record.key, record.migrated_at]
  end.sort_by do |version, migrated_at|
    version
  end
end

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# File 'lib/active_groonga/migrator.rb', line 69

def remove_version(version)
  @table[version].delete
  clear_cache
end

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# File 'lib/active_groonga/migrator.rb', line 64

def update_version(version)
  @table.add(version, :migrated_at => Time.now)
  clear_cache
end