Class: Groonga::Schema::IndexColumnDefinition
- Inherits:
-
Object
- Object
- Groonga::Schema::IndexColumnDefinition
- Includes:
- Path
- Defined in:
- lib/groonga/schema.rb
Instance Attribute Summary collapse
-
#name ⇒ Object
Returns the value of attribute name.
-
#options ⇒ Object
readonly
Returns the value of attribute options.
-
#target_columns ⇒ Object
Returns the value of attribute target_columns.
-
#target_table ⇒ Object
Returns the value of attribute target_table.
Class Method Summary collapse
Instance Method Summary collapse
- #define(table_definition, table) ⇒ Object
-
#initialize(name, options = {}) ⇒ IndexColumnDefinition
constructor
A new instance of IndexColumnDefinition.
Methods included from Path
#columns_directory_path, #rmdir_if_available, #tables_directory_path
Constructor Details
#initialize(name, options = {}) ⇒ IndexColumnDefinition
Returns a new instance of IndexColumnDefinition.
1673 1674 1675 1676 1677 1678 1679 |
# File 'lib/groonga/schema.rb', line 1673 def initialize(name, ={}) @name = name @name = @name.to_s if @name.is_a?(Symbol) @options = ( || {}).dup @target_table = nil @target_columns = nil end |
Instance Attribute Details
#name ⇒ Object
Returns the value of attribute name.
1670 1671 1672 |
# File 'lib/groonga/schema.rb', line 1670 def name @name end |
#options ⇒ Object (readonly)
Returns the value of attribute options.
1671 1672 1673 |
# File 'lib/groonga/schema.rb', line 1671 def @options end |
#target_columns ⇒ Object
Returns the value of attribute target_columns.
1670 1671 1672 |
# File 'lib/groonga/schema.rb', line 1670 def target_columns @target_columns end |
#target_table ⇒ Object
Returns the value of attribute target_table.
1670 1671 1672 |
# File 'lib/groonga/schema.rb', line 1670 def target_table @target_table end |
Class Method Details
.column_name(context, target_table, target_columns) ⇒ Object
1655 1656 1657 1658 |
# File 'lib/groonga/schema.rb', line 1655 def column_name(context, target_table, target_columns) target_table = resolve(context, target_table) "#{target_table.name}_#{target_columns.join('_')}" end |
.resolve(context, object) ⇒ Object
1660 1661 1662 1663 1664 1665 1666 1667 |
# File 'lib/groonga/schema.rb', line 1660 def resolve(context, object) return object if object.is_a?(Groonga::Object) if object.respond_to?(:call) object = object.call(context) end return nil if object.nil? context[object] end |
Instance Method Details
#define(table_definition, table) ⇒ Object
1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 |
# File 'lib/groonga/schema.rb', line 1681 def define(table_definition, table) context = table_definition.context target_table = resolve_target_table(context) if target_table.nil? raise UnknownIndexTargetTable.new(@target_table) end nonexistent_columns = nonexistent_columns(target_table) unless nonexistent_columns.empty? raise UnknownIndexTarget.new(target_table, nonexistent_columns) end name = @name || self.class.column_name(context, target_table, @target_columns) index = table.column(name) if index return index if same_index?(context, index, target_table) if @options[:force] index.remove else = @options.merge(:type => :index, :target_table => target_table, :target_columns => @target_columns) raise ColumnCreationWithDifferentOptions.new(index, ) end end index = table.define_index_column(name, target_table, (context, table, name)) index.sources = @target_columns.collect do |column| target_table.column(column) end index end |