Class: SQL::TableCreator

Inherits:
Object
  • Object
show all
Extended by:
DataMapper::Property::Lookup
Defined in:
lib/dm-migrations/sql/table_creator.rb

Defined Under Namespace

Classes: Column, SqlExpr

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(adapter, table_name, opts = {}, &block) ⇒ TableCreator

Returns a new instance of TableCreator.



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# File 'lib/dm-migrations/sql/table_creator.rb', line 10

def initialize(adapter, table_name, opts = {}, &block)
  @adapter = adapter
  @table_name = table_name.to_s
  @opts = opts

  @columns = []

  self.instance_eval &block
end

Instance Attribute Details

#opts ⇒ Object

Returns the value of attribute opts.



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# File 'lib/dm-migrations/sql/table_creator.rb', line 8

def opts
  @opts
end

#table_name ⇒ Object

Returns the value of attribute table_name.



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# File 'lib/dm-migrations/sql/table_creator.rb', line 8

def table_name
  @table_name
end

Instance Method Details

#column(name, type, opts = {}) ⇒ Object 



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# File 'lib/dm-migrations/sql/table_creator.rb', line 24

def column(name, type, opts = {})
  @columns << Column.new(@adapter, name, type, opts)
end

#now ⇒ Object

A helper for using the native NOW() SQL function in a default



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# File 'lib/dm-migrations/sql/table_creator.rb', line 33

def now
  SqlExpr.new('NOW()')
end

#quoted_table_name ⇒ Object 



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# File 'lib/dm-migrations/sql/table_creator.rb', line 20

def quoted_table_name
  @adapter.send(:quote_name, table_name)
end

#to_sql ⇒ Object 



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# File 'lib/dm-migrations/sql/table_creator.rb', line 28

def to_sql
  "CREATE TABLE #{quoted_table_name} (#{@columns.map{ |c| c.to_sql }.join(', ')})#{@adapter.table_options(@opts)}"
end

#uuid ⇒ Object

A helper for using the native UUID() SQL function in a default



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# File 'lib/dm-migrations/sql/table_creator.rb', line 38

def uuid
  SqlExpr.new('UUID()')
end