Class: ActiveRecord::ConnectionAdapters::VirtualTable

Inherits:
Table
  • Object
show all
Defined in:
lib/rmtools/active_record/declarative.rb

Instance Method Summary collapse

Constructor Details

#initialize(name, connection, map = nil) ⇒ VirtualTable

Returns a new instance of VirtualTable.



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# File 'lib/rmtools/active_record/declarative.rb', line 30

def initialize name, connection, map=nil
  super name, connection
  case map
    when true; @map = []
    when Array; @map = map
  end
end

Instance Method Details

#change(*args) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/rmtools/active_record/declarative.rb', line 80

def change *args
  raise NotImplementedError, "don't use #change in declaration!"
end

#change_default(*args) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/rmtools/active_record/declarative.rb', line 84

def change_default *args
  raise NotImplementedError, "don't use #change_default in declaration!"
end

#column(name, *args) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 46

def column name, *args
  to_be_called = !column_exists(name)
  super if to_be_called
  $log.debug {debug_str :column, to_be_called,  !to_be_called, name, *args}
  @map << [name, *args] if @map
end

#column_exists(*args) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 13

def column_exists *args
  column_names = @base.columns(@table_name).names
  options = args.extract_options!
  names = args.dup
  args << options
  _or_ = (names[0] == :all) ? !names.shift : true
  names.each {|name| return _or_ if name.to_s.in(column_names) == _or_}
  !_or_
end

#debug_str(meth, called, exist, *args) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 9

def debug_str meth, called, exist, *args
  "Table.#{meth}(#{args.inspects*', '}) was#{' NOT' if !called} called due to #{'in' if !exist}existance"
end

#index(name, *args) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 67

def index name, *args
  to_be_called = !index_exists(name)
  super if to_be_called
  $log.debug {debug_str :index, to_be_called, !to_be_called, name, *args}
end

#index_exists(*indexes) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 23

def index_exists *indexes
  column_indexes = @base.indexes(@table_name).columnss.flatten
  _or_ = (indexes[0] == :all) ? !indexes.shift : true
  indexes.each {|index| return _or_ if index.to_s.in(column_indexes) == _or_}
  !_or_
end

#map! ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 38

def map!
  map_names = @map.firsts.to_ss
  @base.columns(@table_name).names.each {|name|
    name.in(map_names) ? @map.reject! {|_| _[0] == name} : remove(name)
  }
  @map.each {|col| column *col}
end

#references(*args) ⇒ Object Also known as: belongs_to 



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# File 'lib/rmtools/active_record/declarative.rb', line 94

def references *args
  to_be_called = !column_exists(*args.map {|col| "#{col}_id"})
  super if to_be_called
  $log.debug {debug_str :references, to_be_called,  !to_be_called, *args}
end

#remove(*args) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 101

def remove *args
  to_be_called = column_exists :all, *args
  super if to_be_called
  $log.debug {debug_str :remove, to_be_called, to_be_called, *args}
end

#remove_index(options) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/rmtools/active_record/declarative.rb', line 114

def remove_index options
  indexes = options.is(Hash) ? options[:column] : options
  raise ArgumentError, "can remove only default format named indexes in declaration!" if !indexes
  to_be_called = index_exists :all, *indexes
  super if to_be_called
  $log.debug {debug_str :remove_index, to_be_called,  to_be_called, options}
end

#remove_references(*args) ⇒ Object Also known as: remove_belongs_to 



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# File 'lib/rmtools/active_record/declarative.rb', line 107

def remove_references *args
  to_be_called = column_exists(:all, *args.map {|col| "#{col}_id"})
  super if to_be_called
  $log.debug {debug_str :remove_references, to_be_called, to_be_called, *args}
end

#remove_timestamps ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 122

def remove_timestamps
  to_be_called = column_exists 'created_at', 'updated_at'
  super if to_be_called
  $log.debug {debug_str :remove_timestamps, to_be_called, to_be_called}
end

#rename(column_name, new_column_name) ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 88

def rename column_name, new_column_name
  to_be_called = !column_exists(new_column_name)
  super if to_be_called
  $log.debug {debug_str :rename, to_be_called, !to_be_called, column_name, new_column_name}
end

#timestamps ⇒ Object 



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# File 'lib/rmtools/active_record/declarative.rb', line 73

def timestamps
  to_be_called = !column_exists('created_at', 'updated_at')
  super if to_be_called
  $log.debug {debug_str :timestamps, to_be_called, !to_be_called}
  @map.concat [[:created_at, :datetime], [:updated_at, :datetime]] if @map
end