Module: DataMapper::Migrations::SqlserverAdapter::SQL

Included in:
DataMapper::Migrations::SqlserverAdapter
Defined in:
lib/dm-migrations/adapters/dm-sqlserver-adapter.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#character_set ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 108

def character_set
  @character_set ||= show_variable('character_set_connection') || DEFAULT_CHARACTER_SET
end

#collation ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 113

def collation
  @collation ||= show_variable('collation_connection') || DEFAULT_COLLATION
end

#create_table_statement(connection, model, properties) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 53

def create_table_statement(connection, model, properties)
  statement = DataMapper::Ext::String.compress_lines(<<-SQL)
    CREATE TABLE #{quote_name(model.storage_name(name))}
    (#{properties.map { |property| property_schema_statement(connection, property_schema_hash(property)) }.join(', ')}
  SQL

  unless properties.any? { |property| property.serial? }
    statement << ", PRIMARY KEY(#{properties.key.map { |property| quote_name(property.field) }.join(', ')})"
  end

  statement << ')'
  statement
end

#property_schema_hash(property) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 68

def property_schema_hash(property)
  schema = super

  if property.kind_of?(Property::Integer)
    min = property.min
    max = property.max

    schema[:primitive] = integer_column_statement(min..max) if min && max
  end

  if schema[:primitive] == 'TEXT'
    schema.delete(:default)
  end

  schema
end

#property_schema_statement(connection, schema) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 86

def property_schema_statement(connection, schema)
  if supports_serial? && schema[:serial]
    statement = quote_name(schema[:name])
    statement << " #{schema[:primitive]}"

    length = schema[:length]

    if schema[:precision] && schema[:scale]
      statement << "(#{[ :precision, :scale ].map { |key| connection.quote_value(schema[key]) }.join(', ')})"
    elsif length
      statement << "(#{connection.quote_value(length)})"
    end

    statement << ' IDENTITY'
  else
    statement = super
  end

  statement
end

#schema_name ⇒ Object Also known as: db_name

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 43

def schema_name
  # TODO: is there a cleaner way to find out the current DB we are connected to?
  @options[:path].split('/').last
end

#show_variable(name) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 118

def show_variable(name)
  raise "SqlserverAdapter#show_variable: Not implemented"
end

#supports_drop_table_if_exists? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 38

def supports_drop_table_if_exists?
  false
end

#supports_serial? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dm-migrations/adapters/dm-sqlserver-adapter.rb', line 33

def supports_serial?
  true
end