Module: DataMapper::Migrations::DataObjectsAdapter::SQL

Included in:
DataMapper::Migrations::DataObjectsAdapter
Defined in:
lib/dm-migrations/adapters/dm-do-adapter.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#add_column_statement ⇒ 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-do-adapter.rb', line 258

def add_column_statement
  'ADD COLUMN'
end

#alter_table_add_column_statement(connection, table_name, schema_hash) ⇒ 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-do-adapter.rb', line 136

def alter_table_add_column_statement(connection, table_name, schema_hash)
  "ALTER TABLE #{quote_name(table_name)} #{add_column_statement} #{property_schema_statement(connection, schema_hash)}"
end

#create_index_statement(model, index_name, fields) ⇒ 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-do-adapter.rb', line 172

def create_index_statement(model, index_name, fields)
  table_name = model.storage_name(name)

  DataMapper::Ext::String.compress_lines(<<-SQL)
    CREATE INDEX #{quote_name("index_#{table_name}_#{index_name}")} ON
    #{quote_name(table_name)} (#{fields.map { |field| quote_name(field) }.join(', ')})
  SQL
end

#create_index_statements(model) ⇒ 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-do-adapter.rb', line 162

def create_index_statements(model)
  name       = self.name
  table_name = model.storage_name(name)

  indexes(model).map do |index_name, fields|
    create_index_statement(model, index_name, fields)
  end
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-do-adapter.rb', line 141

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(', ')},
    PRIMARY KEY(#{ properties.key.map { |property| quote_name(property.field) }.join(', ')}))
  SQL

  statement
end

#create_unique_index_statements(model) ⇒ 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-do-adapter.rb', line 182

def create_unique_index_statements(model)
  name           = self.name
  table_name     = model.storage_name(name)
  key            = model.key(name).map { |property| property.field }
  unique_indexes = unique_indexes(model).reject { |index_name, fields| fields == key }

  unique_indexes.map do |index_name, fields|
    DataMapper::Ext::String.compress_lines(<<-SQL)
      CREATE UNIQUE INDEX #{quote_name("unique_#{table_name}_#{index_name}")} ON
      #{quote_name(table_name)} (#{fields.map { |field| quote_name(field) }.join(', ')})
    SQL
  end
end

#drop_table_statement(model) ⇒ 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-do-adapter.rb', line 152

def drop_table_statement(model)
  table_name = quote_name(model.storage_name(name))
  if supports_drop_table_if_exists?
    "DROP TABLE IF EXISTS #{table_name}"
  else
    "DROP TABLE #{table_name}"
  end
end

#indexes(model) ⇒ 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-do-adapter.rb', line 248

def indexes(model)
  model.properties(name).indexes
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-do-adapter.rb', line 197

def property_schema_hash(property)
  primitive = property.primitive
  type_map  = self.class.type_map

  schema = (type_map[property.class] || type_map[property.class.superclass] || type_map[primitive]).merge(:name => property.field)

  schema_primitive = schema[:primitive]

  if primitive == String && schema_primitive != 'TEXT' && schema_primitive != 'CLOB' && schema_primitive != 'NVARCHAR'
    schema[:length] = property.length
  elsif primitive == BigDecimal || primitive == Float
    schema[:precision] = property.precision
    schema[:scale]     = property.scale
  end

  schema[:allow_nil] = property.allow_nil?
  schema[:serial]    = property.serial?

  default = property.default

  if default.nil? || default.respond_to?(:call)
    # remove the default if the property does not allow nil
    schema.delete(:default) unless schema[:allow_nil]
  else
    schema[:default] = property.dump(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-do-adapter.rb', line 228

def property_schema_statement(connection, schema)
  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 == 'max'
    statement << '(max)'
  elsif length
    statement << "(#{connection.quote_value(length)})"
  end

  statement << " DEFAULT #{connection.quote_value(schema[:default])}" if schema.key?(:default)
  statement << ' NOT NULL' unless schema[:allow_nil]
  statement
end

#schema_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.

Raises:

  • (NotImplementedError) 


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# File 'lib/dm-migrations/adapters/dm-do-adapter.rb', line 131

def schema_name
  raise NotImplementedError, "#{self.class}#schema_name 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-do-adapter.rb', line 126

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.

Adapters that support AUTO INCREMENT fields for CREATE TABLE statements should overwrite this to return true

Returns:

  • (Boolean) 


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# File 'lib/dm-migrations/adapters/dm-do-adapter.rb', line 121

def supports_serial?
  false
end

#unique_indexes(model) ⇒ 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-do-adapter.rb', line 253

def unique_indexes(model)
  model.properties(name).unique_indexes
end