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module ActiveRecord
module ConnectionAdapters
module MySQL
class SchemaCreation < AbstractAdapter::SchemaCreation
delegate :add_sql_comment!, to: :@conn
private :add_sql_comment!
private
def visit_DropForeignKey(name)
"DROP FOREIGN KEY #{name}"
end
def visit_ColumnDefinition(o)
o.sql_type = type_to_sql(o.type, o.limit, o.precision, o.scale, o.unsigned)
super
end
def visit_AddColumnDefinition(o)
add_column_position!(super, column_options(o.column))
end
def visit_ChangeColumnDefinition(o)
change_column_sql = "CHANGE #{quote_column_name(o.name)} #{accept(o.column)}"
add_column_position!(change_column_sql, column_options(o.column))
end
def add_table_options!(create_sql, options)
add_sql_comment!(super, options[:comment])
end
def column_options(o)
column_options = super
column_options[:charset] = o.charset
column_options
end
def add_column_options!(sql, options)
if charset = options[:charset]
sql << " CHARACTER SET #{charset}"
end
if collation = options[:collation]
sql << " COLLATE #{collation}"
end
add_sql_comment!(super, options[:comment])
end
def add_column_position!(sql, options)
if options[:first]
sql << " FIRST"
elsif options[:after]
sql << " AFTER #{quote_column_name(options[:after])}"
end
sql
end
def index_in_create(table_name, column_name, options)
index_name, index_type, index_columns, _, _, index_using, comment = @conn.add_index_options(table_name, column_name, options)
add_sql_comment!("#{index_type} INDEX #{quote_column_name(index_name)} #{index_using} (#{index_columns})", comment)
end
end
end
end
end
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