Module: Ridgepole::ExecuteExpander::ConnectionAdapterExt

Defined in:
lib/ridgepole/execute_expander.rb

Instance Method Summary collapse

Instance Method Details

#execute(*args) ⇒ Object 



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# File 'lib/ridgepole/execute_expander.rb', line 54

def execute(*args)
  name = args[1]
  execute_expander_internal_execute(args.fetch(0)) do |sql|
    super(sql, name)
  end
end

#execute_batch(statements, name = nil, **kwargs) ⇒ Object 



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# File 'lib/ridgepole/execute_expander.rb', line 61

def execute_batch(statements, name = nil, **kwargs)
  new_statements = []
  statements.each do |statement|
    execute_expander_internal_execute(statement) do |sql|
      new_statements << sql
    end
  end
  super(new_statements, name, **kwargs) unless new_statements.empty?
  statements
end

#execute_expander_internal_execute(sql, &block) ⇒ Object 



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# File 'lib/ridgepole/execute_expander.rb', line 16

def execute_expander_internal_execute(sql, &block)
  # Generated/virtual columns cannot have DEFAULT values in MySQL.
  # Rails' change_column always adds DEFAULT from the existing column,
  # so we strip it from the SQL for virtual columns.
  # cf. https://github.com/ridgepole/ridgepole/issues/482
  if Ridgepole::ConnectionAdapters.mysql? && !Ridgepole::ExecuteExpander.options[:bulk_change]
    # NOTE: bulk_change does not support changing MySQL generated columns with `DEFAULT NULL`.
    sql = sql.sub(/\bDEFAULT\s+NULL\z/i, '') if /\AALTER\s+TABLE\b/i.match?(sql) && /\bAS\s*\(/i.match?(sql) && /\bDEFAULT\s+NULL\z/i.match?(sql)
  end
  if Ridgepole::ExecuteExpander.noop
    if (callback = Ridgepole::ExecuteExpander.callback)
      sql = append_alter_extra(sql)
      callback.call(sql)
    end

    if /\A(SELECT|SHOW)\b/i.match?(sql)
      begin
        block.call(sql)
      rescue StandardError
        Stub.new
      end
    else
      Stub.new
    end
  elsif Ridgepole::ExecuteExpander.use_script
    if /\A(SELECT|SHOW)\b/i.match?(sql)
      block.call(sql)
    else
      sql = append_alter_extra(sql)
      Ridgepole::ExecuteExpander.sql_executer.execute(sql)
      nil
    end
  else
    sql = append_alter_extra(sql)
    block.call(sql)
  end
end