abstract class DB::Statement

• DB::Statement
• Reference
• Object

Overview

Represents a query in a Connection. It should be created by QueryMethods.

Note to implementors

1. Subclass Statements
2. Statements are created from a custom driver Connection#prepare method.
3. #perform_query executes a query that is expected to return a ResultSet
4. #perform_exec executes a query that is expected to return an ExecResult
5. #do_close is called to release the statement resources.

Included Modules

• DB::StatementMethods

Defined in:

Constructors

• .new(connection : Connection, command : String)

Instance Method Summary

• #command : String
• #exec : DB::ExecResult

  See QueryMethods#exec

• #exec(*args_, args : Array | Nil = nil) : DB::ExecResult

  See QueryMethods#exec

• #query : DB::ResultSet

  See QueryMethods#query

• #query(*args_, args : Array | Nil = nil) : DB::ResultSet

  See QueryMethods#query

• #release_connection

Macro Summary

• def_around_query_or_exec(&block)

  This macro allows injecting code to be run before and after the execution of the request.

Constructor Detail

Instance Method Detail

Macro Detail

class DB::Statement
  def_around_query_or_exec do |args|
    # do something before query or exec
    res = yield
    # do something after query or exec
    res
  end
end