Class: Sequel::ODBC::Database

Inherits:
Database show all
Defined in:
lib/sequel_core/adapters/odbc.rb

Constant Summary collapse

GUARDED_DRV_NAME = 
/^\{.+\}$/.freeze
DRV_NAME_GUARDS = 
'{%s}'.freeze

Constants inherited from Database

Database::ADAPTERS, Database::SQL_BEGIN, Database::SQL_COMMIT, Database::SQL_ROLLBACK

Constants included from Schema::SQL

Schema::SQL::AUTOINCREMENT, Schema::SQL::CASCADE, Schema::SQL::COMMA_SEPARATOR, Schema::SQL::NOT_NULL, Schema::SQL::NO_ACTION, Schema::SQL::NULL, Schema::SQL::PRIMARY_KEY, Schema::SQL::RESTRICT, Schema::SQL::SET_DEFAULT, Schema::SQL::SET_NULL, Schema::SQL::TYPES, Schema::SQL::UNDERSCORE, Schema::SQL::UNIQUE, Schema::SQL::UNSIGNED

Instance Attribute Summary

Attributes inherited from Database

#default_schema, #loggers, #opts, #pool, #prepared_statements, #quote_identifiers, #upcase_identifiers

Instance Method Summary collapse

Methods inherited from Database

#<<, #[], adapter_class, adapter_scheme, #add_column, #add_index, #alter_table, #call, connect, #create_or_replace_view, #create_table, #create_table!, #create_view, #disconnect, #drop_column, #drop_index, #drop_table, #drop_view, #execute_ddl, #fetch, #from, #get, #inspect, #log_info, #logger, #logger=, #multi_threaded?, #query, quote_identifiers=, #quote_identifiers?, #rename_column, #rename_table, #select, #serial_primary_key_options, #set_column_default, #set_column_type, single_threaded=, #single_threaded?, #synchronize, #table_exists?, #test_connection, #typecast_value, upcase_identifiers=, #upcase_identifiers?, #uri

Methods included from Schema::SQL

#alter_table_sql, #alter_table_sql_list, #auto_increment_sql, #column_definition_sql, #column_list_sql, #column_references_sql, #constraint_definition_sql, #create_table_sql_list, #default_index_name, #drop_index_sql, #drop_table_sql, #filter_expr, #index_definition_sql, #index_list_sql_list, #literal, #on_delete_clause, #quote_identifier, #quote_schema_table, #rename_table_sql, #schema, #schema_utility_dataset

Constructor Details

#initialize(opts) ⇒ Database

Returns a new instance of Database.



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# File 'lib/sequel_core/adapters/odbc.rb', line 11

def initialize(opts)
  super(opts)
  case opts[:db_type]
  when 'mssql'
    require 'sequel_core/adapters/shared/mssql'
    extend Sequel::MSSQL::DatabaseMethods
  when 'progress'
    require 'sequel_core/adapters/shared/progress'
    extend Sequel::Progress::DatabaseMethods
  end
end

Instance Method Details

#connect(server) ⇒ Object 



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# File 'lib/sequel_core/adapters/odbc.rb', line 23

def connect(server)
  opts = server_opts(server)
  if opts.include? :driver
    drv = ::ODBC::Driver.new
    drv.name = 'Sequel ODBC Driver130'
    opts.each do |param, value|
      if :driver == param and not (value =~ GUARDED_DRV_NAME)
        value = DRV_NAME_GUARDS % value
      end
      drv.attrs[param.to_s.capitalize] = value
    end
    db = ::ODBC::Database.new
    conn = db.drvconnect(drv)
  else
    conn = ::ODBC::connect(opts[:database], opts[:user], opts[:password])
  end
  conn.autocommit = true
  conn
end

#dataset(opts = nil) ⇒ Object 



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# File 'lib/sequel_core/adapters/odbc.rb', line 43

def dataset(opts = nil)
  ODBC::Dataset.new(self, opts)
end

#execute(sql, opts = {}) ⇒ Object

ODBC returns native statement objects, which must be dropped if you call execute manually, or you will get warnings. See the fetch_rows method source code for an example of how to drop the statements.



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# File 'lib/sequel_core/adapters/odbc.rb', line 51

def execute(sql, opts={})
  log_info(sql)
  synchronize(opts[:server]) do |conn|
    r = conn.run(sql)
    yield(r) if block_given?
    r
  end
end

#execute_dui(sql, opts = {}) ⇒ Object Also known as: do 



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# File 'lib/sequel_core/adapters/odbc.rb', line 60

def execute_dui(sql, opts={})
  log_info(sql)
  synchronize(opts[:server]){|conn| conn.do(sql)}
end

#transaction(server = nil) ⇒ Object

Support single level transactions on ODBC



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# File 'lib/sequel_core/adapters/odbc.rb', line 67

def transaction(server=nil)
  synchronize(server) do |conn|
    return yield(conn) if @transactions.include?(Thread.current)
    log_info(begin_transaction_sql)
    conn.do(begin_transaction_sql)
    begin
      @transactions << Thread.current
      yield(conn)
    rescue ::Exception => e
      log_info(rollback_transaction_sql)
      conn.do(rollback_transaction_sql)
      transaction_error(e)
    ensure
      unless e
        log_info(commit_transaction_sql)
        conn.do(commit_transaction_sql)
      end
      @transactions.delete(Thread.current)
    end
  end
end