Class: Sequel::TinyTDS::Database

Inherits:
Database show all
Includes:
MSSQL::DatabaseMethods
Defined in:
lib/sequel/adapters/tinytds.rb

Constant Summary collapse

DatasetClass = 
self

Constants included from MSSQL::DatabaseMethods

MSSQL::DatabaseMethods::AUTO_INCREMENT, MSSQL::DatabaseMethods::DECIMAL_TYPE_RE, MSSQL::DatabaseMethods::SERVER_VERSION_RE, MSSQL::DatabaseMethods::SERVER_VERSION_SQL, MSSQL::DatabaseMethods::SQL_BEGIN, MSSQL::DatabaseMethods::SQL_COMMIT, MSSQL::DatabaseMethods::SQL_ROLLBACK, MSSQL::DatabaseMethods::SQL_ROLLBACK_TO_SAVEPOINT, MSSQL::DatabaseMethods::SQL_SAVEPOINT

Constants inherited from Database

Database::ADAPTERS, Database::AUTOINCREMENT, Database::COLUMN_DEFINITION_ORDER, Database::COMMA_SEPARATOR, Database::DEFAULT_JOIN_TABLE_COLUMN_OPTIONS, Database::MSSQL_DEFAULT_RE, Database::MYSQL_TIMESTAMP_RE, Database::NOT_NULL, Database::NULL, Database::POSTGRES_DEFAULT_RE, Database::PRIMARY_KEY, Database::SQL_BEGIN, Database::SQL_COMMIT, Database::SQL_RELEASE_SAVEPOINT, Database::SQL_ROLLBACK, Database::SQL_ROLLBACK_TO_SAVEPOINT, Database::SQL_SAVEPOINT, Database::STRING_DEFAULT_RE, Database::TEMPORARY, Database::TRANSACTION_BEGIN, Database::TRANSACTION_COMMIT, Database::TRANSACTION_ISOLATION_LEVELS, Database::TRANSACTION_ROLLBACK, Database::UNDERSCORE, Database::UNIQUE, Database::UNSIGNED

Instance Attribute Summary

Attributes included from MSSQL::DatabaseMethods

#mssql_unicode_strings

Attributes inherited from Database

#cache_schema, #dataset_class, #default_schema, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #timezone, #transaction_isolation_level

Instance Method Summary collapse

Methods included from MSSQL::DatabaseMethods

#database_type, #indexes, #server_version, #supports_savepoints?, #supports_transaction_isolation_levels?, #supports_transactional_ddl?, #tables, #views

Methods inherited from Database

#<<, #[], adapter_class, #adapter_scheme, adapter_scheme, #add_column, #add_index, #add_servers, #after_commit, #after_rollback, #alter_table, #call, #cast_type_literal, connect, #create_join_table, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_view, #database_type, #dataset, #disconnect, #drop_column, #drop_index, #drop_join_table, #drop_table, #drop_table?, #drop_view, #dump_foreign_key_migration, #dump_indexes_migration, #dump_schema_cache, #dump_schema_cache?, #dump_schema_migration, #dump_table_schema, #each_server, #extend_datasets, #fetch, #foreign_key_list, #from, #from_application_timestamp, #get, #identifier_input_method, identifier_input_method, identifier_input_method=, #identifier_input_method=, #identifier_output_method, identifier_output_method, identifier_output_method=, #identifier_output_method=, #in_transaction?, #indexes, #initialize, #inspect, #literal, #load_schema_cache, #load_schema_cache?, #log_exception, #log_info, #log_yield, #logger=, #prepared_statement, #query, #quote_identifiers=, quote_identifiers=, #quote_identifiers?, #remove_servers, #rename_column, #rename_table, #run, #schema, #select, #serial_primary_key_options, #servers, #set_column_default, #set_column_type, #set_prepared_statement, single_threaded=, #single_threaded?, #supports_create_table_if_not_exists?, #supports_drop_table_if_exists?, #supports_prepared_transactions?, #supports_savepoints?, #supports_savepoints_in_prepared_transactions?, #supports_transaction_isolation_levels?, #supports_transactional_ddl?, #synchronize, #table_exists?, #tables, #test_connection, #to_application_timestamp, #transaction, #typecast_value, #uri, #url, #views

Methods included from Metaprogramming

#meta_def

Constructor Details

This class inherits a constructor from Sequel::Database

Instance Method Details

#connect(server) ⇒ Object

Transfer the :host and :user options to the :dataserver and :username options.



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# File 'lib/sequel/adapters/tinytds.rb', line 12

def connect(server)
  opts = server_opts(server)
  opts[:username] = opts[:user]
  set_mssql_unicode_strings
  TinyTds::Client.new(opts)
end

#execute(sql, opts = {}) ⇒ Object

Execute the given sql on the server. If the :return option is present, its value should be a method symbol that is called on the TinyTds::Result object returned from executing the sql. The value of such a method is returned to the caller. Otherwise, if a block is given, it is yielded the result object. If no block is given and a :return is not present, nil is returned.



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# File 'lib/sequel/adapters/tinytds.rb', line 25

def execute(sql, opts={})
  synchronize(opts[:server]) do |c|
    begin
      m = opts[:return]
      r = nil
      if (args = opts[:arguments]) && !args.empty?
        types = []
        values = []
        args.each_with_index do |(k, v), i|
          v, type = ps_arg_type(v)
          types << "@#{k} #{type}"
          values << "@#{k} = #{v}"
        end
        case m
        when :do
          sql = "#{sql}; SELECT @@ROWCOUNT AS AffectedRows"
          single_value = true
        when :insert
          sql = "#{sql}; SELECT CAST(SCOPE_IDENTITY() AS bigint) AS Ident"
          single_value = true
        end
        sql = "EXEC sp_executesql N'#{c.escape(sql)}', N'#{c.escape(types.join(', '))}', #{values.join(', ')}"
        log_yield(sql) do
          r = c.execute(sql)
          r.each{|row| return row.values.first} if single_value
        end
      else
        log_yield(sql) do
          r = c.execute(sql)
          return r.send(m) if m
        end
      end
      yield(r) if block_given?
    rescue TinyTds::Error => e
      raise_error(e, :disconnect=>!c.active?)
    ensure
     r.cancel if r && c.sqlsent?
    end
  end
end

#execute_ddl(sql, opts = {}) ⇒ Object

Execute the DDL sql on the database and return nil.



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# File 'lib/sequel/adapters/tinytds.rb', line 78

def execute_ddl(sql, opts={})
  execute(sql, opts.merge(:return=>:each))
  nil
end

#execute_dui(sql, opts = {}) ⇒ Object

Return the number of rows modified by the given sql.



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# File 'lib/sequel/adapters/tinytds.rb', line 67

def execute_dui(sql, opts={})
  execute(sql, opts.merge(:return=>:do))
end

#execute_insert(sql, opts = {}) ⇒ Object

Return the value of the autogenerated primary key (if any) for the row inserted by the given sql.



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# File 'lib/sequel/adapters/tinytds.rb', line 73

def execute_insert(sql, opts={})
  execute(sql, opts.merge(:return=>:insert))
end