Class: Sequel::Oracle::Database

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

Constant Summary collapse

CONNECTION_ERROR_CODES =

ORA-00028: your session has been killed ORA-01012: not logged on ORA-03113: end-of-file on communication channel ORA-03114: not connected to ORACLE

[ 28, 1012, 3113, 3114 ]

Constants included from DatabaseMethods

Sequel::Oracle::DatabaseMethods::AUTOINCREMENT, Sequel::Oracle::DatabaseMethods::TEMPORARY

Constants inherited from Database

Database::ADAPTERS, Database::AUTOINCREMENT, Database::CASCADE, Database::COLUMN_DEFINITION_ORDER, Database::COMMA_SEPARATOR, Database::MSSQL_DEFAULT_RE, Database::MYSQL_TIMESTAMP_RE, Database::NOT_NULL, Database::NO_ACTION, Database::NULL, Database::POSTGRES_DEFAULT_RE, Database::PRIMARY_KEY, Database::RESTRICT, Database::SET_DEFAULT, Database::SET_NULL, 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 inherited from Database

#default_schema, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #transaction_isolation_level

Instance Method Summary collapse

Methods included from DatabaseMethods

#create_sequence, #create_trigger, #database_type, #drop_sequence, #table_exists?, #tables, #view_exists?, #views

Methods inherited from Database

#<<, #[], adapter_class, adapter_scheme, #adapter_scheme, #add_column, #add_index, #add_servers, #alter_table, #call, #cast_type_literal, connect, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_view, #database_type, #disconnect, #drop_column, #drop_index, #drop_table, #drop_view, #dump_indexes_migration, #dump_schema_migration, #dump_table_schema, #each_server, #execute_ddl, #execute_dui, #execute_insert, #fetch, #from, #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=, #indexes, #initialize, #inspect, #literal, #log_info, #log_yield, #logger=, #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, single_threaded=, #single_threaded?, #supports_prepared_transactions?, #supports_savepoints?, #supports_transaction_isolation_levels?, #synchronize, #table_exists?, #tables, #test_connection, #transaction, #typecast_value, #uri, #url

Methods included from Metaprogramming

#meta_def

Constructor Details

This class inherits a constructor from Sequel::Database

Instance Method Details

#connect(server) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 16

def connect(server)
  opts = server_opts(server)
  if opts[:database]
    dbname = opts[:host] ? \
      "//#{opts[:host]}#{":#{opts[:port]}" if opts[:port]}/#{opts[:database]}" : opts[:database]
  else
    dbname = opts[:host]
  end
  conn = OCI8.new(opts[:user], opts[:password], dbname, opts[:privilege])
  conn.autocommit = true
  conn.non_blocking = true
  
  # The ruby-oci8 gem which retrieves oracle columns with a type of
  # DATE, TIMESTAMP, TIMESTAMP WITH TIME ZONE is complex based on the
  # ruby version (1.9.2 or later) and Oracle version (9 or later)
  # In the now standard case of 1.9.2 and Oracle 9 or later, the timezone
  # is determined by the Oracle session timezone. Thus if the user
  # requests Sequel provide UTC timezone to the application,
  # we need to alter the session timezone to be UTC
  if Sequel.application_timezone == :utc
    conn.exec("ALTER SESSION SET TIME_ZONE='-00:00'")
  end
  
  conn
end

#dataset(opts = nil) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 42

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

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



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# File 'lib/sequel/adapters/oracle.rb', line 74

def execute(sql, opts={})
  synchronize(opts[:server]) do |conn|
    begin
      r = log_yield(sql){conn.exec(sql)}
      yield(r) if block_given?
      r
    rescue OCIException => e
      raise_error(e, :disconnect=>CONNECTION_ERROR_CODES.include?(e.code))
    end
  end
end

#schema_parse_table(table, opts = {}) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 46

def schema_parse_table(table, opts={})
  ds = dataset
  ds.identifier_output_method = :downcase
  schema_and_table = "#{"#{quote_identifier(opts[:schema])}." if opts[:schema]}#{quote_identifier(table)}"
  table_schema = []
  metadata = transaction(opts){|conn| conn.describe_table(schema_and_table)}
  metadata.columns.each do |column|
    table_schema << [
      column.name.downcase.to_sym,
      {
        :type => column.data_type,
        :db_type => column.type_string.split(' ')[0],
        :type_string => column.type_string,
        :charset_form => column.charset_form,
        :char_used => column.char_used?,
        :char_size => column.char_size,
        :data_size => column.data_size,
        :precision => column.precision,
        :scale => column.scale,
        :fsprecision => column.fsprecision,
        :lfprecision => column.lfprecision,
        :allow_null => column.nullable?
      }
    ]
  end
  table_schema
end