Class: Sequel::Oracle::Database

Inherits:
Database
  • Object
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-02396: exceeded maximum idle time, please connect again ORA-03113: end-of-file on communication channel ORA-03114: not connected to ORACLE ORA-03135: connection lost contact

[ 28, 1012, 2396, 3113, 3114, 3135 ].freeze
ORACLE_TYPES = 
{
  :blob=>lambda{|b| Sequel::SQL::Blob.new(b.read)},
  :clob=>:read.to_proc
}.freeze

Constants included from DatabaseMethods

Sequel::Oracle::DatabaseMethods::IGNORE_OWNERS

Instance Attribute Summary collapse

Attributes included from DatabaseMethods

#autosequence

Instance Method Summary collapse

Methods included from DatabaseMethods

#create_sequence, #create_trigger, #current_user, #database_type, #drop_sequence, #foreign_key_list, #global_index_namespace?, #server_version, #supports_deferrable_constraints?, #supports_transaction_isolation_levels?, #tables, #view_exists?, #views

Instance Attribute Details

#conversion_procs ⇒ Object (readonly)

Hash of conversion procs for this database.



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# File 'lib/sequel/adapters/oracle.rb', line 26

def conversion_procs
  @conversion_procs
end

Instance Method Details

#connect(server) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 28

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])
  if prefetch_rows = opts.fetch(:prefetch_rows, 100)
    conn.prefetch_rows = typecast_value_integer(prefetch_rows)
  end
  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 and Oracle version (9 or later)
  # In the now standard case of 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
  
  class << conn
    attr_reader :prepared_statements
  end
  conn.instance_variable_set(:@prepared_statements, {})
  
  conn
end

#disconnect_connection(c) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 62

def disconnect_connection(c)
  c.logoff
rescue OCIException
  nil
end

#execute(sql, opts = OPTS, &block) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 68

def execute(sql, opts=OPTS, &block)
  _execute(nil, sql, opts, &block)
end

#execute_insert(sql, opts = OPTS) ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 72

def execute_insert(sql, opts=OPTS)
  _execute(:insert, sql, opts)
end

#freeze ⇒ Object 



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# File 'lib/sequel/adapters/oracle.rb', line 76

def freeze
  @conversion_procs.freeze
  super
end