Class: Google::Cloud::Spanner::V1::TransactionOptions::ReadWrite

Inherits:
Object
  • Object
show all
Extended by:
Protobuf::MessageExts::ClassMethods
Includes:
Protobuf::MessageExts
Defined in:
proto_docs/google/spanner/v1/transaction.rb

Overview

Message type to initiate a read-write transaction. Currently this transaction type has no options.

Defined Under Namespace

Modules: ReadLockMode

Instance Attribute Summary collapse

Instance Attribute Details

#read_lock_mode ⇒ ::Google::Cloud::Spanner::V1::TransactionOptions::ReadWrite::ReadLockMode

Returns Read lock mode for the transaction.

Returns:



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# File 'proto_docs/google/spanner/v1/transaction.rb', line 394

class ReadWrite
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # `ReadLockMode` is used to set the read lock mode for read-write
  # transactions.
  module ReadLockMode
    # Default value.
    #
    # If the value is not specified, the pessimistic read lock is used.
    READ_LOCK_MODE_UNSPECIFIED = 0

    # Pessimistic lock mode.
    #
    # Read locks are acquired immediately on read.
    PESSIMISTIC = 1

    # Optimistic lock mode.
    #
    # Locks for reads within the transaction are not acquired on read.
    # Instead the locks are acquired on a commit to validate that
    # read/queried data has not changed since the transaction started.
    OPTIMISTIC = 2
  end
end