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crandas.transactions

Transaction implementation.

Transaction(*, session=None, dummy_for=False, name=None, add_nonce=False, _keep=None, **execute_args)

Transaction context manager

When used as a context manager (i.e., in a with Transaction(): block), causes all commands in the context to be executed at the server as a single unit.

Start a transaction.

Takes command options and execution options.

Command options are applied to the commands of the transaction as specified below. Execution options are applied to the transaction as a whole. See Query Arguments for more information.

Command options

The following command options are supported for a transaction:

  • Deprecated

    name (str, default: None) - If given, applied to final command of transaction (deprecated use obj.save(name=...) instead)

  • Deprecated

    dummy_for (str, optional) - If given, applied to final command of transaction (deprecated use obj.save(name=...) instead)
  • add_nonce (bool, default: False) - If given, applied to all commands of transaction

show_transaction_graph(t, outfile)

Generates a transaction graph

PARAMETER DESCRIPTION
t

the Transaction to be graphed

TYPE: Transaction

outfile

name of the output file

TYPE: str