Class Ruote::FlowExpressionId
In: lib/ruote/fei.rb
Parent: Object

The FlowExpressionId (fei for short) is an process expression identifier. Each expression when instantiated gets a unique fei.

Feis are also used in workitems, where the fei is the fei of the

participant
expression that emitted the workitem.

Feis can thus indicate the position of a workitem in a process tree.

Feis contain four pieces of information :

  • wfid : workflow instance id, the identifier for the process instance
  • sub_wfid : the identifier for the sub process within the main instance
  • expid : the expression id, where in the process tree
  • engine_id : only relevant in multi engine scenarii (defaults to ‘engine’)

Methods

==   child_id   child_id   direct_child?   engine_id   eql?   expid   extract   extract_h   from_id   hash   is_a_fei?   new   sub_wfid   to_h   to_storage_id   to_storage_id   wfid  

Constants

CHILD_SEP = '_'

Attributes

h  [R] 

Public Class methods

child_id(h)

Returns child_id… For an expid of ‘0_1_4’, this will be 4.

extract(arg)

Attempts at extracting a FlowExpressionId from the given argument (workitem, string, …)

Uses .extract_h

extract_h(arg)

Attempts at extracting a FlowExpressionId (as a Hash instance) from the given argument (workitem, string, …)

from_id(s, engine_id='engine')

Turns the result of to_storage_id back to a FlowExpressionId instance.

is_a_fei?(h)

Returns true if the h is a representation of a FlowExpressionId instance.

Public Instance methods

child_id()

Returns the last number in the expid. For instance, if the expid is ‘0_5_7’, the child_id will be ‘7’.

eql?(other)

Alias for #==

[Validate]