CMMN Reference Guide

Complete technical specification for CMMN implementation in SEA™.

CMMN Primitives

Case

• Type: Aggregate Root
• Lifecycle: Created → Active → Completed/Terminated/Suspended
• Attributes: id, desired_outcome, owner, members, stages, status

Stage

• Type: Entity
• Modes: Sequential, parallel, optional
• Attributes: id, entry_sentry, exit_sentry, tasks, status

Task

• Type: Entity
• Modes: Mandatory, discretionary
• Attributes: id, type, assignee, status, dependencies

Sentry

• Type: Policy
• Modes: Entry, exit
• Evaluation: Boolean expression (AND/OR logic)

Milestone

• Type: Value Object
• Purpose: Progress tracking, decision gating
• Attributes: id, condition, achieved

CaseFile

• Type: Value Object
• Contents: Artifact collection with lineage
• Attributes: id, artifacts[], metadata

SEA™ DSL Mappings

@namespace "system.casemanagement"

Entity "Case" in system.casemanagement
@rationale "CMMN-style collaborative container"

Entity "Stage" in system.casemanagement
@rationale "Phase with entry/exit criteria"

Entity "Task" in system.casemanagement
@rationale "Unit of work (mandatory/discretionary)"

Policy "SentryEvaluation" per Constraint Obligation priority 10
as: forall s in entities where s.type = "Stage":
    (s.entry_sentry.satisfied = true) implies (s.status = "Active")

State Transitions

Case States

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Created → Active → {Completed | Terminated | Suspended}

Stage States

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Available → Active → {Completed | Terminated}

Task States

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Available → Active → {Completed | Failed | Terminated}

Implementation Patterns

Discretionary Task Activation

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task:
  type: discretionary
  activation_sentry:
    conditions: [...]
    evaluated_by: pm_agent
    on_satisfied: activate_and_assign

Parallel Stages

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case:
  stages:
    - id: stage-a
      parallel_group: 1
    - id: stage-b
      parallel_group: 1
  # Both activate simultaneously

Last Updated: January 2026