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git.stella-ops.org/docs/workflow/tutorials/03-decisions/README.md
master f5b5f24d95 Add StellaOps.Workflow engine: 14 libraries, WebService, 8 test projects 
Extract product-agnostic workflow engine from Ablera.Serdica.Workflow into
standalone StellaOps.Workflow.* libraries targeting net10.0.

Libraries (14):
- Contracts, Abstractions (compiler, decompiler, expression runtime)
- Engine (execution, signaling, scheduling, projections, hosted services)
- ElkSharp (generic graph layout algorithm)
- Renderer.ElkSharp, Renderer.ElkJs, Renderer.Msagl, Renderer.Svg
- Signaling.Redis, Signaling.OracleAq
- DataStore.MongoDB, DataStore.PostgreSQL, DataStore.Oracle

WebService: ASP.NET Core Minimal API with 22 endpoints

Tests (8 projects, 109 tests pass):
- Engine.Tests (105 pass), WebService.Tests (4 E2E pass)
- Renderer.Tests, DataStore.MongoDB/Oracle/PostgreSQL.Tests
- Signaling.Redis.Tests, IntegrationTests.Shared

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-20 19:14:44 +02:00

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Tutorial 3: Decisions

Branch workflow logic based on conditions — state values, payload answers, or complex expressions.

Concepts Introduced

  • .WhenExpression() — branch on any boolean expression
  • .WhenStateFlag() — shorthand for checking a boolean state value
  • .WhenPayloadEquals() — shorthand for checking a task completion payload value
  • Nested decisions — decisions inside decisions for complex routing

Decision Types

Method Use When
WhenExpression Complex conditions (comparisons, boolean logic, function calls)
WhenStateFlag Checking a boolean state key against true/false
WhenPayloadEquals Checking a task completion answer (inside OnComplete)

Variants

Next

Tutorial 4: Human Tasks — approve/reject patterns with OnComplete flows.