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Moira Documentation

Branching Pattern

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Purpose

Section titled “Purpose”

Route workflow execution to different paths based on user choice, collected data, or computed conditions.

Structure

Section titled “Structure”
[get-choice] → [route] → choice=A → [path-a] → [merge]
                      → choice=B → [path-b] → [merge]

Implementation

Section titled “Implementation”

Choice Collection

Section titled “Choice Collection”
{
  "type": "agent-directive",
  "id": "get-action",
  "directive": "Ask user: create new or edit existing?",
  "inputSchema": {
    "type": "object",
    "properties": {
      "action": { "type": "string", "enum": ["create", "edit"] }
    },
    "required": ["action"]
  },
  "connections": { "success": "route-action" }
}

Simple Binary Route

Section titled “Simple Binary Route”
{
  "type": "condition",
  "id": "route-action",
  "condition": {
    "operator": "eq",
    "left": { "contextPath": "action" },
    "right": "create"
  },
  "connections": {
    "true": "create-workflow",
    "false": "edit-workflow"
  }
}

Multi-Way Branching

Section titled “Multi-Way Branching”

For more than 2 options, chain conditions:

{
  "id": "check-create",
  "type": "condition",
  "condition": {
    "operator": "eq",
    "left": { "contextPath": "action" },
    "right": "create"
  },
  "connections": {
    "true": "create-branch",
    "false": "check-edit"
  }
}
{
  "id": "check-edit",
  "type": "condition",
  "condition": {
    "operator": "eq",
    "left": { "contextPath": "action" },
    "right": "edit"
  },
  "connections": {
    "true": "edit-branch",
    "false": "delete-branch"
  }
}

Branching by Boolean Flag

Section titled “Branching by Boolean Flag”
{
  "type": "condition",
  "id": "check-has-tests",
  "condition": {
    "operator": "eq",
    "left": { "contextPath": "has_tests" },
    "right": "yes"
  },
  "connections": {
    "true": "run-tests",
    "false": "skip-tests"
  }
}

Branching by Numeric Value

Section titled “Branching by Numeric Value”
{
  "type": "condition",
  "id": "check-error-count",
  "condition": {
    "operator": "gt",
    "left": { "contextPath": "error_count" },
    "right": 0
  },
  "connections": {
    "true": "fix-errors",
    "false": "proceed"
  }
}

Complex Conditions

Section titled “Complex Conditions”

Combine multiple checks:

{
  "condition": {
    "operator": "and",
    "conditions": [
      {
        "operator": "eq",
        "left": { "contextPath": "status" },
        "right": "ready"
      },
      {
        "operator": "gt",
        "left": { "contextPath": "items_count" },
        "right": 0
      }
    ]
  }
}

Merging Branches

Section titled “Merging Branches”

Branches typically converge at a common node:

[create-branch] → [save-workflow]
[edit-branch]   → [save-workflow]

Both paths connect to the same target node.

Section titled “Related Patterns”