Business Process & Integration Diagram Generator

Quick Start: Choose diagram type → Declare stencil icons for events/gateways/tasks → Group into pools/lanes → Connect with arrow syntax → Wrap in ```plantuml fence.

⚠️ IMPORTANT: Always use ```plantuml or ```puml code fence. NEVER use ```text — it will NOT render as a diagram.

Critical Rules

• Every diagram starts with @startuml and ends with @enduml
• Use left to right direction for process flows (start→end reads left-to-right)
• Use mxgraph.bpmn.* for BPMN events, gateways, and task markers
• Use mxgraph.eip.* for Enterprise Integration Pattern icons
• Use mxgraph.lean_mapping.* for Value Stream Mapping symbols
• Default colors are applied automatically — you do NOT need to specify fillColor or strokeColor
• Use rectangle "Pool" { ... } for BPMN pools and lanes
• Sequence flows use -->, message flows use ..> (dashed)

Full stencil reference: See stencils/README.md for 9500+ available icons.

Mxgraph Stencil Syntax

mxgraph.<library>.<icon> "Label" as <alias>

BPMN Stencil Family (mxgraph.bpmn.*)

Events — Circle shapes for process triggers and outcomes:

Icon	Meaning
mxgraph.bpmn.event.start	Start Event
mxgraph.bpmn.event.end	End Event
mxgraph.bpmn.event.terminateEnd	Terminate End
mxgraph.bpmn.event.timerStart	Timer Start
mxgraph.bpmn.event.timerCatching	Timer Intermediate
mxgraph.bpmn.event.messageStart	Message Start
mxgraph.bpmn.event.messageCatching	Message Catching
mxgraph.bpmn.event.messageEnd	Message End
mxgraph.bpmn.event.errorEnd	Error End
mxgraph.bpmn.event.errorBound	Error Boundary
mxgraph.bpmn.event.signalStart	Signal Start
mxgraph.bpmn.event.signalEnd	Signal End

Gateways — Diamond shapes for branching/merging:

Icon	Meaning
mxgraph.bpmn.gateway2.exclusive	Exclusive Gateway (XOR)
mxgraph.bpmn.gateway2.parallel	Parallel Gateway (AND)
mxgraph.bpmn.gateway2.inclusive	Inclusive Gateway (OR)
mxgraph.bpmn.gateway2.complex	Complex Gateway

Tasks — Use rectangle for tasks, stencil markers for typed tasks:

Icon	Meaning
mxgraph.bpmn.user_task	User Task
mxgraph.bpmn.service_task	Service Task
mxgraph.bpmn.script_task	Script Task
mxgraph.bpmn.manual_task	Manual Task
mxgraph.bpmn.business_rule_task	Business Rule Task

Data — Document-like shapes:

Icon	Meaning
mxgraph.bpmn.data2.dataObject	Data Object
mxgraph.bpmn.data2.dataInput	Data Input
mxgraph.bpmn.data2.dataOutput	Data Output

EIP Stencil Family (mxgraph.eip.*)

Icon	Meaning
mxgraph.eip.messageChannel	Message Channel
mxgraph.eip.deadLetterChannel	Dead Letter Channel
mxgraph.eip.content_based_router	Content-Based Router
mxgraph.eip.message_filter	Message Filter
mxgraph.eip.splitter	Splitter
mxgraph.eip.aggregator	Aggregator
mxgraph.eip.message_translator	Message Translator
mxgraph.eip.content_enricher	Content Enricher
mxgraph.eip.messaging_gateway	Messaging Gateway
mxgraph.eip.channel_adapter	Channel Adapter
mxgraph.eip.messaging_bridge	Messaging Bridge
mxgraph.eip.recipient_list	Recipient List
mxgraph.eip.wire_tap	Wire Tap
mxgraph.eip.event_driven_consumer	Event-Driven Consumer
mxgraph.eip.competing_consumers	Competing Consumers
mxgraph.eip.process_manager	Process Manager

Lean Mapping Stencil Family (mxgraph.lean_mapping.*)

Icon	Meaning
mxgraph.lean_mapping.outside_sources	Supplier / Customer
mxgraph.lean_mapping.manufacturing_process	Process Step
mxgraph.lean_mapping.supermarket	Supermarket (Inventory Buffer)
mxgraph.lean_mapping.fifo_lane	FIFO Lane
mxgraph.lean_mapping.production_kanban	Production Kanban
mxgraph.lean_mapping.withdrawal_kanban	Withdrawal Kanban
mxgraph.lean_mapping.signal_kanban	Signal Kanban
mxgraph.lean_mapping.truck_shipment	Truck Shipment
mxgraph.lean_mapping.operator	Operator
mxgraph.lean_mapping.inventory_box	Inventory
mxgraph.lean_mapping.kaizen_lightening_burst	Kaizen Burst
mxgraph.lean_mapping.mrp_erp	MRP / ERP System
mxgraph.lean_mapping.warehouse	Warehouse
mxgraph.lean_mapping.push_arrow	Push Arrow
mxgraph.lean_mapping.timeline2	Timeline

Connection Types

Syntax	Meaning	Use Case
A --> B	Solid arrow	Sequence flow (task→task)
A ..> B	Dashed arrow	Message flow (cross-pool) / async trigger
A --> B : "label"	Labeled solid	Conditional flow (gateway branch)
A ..> B : "label"	Labeled dashed	Named message / signal

Quick Example

@startuml
left to right direction

mxgraph.bpmn.event.start "Start" as start
rectangle "Review\nRequest" as review
mxgraph.bpmn.gateway2.exclusive "Approved?" as gw
rectangle "Process\nOrder" as process
rectangle "Notify\nRejection" as reject
mxgraph.bpmn.event.end "End" as end_ok
mxgraph.bpmn.event.end "End" as end_fail

start --> review
review --> gw
gw --> process : "Yes"
gw --> reject : "No"
process --> end_ok
reject --> end_fail
@enduml

Diagram Types

Type	Purpose	Key Stencils	Example
Order Processing	E-commerce / fulfillment	mxgraph.bpmn.event.*, mxgraph.bpmn.gateway2.*	order-processing.md
Approval Workflow	Multi-level approval	mxgraph.bpmn.event.*, mxgraph.bpmn.gateway2.*	approval-workflow.md
EIP Messaging	Message routing & transformation	mxgraph.eip.*	eip-messaging.md
ETL Pipeline	Data extraction & loading	mxgraph.bpmn.event.*, mxgraph.eip.*	etl-pipeline.md
Value Stream	Lean manufacturing flow	mxgraph.lean_mapping.*	value-stream.md
Microservice Orchestration	Service choreography	mxgraph.bpmn.event.*, mxgraph.eip.*	microservice-orchestration.md
Event-Driven Architecture	Pub/Sub event flows	mxgraph.bpmn.event.*, mxgraph.eip.*	event-driven.md
Customer Service	Support ticket lifecycle	mxgraph.bpmn.event.*, mxgraph.bpmn.gateway2.*	customer-service.md