slice-builder

name	slice-builder
description	Transform slice definitions from config.json into executable Java code

Slice Builder - Master Skill

Overview

Transform slice definitions from config.json into Java code following CQRS/Event Sourcing patterns with Axon Framework.

Input: config.json

{
  "slices": [
    {
      "title": "slice: <Name>",
      "context": "<BoundedContext>",
      "sliceType": "STATE_CHANGE|STATE_VIEW|UNDEFINED",
      "commands": [...],
      "events": [...],
      "readmodels": [...],
      "processors": [...],
      "specifications": [...]
    }
  ]
}

Slice Type Selection

sliceType	Skill	Generates
STATE_CHANGE	state-change-slice	Commands, Events, Aggregate, REST Controller (POST), Tests
STATE_VIEW	state-view-slice	ReadModel, Projector, Query, QueryHandler, REST Controller (GET), Migration, Tests
UNDEFINED	Skip	-

If slice contains processors with type: "AUTOMATION", also apply automation-slice.

Package Structure

de.eventmodelers/
├── common/                          # Shared interfaces
├── domain/                          # Aggregates and Commands
│   ├── <Aggregate>Aggregate.java
│   └── commands/
│       └── <CommandName>Command.java
├── events/                          # All events (shared)
└── <context>/
    ├── ProcessingGroups.java
    └── slices/<slicename>/          # All slice artifacts
        ├── Controller
        ├── ReadModel, Query (STATE_VIEW)
        └── internal/ (Projector, QueryHandler, Processor)

File Locations

Type	Location
Commands	domain/commands/<CommandName>Command.java
Events	events/<EventName>Event.java
Aggregates	domain/<Aggregate>Aggregate.java
Slice artifacts	<context>/slices/<slicename>/
Internal (Projector, QueryHandler, Processor)	<context>/slices/<slicename>/internal/
Migrations	resources/db/migration/
Tests	test/<context>/slices/<slicename>/

Field Type Mapping

config.json Type	Java Type
UUID	UUID
String	String
Date	LocalDate
Integer	Integer
Boolean	Boolean
Decimal	BigDecimal
Multiple cardinality	List
optional: true	@Nullable T

Name Transformations

Slice Title	Class Name	Package Name
"Register Customer"	RegisterCustomer	registercustomer
"Customer Registered"	CustomerRegistered	customerregistered

Rules:

1. Remove "slice: " prefix
2. PascalCase for class names
3. Lowercase no separators for package names
4. Append suffix: Command, Event, ReadModel, Processor