LIGHT

  • News
  • Docs
  • Community
  • Reddit
  • GitHub

Common

This module contains events shared between command side and query side. Also it has a utility class to generate UUID which will be used as key for events.

The Utils.java is very simple and it is included just to ensure that the common is self-contained without too many dependencies.

package com.networknt.tram.todolist.common;


import java.util.UUID;

public class Utils {
  public static String generateUniqueString() {
    return UUID.randomUUID().toString();
  }
}

The following are three domain events class that implement DomainEvent interface.

TodoCreated.java

package com.networknt.tram.todolist.common;


import com.networknt.tram.event.common.DomainEvent;

public class TodoCreated implements DomainEvent {

  private String title;

  private boolean completed;

  private int executionOrder;

  public TodoCreated() {
  }

  public TodoCreated(String title, boolean completed, int executionOrder) {
    this.title = title;
    this.completed = completed;
    this.executionOrder = executionOrder;
  }

  public String getTitle() {
    return title;
  }

  public void setTitle(String title) {
    this.title = title;
  }

  public boolean isCompleted() {
    return completed;
  }

  public void setCompleted(boolean completed) {
    this.completed = completed;
  }

  public int getExecutionOrder() {
    return executionOrder;
  }

  public void setExecutionOrder(int executionOrder) {
    this.executionOrder = executionOrder;
  }
}

TodoDeleted.java

package com.networknt.tram.todolist.common;


import com.networknt.tram.event.common.DomainEvent;

public class TodoDeleted implements DomainEvent {
}

TodoUpdated.java

package com.networknt.tram.todolist.common;


import com.networknt.tram.event.common.DomainEvent;

public class TodoUpdated implements DomainEvent {

  private String title;

  private boolean completed;

  private int executionOrder;

  public TodoUpdated() {
  }

  public TodoUpdated(String title, boolean completed, int executionOrder) {
    this.title = title;
    this.completed = completed;
    this.executionOrder = executionOrder;
  }

  public String getTitle() {
    return title;
  }

  public void setTitle(String title) {
    this.title = title;
  }

  public boolean isCompleted() {
    return completed;
  }

  public void setCompleted(boolean completed) {
    this.completed = completed;
  }

  public int getExecutionOrder() {
    return executionOrder;
  }

  public void setExecutionOrder(int executionOrder) {
    this.executionOrder = executionOrder;
  }
}

As you can see these are just POJO and DomainEvent doesn’t have any method but just and identifier.

The next step, we are going to walk through command side common components.

  • About Light
    • Overview
    • Testimonials
    • What is Light
    • Features
    • Principles
    • Benefits
    • Roadmap
    • Community
    • Articles
    • Videos
    • License
    • Why Light Platform
  • Getting Started
    • Get Started Overview
    • Environment
    • Light Codegen Tool
    • Light Rest 4j
    • Light Tram 4j
    • Light Graphql 4j
    • Light Hybrid 4j
    • Light Eventuate 4j
    • Light Oauth2
    • Light Portal Service
    • Light Proxy Server
    • Light Router Server
    • Light Config Server
    • Light Saga 4j
    • Light Session 4j
    • Webserver
    • Websocket
    • Spring Boot Servlet
  • Architecture
    • Architecture Overview
    • API Category
    • API Gateway
    • Architecture Patterns
    • CQRS
    • Eco System
    • Event Sourcing
    • Fail Fast vs Fail Slow
    • Integration Patterns
    • JavaEE declining
    • Key Distribution
    • Microservices Architecture
    • Microservices Monitoring
    • Microservices Security
    • Microservices Traceability
    • Modular Monolith
    • Platform Ecosystem
    • Plugin Architecture
    • Scalability and Performance
    • Serverless
    • Service Collaboration
    • Service Mesh
    • SOA
    • Spring is bloated
    • Stages of API Adoption
    • Transaction Management
    • Microservices Cross-cutting Concerns Options
    • Service Mesh Plus
    • Service Discovery
  • Design
    • Design Overview
    • Design First vs Code First
    • Desgin Pattern
    • Service Evolution
    • Consumer Contract and Consumer Driven Contract
    • Handling Partial Failure
    • Idempotency
    • Server Life Cycle
    • Environment Segregation
    • Database
    • Decomposition Patterns
    • Http2
    • Test Driven
    • Multi-Tenancy
    • Why check token expiration
    • WebServices to Microservices
  • Cross-Cutting Concerns
    • Concerns Overview
  • API Styles
    • Light-4j for absolute performance
    • Style Overview
    • Distributed session on IMDG
    • Hybrid Serverless Modularized Monolithic
    • Kafka - Event Sourcing and CQRS
    • REST - Representational state transfer
    • Web Server with Light
    • Websocket with Light
    • Spring Boot Integration
    • Single Page Application
    • GraphQL - A query language for your API
    • Light IBM MQ
    • Light AWS Lambda
    • Chaos Monkey
  • Infrastructure Services
    • Service Overview
    • Light Proxy
    • Light Mesh
    • Light Router
    • Light Portal
    • Messaging Infrastructure
    • Centralized Logging
    • COVID-19
    • Light OAuth2
    • Metrics and Alerts
    • Config Server
    • Tokenization
    • Light Controller
  • Tool Chain
    • Tool Chain Overview
  • Utility Library
  • Service Consumer
    • Service Consumer
  • Development
    • Development Overview
  • Deployment
    • Deployment Overview
    • Frontend Backend
    • Linux Service
    • Windows Service
    • Install Eventuate on Windows
    • Secure API
    • Client vs light-router
    • Memory Limit
    • Deploy to Kubernetes
  • Benchmark
    • Benchmark Overview
  • Tutorial
    • Tutorial Overview
  • Troubleshooting
    • Troubleshoot
  • FAQ
    • FAQ Overview
  • Milestones
  • Contribute
    • Contribute to Light
    • Development
    • Documentation
    • Example
    • Tutorial
“Common” was last updated: July 5, 2021: fixes #275 checked and corrected grammar/spelling for majority of pages (#276) (b3bbb7b)
Improve this page
  • News
  • Docs
  • Community
  • Reddit
  • GitHub
  • About Light
  • Getting Started
  • Architecture
  • Design
  • Cross-Cutting Concerns
  • API Styles
  • Infrastructure Services
  • Tool Chain
  • Utility Library
  • Service Consumer
  • Development
  • Deployment
  • Benchmark
  • Tutorial
  • Troubleshooting
  • FAQ
  • Milestones
  • Contribute