MagnusSmith’s gists

MagnusSmith / ShapesVisit.java

Created January 5, 2025 16:53

Shapes Sum Type with Visitor Patten

	import java.util.List;

	// Visitor interface
	interface ShapeVisitor<T> {
	T visit(Circle circle);
	T visit(Rectangle rectangle);
	T visit(Triangle triangle);
	T visit(Pentagon pentagon);
	}

MagnusSmith / Shapes.java

Last active February 1, 2025 16:38

Example Sum Type with Pattern Matching

	import java.util.List;

	sealed interface Shape permits Circle, Rectangle, Triangle, Pentagon {}

	record Circle(double radius) implements Shape {}
	record Rectangle(double width, double height) implements Shape {}
	record Triangle(double side1, double side2, double side3) implements Shape {}
	record Pentagon(double side) implements Shape {}

MagnusSmith / wordwrap.scala

Last active December 12, 2015 12:06

wordwrap in scala

	import scala.annotation.tailrec

	val sentence = "Four score and ten years ago our fathers brought forth upon this " +
	"continent a new nation conceived in liberty and dedicated to the " +
	"proposition that all men are created equal"

	def wrap(source: String, len: Int):String = {

	val wordChunks = sentence.split(" ").flatMap(x => x.grouped(len)).toList

MagnusSmith / Application.java

Last active March 25, 2022 00:38

Java configuration for Spring with Axon Framework 2.09

	package config;

	import orders.commandhandling.Order;
	import orders.commandhandling.OrderCommandHandler;
	import org.axonframework.commandhandling.CommandBus;
	import org.axonframework.commandhandling.SimpleCommandBus;
	import org.axonframework.commandhandling.annotation.AnnotationCommandHandlerBeanPostProcessor;
	import org.axonframework.commandhandling.gateway.CommandGatewayFactoryBean;
	import org.axonframework.eventhandling.EventBus;
	import org.axonframework.eventhandling.SimpleEventBus;

MagnusSmith / JpaRepository Example

Last active December 19, 2015 18:39

Starting with a simple entity UserAccount If you create an interface for a repository like below then Spring Data will create a proxy for you to inject into your service. It will automatically give you save, find, findAll, findOne, count methods for free (ie you don't have to do any implementation code). Since the UserAccount entity has a usern…

	//JPA enitiy called UserAccount
	@Entity
	public class UserAccount {
	@Id
	private Long id;
	private String username;
	......
	}

MagnusSmith / ThirdParty.scala

Created January 22, 2013 13:23

My first attempt to use slick with play framework shows a slick table defined using a case class and a few helper methods to create, find, update and delete records

	package models

	import scala.slick.driver.H2Driver.simple._
	import scala.slick.session.Session

	/**
	* Created with IntelliJ IDEA.
	* User: Magnus.Smith
	* Date: 21/01/13
	* Time: 16:20

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