Origin Financial Backend Assessment

This is a Spring Boot Conversion of my past repo solution to origin financial's backend take home assignment.

The backend works with this frontend.

Screenshots

Built With

• Java 17
• Spring Boot 3.1
• VS Code

How to Use

The Express application runs by default on http://localhost:4000 and has the following endpoints:

• http://localhost:4000/api/score - post endpoint that expects the form object below

Expected Payload JSON

{
  "personal": {
    "age": 35,
    "income": 0,
    "marital_status": "married"
  },
  "house": {
    "ownership_status": "owned",
    "dependents": 2
  },
  "vehicle": {
    "year": 2018
  },
  "questions": {
    "question1": "false",
    "question2": "true",
    "question3": "false"
  }
}

Running the Spring Boot Application

git clone https://github.com/jdegand/origin-spring-boot-backend.git

# need java jdk installed 

# cd into directory & run directly with maven or open in ide - click run button

Running the Angular Application

Run the backend application first.

git clone https://github.com/jdegand/origin-angular-frontend.git

# cd into the directory
npm install 

npm start

Thoughts

• Have to add @Valid in ApplicantData because properties are nested
• The only standard annotations which can be applied to enum's are @NotNull and @Null.
• Adding custom validation for question to ensure question answers are only 'true' or 'false' requires an implementation similar to this
• Don't think using an entity makes sense since data is not saved to a database
• Using DTO vs entity - not much practical difference - although I think it was a bigger issue in the past
• Didn't add setters to DTOs - necessary for more complicated testing logic ?
• I gitignored the maven-wrapper.jar - debatable if it should be ignored or not - The mvnw / mvnw.cmd scripts will download a maven wrapper if it is missing

Improvements

• Code Coverage plugin
• More tests
• Custom Validator for questions
• Error route

Useful Resources

• Official Apache Maven documentation
• Spring Boot Maven Plugin Reference Guide
• Create an OCI image
• Spring Web
• Building a RESTful Web Service - spring guide
• Serving Web Content with Spring MVC - spring guide
• Building REST services with Spring - spring guide
• VS Code Docs - java vscode
• JSON 2 CSHARP - json to pojo
• YouTube - Spring Boot Complete Tutorial - Master Class
• Github - Springboot Tutorial Repo for Spring Boot Complete Tutorial - Master Class video
• Stack Overflow - DTO or entity?
• Spring Framework Guru - requestbody annotation
• YouTube - Coding Challenge #1 - RESTful Calculator with Java Spring Boot
• Stack Overflow - return an object from a post method with spring boot
• Stack Overflow - spring boot mapping between entity and database not working
• Stack Overflow - validate requestbody
• YouTube - Spring boot Post Method Example with JSON and Postman
• Stack Overflow - option for generating getters and setters on vscode
• VS Code - java refactoring
• How to Do in Java - controller getMapping / postMapping
• YouTube - RESTful Web Service with Spring Boot - Consume and Produce JSON or XML
• Java Guides - dto validation example
• Stack Overflow - lambda to filter a boolean array
• Stack Overflow - most elegant way to check if all values in a boolean array are true
• Spring Docs - validation
• YouTube - Spring Boot | REST API Request Validation & Exception Handling Realtime Example | JavaTechie
• Stack Overflow - change spring boot dashboard project name in vscode
• Stack Overflow - validation not working with dto objects
• Stack Overflow - spring validator class does not validate the dto data
• Stack Overflow - validation nested models
• Baeldung - javax validations enums
• Stack Overflow - java string validation using enum values and annotation
• Stack Overflow - how to validate enum in dto
• YouTube - Spring Boot - Creating Custom Annotation For Validation | InterviewQA | JavaTechie
• YouTube - 13. Spring Boot | Working with enum | @Enumerated
• Stack Overflow - requestbody valid custom error message
• Fun of Programming Blog - java enum validator
• Spring Docs - rest service cors
• Stack Overflow - custom validator on java list type
• Sololean - compiler playground java
• Free Formatter - escape json
• Stack Overflow - mockMvc contentType is undefined in result action
• Medium - setting up unit testing for java in vs code with maven
• Stack Overflow - maven gitignore
• Stack Overflow - should i gitignore mvn folder in a spring boot project
• Gist - java gitignore
• Github - gitignore maven