Skip to main content

First thoughts on working with JHipster

I'm working through a sample application with JHipster, and so far, I like it.  The approach and instructions seem straight forward, and the ability to generate domain objects and associated code using jdl is nice.  I've also looked at generating the domain objects for different kinds of databases, and the results are intriguing.  When generating code for mysql (a relational database), we see lombok doing a lot of work to generate boilerplate.  This is not the case if we generate code for mongo (a document-oriented no-sql database).  For mongo, JHipster manually generates getters, setters, equals, hashcode, and even some other builder-type methods.  The important thing here for me is not so much the use of various tools, but more the basic fact that the resulting generated code is fundamentally different.

I tend to work in Windows most of the time, and this has become a problem for trying to run databases and other useful tools/images in docker.  I have Windows 10, but not the Pro edition (maybe I should just spring for it?), and docker does not work unless you have the Pro edition.  I've noticed that there is now built-in access to bash for windows, so I am considering that as an option for trying to get docker installed on Windows.  Until then, I'm running all of my docker images on my mbp, and I'm just connecting the dev deployed Windows builds to the databases running on the mbp to keep going so that I don't get bogged down.

JHipster generates application.yml files (both dev and prod!) for spring boot, and IntelliJ easily finds and helps auto-complete changes to the spring.data.mongodb properties necessary to connect to the docker images on my mbp, which is very nice.

Comments

Popular posts from this blog

JHipster, Liquibase, MySQL, and initializing data, including booleans!

When generating a data model from JHipster JDL, we will often declare entities with Boolean fields.  I have so far abandoned H2 as a database because of liquibase issues, and both my dev and production databases will be MySQL.  This is relevant to the Boolean field desire there is a long history in software development of how to store Boolean data types in a SQL database whose standards classically do not support Boolean. In the current JHipster/Liquibase incarnation, tables in MySQL are generated for us, which is really nice.  The Boolean data types are stored as BIT  (1).  This is not a problem so far -- most developers seem to agree now that as a best practice, we should store values in databases as false = 0 and true = 1, and a BIT(1) is a great, simple way to do that. An issue arises when we try to use liquibase to set/update our database to the desired starting state.  For my project, I've chosen gradle instead of maven as a build tool, and gradle has a plugin for liquiba

Deploying Spring Boot talking to MySQL on AWS

In a recent post, I listed some very basic information about running a MySQL database on AWS.  In most cases, we don't want a database alone; we want an application that uses that database for CRUD. I've created a simple Spring Boot application that exposes a REST API to create and manage lists of things.  The list values are all stored in a MySQL database. When I went to deploy the application on AWS using Elastic Beanstalk, there were some really good, automatic things that happened to make my life easy: AWS can deploy a Spring Boot jar very easily by simply uploading the jar during setup. AWS creates security groups on the fly so I don't have to worry about extra security configuration. AWS automatically generates DNS information and provides me a URL for accessing the application. As I deployed the application and saw all of these things, I was pretty excited.  It is nice to have a lot of this stuff taken care of for me. Then, I tried to test my applica

Spring Security - Authority vs Role

I have spent a lot of time recently trying to understand the difference between Authority and Role in Spring Security.  This is a brief review of what I found. When creating a UserDetailsService or overriding configure(AuthenticationManagerBuilder auth) in the security config class that extends WebSecurityConfigurerAdapter, I basically get complete control over what I populate inside of the UserDetails that is used/returned.  This is important because the UserDetails interface really only cares about how to return one thing: Collection<? extends GrantedAuthority> getAuthorities(); A GrantedAuthority just seems like a glorified String wrapper that names some thing.  The question is... what is that thing? This is where the subtle difference between Authority and Role comes into play. I think that Role is an older thought/construct that automatically gets plugged into Authority if we just create a user with a Role.  But completely forget about the code and classes for a mi