1. JDK 8 (9 & 10 are not supported)
  2. Install Maven (or use the project Maven wrapper mvnw)
  3. Git clone or download mojito source code to ${PROJECT_DIR}

You can also use docker to setup the build environment.


mvn clean install -DskipTests=true

Setup npm

It is advised to reuse the npm version that was downloaded during mojito’s build.

source webapp/

Else, make sure the global npm is compatible.

Run mojito

cd ${PROJECT_DIR}/webapp
npm run start-dev

mojito should be running on http://localhost:8080/login. You can login with admin/ChangeMe.

mojito is running with in-memory HSQL DB. When you restart mojito, all data is reset. You can configure mojito to run with MySQL. See Database Configuration for more information.

Add Demo Data in mojito

Make sure mojito is up and running.

cd ${PROJECT_DIR}/webapp
npm run create-demo-data

This creates Demo repository in mojito with 21 languages. 17 languages are fully translated. A Demo directory is created in ${Project_DIR} with source file.

Run Unit Tests

mvn test

DB migration

DB migration is done with Flyway, and Default DB setup with MySql. The default app configuration uses HSQL hence Flyway is disabled.

When using MySql Flyway must be turned on with flyway.enabled=true (for dev or in production).

Clean the DB

Set the properties l10n.flyway.clean=true to have Flyway clean the schema first and then recreate it from the migration files. This will allow during development to do have a similar behavior as spring.jpa.hibernate.ddl-auto=create.

When working on Jpa entities

  • Set spring.jpa.hibernate.ddl-auto=update so that Hibernate will update the DB schema as you keep doing changes
  • Flyway is be used to create or just update the schema depending if the flag was set to clean the DB (l10n.flyway.clean)

To Generate the final migration script before committing code

  • Set l10n.flyway.clean=true, Flyway will drop the database and recreate the previous version
  • Set spring.jpa.hibernate.ddl-auto=none so that Hibernate won’t perform any change on the DB schema
  • Run DDLGenerator to generate the baseline schema to update the database.
  • The generated code in: target/db/migration/Vx__yy_zz.sql must be adapted (eg. if renaming a column, hibernate will add one, so the statements must be changed)
  • Move the update file to: src/main/resources/db/migration, rename the file (x is the version, yy_zz to provide a description: yy zz)
  • Test the migration script

Docker image

The aurambaj/mojito-dev docker image comes with Java, Maven and some other build dependencies required to build the project easily.

Build reusing host Maven repository (Recommanded):

docker run -v $(pwd):/mnt/mojito -v ~/.m2:/root/.m2 -it aurambaj/mojito-dev mvn install -DskipTests

Or start the container and run build commands in it

docker run -v $(pwd):/mnt/mojito -v ~/.m2:/root/.m2 -p 8080:8080 -it aurambaj/mojito-dev bash

# and then build commands
mvn install -DskipTests
cd webapp/
npm run start-dev

To build from a clean slate:

docker run -v $(pwd):/mnt/mojito -it aurambaj/mojito-dev mvn install -DskipTests


Check Java version

Make sure you have Java 8 installed:

[11:05:13] ~/code/mojito (fix_add_text_unit_plural) $ java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

Check Maven version

Maven 3.5+ should work fine. Consider trying the Maven wrapper mvnw from the project if you have any issue with Maven or don’t want to install it.

If you have multiple version of Java installed, make sure Maven uses the right version (forth line):

[01:21:31] ~ $ mvn -version
Apache Maven 3.5.2 (138edd61fd100ec658bfa2d307c43b76940a5d7d; 2017-10-18T00:58:13-07:00)
Maven home: /usr/local/Cellar/maven/3.5.2/libexec
Java version: 1.8.0_121, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_121.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.13.5", arch: "x86_64", family: "mac"

Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/ValidationException

If you see an error like:

Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/ValidationException

you most likely have a wrong version of Java. Java 8 is required. See Check Java version