Integrate MySQL with Roo
This quickstart guide will help you to integrate your Roo application with MySQL service on App42 PaaS.
Kontena – Kontena is a lightweight container that will run your apps and services in an isolated and secured manner. You can specify the power of the Kontena while setting up infra or creating services. One Kontena power specifies to 256 MB Memory and 128 MHz CPU.
Service – Services in the App42 PaaS are add-on components which are needed in an App. App42 PaaS supports multiple services like SQL databases, NoSQL databases and more.
To get going with App42 PaaS, below are few prerequisites that will allow you to use AppHQ – App42 PaaS Management Console as well as Command Line Client.
$ mkdir sampleRoo && cd sampleRoo
$ roo
____ ____ ____
/ __ \/ __ \/ __ \
/ /_/ / / / / / / /
/ _, _/ /_/ / /_/ /
/_/ |_|\____/\____/ 1.2.3.RELEASE [rev 7fd62b6]
Welcome to Spring Roo. For assistance press TAB or type "hint" then hit ENTER.
0 upgrades available (plus 35 upgrades not visible due to your version stability setting of RELEASE)
// create a topLevel package first
roo> project --topLevelPackage com.test
Created ROOT\pom.xml
0 upgrades available (plus 35 upgrades not visible due to your version stability setting of RELEASE)
Created SRC_MAIN_RESOURCES
Created SRC_MAIN_RESOURCES\log4j.properties
Created SPRING_CONFIG_ROOT
Created SPRING_CONFIG_ROOT\applicationContext.xml
// setup roo-mysql
roo> persistence setup --provider HIBERNATE --database MYSQL
Created SPRING_CONFIG_ROOT\database.properties
Please update your database details in src/main/resources/META-INF/spring/database.properties.
Updated SPRING_CONFIG_ROOT\applicationContext.xml
Created SRC_MAIN_RESOURCES\META-INF\persistence.xml
Updated ROOT\pom.xml [added dependencies mysql:mysql-connector-java:5.1.18, org.hibernate:hibernate-core
:4.1.8.Final, org.hibernate:hibernate-entitymanager:4.1.8.Final, org.hibernate.javax.persistence:hiberna
te-jpa-2.0-api:1.0.1.Final, commons-collections:commons-collections:3.2.1, org.hibernate:hibernate-valid
ator:4.3.1.Final, javax.validation:validation-api:1.0.0.GA, cglib:cglib-nodep:2.2.2, javax.transaction:j
ta:1.1, org.springframework:spring-jdbc:${spring.version}, org.springframework:spring-orm:${spring.versi
on}, commons-pool:commons-pool:1.5.6, commons-dbcp:commons-dbcp:1.3]
// now you will be able to use mysql in your application
Once you have setup the Java environment and created the MySQL service, You need to configure the MySQL credentials in your created Roo application.
database.driverClassName=com.mysql.jdbc.Driver database.url=jdbc:mysql://host:port/dbName database.username=username database.password=password // host = service_host // port = service_port // dbName = service_database_name // username = service_username // password = service_password
You can also use our Sample Apps and extend it to suit your needs. Here is the link to Roo-MySQL Sample App
After doing all the modifications to your App, you need to update it on App42 PaaS to get the changes affected in your App running on App42 PaaS platform.