Sample Grails Domain Class

BuildConfig.groovy

grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.war.file = "target/${appName}-${appVersion}.war"
grails.project.dependency.resolution = {
    // inherit Grails' default dependencies
    inherits("global") {
        // uncomment to disable ehcache
        // excludes 'ehcache'
    }
    log "warn" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
    repositories {
        grailsPlugins()
        grailsHome()
        grailsCentral()

        // uncomment the below to enable remote dependency resolution
        // from public Maven repositories
        mavenLocal()
        mavenCentral()
        mavenRepo "http://snapshots.repository.codehaus.org"
        mavenRepo "http://repository.codehaus.org"
        mavenRepo "http://download.java.net/maven/2/"
        mavenRepo "http://repository.jboss.com/maven2/"
    }
    dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes eg.

        runtime(
			[group:'mysql', name:'mysql-connector-java', version:'5.1.16']
		)
		test(
			[group:'org.mockito', name:'mockito-all', version:'1.8.5'],
			[group:'org.hamcrest', name:'hamcrest-all', version:'1.1']
		)
    }
}

Usuario.groovy

package miapp

class Usuario {

    String nombre
    String email

    static constraints = {
    }
}