simple jaxb source generation with gradle

build.gradle

apply plugin:'idea'
apply plugin:'groovy'

repositories{
    jcenter()
}

configurations{
    jaxb
}

dependencies{
    compile "org.codehaus.groovy:groovy-all:2.3.7"

    jaxb 'com.sun.xml.bind:jaxb-xjc:2.2.7-b41'
    jaxb 'com.sun.xml.bind:jaxb-impl:2.2.7-b41'
    jaxb 'javax.xml.bind:jaxb-api:2.2.7'
}

task generateJaxb {

    ext.destDir = new File(buildDir, 'generated')
    ext.inputDir = new File(projectDir, 'src/xsd')

    outputs.dir(destDir)
    inputs.dir(inputDir)

    doLast{
        destDir.mkdirs()
        ant.taskdef(name: 'xjc', classname:"com.sun.tools.xjc.XJCTask",  classpath: configurations.jaxb.asPath)
        ant.xjc(destdir: destDir.absolutePath, package: 'org.acme.demo.model.generated') {
            schema(dir:inputDir.absolutePath, includes: '*.xsd')
        }
    }
}

sourceSets {
    main {
        groovy{
            srcDir generateJaxb.destDir
        }
    }
}

ideaModule.dependsOn generateJaxb