joox.groovy

/**
 * Simple Xml validation using the joox library.
 */

@Grapes(
        @Grab(group = 'org.jooq', module = 'joox', version = '1.4.0')
)
import static org.joox.JOOX.*

def document = $(new File('instance-xs11.xml'))
def match = $(document).namespace('ch', 'http://choice.egal').xpath('//ch:Ort[string-length() < 3]')
if (match.empty) {
    println('Erfolg!')
} else {
    println('Ort muss mindestens 3 Zeichen haben.')
}