Download the Castor Core and Castor XML jars from here and put them in the lib
directory (there's probably a better way to manage this dependency using Grails' dependency management, but this one's a quick and dirty).
With Castor introspection mode you don't need to worry about creating mapping files if your XML matches up nicely with your domains. Here's an example:
grails-app/domain/MyDomain.groovy
class MyDomain {
String foo
String bar
}
grails-app/controllers/MyController.groovy
import org.exolab.castor.xml.Unmarshaller
import java.io.ByteArrayInputStream
class MyController {
def myAction = {
def xml = '''
<myDomain>
<foo>My Foo String</foo>
<bar>My Bar String</bar>
</myDomain>
'''
def reader = new ByteArrayInputStream(xml.bytes).newReader()
def domain = (MyDomain)Unmarshaller.unmarshal(MyDomain.class, reader)
domain.save()
def count = MyDomain.countByFoo('My Foo String')
render "Found $count results"
}
}
Navigate to localhost:8080/appname/my/myAction
and it should display "Found N results", N > 0.