Grails binddata in service - grails

Question

Is there a way to utilize bindData in a service other than using the deprecated BindDynamicMethod? I can't just use
TestObject testObject = new TestObject()
TestObject testObject.properties = params
or
TestObject testObject = new TestObject(params)
because I have a custom bind method utilizing the #BindUsing annotation within my TestObject class.

Answer 1

If you are using Grails 3.* then the service class can implement DataBinder trait and implement bindData() as shown below example:
import grails.web.databinding.DataBinder
class SampleService implements DataBinder {
def serviceMethod(params) {
Test test = new Test()
bindData(test, params)
test
}
class Test {
String name
Integer age
}
}
This is how I quickly tried that in grails console:
grailsApplication.mainContext.getBean('sampleService').serviceMethod(name: 'abc', age: 10)

Answer 2

In Grails 2.4.4 you can do something like this:
// grails-app/services/demo/HelperService.groovy
package demo
import org.grails.databinding.SimpleMapDataBindingSource
class HelperService {
def grailsWebDataBinder
TestObject getNewTestObject(Map args) {
def obj = new TestObject()
grailsWebDataBinder.bind obj, args as SimpleMapDataBindingSource
obj
}
}

Answer 3

In 2.5, I found that emulating the behaviour of the Controller API in a helper service worked:
def bindData(def domainClass, def bindingSource, String filter) {
return bindData(domainClass, bindingSource, Collections.EMPTY_MAP, filter)
}
def bindData(def domainClass, def bindingSource, Map includeExclude, String filter) {
DataBindingUtils
.bindObjectToInstance(
domainClass,
bindingSource,
convertToListIfString(includeExclude.get('include')),
convertToListIfString(includeExclude.get('exclude')),
filter);
return domainClass;
}
convertToListIfString is as per the controller method:
#SuppressWarnings("unchecked")
private List convertToListIfString(Object o) {
if (o instanceof CharSequence) {
List list = new ArrayList();
list.add(o instanceof String ? o : o.toString());
o = list;
}
return (List) o;
}