More fun with Groovy and Reflection API

By Shawn Hartsock (author)

Originally published November 7, 2008.

Republished from Thoughts and Ideas. The original writing is preserved; topic and concept suggestions are generated metadata, not part of the original article.

This time in a TagLib I need to see all the properties of a domain class but I don’t want to look at anything that isn’t sent to hibernate.

import java.lang.reflect.Modifier

static getFields(obj) {

      def names = []

      def fields = obj.getClass().declaredFields

      fields.each({ field ->

       if(!field.synthetic)

        if(!Modifier.isStatic(field.modifiers))

         if(!Modifier.isTransient(field.modifiers)) {

          names.add(field.name.toString())

                                 }

      })

      return names

    }

… in another method I’ll filter out the Closures by checking against Closure.class and the property’s class.

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