DSLFixes.scala

package org.pinky.code.extension.guice;



import com.google.inject.Key
import com.google.inject.servlet._


import javax.servlet.http.{HttpServletResponse, HttpServletRequest, HttpServlet}

/**
 *  Holds implicit definitions to hide the calls to `with`.
 *  Import this object into the scope in which you need to do
 *  <code>serve("*.rss").with(classOf[ExampleRssServlet])</code>
 *  and do
 *  <code>serve("*.rss").by(classOf[ExampleRssServlet])</code>
 *  or
 *  <code>serve("*.rss").withClass(classOf[ExampleRssServlet])</code>
 *  instead.
 *
 *   This are the methods we will hide
 *   <code>
 *   public static interface ServletKeyBindingBuilder {
 *       void with(Class<? extends HttpServlet> servletKey);
 *       void with(Key<? extends HttpServlet> servletKey);
 *       void with(Class<? extends HttpServlet> servletKey, Map<String, String> contextParams);
 *       void with(Key<? extends HttpServlet> servletKey, Map<String, String> contextParams);
 *   }
 *   </code>
 *
 * @author fede silva gmail com {fedesilva}
 *
 */
object DSLFixes {

    /**
     * The rich type.
     * @author fede silva gmail com {fedesilva}
     */
    class RichBuilder( builder: ServletModule.ServletKeyBindingBuilder ){

        def by[T <: HttpServlet]( servletKey: Class[T] ){ builder.`with`(servletKey) };

        def by[T <: HttpServlet](
            servletKey: Class[T], params: java.util.Map[String, String] ) { builder.`with`(servletKey, params) };


        def by[T <: HttpServlet]( servletKey: Key[T] ){ builder.`with`(servletKey) };

        def by[T <: HttpServlet, S](
            servletKey: Key[T],
            params: java.util.Map[String, String] ){ builder.`with`(servletKey, params) };


        def withClass[T <: HttpServlet]( servletKey: Class[T] ){
            builder.`with`(servletKey)
        };

        def withClass[T <: HttpServlet](
            servletKey: Class[T],
            params: java.util.Map[String, String] ){ builder.`with`(servletKey, params) };

        def withClass[T <: HttpServlet]( servletKey: Key[T] ){
            builder.`with`(servletKey)
        };

        def withClass[T <: HttpServlet](
            servletKey: Key[T],
            params: java.util.Map[String, String] ){ builder.`with`(servletKey, params) };

    }

    /**
     * The implicit type conversion.
     * @author fede silva gmail com {fedesilva}
     */
    implicit def builderToRichBuilder(
        builder: ServletModule.ServletKeyBindingBuilder ) = new RichBuilder(builder);

    

}

ExampleListener.scala

package org.pinky.code.example


import com.google.inject.servlet.ServletModule
import extension._
import extension.controlstructure._
import com.google.inject.servlet.{ServletModule, GuiceServletContextListener}
import com.google.inject.{AbstractModule, Guice, Injector, Module}
import servlets.{ExampleFilter, ExampleRssServlet, ExampleServlet}

/**
 * Listener example which demonstrates how to configure guice managed filters, servlets and other components the "pinky way"
 *
 * @author peter hausel gmail com (Peter Hausel)
 *
 */

class ExampleListener extends PinkyServletContextListener
{

    //Imports the DSL fixes.
    import org.pinky.code.extension.guice.DSLFixes._

    modules = Array(
      new RepresentationModule(),
      new ServletModule(){
        filter("/hello/*").through(classOf[ExampleFilter])
        serve("*.rss").by(classOf[ExampleRssServlet])
        serve("/hello/*").by(classOf[ExampleServlet])
      }
  )

}