Package akka.util

Class Reflect$


  • public class Reflect$
    extends java.lang.Object
    Collection of internal reflection utilities which may or may not be available (most services specific to HotSpot, but fails gracefully).

    INTERNAL API

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static Reflect$ MODULE$
      Static reference to the singleton instance of this Scala object.
    • Constructor Summary

      Constructors 
      Constructor Description
      Reflect$()  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.ClassLoader findClassLoader()
      INTERNAL API
      <T> java.lang.reflect.Constructor<T> findConstructor​(java.lang.Class<T> clazz, scala.collection.immutable.Seq<java.lang.Object> args)
      INTERNAL API Implements a primitive form of overload resolution a.k.a.
      java.lang.reflect.Type findMarker​(java.lang.Class<?> root, java.lang.Class<?> marker)  
      scala.Option<scala.Function1<java.lang.Object,​java.lang.Class<?>>> getCallerClass()
      This optionally holds a function which looks N levels above itself on the call stack and returns the Class[_] object for the code executing in that stack frame.
      <T> T instantiate​(java.lang.Class<T> clazz)
      INTERNAL API
      <T> T instantiate​(java.lang.Class<T> clazz, scala.collection.immutable.Seq<java.lang.Object> args)
      INTERNAL API Calls findConstructor and invokes it with the given arguments.
      <T> T instantiate​(java.lang.reflect.Constructor<T> constructor, scala.collection.immutable.Seq<java.lang.Object> args)
      INTERNAL API Invokes the constructor with the given arguments.
      <T> scala.Function0<T> instantiator​(java.lang.Class<T> clazz)
      INTERNAL API
      protected boolean lookupAndSetField​(java.lang.Class<?> clazz, java.lang.Object instance, java.lang.String name, java.lang.Object value)
      INTERNAL API Set a val inside a class.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • MODULE$

        public static final Reflect$ MODULE$
        Static reference to the singleton instance of this Scala object.
    • Constructor Detail

      • Reflect$

        public Reflect$()
    • Method Detail

      • getCallerClass

        public scala.Option<scala.Function1<java.lang.Object,​java.lang.Class<?>>> getCallerClass()
        This optionally holds a function which looks N levels above itself on the call stack and returns the Class[_] object for the code executing in that stack frame. Implemented using sun.reflect.Reflection.getCallerClass if available, None otherwise.

        Hint: when comparing to Thread.currentThread.getStackTrace, add two levels.

        Returns:
        (undocumented)
      • instantiate

        public <T> T instantiate​(java.lang.Class<T> clazz)
        INTERNAL API
        Parameters:
        clazz - the class which to instantiate an instance of
        Returns:
        a new instance from the default constructor of the given class
      • instantiate

        public <T> T instantiate​(java.lang.Class<T> clazz,
                                 scala.collection.immutable.Seq<java.lang.Object> args)
        INTERNAL API Calls findConstructor and invokes it with the given arguments.
        Parameters:
        clazz - (undocumented)
        args - (undocumented)
        Returns:
        (undocumented)
      • instantiate

        public <T> T instantiate​(java.lang.reflect.Constructor<T> constructor,
                                 scala.collection.immutable.Seq<java.lang.Object> args)
        INTERNAL API Invokes the constructor with the given arguments.
        Parameters:
        constructor - (undocumented)
        args - (undocumented)
        Returns:
        (undocumented)
      • findConstructor

        public <T> java.lang.reflect.Constructor<T> findConstructor​(java.lang.Class<T> clazz,
                                                                    scala.collection.immutable.Seq<java.lang.Object> args)
        INTERNAL API Implements a primitive form of overload resolution a.k.a. finding the right constructor.
        Parameters:
        clazz - (undocumented)
        args - (undocumented)
        Returns:
        (undocumented)
      • instantiator

        public <T> scala.Function0<T> instantiator​(java.lang.Class<T> clazz)
        INTERNAL API
        Parameters:
        clazz - the class which to instantiate an instance of
        Returns:
        a function which when applied will create a new instance from the default constructor of the given class
      • findMarker

        public java.lang.reflect.Type findMarker​(java.lang.Class<?> root,
                                                 java.lang.Class<?> marker)
      • lookupAndSetField

        protected final boolean lookupAndSetField​(java.lang.Class<?> clazz,
                                                  java.lang.Object instance,
                                                  java.lang.String name,
                                                  java.lang.Object value)
        INTERNAL API Set a val inside a class.
        Parameters:
        clazz - (undocumented)
        instance - (undocumented)
        name - (undocumented)
        value - (undocumented)
        Returns:
        (undocumented)
      • findClassLoader

        public java.lang.ClassLoader findClassLoader()
        INTERNAL API
        Returns:
        (undocumented)