Package org.conscrypt.metrics

Class OptionalMethod

  • @Internal
public final class OptionalMethod
extends java.lang.Object
    Helper class to handle reflexive loading and invocation of methods which may be absent.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.lang.reflect.Method cachedMethod  

    • Constructor Summary

      Constructors 
      Constructor Description
      OptionalMethod​(java.lang.Class<?> clazz, java.lang.String methodName, java.lang.Class<?>... methodParams)
      Instantiates a new OptionalMethod.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private static <T> T checkNotNull​(T reference)  
      private static java.lang.reflect.Method initializeMethod​(java.lang.Class<?> clazz, java.lang.String methodName, java.lang.Class<?>... methodParams)  
      java.lang.Object invoke​(java.lang.Object target, java.lang.Object... args)  
      java.lang.Object invokeStatic​(java.lang.Object... args)  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • cachedMethod

        private final java.lang.reflect.Method cachedMethod

    • Constructor Detail

      • OptionalMethod

        public OptionalMethod​(java.lang.Class<?> clazz,
                      java.lang.String methodName,
                      java.lang.Class<?>... methodParams)
        Instantiates a new OptionalMethod.

        Does not throw any exceptions if the class or method can't be loaded, or if any parameter classes are null and instead behaves as a no-op, always returning null.

        Parameters:
        clazz - the Class to search for methods on
        methodName - the name of the Method on clazz
        methodParams - list of Classes of the Method's parameters
        Throws:
        java.lang.NullPointerException - if the method name is null

    • Method Detail

      • initializeMethod

        private static java.lang.reflect.Method initializeMethod​(java.lang.Class<?> clazz,
                                                         java.lang.String methodName,
                                                         java.lang.Class<?>... methodParams)

      • invokeStatic

        public java.lang.Object invokeStatic​(java.lang.Object... args)

      • invoke

        public java.lang.Object invoke​(java.lang.Object target,
                               java.lang.Object... args)

      • checkNotNull

        private static <T> T checkNotNull​(T reference)