Package ru.vyarus.dropwizard.guice.module.installer.util

Class FeatureUtils

  • public final class FeatureUtils
extends java.lang.Object
    Utility methods to simplify checks for feature installers.
    Since:
    01.09.2014

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.reflect.Method findMethod​(java.lang.Class<?> type, java.lang.String name, java.lang.Class<java.lang.Object>... args)  
      static <T extends java.lang.annotation.Annotation>
      java.lang.annotation.Annotation      		 getAnnotatedAnnotation​(java.lang.Class<?> type, java.lang.Class<T> annotation)  
      static <T extends java.lang.annotation.Annotation>
      T      		 getAnnotation​(java.lang.Class<?> type, java.lang.Class<T> annotation)  
      static java.lang.String getInstallerExtName​(java.lang.Class<? extends FeatureInstaller> installer)
      Utility call to prettify logs.
      static <T> java.lang.Class<T> getInstanceClass​(T object)
      Used to get correct object type even if it's guice proxy.
      static boolean hasAnnotatedAnnotation​(java.lang.Class<?> type, java.lang.Class<? extends java.lang.annotation.Annotation> annotation)  
      static boolean hasAnnotation​(java.lang.Class<?> type, java.lang.Class<? extends java.lang.annotation.Annotation> annotation)  
      static <T> T invokeMethod​(java.lang.reflect.Method method, java.lang.Object instance, java.lang.Object... args)  
      static boolean is​(java.lang.Class<?> type, java.lang.Class<?> required)  

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • hasAnnotation

        public static boolean hasAnnotation​(java.lang.Class<?> type,
                                    java.lang.Class<? extends java.lang.annotation.Annotation> annotation)
        Parameters:
        type - type to check
        annotation - annotation to find
        Returns:
        true if annotation found on class or super class and type is not abstract, false otherwise

      • hasAnnotatedAnnotation

        public static boolean hasAnnotatedAnnotation​(java.lang.Class<?> type,
                                             java.lang.Class<? extends java.lang.annotation.Annotation> annotation)
        Parameters:
        type - type to check
        annotation - annotation to find
        Returns:
        true if annotation found on one of class or super class annotations and type is not abstract, false otherwise

      • getAnnotation

        public static <T extends java.lang.annotation.Annotation> T getAnnotation​(java.lang.Class<?> type,
                                                                          java.lang.Class<T> annotation)
        Type Parameters:
        T - annotation type
        Parameters:
        type - type to examine
        annotation - annotation to search
        Returns:
        found annotation or null

      • getAnnotatedAnnotation

        public static <T extends java.lang.annotation.Annotation> java.lang.annotation.Annotation getAnnotatedAnnotation​(java.lang.Class<?> type,
                                                                                                                 java.lang.Class<T> annotation)
        Type Parameters:
        T - annotation type
        Parameters:
        type - type to examine
        annotation - annotation which must be found on target annotation
        Returns:
        annotation annotated with provided annotation type or null if not found

      • is

        public static boolean is​(java.lang.Class<?> type,
                         java.lang.Class<?> required)
        Parameters:
        type - type to check
        required - required marker superclass or interface
        Returns:
        if type implements interface or extends required type and type is not abstract

      • getInstallerExtName

        public static java.lang.String getInstallerExtName​(java.lang.Class<? extends FeatureInstaller> installer)
        Utility call to prettify logs.
        Parameters:
        installer - installer class
        Returns:
        installer name to use in logs

      • findMethod

        @SafeVarargs
public static java.lang.reflect.Method findMethod​(java.lang.Class<?> type,
                                                  java.lang.String name,
                                                  java.lang.Class<java.lang.Object>... args)
        Parameters:
        type - examining type
        name - method name
        args - method argument types
        Returns:
        found method

      • invokeMethod

        public static <T> T invokeMethod​(java.lang.reflect.Method method,
                                 java.lang.Object instance,
                                 java.lang.Object... args)
        Type Parameters:
        T - expected type of execution result
        Parameters:
        method - method to call
        instance - object instance to call method on
        args - optional arguments
        Returns:
        method execution result

      • getInstanceClass

        public static <T> java.lang.Class<T> getInstanceClass​(T object)
        Used to get correct object type even if it's guice proxy.
        Type Parameters:
        T - object type
        Parameters:
        object - object to get class of
        Returns:
        object class