com.viaversion.viarewind.legacysupport.util

Class ReflectionUtil

java.lang.Object

com.viaversion.viarewind.legacysupport.util.ReflectionUtil

public class ReflectionUtil
extends java.lang.Object

Common reflection utilities for Java 8 and newer.

Constructor Summary

Constructors

Constructor and Description
ReflectionUtil()

Method Summary

Modifier and Type	Method and Description
static java.lang.Class<?>	failSafeGetClass(java.lang.String name)
static java.lang.reflect.Field	failSafeGetField(java.lang.Class<?> clazz, java.lang.String fieldName) Get a field from a class, and print an error message if it fails.
static void	failSafeSetValue(java.lang.Class<?> clazz, java.lang.Object object, java.lang.String name, java.lang.Object value) Set a field value, and print an error message if it fails.
static java.lang.reflect.Method	findMethod(java.lang.Class<?> clazz, java.lang.String[] methodNames, java.lang.Class<?>... parameterTypes)
static java.lang.reflect.Field	getFieldAccessible(java.lang.Class<?> clazz, java.lang.String fieldName) Gets and field from the fieldCache or directly and makes it accessible.
static java.lang.reflect.Field	getFieldAndCache(java.lang.Class<?> clazz, java.lang.String fieldName)
static java.lang.reflect.Method	getMethod(java.lang.Class<?> clazz, java.lang.String methodName, java.lang.Class<?>... parameterTypes) Recursively search for a method in the class and its superclasses.
static void	removeFinal(java.lang.reflect.Field field) Remove the final modifier from a field.
static void	setValue(java.lang.Class<?> clazz, java.lang.Object object, java.lang.String name, java.lang.Object value) Unsafe wrapper for value setting which bypasses final checks.
static void	setValue(java.lang.Class<?> clazz, java.lang.Object object, java.lang.String name, java.lang.Object value, boolean isFinal)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtil

public ReflectionUtil()

Method Detail

findMethod

public static java.lang.reflect.Method findMethod(java.lang.Class<?> clazz,
                                                  java.lang.String[] methodNames,
                                                  java.lang.Class<?>... parameterTypes)

getMethod

public static java.lang.reflect.Method getMethod(java.lang.Class<?> clazz,
                                                 java.lang.String methodName,
                                                 java.lang.Class<?>... parameterTypes)

Recursively search for a method in the class and its superclasses. Returns null if the method is not found.

Parameters:

clazz - The class to search in

methodName - The name of the method

parameterTypes - The parameter types of the method

Returns:

The method if found, otherwise null

getFieldAndCache

public static java.lang.reflect.Field getFieldAndCache(java.lang.Class<?> clazz,
                                                       java.lang.String fieldName)

getFieldAccessible

public static java.lang.reflect.Field getFieldAccessible(java.lang.Class<?> clazz,
                                                         java.lang.String fieldName)

Gets and field from the fieldCache or directly and makes it accessible.

Parameters:

clazz - The class

fieldName - The field name

Returns:

The field

failSafeGetField

public static java.lang.reflect.Field failSafeGetField(java.lang.Class<?> clazz,
                                                       java.lang.String fieldName)

Get a field from a class, and print an error message if it fails.

Parameters:

clazz - The class

fieldName - The field name

Returns:

The field, or null if it fails

setValue

public static void setValue(java.lang.Class<?> clazz,
                            java.lang.Object object,
                            java.lang.String name,
                            java.lang.Object value,
                            boolean isFinal)
                     throws java.lang.IllegalAccessException

Throws:

java.lang.IllegalAccessException

removeFinal

public static void removeFinal(java.lang.reflect.Field field)

Remove the final modifier from a field.

Parameters:

field - The field

setValue

public static void setValue(java.lang.Class<?> clazz,
                            java.lang.Object object,
                            java.lang.String name,
                            java.lang.Object value)
                     throws java.lang.IllegalAccessException

Unsafe wrapper for value setting which bypasses final checks.

Parameters:

clazz - The class

object - The object

name - The field name

value - The value

Throws:

java.lang.IllegalAccessException - If the field cannot be accessed

failSafeSetValue

public static void failSafeSetValue(java.lang.Class<?> clazz,
                                    java.lang.Object object,
                                    java.lang.String name,
                                    java.lang.Object value)

Set a field value, and print an error message if it fails.

Parameters:

clazz - The class

object - The object

name - The field name

value - The value

failSafeGetClass

public static java.lang.Class<?> failSafeGetClass(java.lang.String name)