de.bild.codec

Class ReflectionHelper

java.lang.Object

de.bild.codec.ReflectionHelper

public abstract class ReflectionHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
ReflectionHelper()

Method Summary

Modifier and Type	Method and Description
static Map<String,Type>	calculateInferredTypeParameters(Class clazz, Type[] actualTypeParameters) Calculates the map of inferred type parameters for the given class based upon the given array of known type parameters from the class hierarchy
static Class	extractRawClass(Type type)
static Type	findInterface(Type type, Class interfaceToFind) Example: static class ValueClass {} static class SomeOtherClass<V extends ValueClass> extends ArrayList<V> implements List<V> {} static class SomeSpecializedList extends SomeOtherClass<ValueClass> {}
static List<FieldTypePair>	getDeclaredAndInheritedFieldTypePairs(Type type, boolean returnFinalFields) calculates all fields of class hierarchy
static List<MethodTypePair>	getDeclaredAndInheritedMethods(Type type)
static FieldTypePair	getIdFieldIfPresent(Class clazz)
static FieldTypePair	getLockingVersionFieldIfPresent(Class clazz)
static Type	inferRealType(Type type, Map<String,Type> realTypeMap)

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionHelper

public ReflectionHelper()

Method Detail

getDeclaredAndInheritedFieldTypePairs

public static List<FieldTypePair> getDeclaredAndInheritedFieldTypePairs(Type type,
                                                                        boolean returnFinalFields)

calculates all fields of class hierarchy

Parameters:

type - the value type

returnFinalFields - indicate if final fields should be retuned as well

Returns:

all declared and all inherited declared fields of given type

calculateInferredTypeParameters

public static Map<String,Type> calculateInferredTypeParameters(Class clazz,
                                                               Type[] actualTypeParameters)

Calculates the map of inferred type parameters for the given class based upon the given array of known type parameters from the class hierarchy

Parameters:

clazz - the class to work on

actualTypeParameters - array of type parameters

Returns:

a Map of inferred types, that maps type variable names to real types

inferRealType

public static Type inferRealType(Type type,
                                 Map<String,Type> realTypeMap)

getDeclaredAndInheritedMethods

public static List<MethodTypePair> getDeclaredAndInheritedMethods(Type type)

getIdFieldIfPresent

public static FieldTypePair getIdFieldIfPresent(Class clazz)

getLockingVersionFieldIfPresent

public static FieldTypePair getLockingVersionFieldIfPresent(Class clazz)

findInterface

public static Type findInterface(Type type,
                                 Class interfaceToFind)

Example:

 
      static class ValueClass {}
      static class SomeOtherClass<V extends ValueClass> extends ArrayList<V> implements List<V> {}
      static class SomeSpecializedList extends SomeOtherClass<ValueClass> {}
  
 

Parameters:

type - e.g. SomeSpecializedList

interfaceToFind - example List.class

Returns:

the parameterized interface, e.g. List<ValueClass>

extractRawClass

public static Class extractRawClass(Type type)

Parameters:

type - type to be examined

Returns:

The raw class of the given type or if type is a class, the class itself will be returned