org.batoo.common.reflect

Class ReflectHelper

java.lang.Object

org.batoo.common.reflect.ReflectHelper

public class ReflectHelper
extends Object

Since:

2.0.1

Author:

hceylan

Constructor Summary

Constructors

Constructor and Description
ReflectHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static Number	convertNumber(Number value, Class<?> numberType) Converts the number into number Type
static ConstructorAccessor	createConstructor(Constructor<?> constructor) Creates and returns a fast constructor accessor.
static String	createMemberName(Member member) Returns the qualified name for the member.
static AbstractAccessor	getAccessor(Member javaMember) Returns the accessor for the member
static <T> Class<T>	getActualType(Class<?> clazz, String attributeName, Class<?> originalType) Returns the actual type of the attribute, resolving generic types if necessary.
static <A extends Annotation> A	getAnnotation(Member member, Class<A> annotation) Returns the annotation instance if the member has the annotation.
static <X> Class<X>	getGenericType(Member member, int index) Returns the actual generic type of a class's type parameter of the member.
static Class<?>	getMemberType(Member member) Returns the type class of the member.
static PropertyDescriptor[]	getProperties(Class<?> clazz) Returns the property descriptors for the class.
static boolean	isCollection(Class<?> type) Returns if the type is a collection type.
static void	setAccessible(Member member, boolean accessible) Sets the member's accessibility status.
static void	warnAnnotations(BLogger logger, Member member, Set<Class<? extends Annotation>> annotations) Logs warnings for annotations that were ignored.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectHelper

public ReflectHelper()

Method Detail

convertNumber

public static Number convertNumber(Number value,
                   Class<?> numberType)

Converts the number into number Type

Parameters:

value - the number value

numberType - the number type

Returns:

the converted number value

Since:

2.0.1

createConstructor

public static ConstructorAccessor createConstructor(Constructor<?> constructor)

Creates and returns a fast constructor accessor.

Parameters:

constructor - the original constructor

Returns:

the constructor accessor

Since:

2.0.1

createMemberName

public static String createMemberName(Member member)

Returns the qualified name for the member.

Parameters:

member - the member to qualify

Returns:

the qualified name for the member

Since:

2.0.1

getAccessor

public static AbstractAccessor getAccessor(Member javaMember)

Returns the accessor for the member

Parameters:

javaMember - the java member

Returns:

the accessor

Since:

2.0.1

getActualType

public static <T> Class<T> getActualType(Class<?> clazz,
                         String attributeName,
                         Class<?> originalType)

Returns the actual type of the attribute, resolving generic types if necessary.

Type Parameters:

T - the xpected type

Parameters:

clazz - the actual class

attributeName - the name of the attribute

originalType - th original type of the attribute

Returns:

the actual type of the attribute

Since:

2.0.1

getAnnotation

public static <A extends Annotation> A getAnnotation(Member member,
                                     Class<A> annotation)

Returns the annotation instance if the member has the annotation.

Type Parameters:

A - the class of annotation

Parameters:

member - the member

annotation - the type of the annotation instance to return

Returns:

the annotation instance if the member has the annotation or null

Since:

2.0.1

getGenericType

public static <X> Class<X> getGenericType(Member member,
                          int index)

Returns the actual generic type of a class's type parameter of the member.

if the member is a field then field's generic types are checked. Otherwise the member is treated a a method and its return type's is checked.

Type Parameters:

X - the type of the class

Parameters:

member - the member

index - the index number of the generic parameter

Returns:

the class of generic type

Since:

2.0.1

getMemberType

public static Class<?> getMemberType(Member member)

Returns the type class of the member.

Parameters:

member - the member

Returns:

the member's type as java class

Since:

2.0.1

getProperties

public static PropertyDescriptor[] getProperties(Class<?> clazz)

Returns the property descriptors for the class.

Parameters:

clazz - the class

Returns:

the property descriptors

Since:

2.0.1

isCollection

public static boolean isCollection(Class<?> type)

Returns if the type is a collection type.

Note that this method uses equality, not assignability to test.

Parameters:

type - the type to check if it is collection

Returns:

true if the type is a collection type, false otherwise

Since:

2.0.1

setAccessible

public static void setAccessible(Member member,
                 boolean accessible)

Sets the member's accessibility status.

Parameters:

member - the member of which to set accessibility status

accessible - true to set accessible, false to make it not accessible

Since:

2.0.1

warnAnnotations

public static void warnAnnotations(BLogger logger,
                   Member member,
                   Set<Class<? extends Annotation>> annotations)

Logs warnings for annotations that were ignored.

Parameters:

logger - the logger to log the warnings.

member - the member

annotations - the set of annotations allowed

Since:

2.0.1