com.enjin.sdk.utils.reflection

Class SafeField

java.lang.Object

com.enjin.sdk.utils.reflection.SafeField

public class SafeField
extends java.lang.Object

Class providing for safe reflection of class fields.

Constructor Summary

Constructors

Constructor and Description
SafeField(java.lang.reflect.Field field) Constructs a safe reflection field for the given field.

Method Summary

Modifier and Type	Method and Description
<T> java.util.Optional<T>	get(java.lang.Object instance, java.lang.Class<T> type) Gets the value assigned to the instance field and casts it to the provided type.
java.lang.reflect.Field	getField()
<T> java.util.Optional<T>	getStatic(java.lang.Class<T> type) Gets the value assigned to a class field and casts it to the provided type.

Methods inherited from class java.lang.Object

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

Constructor Detail

SafeField

public SafeField(java.lang.reflect.Field field)

Constructs a safe reflection field for the given field.

Parameters:

field - the field

Method Detail

get

public <T> java.util.Optional<T> get(java.lang.Object instance,
                                     java.lang.Class<T> type)

Gets the value assigned to the instance field and casts it to the provided type.

Type Parameters:

T - the type to cast to

Parameters:

instance - the object instance

type - the value type

Returns:

empty optional if unable to get value or value is null, else wrapped value

Throws:

java.lang.IllegalAccessException - if the Field object is enforcing Java language access control and the underlying field is inaccessible

java.lang.IllegalArgumentException - if the specified object is not an instance of the class or interface declaring the underlying field (or a subclass or implementor thereof)

getStatic

public <T> java.util.Optional<T> getStatic(java.lang.Class<T> type)

Gets the value assigned to a class field and casts it to the provided type.

Type Parameters:

T - the type to cast to

Parameters:

type - the value type

Returns:

empty optional if unable to get value or value is null, else wrapped value

getField

public java.lang.reflect.Field getField()

Returns:

the field