Package org.polyfrost.oneconfig.utils.v1

Class WrappingUtils

java.lang.Object

org.polyfrost.oneconfig.utils.v1.WrappingUtils

public final class WrappingUtils
extends Object

Various utilities for wrapping and unboxing of arrays and lists

see ArrayCastUtils for more info

Constructor Summary

Constructors

Constructor	Description
WrappingUtils()

Method Summary

Modifier and Type	Method	Description
static Class<?>	getUnwrapped(Class<?> cls)	Return the primitive class for the given wrapped class
static Class<?>	getWrapped(Class<?> cls)	Return the wrapped class for the given primitive class
static boolean	isPrimitiveWrapper(Object o)	returns true if the object is a primitive wrapper
static boolean	isSimpleClass(Class<?> c)
static boolean	isSimpleObject(Object o)	returns true if - the object is a primitive wrapper - the object is a CharSequence
static <T> T	richCast(Object in, Class<T> target)	Method that will attempt to get around the quirks of casting involving primitives in java This method will do the following

Methods inherited from class java.lang.Object

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

Constructor Details

WrappingUtils

public WrappingUtils()

Method Details

getWrapped

public static Class<?> getWrapped(Class<?> cls)

Return the wrapped class for the given primitive class

If this class is not a primitive it will return the same class

getUnwrapped

public static Class<?> getUnwrapped(Class<?> cls)

Return the primitive class for the given wrapped class

If this class is not a wrapper it will return the same class

richCast

public static <T> T richCast(Object in,
 Class<T> target)

Method that will attempt to get around the quirks of casting involving primitives in java
This method will do the following

These actions are effectively chained where applicable so a List<Integer> can become a long[] if needed

• Convert Number classes to the target type such as Float into Double
• Turn Object[] arrays into their actual types by inspecting the type of the first element
• Turn Collection<?> into their array counterparts
• unbox boxed arrays such as Integer[] into int[]
• cast array content to the given type if possible
• convert between common primitve array types such as int[] into long[]

isSimpleObject

public static boolean isSimpleObject(Object o)

returns true if
- the object is a primitive wrapper
- the object is a CharSequence

isSimpleClass

public static boolean isSimpleClass(Class<?> c)

isPrimitiveWrapper

public static boolean isPrimitiveWrapper(Object o)

returns true if the object is a primitive wrapper