dev.dejvokep.boostedyaml.utils.conversion

Class PrimitiveConversions

java.lang.Object

dev.dejvokep.boostedyaml.utils.conversion.PrimitiveConversions

public class PrimitiveConversions
extends Object

Utility class for primitives.

Field Summary

Fields

Modifier and Type	Field and Description
static Map<Class<?>,Class<?>>	NON_NUMERIC_CONVERSIONS All non-numeric primitives and their corresponding non-primitive representations; vice-versa.
static Set<Class<?>>	NUMERIC_CLASSES All numeric data type classes.
static Map<Class<?>,Class<?>>	NUMERIC_PRIMITIVES All numeric primitives and their corresponding non-primitive representations.
static Map<Class<?>,Class<?>>	PRIMITIVES_TO_OBJECTS All primitives mapped to their object representations.

Constructor Summary

Constructors

Constructor and Description
PrimitiveConversions()

Method Summary

Modifier and Type	Method and Description
static Object	convertNumber(Object value, Class<?> target) Converts a number to the target type.
static boolean	isNumber(Class<?> clazz) Returns if the given class represents a numeric data type.
static Optional<BigInteger>	toBigInt(Object value) Converts the given value to big integer.
static Optional<Byte>	toByte(Object value) Converts the given value to byte.
static Optional<Double>	toDouble(Object value) Converts the given value to double.
static Optional<Float>	toFloat(Object value) Converts the given value to float.
static Optional<Integer>	toInt(Object value) Converts the given value to integer.
static Optional<Long>	toLong(Object value) Converts the given value to long.
static Optional<Short>	toShort(Object value) Converts the given value to short.

Methods inherited from class java.lang.Object

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

Field Detail

NUMERIC_PRIMITIVES

public static final Map<Class<?>,Class<?>> NUMERIC_PRIMITIVES

All numeric primitives and their corresponding non-primitive representations.

PRIMITIVES_TO_OBJECTS

public static final Map<Class<?>,Class<?>> PRIMITIVES_TO_OBJECTS

All primitives mapped to their object representations.

NON_NUMERIC_CONVERSIONS

public static final Map<Class<?>,Class<?>> NON_NUMERIC_CONVERSIONS

All non-numeric primitives and their corresponding non-primitive representations; vice-versa.

NUMERIC_CLASSES

public static final Set<Class<?>> NUMERIC_CLASSES

All numeric data type classes.

Constructor Detail

PrimitiveConversions

public PrimitiveConversions()

Method Detail

isNumber

public static boolean isNumber(@NotNull
                               Class<?> clazz)

Returns if the given class represents a numeric data type.

Parameters:

clazz - the class to check

Returns:

if it's a numeric class

convertNumber

public static Object convertNumber(@NotNull
                                   Object value,
                                   @NotNull
                                   Class<?> target)

Converts a number to the target type. It must be guaranteed that the given object is an instance of Number and NUMERIC_CLASSES must contain the target class.

This method supports casting between two numeric primitives, two non-primitive numeric representations and one of each kind. Casting between any primitive type, and it's non-primitive representation is also supported.

Parameters:

value - the value to convert

target - the target type

Returns:

the converted number

toInt

public static Optional<Integer> toInt(@Nullable
                                      Object value)

Converts the given value to integer.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Integer.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the integer

toByte

public static Optional<Byte> toByte(@Nullable
                                    Object value)

Converts the given value to byte.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Byte.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the byte

toLong

public static Optional<Long> toLong(@Nullable
                                    Object value)

Converts the given value to long.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Long.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the long

toDouble

public static Optional<Double> toDouble(@Nullable
                                        Object value)

Converts the given value to double.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Double.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the double

toFloat

public static Optional<Float> toFloat(@Nullable
                                      Object value)

Converts the given value to float.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Float.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the float

toShort

public static Optional<Short> toShort(@Nullable
                                      Object value)

Converts the given value to short.

If the given value is null, not an instance of Number or could not be converted by parsing from string via Short.valueOf(String), returns an empty optional.

Parameters:

value - the number

Returns:

the short

toBigInt

public static Optional<BigInteger> toBigInt(@Nullable
                                            Object value)

Converts the given value to big integer.

If the given value is null, not an instance of BigInteger, Number or could not be converted by parsing from string via BigInteger(String), returns an empty optional.

Parameters:

value - the number

Returns:

the big integer