jalse.entities.functions

Class Functions

java.lang.Object

jalse.entities.functions.Functions

public final class Functions
extends java.lang.Object

A utility for creating EntityFunction implementations.

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.function.Supplier<java.util.UUID>	RANDOM_ID_SUPPLIER An supplier for random IDs.

Method Summary

Modifier and Type	Method and Description
static void	checkHasParams(java.lang.reflect.Method m) Checks whether the method has params.
static void	checkHasReturnType(java.lang.reflect.Method m) Checks whether the method has a return type.
static void	checkNoParams(java.lang.reflect.Method m) Checks whether the method has no params.
static void	checkNoReturnType(java.lang.reflect.Method m) Checks whether the method has a void return type.
static void	checkNotDefault(java.lang.reflect.Method m) Checks whether the method is not default.
static java.lang.Object	defaultValue(java.lang.Class<?> type) Gets the default value for a primitive wrapper.
static java.lang.reflect.Type	firstGenericTypeArg(java.lang.reflect.Type pt) Gets the first generic type argument for a parameterised type.
static java.util.Set<java.util.function.Supplier<java.util.UUID>>	getIDSuppliers(java.lang.reflect.Method m) Gets all the EntityID annotations and transforms into ID suppliers.
static java.util.function.Supplier<java.util.UUID>	getSingleIDSupplier(java.lang.reflect.Method m) Gets a single ID supplier from a method.
static boolean	hasParams(java.lang.reflect.Method m) Wether the method has parameters.
static boolean	hasReturnType(java.lang.reflect.Method m) Checks whether a method has a return type.
static boolean	isPrimitive(java.lang.reflect.Type t) Whether the type represents a primitive type.
static boolean	isWrapper(java.lang.Class<?> type) Checks to see if the specified type is a primitive wrapper.
static boolean	returnTypeIs(java.lang.reflect.Method m, java.lang.Class<?> clazz) Whether the method return type matches the supplied type.
static java.lang.Class<?>	toClass(java.lang.reflect.Type type) Attempts to resolve raw class from type.
static java.util.function.Supplier<java.util.UUID>	toIDSupplier(EntityID id) Transforms the EntityID to a UUID supplier.
static java.lang.Class<?>	unwrap(java.lang.Class<?> type) Unwraps the primitive wrapper to the primitive type.
static void	validateEntityID(EntityID id) Validates an EntityID annotation is correctly formed.
static java.lang.Class<?>	wrap(java.lang.Class<?> type) Gets the wrapper type for the primitive type.

Methods inherited from class java.lang.Object

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

Field Detail

RANDOM_ID_SUPPLIER

public static final java.util.function.Supplier<java.util.UUID> RANDOM_ID_SUPPLIER

An supplier for random IDs.

See Also:

UUID.randomUUID()

Method Detail

checkHasParams

public static void checkHasParams(java.lang.reflect.Method m)
                           throws java.lang.IllegalArgumentException

Checks whether the method has params.

Parameters:

m - Method to check.

Throws:

java.lang.IllegalArgumentException - If method has no params.

checkHasReturnType

public static void checkHasReturnType(java.lang.reflect.Method m)
                               throws java.lang.IllegalArgumentException

Checks whether the method has a return type.

Parameters:

m - Method to check.

Throws:

java.lang.IllegalArgumentException - If method has no return type.

checkNoParams

public static void checkNoParams(java.lang.reflect.Method m)
                          throws java.lang.IllegalArgumentException

Checks whether the method has no params.

Parameters:

m - Method to check.

Throws:

java.lang.IllegalArgumentException - If method has params.

checkNoReturnType

public static void checkNoReturnType(java.lang.reflect.Method m)
                              throws java.lang.IllegalArgumentException

Checks whether the method has a void return type.

Parameters:

m - Method to check.

Throws:

java.lang.IllegalArgumentException - If method has a non-void return type.

checkNotDefault

public static void checkNotDefault(java.lang.reflect.Method m)
                            throws java.lang.IllegalArgumentException

Checks whether the method is not default.

Parameters:

m - Method to check.

Throws:

java.lang.IllegalArgumentException - If method is default.

defaultValue

public static java.lang.Object defaultValue(java.lang.Class<?> type)

Gets the default value for a primitive wrapper.

Parameters:

type - Primitive wrapper type.

Returns:

The default value.

firstGenericTypeArg

public static java.lang.reflect.Type firstGenericTypeArg(java.lang.reflect.Type pt)

Gets the first generic type argument for a parameterised type.

Parameters:

pt - Type to take from.

Returns:

The first generic type argument or null if not a parameterised type.

getIDSuppliers

public static java.util.Set<java.util.function.Supplier<java.util.UUID>> getIDSuppliers(java.lang.reflect.Method m)

Gets all the EntityID annotations and transforms into ID suppliers.

Parameters:

m - Method to check.

Returns:

ID supplier set.

See Also:

toIDSupplier(EntityID)

getSingleIDSupplier

public static java.util.function.Supplier<java.util.UUID> getSingleIDSupplier(java.lang.reflect.Method m)
                                                                       throws java.lang.IllegalArgumentException

Gets a single ID supplier from a method.

Parameters:

m - Method to check.

Returns:

The single ID supplier or null if none found.

Throws:

java.lang.IllegalArgumentException - If there are multiple ID suppliers found.

hasParams

public static boolean hasParams(java.lang.reflect.Method m)

Wether the method has parameters.

Parameters:

m - Method to check.

Returns:

Whether it had parameters.

hasReturnType

public static boolean hasReturnType(java.lang.reflect.Method m)

Checks whether a method has a return type.

Parameters:

m - Method to check.

Returns:

Whether it had a return type.

isPrimitive

public static boolean isPrimitive(java.lang.reflect.Type t)

Whether the type represents a primitive type.

Parameters:

t - Type to check.

Returns:

Whether the type is primitive.

isWrapper

public static boolean isWrapper(java.lang.Class<?> type)

Checks to see if the specified type is a primitive wrapper.

Parameters:

type - Type to check.

Returns:

Whether the type is a primitive wrapper.

returnTypeIs

public static boolean returnTypeIs(java.lang.reflect.Method m,
                                   java.lang.Class<?> clazz)

Whether the method return type matches the supplied type.

Parameters:

m - Method to check.

clazz - Possible return type to check.

Returns:

Whether the actual return type matches the check type.

toClass

public static java.lang.Class<?> toClass(java.lang.reflect.Type type)

Attempts to resolve raw class from type.

Parameters:

type - Type to resolve for.

Returns:

Resolved class.

toIDSupplier

public static java.util.function.Supplier<java.util.UUID> toIDSupplier(EntityID id)

Transforms the EntityID to a UUID supplier.

Parameters:

id - ID annotation.

Returns:

ID supplier using annotation.

See Also:

validateEntityID(EntityID)

unwrap

public static java.lang.Class<?> unwrap(java.lang.Class<?> type)

Unwraps the primitive wrapper to the primitive type.

Parameters:

type - Wrapper type to unwrap.

Returns:

The unwrapped primitive type.

Throws:

java.lang.IllegalArgumentException - If the type is not a primitive wrapper.

validateEntityID

public static void validateEntityID(EntityID id)

Validates an EntityID annotation is correctly formed.

Parameters:

id - ID to check.

wrap

public static java.lang.Class<?> wrap(java.lang.Class<?> type)

Gets the wrapper type for the primitive type.

Parameters:

type - Primitive type to wrap.

Returns:

The primitive wrapper type.

Throws:

java.lang.IllegalArgumentException - If the type is not primitive.