io.github.benas.randombeans

Class TypePredicates

java.lang.Object

io.github.benas.randombeans.TypePredicates

public class TypePredicates
extends java.lang.Object

Common predicates to identify types. Usually used in combination to define a collection of types. For example:

     Predicate<Class<?>> predicate = inPackage("java.util").or(inPackage("com.sun"));

Author:

Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)

Constructor Summary

Constructors

Constructor and Description
TypePredicates()

Method Summary

Modifier and Type	Method and Description
static java.util.function.Predicate<java.lang.Class<?>>	hasModifiers(java.lang.Integer modifiers) Create a predicate to check that a type has a given set of modifiers.
static java.util.function.Predicate<java.lang.Class<?>>	inPackage(java.lang.String packageNamePrefix) Create a predicate to check that a type is defined in a given package.
static java.util.function.Predicate<java.lang.Class<?>>	isAbstract() Create a predicate to check if a class is abstract.
static java.util.function.Predicate<java.lang.Class<?>>	isAnnotatedWith(java.lang.Class<? extends java.lang.annotation.Annotation>... annotations) Create a predicate to check that a type is annotated with one of the given annotations.
static java.util.function.Predicate<java.lang.Class<?>>	isArray() Create a predicate to check if a type is an array.
static java.util.function.Predicate<java.lang.Class<?>>	isAssignableFrom(java.lang.Class<?> type) Create a predicate to check if a type is is assignable from another type.
static java.util.function.Predicate<java.lang.Class<?>>	isEnum() Create a predicate to check if a type is an enumeration.
static java.util.function.Predicate<java.lang.Class<?>>	isInterface() Create a predicate to check if a type is an interface.
static java.util.function.Predicate<java.lang.Class<?>>	isPrimitive() Create a predicate to check if a type is primitive.
static java.util.function.Predicate<java.lang.Class<?>>	named(java.lang.String name) Create a predicate to check that a type has a given name.
static java.util.function.Predicate<java.lang.Class<?>>	ofType(java.lang.Class<?> type) Create a predicate to check that a class has a certain type.

Methods inherited from class java.lang.Object

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

Constructor Detail

TypePredicates

public TypePredicates()

Method Detail

named

public static java.util.function.Predicate<java.lang.Class<?>> named(java.lang.String name)

Create a predicate to check that a type has a given name.

Parameters:

name - name on the type

Returns:

Predicate to check that a type has a given name.

ofType

public static java.util.function.Predicate<java.lang.Class<?>> ofType(java.lang.Class<?> type)

Create a predicate to check that a class has a certain type.

Parameters:

type - of the class to check

Returns:

Predicate to check that a class has a certain type

inPackage

public static java.util.function.Predicate<java.lang.Class<?>> inPackage(java.lang.String packageNamePrefix)

Create a predicate to check that a type is defined in a given package.

Parameters:

packageNamePrefix - prefix of the package name

Returns:

Predicate to check that a type is defined in a given package.

isAnnotatedWith

public static java.util.function.Predicate<java.lang.Class<?>> isAnnotatedWith(java.lang.Class<? extends java.lang.annotation.Annotation>... annotations)

Create a predicate to check that a type is annotated with one of the given annotations.

Parameters:

annotations - present on the type

Returns:

Predicate to check that a type is annotated with one of the given annotations.

isInterface

public static java.util.function.Predicate<java.lang.Class<?>> isInterface()

Create a predicate to check if a type is an interface.

Returns:

a predicate to check if a type is an interface

isPrimitive

public static java.util.function.Predicate<java.lang.Class<?>> isPrimitive()

Create a predicate to check if a type is primitive.

Returns:

a predicate to check if a type is primitive

isAbstract

public static java.util.function.Predicate<java.lang.Class<?>> isAbstract()

Create a predicate to check if a class is abstract.

Returns:

a predicate to check if a class is abstract

hasModifiers

public static java.util.function.Predicate<java.lang.Class<?>> hasModifiers(java.lang.Integer modifiers)

Create a predicate to check that a type has a given set of modifiers.

Parameters:

modifiers - of the type to check

Returns:

Predicate to check that a type has a given set of modifiers

isEnum

public static java.util.function.Predicate<java.lang.Class<?>> isEnum()

Create a predicate to check if a type is an enumeration.

Returns:

a predicate to check if a type is an enumeration

isArray

public static java.util.function.Predicate<java.lang.Class<?>> isArray()

Create a predicate to check if a type is an array.

Returns:

a predicate to check if a type is an array

isAssignableFrom

public static java.util.function.Predicate<java.lang.Class<?>> isAssignableFrom(java.lang.Class<?> type)

Create a predicate to check if a type is is assignable from another type.

Returns:

a predicate to check if a type is assignable from another type