io.github.benas.randombeans

Class FieldPredicates

java.lang.Object

io.github.benas.randombeans.FieldPredicates

public class FieldPredicates
extends java.lang.Object

Common predicates to identify fields. Usually used in combination to define a field in an object graph. For example:

     Predicate<Field> predicate = named("name").and(ofType(String.class)).and(inClass(Person.class));

Author:

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

Constructor Summary

Constructors

Constructor and Description
FieldPredicates()

Method Summary

Modifier and Type	Method and Description
static java.util.function.Predicate<java.lang.reflect.Field>	hasModifiers(java.lang.Integer modifiers) Create a predicate to check that a field has a given set of modifiers.
static java.util.function.Predicate<java.lang.reflect.Field>	inClass(java.lang.Class<?> clazz) Create a predicate to check that a field is defined in a given class.
static java.util.function.Predicate<java.lang.reflect.Field>	isAnnotatedWith(java.lang.Class<? extends java.lang.annotation.Annotation>... annotations) Create a predicate to check that a field is annotated with one of the given annotations.
static java.util.function.Predicate<java.lang.reflect.Field>	named(java.lang.String name) Create a predicate to check that a field has a certain name pattern.
static java.util.function.Predicate<java.lang.reflect.Field>	ofType(java.lang.Class<?> type) Create a predicate to check that a field has a certain type.

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldPredicates

public FieldPredicates()

Method Detail

named

public static java.util.function.Predicate<java.lang.reflect.Field> named(java.lang.String name)

Create a predicate to check that a field has a certain name pattern.

Parameters:

name - pattern of the field name to check

Returns:

Predicate to check that a field has a certain name pattern

ofType

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

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

Parameters:

type - of the field to check

Returns:

Predicate to check that a field has a certain type

inClass

public static java.util.function.Predicate<java.lang.reflect.Field> inClass(java.lang.Class<?> clazz)

Create a predicate to check that a field is defined in a given class.

Parameters:

clazz - enclosing type of the field to check

Returns:

Predicate to check that a field is defined in a given class.

isAnnotatedWith

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

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

Parameters:

annotations - present on the field

Returns:

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

hasModifiers

public static java.util.function.Predicate<java.lang.reflect.Field> hasModifiers(java.lang.Integer modifiers)

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

Parameters:

modifiers - of the field to check

Returns:

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