Package org.assertj.core.groups

Class FieldsOrPropertiesExtractor

java.lang.Object

org.assertj.core.groups.FieldsOrPropertiesExtractor

public class FieldsOrPropertiesExtractor
extends Object

Understands how to retrieve fields or values from a collection/array of objects.

You just have to give the field/property name or a Function implementation, a collection/array of objects and it will extract the list of field/values from the given objects.

Author:

Joel Costigliola, Mateusz Haligowski

Constructor Summary

Constructors

Constructor	Description
FieldsOrPropertiesExtractor()

Method Summary

Modifier and Type	Method	Description
private static void	checkObjectToExtractFromIsNotNull(Object object)
static <F,T> T[]	extract(F[] objects, Function<? super F,T> extractor)	Call extract(Iterable, Function) after converting objects to an iterable.
static <F,T> List<T>	extract(Iterable<? extends F> objects, Function<? super F,T> extractor)	Behavior is described in AbstractIterableAssert.extracting(Function)

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldsOrPropertiesExtractor

public FieldsOrPropertiesExtractor()

Method Detail

extract

public static <F,T> T[] extract(F[] objects,
                                      Function<? super F,T> extractor)

Call extract(Iterable, Function) after converting objects to an iterable.

Behavior is described in javadoc AbstractObjectArrayAssert.extracting(Function)

Type Parameters:

F - type of elements to extract a value from

T - the extracted value type

Parameters:

objects - the elements to extract a value from

extractor - the extractor function

Returns:

the extracted values

extract

public static <F,T> List<T> extract(Iterable<? extends F> objects,
                                          Function<? super F,T> extractor)

Behavior is described in AbstractIterableAssert.extracting(Function)

Type Parameters:

F - type of elements to extract a value from

T - the extracted value type

Parameters:

objects - the elements to extract a value from

extractor - the extractor function

Returns:

the extracted values

checkObjectToExtractFromIsNotNull

private static void checkObjectToExtractFromIsNotNull(Object object)