Class Mapper

java.lang.Object

com.apptasticsoftware.rssreader.util.Mapper

public final class Mapper
extends Object

Provides methods for mapping field

Method Summary

Modifier and Type	Method	Description
static <T> T	createIfNull(Supplier<Optional<T>> getter, Consumer<T> setter, Supplier<T> factory)	Create a new instance if a getter returns optional empty and assigns the field the new instance.
static <T> Optional<T>	createIfNullOptional(Supplier<Optional<T>> getter, Consumer<T> setter, Supplier<T> factory)	Create a new instance if a getter returns optional empty and assigns the field the new instance.
static <T> List<T>	emptyListIfNull(List<T> list)	Returns an empty list if the provided list is null.
static void	mapBoolean(String text, Consumer<Boolean> func)	Maps a boolean text value (true, false, no or yes) to a boolean field.
static <T> void	mapIfEmpty(String text, Supplier<T> getter, Consumer<String> setter)	Map value if field has not been mapped before
static void	mapInteger(String text, Consumer<Integer> func)	Maps a integer text value to a integer field.
static void	mapLong(String text, Consumer<Long> func)	Maps a long text value to a long field.

Methods inherited from class Object

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

Method Details

mapBoolean

public static void mapBoolean(String text,
 Consumer<Boolean> func)

Maps a boolean text value (true, false, no or yes) to a boolean field. Text value can be in any casing.

Parameters:

text - text value

func - boolean setter method

mapInteger

public static void mapInteger(String text,
 Consumer<Integer> func)

Maps a integer text value to a integer field.

Parameters:

text - text value

func - integer setter method

mapLong

public static void mapLong(String text,
 Consumer<Long> func)

Maps a long text value to a long field.

Parameters:

text - text value

func - long setter method

mapIfEmpty

public static <T> void mapIfEmpty(String text,
 Supplier<T> getter,
 Consumer<String> setter)

Map value if field has not been mapped before

Type Parameters:

T - type

Parameters:

text - value to map

getter - getter to check if field is empty

setter - setter to set value

createIfNull

public static <T> T createIfNull(Supplier<Optional<T>> getter,
 Consumer<T> setter,
 Supplier<T> factory)

Create a new instance if a getter returns optional empty and assigns the field the new instance.

Type Parameters:

T - any class

Parameters:

getter - getter method

setter - setter method

factory - factory for creating a new instance if field is not set before

Returns:

existing or new instance

createIfNullOptional

public static <T> Optional<T> createIfNullOptional(Supplier<Optional<T>> getter,
 Consumer<T> setter,
 Supplier<T> factory)

Create a new instance if a getter returns optional empty and assigns the field the new instance.

Type Parameters:

T - any class

Parameters:

getter - getter method

setter - setter method

factory - factory for creating a new instance if field is not set before

Returns:

existing or new instance

emptyListIfNull

public static <T> List<T> emptyListIfNull(List<T> list)

Returns an empty list if the provided list is null.

Type Parameters:

T - the type of items in the list

Parameters:

list - the list to check

Returns:

an empty list if the provided list is null, otherwise returns the provided list