com.legacy.structure_gel.util

Class GelCollectors

java.lang.Object

com.legacy.structure_gel.util.GelCollectors

public class GelCollectors
extends java.lang.Object

Contains helper methods for various types of Collection, including an alternative to creating a Map and various ways to make immutable collections mutable.

Author:

David

Constructor Summary

Constructors

Constructor and Description
GelCollectors()

Method Summary

Modifier and Type	Method and Description
static <T> java.util.List<T>	addToList(java.util.List<T> list, java.util.List<T> list2) Merges the entries from the two lists and returns the result.
static <T> java.util.List<T>	addToList(java.util.List<T> list, T obj) Adds the object passed to the list and returns the result.
static <K,V> java.util.Map<K,V>	addToMap(java.util.Map<K,V> map, K key, V value) Adds the key and value passed to the map and returns the result.
static <K,V> java.util.Map<K,V>	addToMap(java.util.Map<K,V> map, K key, V value, java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction, java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction) Adds the key and value passed to the map, applies the passed functions to all entries, and returns the result.
static <K,V> java.util.Map<K,V>	addToMap(java.util.Map<K,V> map, java.util.Map<K,V> map2) Merges the entries from the two maps and returns the result.
static <K,V> java.util.Map<K,V>	addToMap(java.util.Map<K,V> map, java.util.Map<K,V> map2, java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction, java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction) Merges the entries from the two maps, applies the passed functions to all entries, and returns the result.
static <T> java.util.Set<T>	addToSet(java.util.Set<T> set, java.util.Set<T> set2) Merges the entries from the two sets and returns the result.
static <T> java.util.Set<T>	addToSet(java.util.Set<T> set, T obj) Adds the object passed to the set and returns the result.
static <T> java.util.List<T>	makeListMutable(java.util.List<T> list) Creates a mutable version of the list passed in and returns it.
static <T> java.util.List<T>	makeListMutable(java.util.List<T> list, java.util.function.Function<T,T> listFunction) Creates a mutable version of the list passed in, applies the passed function to all entries, and returns it.
static <K,V> java.util.Map<K,V>	makeMapMutable(java.util.Map<K,V> map) Creates a mutable version of the map passed in and returns it.
static <K,V> java.util.Map<K,V>	makeMapMutable(java.util.Map<K,V> map, java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction, java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction) Creates a mutable version of the map passed in, applies the passed functions to all entries, and returns it.
static <T> java.util.Set<T>	makeSetMutable(java.util.Set<T> set) Creates a mutable version of the set passed in and returns it.
static <T> java.util.Set<T>	makeSetMutable(java.util.Set<T> set, java.util.function.Function<T,T> setFunction) Creates a mutable version of the set passed in, applies the passed function to all entries, and returns it.
static <T,V> java.util.Map<T,V>	mapOf(java.lang.Class<T> keyClass, java.lang.Class<V> valueClass, java.lang.Object... objects) A method to create a map with any amount of arguments.

Methods inherited from class java.lang.Object

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

Constructor Detail

GelCollectors

public GelCollectors()

Method Detail

mapOf

public static <T,V> java.util.Map<T,V> mapOf(java.lang.Class<T> keyClass,
                                             java.lang.Class<V> valueClass,
                                             java.lang.Object... objects)
                                      throws java.lang.ClassCastException,
                                             java.lang.ArrayIndexOutOfBoundsException

A method to create a map with any amount of arguments. Note that this does have issues with generic types.

Parameters:

keyClass -

valueClass -

objects -

Returns:

Map

Throws:

java.lang.ClassCastException

java.lang.ArrayIndexOutOfBoundsException

addToList

public static <T> java.util.List<T> addToList(java.util.List<T> list,
                                              T obj)

Adds the object passed to the list and returns the result.

Parameters:

list -

obj -

Returns:

List

addToList

public static <T> java.util.List<T> addToList(java.util.List<T> list,
                                              java.util.List<T> list2)

Merges the entries from the two lists and returns the result.

Parameters:

list -

list2 -

Returns:

List

makeListMutable

public static <T> java.util.List<T> makeListMutable(java.util.List<T> list)

Creates a mutable version of the list passed in and returns it.

Parameters:

list -

Returns:

List

makeListMutable

public static <T> java.util.List<T> makeListMutable(java.util.List<T> list,
                                                    java.util.function.Function<T,T> listFunction)

Creates a mutable version of the list passed in, applies the passed function to all entries, and returns it.

Parameters:

list -

listFunction -

Returns:

List

addToSet

public static <T> java.util.Set<T> addToSet(java.util.Set<T> set,
                                            T obj)

Adds the object passed to the set and returns the result.

Parameters:

set -

obj -

Returns:

Set

addToSet

public static <T> java.util.Set<T> addToSet(java.util.Set<T> set,
                                            java.util.Set<T> set2)

Merges the entries from the two sets and returns the result.

Parameters:

set -

set2 -

Returns:

Set

makeSetMutable

public static <T> java.util.Set<T> makeSetMutable(java.util.Set<T> set)

Creates a mutable version of the set passed in and returns it.

Parameters:

set -

Returns:

Set

makeSetMutable

public static <T> java.util.Set<T> makeSetMutable(java.util.Set<T> set,
                                                  java.util.function.Function<T,T> setFunction)

Creates a mutable version of the set passed in, applies the passed function to all entries, and returns it.

Parameters:

set -

setFunction -

Returns:

Set

addToMap

public static <K,V> java.util.Map<K,V> addToMap(java.util.Map<K,V> map,
                                                java.util.Map<K,V> map2,
                                                java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction,
                                                java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction)

Merges the entries from the two maps, applies the passed functions to all entries, and returns the result.

Parameters:

map -

map2 -

keyFunction -

valueFunction -

Returns:

Map

addToMap

public static <K,V> java.util.Map<K,V> addToMap(java.util.Map<K,V> map,
                                                java.util.Map<K,V> map2)

Merges the entries from the two maps and returns the result.

Parameters:

map -

map2 -

Returns:

Map

addToMap

public static <K,V> java.util.Map<K,V> addToMap(java.util.Map<K,V> map,
                                                K key,
                                                V value,
                                                java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction,
                                                java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction)

Adds the key and value passed to the map, applies the passed functions to all entries, and returns the result.

Parameters:

map -

key -

value -

keyFunction -

valueFunction -

Returns:

Map

addToMap

public static <K,V> java.util.Map<K,V> addToMap(java.util.Map<K,V> map,
                                                K key,
                                                V value)

Adds the key and value passed to the map and returns the result.

Parameters:

map -

key -

value -

Returns:

Map

makeMapMutable

public static <K,V> java.util.Map<K,V> makeMapMutable(java.util.Map<K,V> map,
                                                      java.util.function.Function<java.util.Map.Entry<K,V>,K> keyFunction,
                                                      java.util.function.Function<java.util.Map.Entry<K,V>,V> valueFunction)

Creates a mutable version of the map passed in, applies the passed functions to all entries, and returns it.

Parameters:

map -

keyFunction -

valueFunction -

Returns:

Map

makeMapMutable

public static <K,V> java.util.Map<K,V> makeMapMutable(java.util.Map<K,V> map)

Creates a mutable version of the map passed in and returns it.

Parameters:

map -

Returns:

Map