public abstract class CollectionFactory extends Object
The goal of this class is to avoid runtime dependencies on a specific Java version, while nevertheless using the best collection implementation that is available at runtime.
| Constructor and Description |
|---|
CollectionFactory() |
| Modifier and Type | Method and Description |
|---|---|
static <E> Collection<E> |
createApproximateCollection(Object collection,
int initialCapacity)
Create the most approximate collection for the given collection.
|
static <K,V> Map<K,V> |
createApproximateMap(Object map,
int initialCapacity)
Create the most approximate map for the given map.
|
static <E> Collection<E> |
createCollection(Class<?> collectionType,
int initialCapacity)
Create the most appropriate collection for the given collection type.
|
static <K,V> Map<K,V> |
createMap(Class<?> mapType,
int initialCapacity)
Create the most approximate map for the given map.
|
static boolean |
isApproximableCollectionType(Class<?> collectionType)
Determine whether the given collection type is an approximable type,
i.e.
|
static boolean |
isApproximableMapType(Class<?> mapType)
Determine whether the given map type is an approximable type,
i.e.
|
public static boolean isApproximableCollectionType(Class<?> collectionType)
createApproximateCollection(java.lang.Object, int) can approximate.collectionType - the collection type to checktrue if the type is approximable,
false if it is notpublic static <E> Collection<E> createApproximateCollection(Object collection, int initialCapacity)
Creates an ArrayList, TreeSet or linked Set for a List, SortedSet or Set, respectively.
collection - the original Collection objectinitialCapacity - the initial capacityArrayList,
TreeSet,
LinkedHashSetpublic static <E> Collection<E> createCollection(Class<?> collectionType, int initialCapacity)
Creates an ArrayList, TreeSet or linked Set for a List, SortedSet or Set, respectively.
collectionType - the desired type of the target CollectioninitialCapacity - the initial capacityArrayList,
TreeSet,
LinkedHashSetpublic static boolean isApproximableMapType(Class<?> mapType)
createApproximateMap(java.lang.Object, int) can approximate.mapType - the map type to checktrue if the type is approximable,
false if it is notpublic static <K,V> Map<K,V> createApproximateMap(Object map, int initialCapacity)
Creates a TreeMap or linked Map for a SortedMap or Map, respectively.
map - the original Map objectinitialCapacity - the initial capacityTreeMap,
LinkedHashMappublic static <K,V> Map<K,V> createMap(Class<?> mapType, int initialCapacity)
Creates a TreeMap or linked Map for a SortedMap or Map, respectively.
mapType - the desired type of the target MapinitialCapacity - the initial capacityTreeMap,
LinkedHashMap