org.broadleafcommerce.common.util

Class BLCMapUtils

java.lang.Object

org.broadleafcommerce.common.util.BLCMapUtils

public class BLCMapUtils
extends Object

Convenience methods for interacting with maps

Author:

Andre Azzolini (apazzolini)

Constructor Summary

Constructors

Constructor and Description
BLCMapUtils()

Method Summary

Modifier and Type	Method and Description
static <K,CV extends Iterable<V>,V> Map<K,List<V>>	keyedListMap(CV values, TypedClosure<K,V> closure) Given a collection of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to a list of values that map to that key.
static <K,CV extends Iterable<V>,V> Map<K,V>	keyedMap(CV values, TypedClosure<K,V> closure) Given a collection of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to the value.
static <K,V> Map<K,V>	keyedMap(V[] values, TypedClosure<K,V> closure) Given an array of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to the value.
static <K,V> Map<K,V>	valueSortedMap(Map<K,V> map, Comparator<Map.Entry<K,V>> comparator)

Methods inherited from class java.lang.Object

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

Constructor Detail

BLCMapUtils

public BLCMapUtils()

Method Detail

keyedMap

public static <K,CV extends Iterable<V>,V> Map<K,V> keyedMap(CV values,
                                                             TypedClosure<K,V> closure)

Given a collection of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to the value. Note: If two values share the same key, the later one will override the previous one in the returned map

Parameters:

values -

closure -

Returns:

the map

See Also:

List --> Map

keyedMap

public static <K,V> Map<K,V> keyedMap(V[] values,
                                      TypedClosure<K,V> closure)

Given an array of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to the value. Note: If two values share the same key, the later one will override the previous one in the returned map

Parameters:

values -

closure -

Returns:

the map

See Also:

V[] --> Map

keyedListMap

public static <K,CV extends Iterable<V>,V> Map<K,List<V>> keyedListMap(CV values,
                                                                       TypedClosure<K,V> closure)

Given a collection of values and a TypedClosure that maps an appropriate key for a given value, returns a HashMap of the key to a list of values that map to that key.

Parameters:

values -

closure -

Returns:

the map

See Also:

List --> Map>

valueSortedMap

public static <K,V> Map<K,V> valueSortedMap(Map<K,V> map,
                                            Comparator<Map.Entry<K,V>> comparator)