org.lockss.util

Class MapUtil

java.lang.Object

org.lockss.util.MapUtil

public class MapUtil
extends Object

Map utilities.

Since:

1.1.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	MapUtil.KeyValuePairIterator<K,V>
protected static class	MapUtil.ListOfListsKeyValuePairIterator<K,V>
protected static class	MapUtil.SequentialKeyValuePairIterator<K,V>

Method Summary

Modifier and Type	Method and Description
static <V> Map<String,V>	expandAlternativeKeyLists(Map<String,V> map) Returns a copy of the map, treating keys as semicolon-separated list of alternative actual keys.
static <K,V> Map<K,V>	fromList(Class<K> keyType, Class<V> valueType, List<?> keyValuePairs)
static <K,V> Map<K,V>	fromList(List<?> keyValuePairs) Return a map with keys and values taken from alternating list elements ([key1, val1, key2, val2, ...]), or from sublists ([ [key1, val1], [key2, val2], ...])
static <K,V> Map<K,V>	map(Class<K> keyType, Class<V> valueType, Object... elements)
static <K,V> Map<K,V>	map(Object... elements) Create a map from any number of pairs of arguments.

Methods inherited from class java.lang.Object

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

Method Detail

map

public static <K,V> Map<K,V> map(Object... elements)

Create a map from any number of pairs of arguments.

map

public static <K,V> Map<K,V> map(Class<K> keyType,
                                 Class<V> valueType,
                                 Object... elements)

fromList

public static <K,V> Map<K,V> fromList(List<?> keyValuePairs)

Return a map with keys and values taken from alternating list elements ([key1, val1, key2, val2, ...]), or from sublists ([ [key1, val1], [key2, val2], ...])

fromList

public static <K,V> Map<K,V> fromList(Class<K> keyType,
                                      Class<V> valueType,
                                      List<?> keyValuePairs)

expandAlternativeKeyLists

public static <V> Map<String,V> expandAlternativeKeyLists(Map<String,V> map)

Returns a copy of the map, treating keys as semicolon-separated list of alternative actual keys. (Eg, the map [k1 => v1, k2;k3 => v2] is transformed into [k1 => v1, k2 => v2, k3 => v2]. The keys are trimmed.