org.eclipse.xtext.xbase.typesystem.util

Class Maps2

java.lang.Object

org.eclipse.xtext.xbase.typesystem.util.Maps2

public class Maps2
extends java.lang.Object

Provides newLinkedHashMapWithExpectedSize(int). Everything else should be obtained from Maps.

Constructor Summary

Constructors

Constructor and Description
Maps2()

Method Summary

Modifier and Type	Method and Description
static <K,V> java.util.LinkedHashMap<K,V>	newLinkedHashMapWithExpectedSize(int expectedSize) Creates a LinkedHashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth.
static <K,V> void	putAllIntoListMap(K key, java.util.Collection<? extends V> values, java.util.Map<? super K,java.util.List<V>> map) Puts a value into a map that supports lists as values.
static <K,V> void	putIntoListMap(K key, V value, java.util.Map<? super K,java.util.List<V>> map) Puts a value into a map that supports lists as values.
static <K,V> void	putIntoSetMap(K key, V value, java.util.Map<? super K,java.util.Set<V>> map) Puts a value into a map that supports lists as values.

Methods inherited from class java.lang.Object

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

Constructor Detail

Maps2

public Maps2()

Method Detail

newLinkedHashMapWithExpectedSize

public static <K,V> java.util.LinkedHashMap<K,V> newLinkedHashMapWithExpectedSize(int expectedSize)

Creates a LinkedHashMap instance, with a high enough "initial capacity" that it should hold expectedSize elements without growth. This behavior cannot be broadly guaranteed, but it is observed to be true for OpenJDK 1.6. It also can't be guaranteed that the method isn't inadvertently oversizing the returned map.

Parameters:

expectedSize - the number of elements you expect to add to the returned map

Returns:

a new, empty LinkedHashMap with enough capacity to hold expectedSize elements without resizing

Throws:

java.lang.IllegalArgumentException - if expectedSize is negative

putIntoListMap

public static <K,V> void putIntoListMap(K key,
                                        V value,
                                        java.util.Map<? super K,java.util.List<V>> map)

Puts a value into a map that supports lists as values. The list is created on-demand.

putIntoSetMap

public static <K,V> void putIntoSetMap(K key,
                                       V value,
                                       java.util.Map<? super K,java.util.Set<V>> map)

Puts a value into a map that supports lists as values. The list is created on-demand.

putAllIntoListMap

public static <K,V> void putAllIntoListMap(K key,
                                           java.util.Collection<? extends V> values,
                                           java.util.Map<? super K,java.util.List<V>> map)

Puts a value into a map that supports lists as values. The list is created on-demand.