com.google.common.collect.Maps.newEnumMap()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中com.google.common.collect.Maps.newEnumMap()方法的一些代码示例，展示了Maps.newEnumMap()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Maps.newEnumMap()方法的具体详情如下：
包路径：com.google.common.collect.Maps
类名称：Maps
方法名：newEnumMap

Maps.newEnumMap介绍

[英]Creates an EnumMap instance.
[中]创建一个EnumMap实例。

代码示例

代码示例来源：origin: google/guava

public void testEnumMapWithInitialEnumMap() {
 EnumMap<SomeEnum, Integer> original = Maps.newEnumMap(SomeEnum.class);
 original.put(SomeEnum.SOME_INSTANCE, 0);
 EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original);
 assertEquals(original, copy);
}

代码示例来源：origin: MovingBlocks/Terasology

public BlockAppearance() {
  blockParts = Maps.newEnumMap(BlockPart.class);
  textureAtlasPos = Maps.newEnumMap(BlockPart.class);
  for (BlockPart part : BlockPart.values()) {
    textureAtlasPos.put(part, new Vector2f());
  }
}

代码示例来源：origin: MovingBlocks/Terasology

public SectionDefinitionData() {
  colorSources = Maps.newEnumMap(BlockPart.class);
  colorOffsets = Maps.newEnumMap(BlockPart.class);
  for (BlockPart part : BlockPart.values()) {
    colorSources.put(part, DefaultColorSource.DEFAULT);
    colorOffsets.put(part, new Vector4f(1, 1, 1, 1));
  }
}

代码示例来源：origin: google/guava

/**
 * For a given Enum type, creates an immutable map from each of the Enum's values to a
 * corresponding LockGraphNode, with the {@code allowedPriorLocks} and {@code
 * disallowedPriorLocks} prepopulated with nodes according to the natural ordering of the
 * associated Enum values.
 */
@VisibleForTesting
static <E extends Enum<E>> Map<E, LockGraphNode> createNodes(Class<E> clazz) {
 EnumMap<E, LockGraphNode> map = Maps.newEnumMap(clazz);
 E[] keys = clazz.getEnumConstants();
 final int numKeys = keys.length;
 ArrayList<LockGraphNode> nodes = Lists.newArrayListWithCapacity(numKeys);
 // Create a LockGraphNode for each enum value.
 for (E key : keys) {
  LockGraphNode node = new LockGraphNode(getLockName(key));
  nodes.add(node);
  map.put(key, node);
 }
 // Pre-populate all allowedPriorLocks with nodes of smaller ordinal.
 for (int i = 1; i < numKeys; i++) {
  nodes.get(i).checkAcquiredLocks(Policies.THROW, nodes.subList(0, i));
 }
 // Pre-populate all disallowedPriorLocks with nodes of larger ordinal.
 for (int i = 0; i < numKeys - 1; i++) {
  nodes.get(i).checkAcquiredLocks(Policies.DISABLED, nodes.subList(i + 1, numKeys));
 }
 return Collections.unmodifiableMap(map);
}

代码示例来源：origin: google/guava

public void testEnumMapNullClass() {
 try {
  Maps.<SomeEnum, Long>newEnumMap((Class<MapsTest.SomeEnum>) null);
  fail("no exception thrown");
 } catch (NullPointerException expected) {
 }
}

代码示例来源：origin: google/guava

public void testEnumMapWithInitialEmptyEnumMap() {
 EnumMap<SomeEnum, Integer> original = Maps.newEnumMap(SomeEnum.class);
 EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original);
 assertEquals(original, copy);
 assertNotSame(original, copy);
}

代码示例来源：origin: google/guava

public void testEnumMapWithInitialMap() {
 HashMap<SomeEnum, Integer> original = Maps.newHashMap();
 original.put(SomeEnum.SOME_INSTANCE, 0);
 EnumMap<SomeEnum, Integer> copy = Maps.newEnumMap(original);
 assertEquals(original, copy);
}

代码示例来源：origin: google/guava

public void testEnumMapWithInitialEmptyMap() {
 Map<SomeEnum, Integer> original = Maps.newHashMap();
 try {
  Maps.newEnumMap(original);
  fail("Empty map must result in an IllegalArgumentException");
 } catch (IllegalArgumentException expected) {
 }
}

代码示例来源：origin: googleapis/google-cloud-java

static Map<DnsRpc.Option, ?> optionMap(Option... options) {
  Map<DnsRpc.Option, Object> temp = Maps.newEnumMap(DnsRpc.Option.class);
  for (Option option : options) {
   Object prev = temp.put(option.getRpcOption(), option.getValue());
   checkArgument(prev == null, "Duplicate option %s", option);
  }
  return ImmutableMap.copyOf(temp);
 }
}

代码示例来源：origin: googleapis/google-cloud-java

@VisibleForTesting
 static Map<BigQueryRpc.Option, ?> optionMap(Option... options) {
  Map<BigQueryRpc.Option, Object> optionMap = Maps.newEnumMap(BigQueryRpc.Option.class);
  for (Option option : options) {
   Object prev = optionMap.put(option.getRpcOption(), option.getValue());
   checkArgument(prev == null, "Duplicate option %s", option);
  }
  return optionMap;
 }
}

代码示例来源：origin: googleapis/google-cloud-java

private Map<TranslateRpc.Option, ?> optionMap(Option... options) {
  Map<TranslateRpc.Option, Object> optionMap = Maps.newEnumMap(TranslateRpc.Option.class);
  for (Option option : options) {
   Object prev = optionMap.put(option.getRpcOption(), option.getValue());
   checkArgument(prev == null, "Duplicate option %s", option);
  }
  return optionMap;
 }
}

代码示例来源：origin: googleapis/google-cloud-java

static Map<SpannerRpc.Option, ?> optionMap(SessionOption... options) {
 if (options.length == 0) {
  return Collections.emptyMap();
 }
 Map<SpannerRpc.Option, Object> tmp = Maps.newEnumMap(SpannerRpc.Option.class);
 for (SessionOption option : options) {
  Object prev = tmp.put(option.rpcOption(), option.value());
  checkArgument(prev == null, "Duplicate option %s", option.rpcOption());
 }
 return ImmutableMap.copyOf(tmp);
}

代码示例来源：origin: google/guava

public void testEnumMap() {
 EnumMap<SomeEnum, Integer> map = Maps.newEnumMap(SomeEnum.class);
 assertEquals(Collections.emptyMap(), map);
 map.put(SomeEnum.SOME_INSTANCE, 0);
 assertEquals(Collections.singletonMap(SomeEnum.SOME_INSTANCE, 0), map);
}

代码示例来源：origin: google/guava

@GwtIncompatible // SerializableTester
public void testNewMultimapSerialization() {
 CountingSupplier<Queue<Integer>> factory = new QueueSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 Multimap<Color, Integer> multimap = Multimaps.newMultimap(map, factory);
 multimap.putAll(Color.BLUE, asList(3, 1, 4));
 multimap.putAll(Color.RED, asList(2, 7, 1, 8));
 SerializableTester.reserializeAndAssert(multimap);
}

代码示例来源：origin: google/guava

public void testNewMultimapValueCollectionMatchesNavigableSet() {
 Supplier<TreeSet<Integer>> factory = new SortedSetSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 Multimap<Color, Integer> multimap = Multimaps.newMultimap(map, factory);
 assertTrue(multimap.get(Color.BLUE) instanceof NavigableSet);
}

代码示例来源：origin: google/guava

public void testNewMultimapValueCollectionMatchesList() {
 Supplier<LinkedList<Integer>> factory = new ListSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 Multimap<Color, Integer> multimap = Multimaps.newMultimap(map, factory);
 assertTrue(multimap.get(Color.BLUE) instanceof List);
}

代码示例来源：origin: google/guava

Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
Multimap<Color, Integer> multimap = Multimaps.newMultimap(map, factory);
try {

代码示例来源：origin: google/guava

public void testNewMultimap() {
 // The ubiquitous EnumArrayBlockingQueueMultimap
 CountingSupplier<Queue<Integer>> factory = new QueueSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 Multimap<Color, Integer> multimap = Multimaps.newMultimap(map, factory);
 assertEquals(0, factory.count);
 multimap.putAll(Color.BLUE, asList(3, 1, 4));
 assertEquals(1, factory.count);
 multimap.putAll(Color.RED, asList(2, 7, 1, 8));
 assertEquals(2, factory.count);
 assertEquals("[3, 1, 4]", multimap.get(Color.BLUE).toString());
 Multimap<Color, Integer> ummodifiable = Multimaps.unmodifiableMultimap(multimap);
 assertEquals("[3, 1, 4]", ummodifiable.get(Color.BLUE).toString());
 Collection<Integer> collection = multimap.get(Color.BLUE);
 assertEquals(collection, collection);
 assertFalse(multimap.keySet() instanceof SortedSet);
 assertFalse(multimap.asMap() instanceof SortedMap);
}

代码示例来源：origin: google/guava

@GwtIncompatible // SerializableTester
public void testNewSortedSetMultimapSerialization() {
 CountingSupplier<TreeSet<Integer>> factory = new SortedSetSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 SortedSetMultimap<Color, Integer> multimap = Multimaps.newSortedSetMultimap(map, factory);
 multimap.putAll(Color.BLUE, asList(3, 1, 4));
 multimap.putAll(Color.RED, asList(2, 7, 1, 8));
 SerializableTester.reserializeAndAssert(multimap);
 assertEquals(INT_COMPARATOR, multimap.valueComparator());
}

代码示例来源：origin: google/guava

public void testNewSortedSetMultimap() {
 CountingSupplier<TreeSet<Integer>> factory = new SortedSetSupplier();
 Map<Color, Collection<Integer>> map = Maps.newEnumMap(Color.class);
 SortedSetMultimap<Color, Integer> multimap = Multimaps.newSortedSetMultimap(map, factory);
 // newSortedSetMultimap calls the factory once to determine the comparator.
 assertEquals(1, factory.count);
 multimap.putAll(Color.BLUE, asList(3, 1, 4));
 assertEquals(2, factory.count);
 multimap.putAll(Color.RED, asList(2, 7, 1, 8));
 assertEquals(3, factory.count);
 assertEquals("[4, 3, 1]", multimap.get(Color.BLUE).toString());
 assertEquals(INT_COMPARATOR, multimap.valueComparator());
}

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