java.util.NavigableMap#comparator ( )源码实例Demo

下面列出了java.util.NavigableMap#comparator ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： codebuff 文件： Maps.java

/**
 * Returns a view of the portion of {@code map} whose keys are contained by {@code range}.
 *
 * <p>This method delegates to the appropriate methods of {@link NavigableMap} (namely
 * {@link NavigableMap#subMap(Object, boolean, Object, boolean) subMap()},
 * {@link NavigableMap#tailMap(Object, boolean) tailMap()}, and
 * {@link NavigableMap#headMap(Object, boolean) headMap()}) to actually construct the view.
 * Consult these methods for a full description of the returned view's behavior.
 *
 * <p><b>Warning:</b> {@code Range}s always represent a range of values using the values' natural
 * ordering. {@code NavigableMap} on the other hand can specify a custom ordering via a
 * {@link Comparator}, which can violate the natural ordering. Using this method (or in general
 * using {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined
 * behavior.
 *
 * @since 20.0
 */

@Beta
@GwtIncompatible // NavigableMap
public static <K extends Comparable<? super K>, V> NavigableMap<K, V> subMap(NavigableMap<K, V> map, Range<K> range) {
  if (map.comparator() != null && map.comparator() != Ordering.natural()
      && range.hasLowerBound()
      && range.hasUpperBound()) {
    checkArgument(map.comparator().compare(range.lowerEndpoint(), range.upperEndpoint()) <= 0, "map is using a custom comparator which is inconsistent with the natural ordering.");
  }
  if (range.hasLowerBound() && range.hasUpperBound()) {
    return map.subMap(
      range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED,
      range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  } else if (range.hasLowerBound()) {
    return map.tailMap(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
  } else if (range.hasUpperBound()) {
    return map.headMap(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  }
  return checkNotNull(map);
}

源代码2 项目： codebuff 文件： Maps.java

/**
 * Returns a view of the portion of {@code map} whose keys are contained by {@code range}.
 *
 * <p>This method delegates to the appropriate methods of {@link NavigableMap} (namely
 * {@link NavigableMap#subMap(Object, boolean, Object, boolean) subMap()},
 * {@link NavigableMap#tailMap(Object, boolean) tailMap()}, and
 * {@link NavigableMap#headMap(Object, boolean) headMap()}) to actually construct the view.
 * Consult these methods for a full description of the returned view's behavior.
 *
 * <p><b>Warning:</b> {@code Range}s always represent a range of values using the values' natural
 * ordering. {@code NavigableMap} on the other hand can specify a custom ordering via a
 * {@link Comparator}, which can violate the natural ordering. Using this method (or in general
 * using {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined
 * behavior.
 *
 * @since 20.0
 */

@Beta
@GwtIncompatible // NavigableMap
public static <K extends Comparable<? super K>, V> NavigableMap<K, V> subMap(NavigableMap<K, V> map, Range<K> range) {
  if (map.comparator() != null && map.comparator() != Ordering.natural()
      && range.hasLowerBound()
      && range.hasUpperBound()) {
    checkArgument(map.comparator().compare(range.lowerEndpoint(), range.upperEndpoint()) <= 0, "map is using a custom comparator which is inconsistent with the natural ordering.");
  }
  if (range.hasLowerBound() && range.hasUpperBound()) {
    return map.subMap(
      range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED,
      range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  } else if (range.hasLowerBound()) {
    return map.tailMap(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
  } else if (range.hasUpperBound()) {
    return map.headMap(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  }
  return checkNotNull(map);
}

源代码3 项目： codebuff 文件： Maps.java

/**
 * Returns a view of the portion of {@code map} whose keys are contained by {@code range}.
 *
 * <p>This method delegates to the appropriate methods of {@link NavigableMap} (namely
 * {@link NavigableMap#subMap(Object, boolean, Object, boolean) subMap()},
 * {@link NavigableMap#tailMap(Object, boolean) tailMap()}, and
 * {@link NavigableMap#headMap(Object, boolean) headMap()}) to actually construct the view.
 * Consult these methods for a full description of the returned view's behavior.
 *
 * <p><b>Warning:</b> {@code Range}s always represent a range of values using the values' natural
 * ordering. {@code NavigableMap} on the other hand can specify a custom ordering via a
 * {@link Comparator}, which can violate the natural ordering. Using this method (or in general
 * using {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined
 * behavior.
 *
 * @since 20.0
 */

@Beta
@GwtIncompatible // NavigableMap
public static <K extends Comparable<? super K>, V> NavigableMap<K, V> subMap(NavigableMap<K, V> map, Range<K> range) {
  if (map.comparator() != null && map.comparator() != Ordering.natural()
      && range.hasLowerBound()
      && range.hasUpperBound()) {
    checkArgument(map.comparator().compare(range.lowerEndpoint(), range.upperEndpoint()) <= 0, "map is using a custom comparator which is inconsistent with the natural ordering.");
  }
  if (range.hasLowerBound() && range.hasUpperBound()) {
    return map.subMap(
      range.lowerEndpoint(),
      range.lowerBoundType() == BoundType.CLOSED,
      range.upperEndpoint(),
      range.upperBoundType() == BoundType.CLOSED);
  } else if (range.hasLowerBound()) {
    return map.tailMap(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
  } else if (range.hasUpperBound()) {
    return map.headMap(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  }
  return checkNotNull(map);
}

源代码4 项目： codebuff 文件： Maps.java

/**
 * Returns a view of the portion of {@code map} whose keys are contained by {@code range}.
 *
 * <p>This method delegates to the appropriate methods of {@link NavigableMap} (namely
 * {@link NavigableMap#subMap(Object, boolean, Object, boolean) subMap()},
 * {@link NavigableMap#tailMap(Object, boolean) tailMap()}, and
 * {@link NavigableMap#headMap(Object, boolean) headMap()}) to actually construct the view.
 * Consult these methods for a full description of the returned view's behavior.
 *
 * <p><b>Warning:</b> {@code Range}s always represent a range of values using the values' natural
 * ordering. {@code NavigableMap} on the other hand can specify a custom ordering via a
 * {@link Comparator}, which can violate the natural ordering. Using this method (or in general
 * using {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined
 * behavior.
 *
 * @since 20.0
 */

@Beta
@GwtIncompatible // NavigableMap
public static <K extends Comparable<? super K>, V> NavigableMap<K, V> subMap(NavigableMap<K, V> map, Range<K> range) {
  if (map.comparator() != null && map.comparator() != Ordering.natural()
      && range.hasLowerBound()
      && range.hasUpperBound()) {
    checkArgument(map.comparator().compare(range.lowerEndpoint(), range.upperEndpoint()) <= 0, "map is using a custom comparator which is inconsistent with the natural ordering.");
  }
  if (range.hasLowerBound() && range.hasUpperBound()) {
    return map.subMap(
      range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED,
      range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  } else if (range.hasLowerBound()) {
    return map.tailMap(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
  } else if (range.hasUpperBound()) {
    return map.headMap(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  }
  return checkNotNull(map);
}

源代码5 项目： codebuff 文件： Maps.java

/**
 * Returns a view of the portion of {@code map} whose keys are contained by {@code range}.
 *
 * <p>This method delegates to the appropriate methods of {@link NavigableMap} (namely
 * {@link NavigableMap#subMap(Object, boolean, Object, boolean) subMap()},
 * {@link NavigableMap#tailMap(Object, boolean) tailMap()}, and
 * {@link NavigableMap#headMap(Object, boolean) headMap()}) to actually construct the view.
 * Consult these methods for a full description of the returned view's behavior.
 *
 * <p><b>Warning:</b> {@code Range}s always represent a range of values using the values' natural
 * ordering. {@code NavigableMap} on the other hand can specify a custom ordering via a
 * {@link Comparator}, which can violate the natural ordering. Using this method (or in general
 * using {@code Range}) with unnaturally-ordered maps can lead to unexpected and undefined
 * behavior.
 *
 * @since 20.0
 */
@Beta
@GwtIncompatible // NavigableMap
public static <K extends Comparable<? super K>, V> NavigableMap<K, V> subMap(
    NavigableMap<K, V> map, Range<K> range) {
  if (map.comparator() != null
      && map.comparator() != Ordering.natural()
      && range.hasLowerBound()
      && range.hasUpperBound()) {
    checkArgument(
        map.comparator().compare(range.lowerEndpoint(), range.upperEndpoint()) <= 0,
        "map is using a custom comparator which is inconsistent with the natural ordering.");
  }
  if (range.hasLowerBound() && range.hasUpperBound()) {
    return map.subMap(
        range.lowerEndpoint(),
        range.lowerBoundType() == BoundType.CLOSED,
        range.upperEndpoint(),
        range.upperBoundType() == BoundType.CLOSED);
  } else if (range.hasLowerBound()) {
    return map.tailMap(range.lowerEndpoint(), range.lowerBoundType() == BoundType.CLOSED);
  } else if (range.hasUpperBound()) {
    return map.headMap(range.upperEndpoint(), range.upperBoundType() == BoundType.CLOSED);
  }
  return checkNotNull(map);
}

源代码6 项目： dragonwell8_jdk 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码7 项目： TencentKona-8 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码8 项目： jdk8u60 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码9 项目： openjdk-jdk8u 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码10 项目： openjdk-jdk8u-backup 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码11 项目： openjdk-jdk9 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码12 项目： jdk8u-jdk 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码13 项目： hottub 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码14 项目： openjdk-8-source 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码15 项目： openjdk-8 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码16 项目： jdk8u_jdk 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码17 项目： jdk8u-jdk 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}

源代码18 项目： jdk8u-dev-jdk 文件： EmptyNavigableMap.java

/**
 * Tests that the comparator is {@code null}.
 */
@Test(dataProvider = "NavigableMap<?,?>", dataProviderClass = EmptyNavigableMap.class)
public void testComparatorIsNull(String description, NavigableMap<?,?> navigableMap) {
    Comparator comparator = navigableMap.comparator();

    assertTrue(comparator == null || comparator == Collections.reverseOrder(), description + ": Comparator (" + comparator + ") is not null.");
}