本文整理了Java中org.apache.calcite.util.Util.distinctList()方法的一些代码示例，展示了Util.distinctList()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。Util.distinctList()方法的具体详情如下：
包路径：org.apache.calcite.util.Util
类名称：Util
方法名：distinctList

Util.distinctList介绍

[英]Converts an iterable into a list with unique elements.

The order is preserved; the second and subsequent occurrences are removed.

If iterable is a unique list it is returned unchanged.
[中]将iterable转换为具有唯一元素的列表。
秩序得以维持；将删除第二个和后续的引用。
如果iterable是一个唯一的列表，那么它将原封不动地返回。

代码示例

代码示例来源：origin: Qihoo360/Quicksql

/** Returns whether one of a list of collations indicates that the collection
 * is sorted on the given list of keys. */
public static boolean contains(List<RelCollation> collations,
  ImmutableIntList keys) {
 final List<Integer> distinctKeys = Util.distinctList(keys);
 for (RelCollation collation : collations) {
  if (contains(collation, distinctKeys)) {
   return true;
  }
 }
 return false;
}

代码示例来源：origin: Qihoo360/Quicksql

/** Returns whether a collation indicates that the collection is sorted on
 * a given list of keys.
 *
 * @param collation Collation
 * @param keys List of keys
 * @return Whether the collection is sorted on the given keys
 */
public static boolean contains(RelCollation collation,
  Iterable<Integer> keys) {
 return contains(collation, Util.distinctList(keys));
}

代码示例来源：origin: org.apache.calcite/calcite-core

/** Returns whether one of a list of collations indicates that the collection
 * is sorted on the given list of keys. */
public static boolean contains(List<RelCollation> collations,
  ImmutableIntList keys) {
 final List<Integer> distinctKeys = Util.distinctList(keys);
 for (RelCollation collation : collations) {
  if (contains(collation, distinctKeys)) {
   return true;
  }
 }
 return false;
}

代码示例来源：origin: org.apache.calcite/calcite-core

/** Returns whether a collation indicates that the collection is sorted on
 * a given list of keys.
 *
 * @param collation Collation
 * @param keys List of keys
 * @return Whether the collection is sorted on the given keys
 */
public static boolean contains(RelCollation collation,
  Iterable<Integer> keys) {
 return contains(collation, Util.distinctList(keys));
}

代码示例来源：origin: Qihoo360/Quicksql

/** Unit test for {@link Util#distinctList(List)}
 * and {@link Util#distinctList(Iterable)}. */
@Test public void testDistinctList() {
 assertThat(Util.distinctList(Arrays.asList(1, 2)), is(Arrays.asList(1, 2)));
 assertThat(Util.distinctList(Arrays.asList(1, 2, 1)),
   is(Arrays.asList(1, 2)));
 try {
  List<Object> o = Util.distinctList(null);
  fail("expected exception, got " + o);
 } catch (NullPointerException ignore) {
 }
 final List<Integer> empty = ImmutableList.of();
 assertThat(Util.distinctList(empty), sameInstance(empty));
 final Iterable<Integer> emptyIterable = empty;
 assertThat(Util.distinctList(emptyIterable), sameInstance(emptyIterable));
 final List<Integer> empty2 = ImmutableList.of();
 assertThat(Util.distinctList(empty2), sameInstance(empty2));
 final List<String> abc = ImmutableList.of("a", "b", "c");
 assertThat(Util.distinctList(abc), sameInstance(abc));
 final List<String> a = ImmutableList.of("a");
 assertThat(Util.distinctList(a), sameInstance(a));
 final List<String> cbca = ImmutableList.of("c", "b", "c", "a");
 assertThat(Util.distinctList(cbca), not(sameInstance(cbca)));
 assertThat(Util.distinctList(cbca), is(Arrays.asList("c", "b", "a")));
 final Collection<String> cbcaC = new LinkedHashSet<>(cbca);
 assertThat(Util.distinctList(cbcaC), not(sameInstance(cbca)));
 assertThat(Util.distinctList(cbcaC), is(Arrays.asList("c", "b", "a")));
}

代码示例来源：origin: org.apache.calcite/calcite-core

/** Unit test for {@link Util#distinctList(List)}
 * and {@link Util#distinctList(Iterable)}. */
@Test public void testDistinctList() {
 assertThat(Util.distinctList(Arrays.asList(1, 2)), is(Arrays.asList(1, 2)));
 assertThat(Util.distinctList(Arrays.asList(1, 2, 1)),
   is(Arrays.asList(1, 2)));
 try {
  List<Object> o = Util.distinctList(null);
  fail("expected exception, got " + o);
 } catch (NullPointerException ignore) {
 }
 final List<Integer> empty = ImmutableList.of();
 assertThat(Util.distinctList(empty), sameInstance(empty));
 final Iterable<Integer> emptyIterable = empty;
 assertThat(Util.distinctList(emptyIterable), sameInstance(emptyIterable));
 final List<Integer> empty2 = ImmutableList.of();
 assertThat(Util.distinctList(empty2), sameInstance(empty2));
 final List<String> abc = ImmutableList.of("a", "b", "c");
 assertThat(Util.distinctList(abc), sameInstance(abc));
 final List<String> a = ImmutableList.of("a");
 assertThat(Util.distinctList(a), sameInstance(a));
 final List<String> cbca = ImmutableList.of("c", "b", "c", "a");
 assertThat(Util.distinctList(cbca), not(sameInstance(cbca)));
 assertThat(Util.distinctList(cbca), is(Arrays.asList("c", "b", "a")));
 final Collection<String> cbcaC = new LinkedHashSet<>(cbca);
 assertThat(Util.distinctList(cbcaC), not(sameInstance(cbca)));
 assertThat(Util.distinctList(cbcaC), is(Arrays.asList("c", "b", "a")));
}