org.apache.spark.api.java.Optional.get()方法的使用及代码示例

x33g5p2x  于2022-01-26 转载在 其他  
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本文整理了Java中org.apache.spark.api.java.Optional.get()方法的一些代码示例，展示了Optional.get()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。Optional.get()方法的具体详情如下：
包路径：org.apache.spark.api.java.Optional
类名称：Optional
方法名：get

Optional.get介绍

暂无

代码示例

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

@Test(expected = NullPointerException.class)
public void testEmptyGet() {
 Optional.empty().get();
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test(expected = NullPointerException.class)
public void testEmptyGet() {
 Optional.empty().get();
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test(expected = NullPointerException.class)
public void testAbsentGet() {
 Optional.absent().get();
}

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

@Test(expected = NullPointerException.class)
public void testAbsentGet() {
 Optional.absent().get();
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test(expected = NullPointerException.class)
public void testAbsentGet() {
 Optional.absent().get();
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test(expected = NullPointerException.class)
public void testEmptyGet() {
 Optional.empty().get();
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

rdd.repartitionAndSortWithinPartitions(partitioner);
assertTrue(repartitioned.partitioner().isPresent());
assertEquals(repartitioned.partitioner().get(), partitioner);
List<List<Tuple2<Integer, Integer>>> partitions = repartitioned.glom().collect();
assertEquals(partitions.get(0),

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

rdd.repartitionAndSortWithinPartitions(partitioner);
assertTrue(repartitioned.partitioner().isPresent());
assertEquals(repartitioned.partitioner().get(), partitioner);
List<List<Tuple2<Integer, Integer>>> partitions = repartitioned.glom().collect();
assertEquals(partitions.get(0),

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test
public void testOf() {
 Assert.assertTrue(Optional.of(1).isPresent());
 Assert.assertNotNull(Optional.of(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).orElse(2));
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test
public void testOf() {
 Assert.assertTrue(Optional.of(1).isPresent());
 Assert.assertNotNull(Optional.of(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).orElse(2));
}

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

@Test
public void testOf() {
 Assert.assertTrue(Optional.of(1).isPresent());
 Assert.assertNotNull(Optional.of(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.of(1).orElse(2));
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test
public void checkpointAndRestore() {
 JavaRDD<Integer> rdd = sc.parallelize(Arrays.asList(1, 2, 3, 4, 5));
 sc.setCheckpointDir(tempDir.getAbsolutePath());
 assertFalse(rdd.isCheckpointed());
 rdd.checkpoint();
 rdd.count(); // Forces the DAG to cause a checkpoint
 assertTrue(rdd.isCheckpointed());
 assertTrue(rdd.getCheckpointFile().isPresent());
 JavaRDD<Integer> recovered = sc.checkpointFile(rdd.getCheckpointFile().get());
 assertEquals(Arrays.asList(1, 2, 3, 4, 5), recovered.collect());
}

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

@Test
public void checkpointAndRestore() {
 JavaRDD<Integer> rdd = sc.parallelize(Arrays.asList(1, 2, 3, 4, 5));
 sc.setCheckpointDir(tempDir.getAbsolutePath());
 assertFalse(rdd.isCheckpointed());
 rdd.checkpoint();
 rdd.count(); // Forces the DAG to cause a checkpoint
 assertTrue(rdd.isCheckpointed());
 assertTrue(rdd.getCheckpointFile().isPresent());
 JavaRDD<Integer> recovered = sc.checkpointFile(rdd.getCheckpointFile().get());
 assertEquals(Arrays.asList(1, 2, 3, 4, 5), recovered.collect());
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test
public void checkpointAndRestore() {
 JavaRDD<Integer> rdd = sc.parallelize(Arrays.asList(1, 2, 3, 4, 5));
 sc.setCheckpointDir(tempDir.getAbsolutePath());
 assertFalse(rdd.isCheckpointed());
 rdd.checkpoint();
 rdd.count(); // Forces the DAG to cause a checkpoint
 assertTrue(rdd.isCheckpointed());
 assertTrue(rdd.getCheckpointFile().isPresent());
 JavaRDD<Integer> recovered = sc.checkpointFile(rdd.getCheckpointFile().get());
 assertEquals(Arrays.asList(1, 2, 3, 4, 5), recovered.collect());
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test
public void testOfNullable() {
 Assert.assertTrue(Optional.ofNullable(1).isPresent());
 Assert.assertNotNull(Optional.ofNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).orElse(2));
 Assert.assertFalse(Optional.ofNullable(null).isPresent());
 Assert.assertNull(Optional.ofNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).orElse(2));
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test
public void testOfNullable() {
 Assert.assertTrue(Optional.ofNullable(1).isPresent());
 Assert.assertNotNull(Optional.ofNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).orElse(2));
 Assert.assertFalse(Optional.ofNullable(null).isPresent());
 Assert.assertNull(Optional.ofNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).orElse(2));
}

代码示例来源：origin: org.apache.spark/spark-core_2.11

@Test
public void testFromNullable() {
 Assert.assertTrue(Optional.fromNullable(1).isPresent());
 Assert.assertNotNull(Optional.fromNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).orElse(2));
 Assert.assertFalse(Optional.fromNullable(null).isPresent());
 Assert.assertNull(Optional.fromNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).orElse(2));
}

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

@Test
public void testFromNullable() {
 Assert.assertTrue(Optional.fromNullable(1).isPresent());
 Assert.assertNotNull(Optional.fromNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).orElse(2));
 Assert.assertFalse(Optional.fromNullable(null).isPresent());
 Assert.assertNull(Optional.fromNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).orElse(2));
}

代码示例来源：origin: org.apache.spark/spark-core_2.10

@Test
public void testFromNullable() {
 Assert.assertTrue(Optional.fromNullable(1).isPresent());
 Assert.assertNotNull(Optional.fromNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.fromNullable(1).orElse(2));
 Assert.assertFalse(Optional.fromNullable(null).isPresent());
 Assert.assertNull(Optional.fromNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>fromNullable(null).orElse(2));
}

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

@Test
public void testOfNullable() {
 Assert.assertTrue(Optional.ofNullable(1).isPresent());
 Assert.assertNotNull(Optional.ofNullable(1).orNull());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).get());
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).or(2));
 Assert.assertEquals(Integer.valueOf(1), Optional.ofNullable(1).orElse(2));
 Assert.assertFalse(Optional.ofNullable(null).isPresent());
 Assert.assertNull(Optional.ofNullable(null).orNull());
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).or(2));
 Assert.assertEquals(Integer.valueOf(2), Optional.<Integer>ofNullable(null).orElse(2));
}

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