org.apache.spark.api.java.Optional.orElse()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.orElse()方法的一些代码示例，展示了Optional.orElse()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.orElse()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：orElse

Optional.orElse介绍

暂无

代码示例

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));
}

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_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

@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_2.10

@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 testEmpty() {
 Assert.assertFalse(Optional.empty().isPresent());
 Assert.assertNull(Optional.empty().orNull());
 Assert.assertEquals("foo", Optional.empty().or("foo"));
 Assert.assertEquals("foo", Optional.empty().orElse("foo"));
}

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

@Test
public void testEmpty() {
 Assert.assertFalse(Optional.empty().isPresent());
 Assert.assertNull(Optional.empty().orNull());
 Assert.assertEquals("foo", Optional.empty().or("foo"));
 Assert.assertEquals("foo", Optional.empty().orElse("foo"));
}

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

@Test
public void testEmpty() {
 Assert.assertFalse(Optional.empty().isPresent());
 Assert.assertNull(Optional.empty().orNull());
 Assert.assertEquals("foo", Optional.empty().or("foo"));
 Assert.assertEquals("foo", Optional.empty().orElse("foo"));
}

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

@Test
public void testAbsent() {
 Assert.assertFalse(Optional.absent().isPresent());
 Assert.assertNull(Optional.absent().orNull());
 Assert.assertEquals("foo", Optional.absent().or("foo"));
 Assert.assertEquals("foo", Optional.absent().orElse("foo"));
}

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

@Test
public void testAbsent() {
 Assert.assertFalse(Optional.absent().isPresent());
 Assert.assertNull(Optional.absent().orNull());
 Assert.assertEquals("foo", Optional.absent().or("foo"));
 Assert.assertEquals("foo", Optional.absent().orElse("foo"));
}

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

@Test
public void testAbsent() {
 Assert.assertFalse(Optional.absent().isPresent());
 Assert.assertNull(Optional.absent().orNull());
 Assert.assertEquals("foo", Optional.absent().or("foo"));
 Assert.assertEquals("foo", Optional.absent().orElse("foo"));
}

代码示例来源：origin: org.apache.spark/spark-streaming_2.11

int sum = value.orElse(0) + (state.exists() ? state.get() : 0);
state.update(sum);
return sum;

代码示例来源：origin: org.apache.spark/spark-streaming_2.10

int sum = value.orElse(0) + (state.exists() ? state.get() : 0);
state.update(sum);
return sum;

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