本文整理了Java中com.apollographql.apollo.api.internal.Optional.of()方法的一些代码示例，展示了Optional.of()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.of()方法的具体详情如下：
包路径：com.apollographql.apollo.api.internal.Optional
类名称：Optional
方法名：of

Optional.of介绍

[英]Returns an Optional instance containing the given non-null reference. To have null treated as #absent, use #fromNullable instead.

Comparison to java.util.Optional: no differences.
[中]返回包含给定非空引用的可选实例。要将null视为#缺席，请改用#fromNullable。
与java的比较。util。可选：无差异。

代码示例

代码示例来源：origin: apollographql/apollo-android

public EvictionPolicy.Builder maxSizeBytes(long maxSizeBytes) {
 this.maxSizeBytes = Optional.of(maxSizeBytes);
 return this;
}

代码示例来源：origin: apollographql/apollo-android

public EvictionPolicy.Builder expireAfterAccess(long time, TimeUnit timeUnit) {
 this.expireAfterAccess = Optional.of(time);
 this.expireAfterAccessTimeUnit = Optional.of(timeUnit);
 return this;
}

代码示例来源：origin: apollographql/apollo-android

public EvictionPolicy.Builder expireAfterWrite(long time, TimeUnit timeUnit) {
 this.expireAfterWrite = Optional.of(time);
 this.expireAfterWriteTimeUnit = Optional.of(timeUnit);
 return this;
}

代码示例来源：origin: apollographql/apollo-android

public EvictionPolicy.Builder maxEntries(long maxEntries) {
 this.maxEntries = Optional.of(maxEntries);
 return this;
}

代码示例来源：origin: apollographql/apollo-android

/**
 * <p>Sets up subscription transport factory to be used for subscription server communication.<p/> See also: {@link
 * com.apollographql.apollo.subscription.WebSocketSubscriptionTransport}
 *
 * @param subscriptionTransportFactory transport layer to be used for subscriptions.
 * @return The {@link Builder} object to be used for chaining method calls
 */
public Builder subscriptionTransportFactory(@NotNull SubscriptionTransport.Factory subscriptionTransportFactory) {
 this.subscriptionTransportFactory = Optional.of(checkNotNull(subscriptionTransportFactory,
   "subscriptionTransportFactory is null"));
 return this;
}

代码示例来源：origin: apollographql/apollo-android

/**
 * <p>Sets up subscription connection parameters to be sent to the server when connection is established with
 * subscription server</p>
 *
 * @param subscriptionConnectionParams map of connection parameters to be sent
 * @return The {@link Builder} object to be used for chaining method calls
 */
public Builder subscriptionConnectionParams(@NotNull Map<String, Object> subscriptionConnectionParams) {
 this.subscriptionConnectionParams = Optional.of(checkNotNull(subscriptionConnectionParams,
   "subscriptionConnectionParams is null"));
 return this;
}

代码示例来源：origin: apollographql/apollo-android

public final NormalizedCacheFactory<T> chain(@NotNull NormalizedCacheFactory factory) {
  checkNotNull(factory, "factory == null");

  NormalizedCacheFactory leafFactory = this;
  while (leafFactory.nextFactory.isPresent()) {
   leafFactory = (NormalizedCacheFactory) leafFactory.nextFactory.get();
  }
  leafFactory.nextFactory = Optional.of(factory);

  return this;
 }
}

代码示例来源：origin: apollographql/apollo-android

@NotNull @Override public Optional<String> apply(@NotNull Integer integer) {
  return Optional.of(integer.toString());
 }
}));

代码示例来源：origin: apollographql/apollo-android

public final NormalizedCache chain(@NotNull NormalizedCache cache) {
 checkNotNull(cache, "cache == null");
 NormalizedCache leafCache = this;
 while (leafCache.nextCache.isPresent()) {
  leafCache = leafCache.nextCache.get();
 }
 leafCache.nextCache = Optional.of(cache);
 return this;
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testOrOptionalPresent() {
 assertEquals(Optional.of("a"), Optional.of("a").or(Optional.of("fallback")));
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testEqualsAndHashCodePresent() {
 assertEquals(Optional.of("training"), Optional.of("training"));
 assertFalse(Optional.of("a").equals(Optional.of("b")));
 assertFalse(Optional.of("a").equals(Optional.absent()));
 assertEquals(Optional.of("training").hashCode(), Optional.of("training").hashCode());
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testFlatMapMapPresentIdentity() {
 assertEquals(Optional.of("a"), Optional.of("a").flatMap(new Function<String, Optional<String>>() {
    @NotNull @Override public Optional<String> apply(@NotNull String s) {
     return Optional.of(s);
    }
   })
 );
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testFlatMapPresentToString() {
 assertEquals(Optional.of("42"), Optional.of(42).flatMap(new Function<Integer, Optional<String>>() {
  @NotNull @Override public Optional<String> apply(@NotNull Integer integer) {
   return Optional.of(integer.toString());
  }
 }));
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testMapPresentToString() {
 assertEquals(Optional.of("42"), Optional.of(42).map(Functions.toStringFunction()));
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testOfNull() {
 try {
  Optional.of(null);
  fail();
 } catch (NullPointerException ignore) {
 }
}

代码示例来源：origin: apollographql/apollo-android

@SuppressWarnings("unused") // compilation test
@Test
public void testSampleCodeFine1() {
 Optional<Number> optionalInt = Optional.of((Number) 1);
 Number value = optionalInt.or(0.5); // fine
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testAsSetPresent() {
 Set<String> expected = Collections.singleton("a");
 assertEquals(expected, Optional.of("a").asSet());
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testAsSetPresentIsImmutable() {
 Set<String> presentAsSet = Optional.of("a").asSet();
 try {
  presentAsSet.add("b");
  fail();
 } catch (UnsupportedOperationException ignore) {
 }
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testFlatMapPresentFunctionReturnsNull() {
 try {
  Optional<String> unused = Optional.of("a").flatMap(new Function<String, Optional<String>>() {
   @NotNull @Override public Optional<String> apply(@NotNull String s) {
    return null;
   }
  });
  fail("Should throw if Function returns null.");
 } catch (NullPointerException expected) {
 }
}

代码示例来源：origin: apollographql/apollo-android

@Test
public void testEqualsAndHashCodeAbsent() {
 assertEquals(Optional.<String>absent(), Optional.<Integer>absent());
 assertEquals(Optional.absent().hashCode(), Optional.absent().hashCode());
 assertThat(Optional.absent().hashCode())
   .isNotEqualTo(Optional.of(0).hashCode());
}