com.google.cloud.Timestamp.now()方法的使用及代码示例

x33g5p2x  于2022-01-30 转载在 其他  
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本文整理了Java中com.google.cloud.Timestamp.now()方法的一些代码示例，展示了Timestamp.now()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。Timestamp.now()方法的具体详情如下：
包路径：com.google.cloud.Timestamp
类名称：Timestamp
方法名：now

Timestamp.now介绍

[英]Creates an instance with current time.
[中]使用当前时间创建实例。

代码示例

代码示例来源：origin: googleapis/google-cloud-java

/**
 * Returns the current count of all documents, including the changes from the current changeMap.
 */
private int currentSize() {
 ChangeSet changeSet = extractChanges(Timestamp.now());
 return documentSet.size() + changeSet.adds.size() - changeSet.deletes.size();
}

代码示例来源：origin: google/data-transfer-project

private Entity createEntity(Key key, Map<String, Object> data) throws IOException {
 Entity.Builder builder = Entity.newBuilder(key).set(CREATED_FIELD, Timestamp.now());
 for (Entry<String, Object> entry : data.entrySet()) {
  if (entry.getValue() instanceof String) {
   builder.set(entry.getKey(), (String) entry.getValue()); // StringValue
  } else if (entry.getValue() instanceof Integer) {
   builder.set(entry.getKey(), (Integer) entry.getValue()); // LongValue
  } else if (entry.getValue() instanceof Double) {
   builder.set(entry.getKey(), (Double) entry.getValue()); // DoubleValue
  } else if (entry.getValue() instanceof Boolean) {
   builder.set(entry.getKey(), (Boolean) entry.getValue()); // BooleanValue
  } else if (entry.getValue() instanceof Timestamp) {
   builder.set(entry.getKey(), (Timestamp) entry.getValue()); // TimestampValue
  } else {
   ByteArrayOutputStream bos = new ByteArrayOutputStream();
   try (ObjectOutputStream out = new ObjectOutputStream(bos)) {
    out.writeObject(entry.getValue());
   }
   builder.set(entry.getKey(), Blob.copyFrom(bos.toByteArray())); // BlobValue
  }
 }
 return builder.build();
}

代码示例来源：origin: google/data-transfer-project

@Override
public <T extends DataModel> void create(UUID jobId, String key, T model) throws IOException {
 Preconditions.checkNotNull(jobId);
 Transaction transaction = datastore.newTransaction();
 Key fullKey = getDataKey(jobId, key);
 Entity shouldNotExist = transaction.get(fullKey);
 if (shouldNotExist != null) {
  transaction.rollback();
  throw new IOException(
    "Record already exists for key: " + fullKey.getName() + ". Record: " + shouldNotExist);
 }
 String serialized = objectMapper.writeValueAsString(model);
 Entity entity = Entity.newBuilder(fullKey)
   .set(CREATED_FIELD, Timestamp.now())
   .set(model.getClass().getName(), serialized)
   .build();
 try {
  transaction.put(entity);
 } catch (DatastoreException e) {
  throw new IOException(
    "Could not create initial record for jobID: " + jobId + ". Record: " + entity, e);
 }
 transaction.commit();
}

代码示例来源：origin: google/data-transfer-project

@Override
public <T extends DataModel> void update(UUID jobId, String key, T model) {
 Transaction transaction = datastore.newTransaction();
 Key entityKey = getDataKey(jobId, key);
 try {
  Entity previousEntity = transaction.get(entityKey);
  if (previousEntity == null) {
   throw new IOException("Could not find record for data key: " + entityKey.getName());
  }
  String serialized = objectMapper.writeValueAsString(model);
  Entity entity = Entity.newBuilder(entityKey)
    .set(CREATED_FIELD, Timestamp.now())
    .set(model.getClass().getName(), serialized)
    .build();
  transaction.put(entity);
  transaction.commit();
 } catch (IOException t) {
  transaction.rollback();
  throw new RuntimeException("Failed atomic update of key: " + key, t);
 }
}

代码示例来源：origin: googleapis/google-cloud-java

public static void main(String... args) {
  Datastore datastore = DatastoreOptions.getDefaultInstance().getService();
  KeyFactory keyFactory = datastore.newKeyFactory().setKind("keyKind");
  Key key = keyFactory.newKey("keyName");
  Entity entity = datastore.get(key);
  if (entity != null) {
   System.out.println("Updating access_time for " + entity.getString("name"));
   entity = Entity.newBuilder(entity).set("access_time", Timestamp.now()).build();
   datastore.update(entity);
  }
 }
}

代码示例来源：origin: googleapis/google-cloud-java

@Test
public void serialization() throws Exception {
 reserializeAndAssert(TimestampBound.strong());
 reserializeAndAssert(TimestampBound.ofExactStaleness(10, TimeUnit.NANOSECONDS));
 reserializeAndAssert(TimestampBound.ofMaxStaleness(100, TimeUnit.DAYS));
 reserializeAndAssert(TimestampBound.ofMinReadTimestamp(Timestamp.now()));
 reserializeAndAssert(TimestampBound.ofReadTimestamp(Timestamp.now()));
}

代码示例来源：origin: googleapis/google-cloud-java

public static void main(String... args) {
  Datastore datastore = DatastoreOptions.getDefaultInstance().getService();
  KeyFactory keyFactory = datastore.newKeyFactory().setKind("keyKind");
  Key key = keyFactory.newKey("keyName");
  Entity entity =
    Entity.newBuilder(key)
      .set("name", "John Doe")
      .set("age", 30)
      .set("access_time", Timestamp.now())
      .build();
  datastore.put(entity);
 }
}

代码示例来源：origin: googleapis/google-cloud-java

@Override
public void run(Transaction tx, Key userKey, String content) {
 Entity user = tx.get(userKey);
 if (user == null) {
  System.out.println("Adding a new user.");
  user = Entity.newBuilder(userKey).set("count", 1).build();
  tx.add(user);
 } else {
  user = Entity.newBuilder(user).set("count", user.getLong("count") + 1L).build();
  tx.update(user);
 }
 IncompleteKey commentKey = IncompleteKey.newBuilder(userKey, COMMENT_KIND).build();
 FullEntity<IncompleteKey> comment =
   FullEntity.newBuilder(commentKey)
     .set("content", content)
     .set("timestamp", Timestamp.now())
     .build();
 tx.addWithDeferredIdAllocation(comment);
 System.out.printf("Adding a comment to user '%s'.%n", userKey.getName());
}

代码示例来源：origin: googleapis/google-cloud-java

@Before
public void setUp() {
 builder = new Builder();
 builder.set("blob", BLOB).set("boolean", true).set("timestamp", TIMESTAMP);
 builder.set("double", 1.25).set("key", KEY).set("string", "hello world");
 builder.set("long", 125).setNull("null").set("entity", ENTITY).set("latLng", LAT_LNG);
 builder.set("partialEntity", PARTIAL_ENTITY).set("stringValue", StringValue.of("bla"));
 builder.set("list1", NullValue.of(), StringValue.of("foo"), LatLngValue.of(LAT_LNG));
 builder.set("list2", ImmutableList.of(LongValue.of(10), DoubleValue.of(2)));
 builder.set("list3", Collections.singletonList(BooleanValue.of(true)));
 builder.set(
   "blobList", BLOB, Blob.copyFrom(new byte[] {3, 4}), Blob.copyFrom(new byte[] {5, 6}));
 builder.set("booleanList", true, false, true);
 builder.set("timestampList", Timestamp.now(), Timestamp.now(), Timestamp.now());
 builder.set("doubleList", 12.3, 4.56, .789);
 builder.set(
   "keyList",
   KEY,
   Key.newBuilder("ds2", "k2", "n2").build(),
   Key.newBuilder("ds3", "k3", "n3").build());
 builder.set("entityList", ENTITY, PARTIAL_ENTITY);
 builder.set("stringList", "s1", "s2", "s3");
 builder.set("longList", 1, 23, 456);
 builder.set("latLngList", LAT_LNG, LAT_LNG);
}

代码示例来源：origin: googleapis/google-cloud-java

tester.addEqualityGroup(
  Value.timestamp(Value.COMMIT_TIMESTAMP), Value.timestamp(Value.COMMIT_TIMESTAMP));
Timestamp now = Timestamp.now();
tester.addEqualityGroup(Value.timestamp(now), Value.timestamp(now));
tester.addEqualityGroup(Value.timestamp(Timestamp.ofTimeMicroseconds(0)));

代码示例来源：origin: googleapis/google-cloud-java

reserializeAndAssert(Value.timestamp(Timestamp.now()));
reserializeAndAssert(Value.timestampArray(Arrays.asList(null, Timestamp.now())));

代码示例来源：origin: GoogleCloudPlatform/java-docs-samples

/**
 * Adds a task entity to the Datastore.
 *
 * @param description The task description
 * @return The {@link Key} of the entity
 * @throws DatastoreException if the ID allocation or put fails
 */
Key addTask(String description) {
 Key key = datastore.allocateId(keyFactory.newKey());
 Entity task = Entity.newBuilder(key)
   .set("description", StringValue.newBuilder(description).setExcludeFromIndexes(true).build())
   .set("created", Timestamp.now())
   .set("done", false)
   .build();
 datastore.put(task);
 return key;
}
// [END datastore_add_entity]

代码示例来源：origin: com.google.cloud/google-cloud-firestore

/**
 * Returns the current count of all documents, including the changes from the current changeMap.
 */
private int currentSize() {
 ChangeSet changeSet = extractChanges(Timestamp.now());
 return documentSet.size() + changeSet.adds.size() - changeSet.deletes.size();
}

代码示例来源：origin: GoogleCloudPlatform/java-docs-samples

final Timestamp timestamp = Timestamp.now();

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-google-cloud-platform

.withInstanceId("123")
.withDatabaseId("aaa")
.withTimestamp(Timestamp.now())
.withTable("users")
.withColumns("id", "name")

代码示例来源：origin: org.apache.beam/beam-sdks-java-io-google-cloud-platform

@Test
public void dates() throws Exception {
 Mutation timestamp =
   Mutation.newInsertOrUpdateBuilder("test").set("one").to(Timestamp.now()).build();
 Mutation nullTimestamp =
   Mutation.newInsertOrUpdateBuilder("test").set("one").to((Timestamp) null).build();
   Mutation.newInsertOrUpdateBuilder("test")
     .set("one")
     .toTimestampArray(Arrays.asList(Timestamp.now(), null))
     .build();
 Mutation dateArray =

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