本文整理了Java中com.google.appengine.api.datastore.Entity.getKey()方法的一些代码示例，展示了Entity.getKey()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。Entity.getKey()方法的具体详情如下：
包路径：com.google.appengine.api.datastore.Entity
类名称：Entity
方法名：getKey

Entity.getKey介绍

暂无

代码示例

代码示例来源：origin: stackoverflow.com

Query query = new Query(Entities.KIND_METADATA_KIND);
DatastoreService datastoreService = DatastoreServiceFactory.getDatastoreService();

Iterable<Entity> entityIterable = datastoreService.prepare(query).asIterable();

for(Entity entity : entityIterable) {
  System.out.println("Entity kind: " + entity.getKey().getName());
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

/**
 * @throws java.util.NoSuchElementException if there are no more elements to resolve.
 */
void resolveNext() {
 Entity entity = lazyEntityIterator.next();
 resolvedPojos.add(entityTransformer.apply(entity));
 if (resultKeys != null) {
  resultKeys.add(entity.getKey());
 }
}

代码示例来源：origin: org.vesalainen.dsql/dsql

@Override
public void delete(Entity row)
{
  datastore.delete(row.getKey());
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

void addPutEntities(List<Entity> entities) {
 for (Entity entity : entities) {
  // Make a copy in case someone changes
  // the provided entity after we add it to our cache.
  putEntities.put(entity.getKey(), makeCopy(entity));
 }
}

代码示例来源：origin: org.vesalainen.dsql/dsql

@Override
public void delete(Collection<Entity> rows)
{
  List<Key> keys = new ArrayList<>();
  for (Entity entity : rows)
  {
    keys.add(entity.getKey());
  }
  datastore.delete(keys);
}

代码示例来源：origin: com.google.appengine.orm/datanucleus-appengine

public Object fetchObjectField(int fieldNumber) {
 AbstractMemberMetaData ammd = cmd.getMetaDataForManagedMemberAtAbsolutePosition(fieldNumber);
 if (isPK(fieldNumber)) {
  if (ammd.getType().equals(Key.class)) {
   // If this is a pk field, transform the Key into its String representation.
   return datastoreEntity.getKey();
  } else if (ammd.getType().equals(Long.class)) {
   return datastoreEntity.getKey().getId();
  }
 }
 return null;
}

代码示例来源：origin: stackoverflow.com

private static Key getKeyForCity(String uniqueID, String city) {

  Key ancestorKey = KeyFactory.createKey("User", uniqueID);

  Query query = new Query("Trip", ancestorKey);
  query.addFilter("city", FilterOperator.EQUAL, city);
  Entity trip = datastore.prepare(query).asSingleEntity();

  return trip.getKey();
}

代码示例来源：origin: stackoverflow.com

Datastore datastore = DatastoreOptions.getDefaultInstance().getService();

// ...

Entity old = null /* some value */;
Key oldKey = old.getKey();
KeyFactory kf = datastore.newKeyFactory().setKind(oldKey.getKind());

Entity newEntity = Entity.newBuilder(old)
    .setKey(kf.newKey(oldKey.getName()))
    .build();

datastore.delete(oldKey);
datastore.put(newEntity);

代码示例来源：origin: feroult/yawp

@Override
public List<String> listNamespaces() {
  DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
  Query query = new Query("__namespace__").setKeysOnly();
  PreparedQuery pq = ds.prepare(query);
  List<String> namespaces = new ArrayList<>();
  for (Entity entity : pq.asIterable()) {
    namespaces.add(entity.getKey().getName());
  }
  return namespaces;
}

代码示例来源：origin: org.vesalainen.dsql/dsql

private void refresh()
{
  model.clear();
  entityList = engine.getAll(storedStatementsKind);
  for (Entity entity : entityList)
  {
    model.add(entity.getKey().getName());
  }
}
private void init()

代码示例来源：origin: org.eiichiro.acidhouse/acidhouse-appengine

/**
 * Translates Google App Engine Datastore entity to Acid House {@code Lock} 
 * entity.
 * 
 * @param entity oogle App Engine Datastore entity.
 * @return Acid House {@code Lock} entity.
 */
public static Lock toLock(Entity entity) {
  return new Lock(entity.getKey().getName(), 
      (String) entity.getProperty(TRANSACTION_PROPERTY), 
      (Date) entity.getProperty(TIMESTAMP_PROPERTY));
}

代码示例来源：origin: com.googlecode.cedar-common/objectify

@Override
public T toObject(Entity ent, Objectify ofy)
{
  T pojo = TypeUtils.newInstance(this.entityClassConstructor);
  // This will set the id and parent fields as appropriate.
  this.setKey(pojo, ent.getKey());
  this.transmog.load(ent, pojo);
  
  // If there are any @PostLoad methods, call them
  this.invokeLifecycleCallbacks(this.postLoadMethods, pojo, ent, ofy);
  return pojo;
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

protected void clearData(String kind, Key parentKey, int waitMilliSec) {
  List<Key> eList = new ArrayList<>();
  Query query = new Query(kind, parentKey);
  for (Entity readRec : service.prepare(query).asIterable()) {
    eList.add(readRec.getKey());
  }
  if (eList.size() > 0) {
    service.delete(eList);
    sync(waitMilliSec);
  }
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@After
@Override
public void tearDown() {
  for (Set<Entity> entities2 : entities) {
    for (Entity entity : entities2) {
      service.delete(entity.getKey());
    }
  }
  super.tearDown();
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@Test
public void testSortingByIntegerProperty() throws Exception {
  String methodName = "testSortingByIntegerProperty";
  Entity parent = createTestEntityWithUniqueMethodNameKey(QUERY_SORTING_ENTITY, methodName);
  Key key = parent.getKey();
  Entity two = storeTestEntityWithSingleProperty(key, 2);
  Entity one = storeTestEntityWithSingleProperty(key, 1);
  Entity three = storeTestEntityWithSingleProperty(key, 3);
  assertList(whenSortingByTheSingleProperty(ASCENDING, key), containsResultsInOrder(one, two, three));
  assertList(whenSortingByTheSingleProperty(DESCENDING, key), containsResultsInOrder(three, two, one));
  service.delete(two.getKey(), one.getKey(), three.getKey());
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@Test
public void testSortingByFloatProperty() throws Exception {
  String methodName = "testSortingByFloatProperty";
  Entity parent = createTestEntityWithUniqueMethodNameKey(QUERY_SORTING_ENTITY, methodName);
  Key key = parent.getKey();
  Entity thirty = storeTestEntityWithSingleProperty(key, 30f);
  Entity two = storeTestEntityWithSingleProperty(key, 2f);
  Entity hundred = storeTestEntityWithSingleProperty(key, 100f);
  assertList(whenSortingByTheSingleProperty(ASCENDING, key), containsResultsInOrder(two, thirty, hundred));
  assertList(whenSortingByTheSingleProperty(DESCENDING, key), containsResultsInOrder(hundred, thirty, two));
  service.delete(thirty.getKey(), two.getKey(), hundred.getKey());
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@Test
public void testIntegerPropertySortingIsNotLexicographic() throws Exception {
  String methodName = "testIntegerPropertySortingIsNotLexicographic";
  Entity parent = createTestEntityWithUniqueMethodNameKey(QUERY_SORTING_ENTITY, methodName);
  Key key = parent.getKey();
  Entity ten = storeTestEntityWithSingleProperty(key, 10);
  Entity five = storeTestEntityWithSingleProperty(key, 5);
  Query query = createQuery().setAncestor(key).addSort(SINGLE_PROPERTY_NAME, ASCENDING);
  List<Entity> results = service.prepare(query).asList(withDefaults());
  assertTrue(results.indexOf(five) < results.indexOf(ten));   // if sorting were lexicographic, "10" would come before "5"
  service.delete(ten.getKey(), five.getKey());
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

protected void assertEntityNotInRange(Entity entity, KeyRange range) {
  // allocated key should not be re-used.
  Assert.assertTrue(entity.getKey().getId() > range.getEnd().getId() ||
    entity.getKey().getId() < range.getStart().getId());
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

@Test
public void queriesDontReturnDeletedEntities() throws Exception {
  String methodName = "queriesDontReturnDeletedEntities";
  Entity entity = createTestEntityWithUniqueMethodNameKey(SMOKE_TEST_ENTITY, methodName);
  Key key = entity.getKey();
  service.put(entity);
  service.delete(key);
  List<Entity> entities = service.prepare(new Query(SMOKE_TEST_ENTITY).setAncestor(key))
    .asList(FetchOptions.Builder.withDefaults());
  assertEquals(0, entities.size());
}

代码示例来源：origin: GoogleCloudPlatform/appengine-tck

public void purgeTestRunRecords() {
  DatastoreService datastoreService = DatastoreServiceFactory. getDatastoreService();
  FilterPredicate testRunFilter = new FilterPredicate(TEST_RUN_ID, FilterOperator.EQUAL, testRunId);
  Query query = new Query(entityName).setFilter(testRunFilter).setKeysOnly();
  for (Entity readRec : datastoreService.prepare(query).asIterable()) {
    datastoreService.delete(readRec.getKey());
  }
}