Examples with Key com.google.cloud.datastore.Key used on opensource projects

Example 21 with Key

use of com.google.cloud.datastore.Key in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method getEntityWithKey.

/**
   * Example of getting an entity.
   */
// [TARGET get(Key, ReadOption...)]
// [VARIABLE "my_key_name"]
public Entity getEntityWithKey(String keyName) {
    // [START getEntityWithKey]
    Key key = datastore.newKeyFactory().setKind("MyKind").newKey(keyName);
    Entity entity = datastore.get(key);
    // [END getEntityWithKey]
    return entity;
}

Example 22 with Key

use of com.google.cloud.datastore.Key in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method batchUpdateEntities.

/**
   * Example of updating multiple entities.
   */
// [TARGET update(Entity...)]
// [VARIABLE "my_key_name_1"]
// [VARIABLE "my_key_name_2"]
public void batchUpdateEntities(String keyName1, String keyName2) {
    // [START batchUpdateEntities]
    Key key1 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName1);
    Entity.Builder entityBuilder1 = Entity.newBuilder(key1);
    entityBuilder1.set("propertyName", "updatedValue1");
    Entity entity1 = entityBuilder1.build();
    Key key2 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName2);
    Entity.Builder entityBuilder2 = Entity.newBuilder(key2);
    entityBuilder2.set("propertyName", "updatedValue2");
    Entity entity2 = entityBuilder2.build();
    datastore.update(entity1, entity2);
// [END batchUpdateEntities]
}

Example 23 with Key

use of com.google.cloud.datastore.Key in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method batchDeleteEntities.

/**
   * Example of deleting multiple entities.
   */
// [TARGET delete(Key...)]
// [VARIABLE "my_key_name1"]
// [VARIABLE "my_key_name2"]
public void batchDeleteEntities(String keyName1, String keyName2) {
    // [START batchDeleteEntities]
    Key key1 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName1);
    Key key2 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName2);
    datastore.delete(key1, key2);
// [END batchDeleteEntities]
}

Example 24 with Key

use of com.google.cloud.datastore.Key in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method putSingleEntity.

/**
   * Example of putting a single entity.
   */
// [TARGET put(FullEntity)]
// [VARIABLE "my_key_name"]
public void putSingleEntity(String keyName) {
    // [START putSingleEntity]
    Key key = datastore.newKeyFactory().setKind("MyKind").newKey(keyName);
    Entity.Builder entityBuilder = Entity.newBuilder(key);
    entityBuilder.set("propertyName", "value");
    Entity entity = entityBuilder.build();
    datastore.put(entity);
// [END putSingleEntity]
}

Example 25 with Key

use of com.google.cloud.datastore.Key in project google-cloud-java by GoogleCloudPlatform.

the class DatastoreSnippets method fetchEntitiesWithKeys.

/**
   * Example of fetching a list of Entity objects.
   */
// [TARGET fetch(Iterable, ReadOption...)]
// [VARIABLE "my_first_key_name"]
// [VARIABLE "my_second_key_name"]
public List<Entity> fetchEntitiesWithKeys(String firstKeyName, String secondKeyName) {
    // [START fetchEntitiesWithKeys]
    KeyFactory keyFactory = datastore.newKeyFactory().setKind("MyKind");
    Key firstKey = keyFactory.newKey(firstKeyName);
    Key secondKey = keyFactory.newKey(secondKeyName);
    List<Entity> entities = datastore.fetch(Lists.newArrayList(firstKey, secondKey));
    for (Entity entity : entities) {
    // do something with the entity
    }
    // [END fetchEntitiesWithKeys]
    return entities;
}