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

Example 36 with Entity

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

the class CreateEntity method main.

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);
}

Example 37 with Entity

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

the class DatastoreSnippets method addSingleEntity.

/**
   * Example of adding a single entity.
   */
// [TARGET add(FullEntity)]
// [VARIABLE "my_key_name"]
public void addSingleEntity(String keyName) {
    // [START addSingleEntity]
    Key key = datastore.newKeyFactory().setKind("MyKind").newKey(keyName);
    Entity.Builder entityBuilder = Entity.newBuilder(key);
    entityBuilder.set("propertyName", "value");
    Entity entity = entityBuilder.build();
    try {
        datastore.add(entity);
    } catch (DatastoreException ex) {
        if ("ALREADY_EXISTS".equals(ex.getReason())) {
        // entity.getKey() already exists
        }
    }
// [END addSingleEntity]
}

Example 38 with Entity

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

the class DatastoreSnippets method newBatch.

/**
   * Example of starting a new batch.
   */
// [TARGET newBatch()]
// [VARIABLE "my_key_name_1"]
// [VARIABLE "my_key_name_2"]
public Batch newBatch(String keyName1, String keyName2) {
    // [START newBatch]
    Key key1 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName1);
    Key key2 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName2);
    Batch batch = datastore.newBatch();
    Entity entity1 = Entity.newBuilder(key1).set("name", "John").build();
    Entity entity2 = Entity.newBuilder(key2).set("title", "title").build();
    batch.add(entity1);
    batch.add(entity2);
    batch.submit();
    // [END newBatch]
    return batch;
}

Example 39 with Entity

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

the class DatastoreSnippets method runQueryOnProperty.

/**
   * Example of running a query to find all entities with a matching property value.
   */
// [TARGET run(Query, ReadOption...)]
// [VARIABLE "my_kind"]
// [VARIABLE "my_property"]
// [VARIABLE "my_value"]
public List<Entity> runQueryOnProperty(String kind, String property, String value) {
    // TODO change so that it's not necessary to hold the entities in a list for integration testing
    // [START runQueryOnProperty]
    StructuredQuery<Entity> query = Query.newEntityQueryBuilder().setKind(kind).setFilter(PropertyFilter.eq(property, value)).build();
    QueryResults<Entity> results = datastore.run(query);
    List<Entity> entities = Lists.newArrayList();
    while (results.hasNext()) {
        Entity result = results.next();
        // do something with result
        entities.add(result);
    }
    // [END runQueryOnProperty]
    return entities;
}

Example 40 with Entity

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

the class DatastoreSnippets method batchAddEntities.

/**
   * Example of adding multiple entities.
   */
// [TARGET add(FullEntity...)]
// [VARIABLE "my_key_name1"]
// [VARIABLE "my_key_name2"]
public void batchAddEntities(String keyName1, String keyName2) {
    // [START batchAddEntities]
    Key key1 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName1);
    Entity.Builder entityBuilder1 = Entity.newBuilder(key1);
    entityBuilder1.set("propertyName", "value1");
    Entity entity1 = entityBuilder1.build();
    Key key2 = datastore.newKeyFactory().setKind("MyKind").newKey(keyName2);
    Entity.Builder entityBuilder2 = Entity.newBuilder(key2);
    entityBuilder2.set("propertyName", "value2");
    Entity entity2 = entityBuilder2.build();
    try {
        datastore.add(entity1, entity2);
    } catch (DatastoreException ex) {
        if ("ALREADY_EXISTS".equals(ex.getReason())) {
        // at least one of entity1.getKey() and entity2.getKey() already exists
        }
    }
// [END batchAddEntities]
}