Based on this documentation
<https://cloud.google.com/appengine/docs/standard/java/datastore/entities#Java_Embedded_entities>,
here is how you should embed and retrieve an entity:
Embed / Create :
// Entity employee = ...;
EmbeddedEntity embeddedContactInfo = new EmbeddedEntity();
embeddedContactInfo.setProperty("homeAddress", "123 Fake St, Made, UP
45678");
embeddedContactInfo.setProperty("phoneNumber", "555-555-5555");
embeddedContactInfo.setProperty("emailAddress", "[email protected]");
employee.setProperty("contactInfo", embeddedContactInfo);
Retrieve the Embedded Entity:
Entity employee = datastore.get(employeeKey);
EmbeddedEntity embeddedContactInfo = (EmbeddedEntity)
employee.getProperty("contactInfo");
On the above, the ContactInfo is embedded to the Employee. Here are current
documentations about the EmbeddedEntity class
<https://cloud.google.com/appengine/docs/standard/java/javadoc/com/google/appengine/api/datastore/EmbeddedEntity>
and
GitHub test implementations
<https://github.com/GoogleCloudPlatform/java-docs-samples/blob/master/appengine-java8/datastore/src/test/java/com/example/appengine/EntitiesTest.java>
.
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