If you use the first() method such as: Do you need to use limit(1) like this Car car = ofy().load().type(Car.class).filter("vin", "123456789").limi ...
If you use the first() method such as: Do you need to use limit(1) like this Car car = ofy().load().type(Car.class).filter("vin", "123456789").limi ...
How exactly does batch saving entities in Datastore work as opposed to saving one at a time? For example, if you batch save a large amount (let's say ...
I want to load an entity by key, update it, save it back to Datastore and then return it to the client from an endpoint. However, I want to make absol ...
I am trying to catch a concurrent modification exception in Firestore in Datastore mode with Objectify. I created a method and ran it 50 times in 1 se ...
I am using cloud endpoints with objectify and Firestore in Datastore mode. Although it says in the documentation that all queries are strongly consist ...
I was doing a stress test of running an endpoint multiple times in a short period of time. The endpoint updates the same entity in a transaction. Even ...
Can objectify do read-only transactions as shown in the datastore api here? I don't see a method for it but is there some other way to do it? ...
How can I make it so that if there is an error in a transaction (such as a ConcurrentModificationException error), the error is propagated to the end ...
Are Google Datastore queries slower when put into a transaction? Assuming the query is exactly the same, would the run time of a transaction + query b ...
I need to fetch the single object from the data store which I have inserted using Objectify.? ...
I am using Objectify(v5) for accessing Datastore, in App Engine Standard Environment, with Java. Entities are cached by Objectify automatically, and I ...
What happens if my datastore transaction fails and I have some more code that is supposed to run after it finishes? Does the application throw and err ...
I am trying to store a map object in Java to Google Cloud Datastore. What are the disadvantages of treating it as EmbeddedEntity compared to directly ...
I'm trying to iterate over 1000 keys of an entity at a time using this code but unlike Query, QueryKeys does not have a startAt() method for me to set ...
If I have a @Load Ref<Driver> in my entity Car and I make a query for Cars, when are those refs actually loaded from the datastore? For example ...
We're having some issue with our application that uses Datastore (not Firestore in Datastore mode) after redeploying the code. On the new AppEngine se ...
I have a collection of very simple Java objects which I store in Google Firestore database (native mode) using Objectify 6.0.7. Storing, deleting, and ...
We want to do a zero downtime migration of a google app engine java 8 standard project to another region. Unfortunately google does not support this, ...
I am making an ancestor query inside of a transaction like this: Later in the transaction I create and save a new entity that uses the key I used i ...
Entity 1 Entity 2 I want filter Entity 1 with list of companyIds. I'm using appengine-sdk version 1.9.68 and Objectify version 6.0.6. Any sugge ...