Hi Linus,

I appreciate kind advice. I also tried to look the example project. The 
issue is that my existing app engine built on datastore since 2011 and 
Google announce that datastore will automatically migrate to Firestore. So 
there are no user's requirement to do. When I try to deploy existing code 
after modifying compatible with Open JDK 11, it generate lots of error 
regarding datatore service and more. I can not find any material in google 
app engine document to resolve this. 

On Tuesday, 17 December 2019 21:31:50 UTC+13, Linus Larsen wrote:
>
> Hi
>
> The gcloud sdk has different package names for the datastore classes, ex: 
> com.google.cloud.datastore.Cursor.
> I think you'll need to import the cloud datastore classes / client api. 
> Check the bookshelf example app pom / parent pom.
>
>
>
>
> Den onsdag 27 november 2019 kl. 01:09:30 UTC+1 skrev Han Ju Kim:
>>
>> Hi Elliott,
>>
>> I appreciate your guide, however this is is not clearly described even 
>> stackoverflow [appengine] quite well. My solution run quite well in Java8, 
>> however I love to migrate that to latest on for Java11 and google cloud. 
>> It's a library provided from Google Cloud without any kind description on 
>> migration. When I deployed Java11, it generated lots of error like above. 
>> The google document for Java 11 and Datastore just say that it will be 
>> automatically migrated internally. However, nothing can be found anywhere.
>> There may be many developer experiencing same stuff. Is it too early to 
>> consider to migrate Java11? 
>>
>>
>>
>> On Wednesday, 27 November 2019 12:26:54 UTC+13, Elliott (Cloud Platform 
>> Support) wrote:
>>>
>>> Hello Han,
>>>
>>> Please note that Google Groups are reserved for general Google Cloud 
>>> Platform and product discussions and not for technical issues, which is why 
>>> I suggest moving the troubleshooting to Stackoverflow 
>>> <https://stackoverflow.com/>, where you may receive advice from our 
>>> programming community.
>>>
>>>

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