google-cloud-datastore

Use case: I am developing an appengine standard application in python, and another one in go. I'd like to have the entities from both the applications in the same datastore. Is that possible? When I start the first dev_appserver.py with the flag --support_datastore_emulator=true , and with a specific --datastore_path , the gcloud beta emulators datastore env-init command fails with a ERROR: (gcloud.beta.emulators.datastore.env-init) Unable to find env.yaml in the data_dir [~/.config/gcloud/emulators/datastore]. Please ensure you have started the appropriate emulator. Yes, it is possible, but

I am working on a GAE Django Project where I have to implementing the search functionality, I have written a query and it fetches the data according to the search keyword. portfolio = Portfolio.all().filter('full_name >=',key).filter('full_name <',unicode(key) + u'\ufffd') The issue with this query is, that it is case sensitive. Is there any way through which I can make it to work, without depending upon the case of the keyword? Please suggest. Thanks in advance. You need to store normalized versions of your data at write time, then use the same normalization to search. Store the data either

I am trying to query the google datastore for something like (with pm --> persistanceManager): String filters = "( field == 'value' || field == 'anotherValue' )"; Query query = pm.newQuery(myType.class, filters); When I execute - I am getting back: App Engine datastore does not support operator OR . What's the best approach in people experience for this kind of queries? Any help appreciated! Perform multiple queries. The Datastore, like all other databases, isn't able to efficiently execute disjunctions. Unlike other databases, it exposes this difficulty to the user, to make it clear that what

I need some properties to be unique. How can I achieve this? Is there something like unique=True ? I'm using Google App Engine for Python. There's no built-in constraint for making sure a value is unique. You can do this however: query = MyModel.all(keys_only=True).filter('unique_property', value_to_be_used) entity = query.get() if entity: raise Exception('unique_property must have a unique value!') I use keys_only=True because it'll improve the performance slightly by not fetching the data for the entity. A more efficient method would be to use a separate model with no fields whose key name

I have an app where each DataStore Entity of a specific kind can have a number of photos associated with it. (Imagine a car sales website - one Car has multiple photos) Originally since all the data is being sourced from another site, I was limited to having to store the photos as DataStore Blobs, but now that its possible to write BlobStore items programatically, I'm wondering if I should change my design and store the photos as BlobStore items? So, the question is: Is it 'better' to store the photos in the Blobstore, or as Blobs in the Datastore? Both are possible solutions, but which would

As we know, in Google App engine, for each registered email account, we are allowed to make 10 applications. Now, I need to share entities among the applications. Is this possible? If yes, how is it implemented? Marvin Pinto No, this cannot be done. However, as Nick Johnson points out, you can use remote_api to do what you need. Are you sure you really need to do this? Don't forget, you can have multiple versions of an application running against the same datastore. Only 1 version of the app is your "default" and gets your non appspot.com domain name, but you can have completely different