In general you would create your own App Engine endpoint APIs via
Google Cloud Endpoints. Your API can have individual URL endpoints for each of your tables (or a single URL endpoint that can accept a table name; however you decide to design it). Your clients would call your APIs via URL HTTP requests, and it will run your App Engine code accordingly (passing your App Engine application whatever request body and query parameter values the client sends in their HTTP request).
In your App Engine code you would create different functions for each endpoint (or a single function for only a single endpoint) that would use the java.sql.DriverManager to connect to your Cloud SQL instance (as shown in the
documented example). You can then modify your Cloud SQL instance's tables and data directly from App Engine based on the endpoint API your client requested and the values they passed to the endpoint.
- Note that Google Groups is reserved for general product discussions. For technical support on implementing the above, it is recommended to post
detailed questions to
Stack Exchange using the supported Cloud tags.