What is the relationship between the Protobuf models in bigquery.storage.v1 and JSON models in bigquery.model ?.

[damnMeddlingKid]

Im currently using the JSON models for TableFieldSchema from com.google.api.services.bigquery.model , this has an equivalaent model in com.google.cloud.bigquery.storage.v1 derived from Protobuf. What is the relationship between these two ?.

1. Can i convert to and from these models somehow ?, the protobuf has a well typed interface that is nice to work with but some utility functions expect the JSON model
2. Can i rely on these two models to be in sync with each other ?.

For example i'd like to import constants from the proto version and use it to build the json model.

import com.google.api.services.bigquery.model.{TableFieldSchema => JSONTableFieldSchema} //alias import
import com.google.cloud.bigquery.storage.v1.{TableFieldSchema => ProtoTableFieldSchema} //alias import

new JSONTableFIeldSchema().setType(ProtoTableFieldSchema.Type.STRING.name()) 

instead of

new JSONTableFIeldSchema().setType("STRING") 

[damnMeddlingKid]

It looks like there is code to go from the json model to proto https://github.com/apache/beam/blob/2c59a748b91a0988e0b8e332f18bd9db072c3e95/sdks/java/io/google-cloud-platform/src/main/java/org/apache/beam/sdk/io/gcp/bigquery/TableRowToStorageApiProto.java#L768

I don't know if the reverse exists. The mapping of type definitions is not public so there isn't something that can be easily imported.

[blakeli0]

@Neenu1995 Transferring this issue to BigQuery since it's BigQuery specific.