Package com.google.cloud.bigquery.storage.v1beta1 (2.12.3)

The interfaces provided are listed below, along with usage samples.

BaseBigQueryStorageClient

Service Description: BigQuery storage API.

The BigQuery storage API can be used to read data stored in BigQuery.

Sample for BaseBigQueryStorageClient:


 try (BaseBigQueryStorageClient baseBigQueryStorageClient = BaseBigQueryStorageClient.create()) {
   TableReferenceProto.TableReference tableReference =
       TableReferenceProto.TableReference.newBuilder().build();
   ProjectName parent = ProjectName.of("[PROJECT]");
   int requestedStreams = 1017221410;
   Storage.ReadSession response =
       baseBigQueryStorageClient.createReadSession(tableReference, parent, requestedStreams);
 }

Classes

ArrowProto.ArrowRecordBatch

Arrow RecordBatch.

Protobuf type google.cloud.bigquery.storage.v1beta1.ArrowRecordBatch

ArrowProto.ArrowRecordBatch.Builder

Arrow RecordBatch.

Protobuf type google.cloud.bigquery.storage.v1beta1.ArrowRecordBatch

ArrowProto.ArrowSchema

Arrow schema.

Protobuf type google.cloud.bigquery.storage.v1beta1.ArrowSchema

ArrowProto.ArrowSchema.Builder

Arrow schema.

Protobuf type google.cloud.bigquery.storage.v1beta1.ArrowSchema

AvroProto.AvroRows

Avro rows.

Protobuf type google.cloud.bigquery.storage.v1beta1.AvroRows

AvroProto.AvroRows.Builder

Avro rows.

Protobuf type google.cloud.bigquery.storage.v1beta1.AvroRows

AvroProto.AvroSchema

Avro schema.

Protobuf type google.cloud.bigquery.storage.v1beta1.AvroSchema

AvroProto.AvroSchema.Builder

Avro schema.

Protobuf type google.cloud.bigquery.storage.v1beta1.AvroSchema

BaseBigQueryStorageClient

Service Description: BigQuery storage API.

The BigQuery storage API can be used to read data stored in BigQuery.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:


 try (BaseBigQueryStorageClient baseBigQueryStorageClient = BaseBigQueryStorageClient.create()) {
   TableReferenceProto.TableReference tableReference =
       TableReferenceProto.TableReference.newBuilder().build();
   ProjectName parent = ProjectName.of("[PROJECT]");
   int requestedStreams = 1017221410;
   Storage.ReadSession response =
       baseBigQueryStorageClient.createReadSession(tableReference, parent, requestedStreams);
 }

Note: close() needs to be called on the BaseBigQueryStorageClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

Many parameters require resource names to be formatted in a particular way. To assist with these names, this class includes a format method for each type of name, and additionally a parse method to extract the individual identifiers contained within names that are returned.

This class can be customized by passing in a custom instance of BaseBigQueryStorageSettings to create(). For example:

To customize credentials:


 BaseBigQueryStorageSettings baseBigQueryStorageSettings =
     BaseBigQueryStorageSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 BaseBigQueryStorageClient baseBigQueryStorageClient =
     BaseBigQueryStorageClient.create(baseBigQueryStorageSettings);

To customize the endpoint:


 BaseBigQueryStorageSettings baseBigQueryStorageSettings =
     BaseBigQueryStorageSettings.newBuilder().setEndpoint(myEndpoint).build();
 BaseBigQueryStorageClient baseBigQueryStorageClient =
     BaseBigQueryStorageClient.create(baseBigQueryStorageSettings);

Please refer to the GitHub repository's samples for more quickstart code snippets.

BaseBigQueryStorageSettings

Settings class to configure an instance of BaseBigQueryStorageClient.

The default instance has everything set to sensible defaults:

The default service address (bigquerystorage.googleapis.com) and default port (443) are used.
Credentials are acquired automatically through Application Default Credentials.
Retries are configured for idempotent methods but not for non-idempotent methods.

The builder of this class is recursive, so contained classes are themselves builders. When build() is called, the tree of builders is called to create the complete settings object.

For example, to set the total timeout of createReadSession to 30 seconds:


 BaseBigQueryStorageSettings.Builder baseBigQueryStorageSettingsBuilder =
     BaseBigQueryStorageSettings.newBuilder();
 baseBigQueryStorageSettingsBuilder
     .createReadSessionSettings()
     .setRetrySettings(
         baseBigQueryStorageSettingsBuilder
             .createReadSessionSettings()
             .getRetrySettings()
             .toBuilder()
             .setTotalTimeout(Duration.ofSeconds(30))
             .build());
 BaseBigQueryStorageSettings baseBigQueryStorageSettings =
     baseBigQueryStorageSettingsBuilder.build();

BaseBigQueryStorageSettings.Builder

Builder for BaseBigQueryStorageSettings.

BigQueryStorageClient

Service Description: BigQuery storage API.

The BigQuery storage API can be used to read data stored in BigQuery.

This class provides the ability to make remote calls to the backing service through method calls that map to API methods. Sample code to get started:

 
 try (BigQueryStorageClient bigQueryStorageClient = BigQueryStorageClient.create()) {
   TableReference tableReference = TableReference.newBuilder().build();
   String parent = "";
   int requestedStreams = 0;
   ReadSession response = bigQueryStorageClient.createReadSession(tableReference, parent, requestedStreams);
 }

Note: close() needs to be called on the bigQueryStorageClient object to clean up resources such as threads. In the example above, try-with-resources is used, which automatically calls close().

The surface of this class includes several types of Java methods for each of the API's methods:

A "flattened" method. With this type of method, the fields of the request type have been converted into function parameters. It may be the case that not all fields are available as parameters, and not every API method will have a flattened method entry point.
A "request object" method. This type of method only takes one parameter, a request object, which must be constructed before the call. Not every API method will have a request object method.
A "callable" method. This type of method takes no parameters and returns an immutable API callable object, which can be used to initiate calls to the service.

See the individual methods for example code.

This class can be customized by passing in a custom instance of BigQueryStorageSettings to create(). For example:

To customize credentials:

 
 BigQueryStorageSettings bigQueryStorageSettings =
     BigQueryStorageSettings.newBuilder()
         .setCredentialsProvider(FixedCredentialsProvider.create(myCredentials))
         .build();
 BigQueryStorageClient bigQueryStorageClient =
     BigQueryStorageClient.create(bigQueryStorageSettings);

To customize the endpoint:

 
 BigQueryStorageSettings bigQueryStorageSettings =
     BigQueryStorageSettings.newBuilder().setEndpoint(myEndpoint).build();
 BigQueryStorageClient bigQueryStorageClient =
     BigQueryStorageClient.create(bigQueryStorageSettings);