Class SpannerGrpc.SpannerStub (6.101.1)

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public static final class SpannerGrpc.SpannerStub extends AbstractAsyncStub<SpannerGrpc.SpannerStub>

A stub to allow clients to do asynchronous rpc calls to service Spanner.

Cloud Spanner API The Cloud Spanner API can be used to manage sessions and execute transactions on data stored in Cloud Spanner databases.

Inheritance

java.lang.Object > io.grpc.stub.AbstractStub > io.grpc.stub.AbstractAsyncStub > SpannerGrpc.SpannerStub

Inherited Members

io.grpc.stub.AbstractAsyncStub.<T>newStub(io.grpc.stub.AbstractStub.StubFactory<T>,io.grpc.Channel)

io.grpc.stub.AbstractAsyncStub.<T>newStub(io.grpc.stub.AbstractStub.StubFactory<T>,io.grpc.Channel,io.grpc.CallOptions)

io.grpc.stub.AbstractStub.<T>withOption(io.grpc.CallOptions.Key<T>,T)

io.grpc.stub.AbstractStub.build(io.grpc.Channel,io.grpc.CallOptions)

io.grpc.stub.AbstractStub.getCallOptions()

io.grpc.stub.AbstractStub.getChannel()

io.grpc.stub.AbstractStub.withCallCredentials(io.grpc.CallCredentials)

io.grpc.stub.AbstractStub.withChannel(io.grpc.Channel)

io.grpc.stub.AbstractStub.withCompression(java.lang.String)

io.grpc.stub.AbstractStub.withDeadline(io.grpc.Deadline)

io.grpc.stub.AbstractStub.withDeadlineAfter(java.time.Duration)

io.grpc.stub.AbstractStub.withDeadlineAfter(long,java.util.concurrent.TimeUnit)

io.grpc.stub.AbstractStub.withExecutor(java.util.concurrent.Executor)

io.grpc.stub.AbstractStub.withInterceptors(io.grpc.ClientInterceptor...)

io.grpc.stub.AbstractStub.withMaxInboundMessageSize(int)

io.grpc.stub.AbstractStub.withMaxOutboundMessageSize(int)

io.grpc.stub.AbstractStub.withOnReadyThreshold(int)

io.grpc.stub.AbstractStub.withWaitForReady()

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Methods

batchCreateSessions(BatchCreateSessionsRequest request, StreamObserver<BatchCreateSessionsResponse> responseObserver)

public void batchCreateSessions(BatchCreateSessionsRequest request, StreamObserver<BatchCreateSessionsResponse> responseObserver)

Creates multiple new sessions. This API can be used to initialize a session cache on the clients. See https://goo.gl/TgSFN2 for best practices on session cache management.

Parameters
Name	Description
request	BatchCreateSessionsRequest
responseObserver	io.grpc.stub.StreamObserver<BatchCreateSessionsResponse>

batchWrite(BatchWriteRequest request, StreamObserver<BatchWriteResponse> responseObserver)

public void batchWrite(BatchWriteRequest request, StreamObserver<BatchWriteResponse> responseObserver)

Batches the supplied mutation groups in a collection of efficient transactions. All mutations in a group are committed atomically. However, mutations across groups can be committed non-atomically in an unspecified order and thus, they must be independent of each other. Partial failure is possible, that is, some groups might have been committed successfully, while some might have failed. The results of individual batches are streamed into the response as the batches are applied. BatchWrite requests are not replay protected, meaning that each mutation group can be applied more than once. Replays of non-idempotent mutations can have undesirable effects. For example, replays of an insert mutation can produce an already exists error or if you use generated or commit timestamp-based keys, it can result in additional rows being added to the mutation's table. We recommend structuring your mutation groups to be idempotent to avoid this issue.

Parameters
Name	Description
request	BatchWriteRequest
responseObserver	io.grpc.stub.StreamObserver<BatchWriteResponse>

beginTransaction(BeginTransactionRequest request, StreamObserver<Transaction> responseObserver)

public void beginTransaction(BeginTransactionRequest request, StreamObserver<Transaction> responseObserver)

Begins a new transaction. This step can often be skipped: Read, ExecuteSql and Commit can begin a new transaction as a side-effect.

Parameters
Name	Description
request	BeginTransactionRequest
responseObserver	io.grpc.stub.StreamObserver<Transaction>

build(Channel channel, CallOptions callOptions)

protected SpannerGrpc.SpannerStub build(Channel channel, CallOptions callOptions)

Parameters
Name	Description
channel	io.grpc.Channel
callOptions	io.grpc.CallOptions

Returns
Type	Description
SpannerGrpc.SpannerStub

Overrides

io.grpc.stub.AbstractStub.build(io.grpc.Channel,io.grpc.CallOptions)

commit(CommitRequest request, StreamObserver<CommitResponse> responseObserver)

public void commit(CommitRequest request, StreamObserver<CommitResponse> responseObserver)

Commits a transaction. The request includes the mutations to be applied to rows in the database. Commit might return an ABORTED error. This can occur at any time; commonly, the cause is conflicts with concurrent transactions. However, it can also happen for a variety of other reasons. If Commit returns ABORTED, the caller should retry the transaction from the beginning, reusing the same session. On very rare occasions, Commit might return UNKNOWN. This can happen, for example, if the client job experiences a 1+ hour networking failure. At that point, Cloud Spanner has lost track of the transaction outcome and we recommend that you perform another read from the database to see the state of things as they are now.

Parameters
Name	Description
request	CommitRequest
responseObserver	io.grpc.stub.StreamObserver<CommitResponse>

createSession(CreateSessionRequest request, StreamObserver<Session> responseObserver)

public void createSession(CreateSessionRequest request, StreamObserver<Session> responseObserver)

Creates a new session. A session can be used to perform transactions that read and/or modify data in a Cloud Spanner database. Sessions are meant to be reused for many consecutive transactions. Sessions can only execute one transaction at a time. To execute multiple concurrent read-write/write-only transactions, create multiple sessions. Note that standalone reads and queries use a transaction internally, and count toward the one transaction limit. Active sessions use additional server resources, so it's a good idea to delete idle and unneeded sessions. Aside from explicit deletes, Cloud Spanner can delete sessions when no operations are sent for more than an hour. If a session is deleted, requests to it return NOT_FOUND. Idle sessions can be kept alive by sending a trivial SQL query periodically, for example, "SELECT 1".

Parameters
Name	Description
request	CreateSessionRequest
responseObserver	io.grpc.stub.StreamObserver<Session>

deleteSession(DeleteSessionRequest request, StreamObserver<Empty> responseObserver)

public void deleteSession(DeleteSessionRequest request, StreamObserver<Empty> responseObserver)

Ends a session, releasing server resources associated with it. This asynchronously triggers the cancellation of any operations that are running with this session.

Parameters
Name	Description
request	DeleteSessionRequest
responseObserver	io.grpc.stub.StreamObserver<Empty>

executeBatchDml(ExecuteBatchDmlRequest request, StreamObserver<ExecuteBatchDmlResponse> responseObserver)

public void executeBatchDml(ExecuteBatchDmlRequest request, StreamObserver<ExecuteBatchDmlResponse> responseObserver)

Executes a batch of SQL DML statements. This method allows many statements to be run with lower latency than submitting them sequentially with ExecuteSql. Statements are executed in sequential order. A request can succeed even if a statement fails. The ExecuteBatchDmlResponse.status field in the response provides information about the statement that failed. Clients must inspect this field to determine whether an error occurred. Execution stops after the first failed statement; the remaining statements are not executed.

Parameters
Name	Description
request	ExecuteBatchDmlRequest
responseObserver	io.grpc.stub.StreamObserver<ExecuteBatchDmlResponse>

executeSql(ExecuteSqlRequest request, StreamObserver<ResultSet> responseObserver)

public void executeSql(ExecuteSqlRequest request, StreamObserver<ResultSet> responseObserver)

Executes an SQL statement, returning all results in a single reply. This method can't be used to return a result set larger than 10 MiB; if the query yields more data than that, the query fails with a FAILED_PRECONDITION error. Operations inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See Transaction for more details. Larger result sets can be fetched in streaming fashion by calling ExecuteStreamingSql instead. The query string can be SQL or Graph Query Language (GQL).

Parameters
Name	Description
request	ExecuteSqlRequest
responseObserver	io.grpc.stub.StreamObserver<ResultSet>

executeStreamingSql(ExecuteSqlRequest request, StreamObserver<PartialResultSet> responseObserver)

public void executeStreamingSql(ExecuteSqlRequest request, StreamObserver<PartialResultSet> responseObserver)

Like ExecuteSql, except returns the result set as a stream. Unlike ExecuteSql, there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB. The query string can be SQL or Graph Query Language (GQL).

Parameters
Name	Description
request	ExecuteSqlRequest
responseObserver	io.grpc.stub.StreamObserver<PartialResultSet>

getSession(GetSessionRequest request, StreamObserver<Session> responseObserver)

public void getSession(GetSessionRequest request, StreamObserver<Session> responseObserver)

Gets a session. Returns NOT_FOUND if the session doesn't exist. This is mainly useful for determining whether a session is still alive.

Parameters
Name	Description
request	GetSessionRequest
responseObserver	io.grpc.stub.StreamObserver<Session>

listSessions(ListSessionsRequest request, StreamObserver<ListSessionsResponse> responseObserver)

public void listSessions(ListSessionsRequest request, StreamObserver<ListSessionsResponse> responseObserver)

Lists all sessions in a given database.

Parameters
Name	Description
request	ListSessionsRequest
responseObserver	io.grpc.stub.StreamObserver<ListSessionsResponse>

partitionQuery(PartitionQueryRequest request, StreamObserver<PartitionResponse> responseObserver)

public void partitionQuery(PartitionQueryRequest request, StreamObserver<PartitionResponse> responseObserver)

Creates a set of partition tokens that can be used to execute a query operation in parallel. Each of the returned partition tokens can be used by ExecuteStreamingSql to specify a subset of the query result to read. The same session and read-only transaction must be used by the PartitionQueryRequest used to create the partition tokens and the ExecuteSqlRequests that use the partition tokens. Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it isn't possible to resume the query, and the whole operation must be restarted from the beginning.

Parameters
Name	Description
request	PartitionQueryRequest
responseObserver	io.grpc.stub.StreamObserver<PartitionResponse>

partitionRead(PartitionReadRequest request, StreamObserver<PartitionResponse> responseObserver)

public void partitionRead(PartitionReadRequest request, StreamObserver<PartitionResponse> responseObserver)

Creates a set of partition tokens that can be used to execute a read operation in parallel. Each of the returned partition tokens can be used by StreamingRead to specify a subset of the read result to read. The same session and read-only transaction must be used by the PartitionReadRequest used to create the partition tokens and the ReadRequests that use the partition tokens. There are no ordering guarantees on rows returned among the returned partition tokens, or even within each individual StreamingRead call issued with a partition_token. Partition tokens become invalid when the session used to create them is deleted, is idle for too long, begins a new transaction, or becomes too old. When any of these happen, it isn't possible to resume the read, and the whole operation must be restarted from the beginning.

Parameters
Name	Description
request	PartitionReadRequest
responseObserver	io.grpc.stub.StreamObserver<PartitionResponse>

read(ReadRequest request, StreamObserver<ResultSet> responseObserver)

public void read(ReadRequest request, StreamObserver<ResultSet> responseObserver)

Reads rows from the database using key lookups and scans, as a simple key/value style alternative to ExecuteSql. This method can't be used to return a result set larger than 10 MiB; if the read matches more data than that, the read fails with a FAILED_PRECONDITION error. Reads inside read-write transactions might return ABORTED. If this occurs, the application should restart the transaction from the beginning. See Transaction for more details. Larger result sets can be yielded in streaming fashion by calling StreamingRead instead.

Parameters
Name	Description
request	ReadRequest
responseObserver	io.grpc.stub.StreamObserver<ResultSet>

rollback(RollbackRequest request, StreamObserver<Empty> responseObserver)

public void rollback(RollbackRequest request, StreamObserver<Empty> responseObserver)

Rolls back a transaction, releasing any locks it holds. It's a good idea to call this for any transaction that includes one or more Read or ExecuteSql requests and ultimately decides not to commit. Rollback returns OK if it successfully aborts the transaction, the transaction was already aborted, or the transaction isn't found. Rollback never returns ABORTED.

Parameters
Name	Description
request	RollbackRequest
responseObserver	io.grpc.stub.StreamObserver<Empty>

streamingRead(ReadRequest request, StreamObserver<PartialResultSet> responseObserver)

public void streamingRead(ReadRequest request, StreamObserver<PartialResultSet> responseObserver)

Like Read, except returns the result set as a stream. Unlike Read, there is no limit on the size of the returned result set. However, no individual row in the result set can exceed 100 MiB, and no column value can exceed 10 MiB.

Parameters
Name	Description
request	ReadRequest
responseObserver	io.grpc.stub.StreamObserver<PartialResultSet>