com.google.spanner.v1

Class SpannerGrpc.SpannerBlockingStub

java.lang.Object

io.grpc.stub.AbstractStub<SpannerGrpc.SpannerBlockingStub>

com.google.spanner.v1.SpannerGrpc.SpannerBlockingStub

Enclosing class:

SpannerGrpc

public static final class SpannerGrpc.SpannerBlockingStub
extends io.grpc.stub.AbstractStub<SpannerGrpc.SpannerBlockingStub>

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

Method Summary

Modifier and Type	Method and Description
Transaction	beginTransaction(BeginTransactionRequest request) Begins a new transaction.
protected SpannerGrpc.SpannerBlockingStub	build(io.grpc.Channel channel, io.grpc.CallOptions callOptions)
CommitResponse	commit(CommitRequest request) Commits a transaction.
Session	createSession(CreateSessionRequest request) Creates a new session.
Empty	deleteSession(DeleteSessionRequest request) Ends a session, releasing server resources associated with it.
ResultSet	executeSql(ExecuteSqlRequest request) Executes an SQL query, returning all rows in a single reply.
java.util.Iterator<PartialResultSet>	executeStreamingSql(ExecuteSqlRequest request) Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result set as a stream.
Session	getSession(GetSessionRequest request) Gets a session.
ListSessionsResponse	listSessions(ListSessionsRequest request) Lists all sessions in a given database.
PartitionResponse	partitionQuery(PartitionQueryRequest request) Creates a set of partition tokens that can be used to execute a query operation in parallel.
PartitionResponse	partitionRead(PartitionReadRequest request) Creates a set of partition tokens that can be used to execute a read operation in parallel.
ResultSet	read(ReadRequest request) Reads rows from the database using key lookups and scans, as a simple key/value style alternative to [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].
Empty	rollback(RollbackRequest request) Rolls back a transaction, releasing any locks it holds.
java.util.Iterator<PartialResultSet>	streamingRead(ReadRequest request) Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a stream.

Methods inherited from class io.grpc.stub.AbstractStub

getCallOptions, getChannel, withCallCredentials, withChannel, withCompression, withDeadline, withDeadlineAfter, withExecutor, withInterceptors, withMaxInboundMessageSize, withMaxOutboundMessageSize, withOption, withWaitForReady

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

build

protected SpannerGrpc.SpannerBlockingStub build(io.grpc.Channel channel,
                                                io.grpc.CallOptions callOptions)

Specified by:

build in class io.grpc.stub.AbstractStub<SpannerGrpc.SpannerBlockingStub>

createSession

public Session createSession(CreateSessionRequest request)

 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.
 Cloud Spanner limits the number of sessions that can exist at any given
 time; thus, it is a good idea to delete idle and/or unneeded sessions.
 Aside from explicit deletes, Cloud Spanner can delete sessions for which 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, e.g., `"SELECT 1"`.
 

getSession

public Session getSession(GetSessionRequest request)

 Gets a session. Returns `NOT_FOUND` if the session does not exist.
 This is mainly useful for determining whether a session is still
 alive.
 

listSessions

public ListSessionsResponse listSessions(ListSessionsRequest request)

 Lists all sessions in a given database.
 

deleteSession

public Empty deleteSession(DeleteSessionRequest request)

 Ends a session, releasing server resources associated with it.
 

executeSql

public ResultSet executeSql(ExecuteSqlRequest request)

 Executes an SQL query, returning all rows in a single reply. This
 method cannot 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.
 Queries inside read-write transactions might return `ABORTED`. If
 this occurs, the application should restart the transaction from
 the beginning. See [Transaction][google.spanner.v1.Transaction] for more details.
 Larger result sets can be fetched in streaming fashion by calling
 [ExecuteStreamingSql][google.spanner.v1.Spanner.ExecuteStreamingSql] instead.
 

executeStreamingSql

public java.util.Iterator<PartialResultSet> executeStreamingSql(ExecuteSqlRequest request)

 Like [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql], except returns the result
 set as a stream. Unlike [ExecuteSql][google.spanner.v1.Spanner.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.
 

read

public ResultSet read(ReadRequest request)

 Reads rows from the database using key lookups and scans, as a
 simple key/value style alternative to
 [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql].  This method cannot 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][google.spanner.v1.Transaction] for more details.
 Larger result sets can be yielded in streaming fashion by calling
 [StreamingRead][google.spanner.v1.Spanner.StreamingRead] instead.
 

streamingRead

public java.util.Iterator<PartialResultSet> streamingRead(ReadRequest request)

 Like [Read][google.spanner.v1.Spanner.Read], except returns the result set as a
 stream. Unlike [Read][google.spanner.v1.Spanner.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.
 

beginTransaction

public Transaction beginTransaction(BeginTransactionRequest request)

 Begins a new transaction. This step can often be skipped:
 [Read][google.spanner.v1.Spanner.Read], [ExecuteSql][google.spanner.v1.Spanner.ExecuteSql] and
 [Commit][google.spanner.v1.Spanner.Commit] can begin a new transaction as a
 side-effect.
 

commit

public CommitResponse commit(CommitRequest request)

 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 re-attempt
 the transaction from the beginning, re-using the same session.
 

rollback

public Empty rollback(RollbackRequest request)

 Rolls back a transaction, releasing any locks it holds. It is a good
 idea to call this for any transaction that includes one or more
 [Read][google.spanner.v1.Spanner.Read] or [ExecuteSql][google.spanner.v1.Spanner.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 is not
 found. `Rollback` never returns `ABORTED`.
 

partitionQuery

public PartitionResponse partitionQuery(PartitionQueryRequest request)

 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][google.spanner.v1.Spanner.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 or begins a new transaction.
 

partitionRead

public PartitionResponse partitionRead(PartitionReadRequest request)

 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][google.spanner.v1.Spanner.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.
 Partition tokens become invalid when the session used to create them
 is deleted or begins a new transaction.