Class DatastoreGrpc.DatastoreFutureStub (3.1.0) 

public static final class DatastoreGrpc.DatastoreFutureStub extends AbstractFutureStub<DatastoreGrpc.DatastoreFutureStub>

A stub to allow clients to do ListenableFuture-style rpc calls to service Datastore.

Each RPC normalizes the partition IDs of the keys in its input entities, and always returns entities with keys with normalized partition IDs. This applies to all keys and entities, including those in values, except keys with both an empty path and an empty or unset partition ID. Normalization of input keys sets the project ID (if not already set) to the project ID from the request.

Inheritance

java.lang.Object > io.grpc.stub.AbstractStub > io.grpc.stub.AbstractFutureStub > DatastoreGrpc.DatastoreFutureStub

Methods

allocateIds(AllocateIdsRequest request)

public ListenableFuture<AllocateIdsResponse> allocateIds(AllocateIdsRequest request)

Allocates IDs for the given keys, which is useful for referencing an entity before it is inserted.

Parameter
Name Description
request AllocateIdsRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<AllocateIdsResponse>

beginTransaction(BeginTransactionRequest request)

public ListenableFuture<BeginTransactionResponse> beginTransaction(BeginTransactionRequest request)

Begins a new transaction.

Parameter
Name Description
request BeginTransactionRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<BeginTransactionResponse>

build(Channel channel, CallOptions callOptions)

protected DatastoreGrpc.DatastoreFutureStub build(Channel channel, CallOptions callOptions)
Parameters
Name Description
channel io.grpc.Channel
callOptions io.grpc.CallOptions
Returns
Type Description
DatastoreGrpc.DatastoreFutureStub
Overrides
io.grpc.stub.AbstractStub.build(io.grpc.Channel,io.grpc.CallOptions)

commit(CommitRequest request)

public ListenableFuture<CommitResponse> commit(CommitRequest request)

Commits a transaction, optionally creating, deleting or modifying some entities.

Parameter
Name Description
request CommitRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<CommitResponse>

lookup(LookupRequest request)

public ListenableFuture<LookupResponse> lookup(LookupRequest request)

Looks up entities by key.

Parameter
Name Description
request LookupRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<LookupResponse>

reserveIds(ReserveIdsRequest request)

public ListenableFuture<ReserveIdsResponse> reserveIds(ReserveIdsRequest request)

Prevents the supplied keys' IDs from being auto-allocated by Cloud Datastore.

Parameter
Name Description
request ReserveIdsRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<ReserveIdsResponse>

rollback(RollbackRequest request)

public ListenableFuture<RollbackResponse> rollback(RollbackRequest request)

Rolls back a transaction.

Parameter
Name Description
request RollbackRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<RollbackResponse>

runAggregationQuery(RunAggregationQueryRequest request)

public ListenableFuture<RunAggregationQueryResponse> runAggregationQuery(RunAggregationQueryRequest request)

Runs an aggregation query.

Parameter
Name Description
request RunAggregationQueryRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<RunAggregationQueryResponse>

runQuery(RunQueryRequest request)

public ListenableFuture<RunQueryResponse> runQuery(RunQueryRequest request)

Queries for entities.

Parameter
Name Description
request RunQueryRequest
Returns
Type Description
com.google.common.util.concurrent.ListenableFuture<RunQueryResponse>