Package io.deephaven.server.table.ops

Class HeadOrTailByGrpcImpl

java.lang.Object

io.deephaven.server.table.ops.GrpcTableOperation<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest>

io.deephaven.server.table.ops.HeadOrTailByGrpcImpl

Direct Known Subclasses:

HeadOrTailByGrpcImpl.HeadByGrpcImpl, HeadOrTailByGrpcImpl.TailByGrpcImpl

public abstract class HeadOrTailByGrpcImpl
extends GrpcTableOperation<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest>

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HeadOrTailByGrpcImpl.HeadByGrpcImpl
protected static interface	HeadOrTailByGrpcImpl.RealTableOperation
static class	HeadOrTailByGrpcImpl.TailByGrpcImpl

Nested classes/interfaces inherited from class io.deephaven.server.table.ops.GrpcTableOperation

GrpcTableOperation.MultiDependencyFunction<T>, GrpcTableOperation.PermissionFunction<T>

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	HeadOrTailByGrpcImpl(@NotNull GrpcTableOperation.PermissionFunction<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest> permission, @NotNull Function<io.deephaven.proto.backplane.grpc.BatchTableRequest.Operation,io.deephaven.proto.backplane.grpc.HeadOrTailByRequest> getRequest, @NotNull HeadOrTailByGrpcImpl.RealTableOperation realTableOperation, @NotNull io.deephaven.engine.validation.ColumnExpressionValidator columnExpressionValidator)

Method Summary

Modifier and Type	Method	Description
io.deephaven.engine.table.Table	create(io.deephaven.proto.backplane.grpc.HeadOrTailByRequest request, List<SessionState.ExportObject<io.deephaven.engine.table.Table>> sourceTables)	This actually performs the operation.
void	validateRequest(io.deephaven.proto.backplane.grpc.HeadOrTailByRequest request)	This method validates preconditions of the request.

Methods inherited from class io.deephaven.server.table.ops.GrpcTableOperation

checkPermission, getRequestFromOperation, getResultTicket, getTableReferences

Methods inherited from class java.lang.Object

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

Constructor Details

HeadOrTailByGrpcImpl

protected HeadOrTailByGrpcImpl(@NotNull
 @NotNull GrpcTableOperation.PermissionFunction<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest> permission,
 @NotNull
 @NotNull Function<io.deephaven.proto.backplane.grpc.BatchTableRequest.Operation,io.deephaven.proto.backplane.grpc.HeadOrTailByRequest> getRequest,
 @NotNull
 @NotNull HeadOrTailByGrpcImpl.RealTableOperation realTableOperation,
 @NotNull
 @NotNull io.deephaven.engine.validation.ColumnExpressionValidator columnExpressionValidator)

Method Details

validateRequest

public void validateRequest(io.deephaven.proto.backplane.grpc.HeadOrTailByRequest request)
                     throws io.grpc.StatusRuntimeException

Description copied from class: GrpcTableOperation

This method validates preconditions of the request.

Overrides:

validateRequest in class GrpcTableOperation<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest>

Parameters:

request - the original request from the user

Throws:

io.grpc.StatusRuntimeException - on the first failed precondition

create

public io.deephaven.engine.table.Table create(io.deephaven.proto.backplane.grpc.HeadOrTailByRequest request,
 List<SessionState.ExportObject<io.deephaven.engine.table.Table>> sourceTables)

Description copied from class: GrpcTableOperation

This actually performs the operation. It will typically be performed after the

Specified by:

create in class GrpcTableOperation<io.deephaven.proto.backplane.grpc.HeadOrTailByRequest>

Parameters:

request - the original request from the user

sourceTables - the source tables that this operation may or may not need

Returns:

the resulting table