Package org.apache.calcite.avatica.remote

Interface Handler<T>

Type Parameters:

T - The type this handler accepts and returns

All Known Implementing Classes:

AbstractHandler, JsonHandler, ProtobufHandler

public interface Handler<T>

API for text request-response calls to an Avatica server.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	Handler.HandlerResponse<T>	Struct that encapsulates the context of the result of a request to Avatica.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	HANDLER_SERIALIZATION_METRICS_NAME
static final int	HTTP_INTERNAL_SERVER_ERROR
static final int	HTTP_OK
static final int	HTTP_UNAUTHENTICATED
static final int	HTTP_UNAUTHORIZED

Method Summary

Modifier and Type	Method	Description
Handler.HandlerResponse<T>	apply(T request)
void	setRpcMetadata(Service.RpcMetadataResponse metadata)	Sets some general server information to return to the client in all responses.

Field Details

HTTP_OK

static final int HTTP_OK

See Also:

• Constant Field Values

HTTP_UNAUTHENTICATED

static final int HTTP_UNAUTHENTICATED

See Also:

• Constant Field Values

HTTP_UNAUTHORIZED

static final int HTTP_UNAUTHORIZED

See Also:

• Constant Field Values

HTTP_INTERNAL_SERVER_ERROR

static final int HTTP_INTERNAL_SERVER_ERROR

See Also:

• Constant Field Values

HANDLER_SERIALIZATION_METRICS_NAME

static final String HANDLER_SERIALIZATION_METRICS_NAME

See Also:

• Constant Field Values

Method Details

apply

Handler.HandlerResponse<T> apply(T request)

setRpcMetadata

void setRpcMetadata(Service.RpcMetadataResponse metadata)

Sets some general server information to return to the client in all responses.

Parameters:

metadata - Server-wide information