com.caucho.mpc.stream
Interface MpcStream

All Known Implementing Classes:

AbstractMpcStream

public interface MpcStream

Primary stream handling all message packets. Actors send packets to the Broker for delivery to other Actors. Messages are divided into two groups:

• message - unidirectional messages
• query - RPC call/reply packets

Method Summary

java.lang.String	getAddress() Returns the address of the ActorHolder at the end of the stream.
boolean	isClosed() Tests if the stream is closed.
void	message(java.lang.String to, java.lang.String from, java.lang.String methodName, java.lang.Object... args) Sends a unidirectional message to an ActorHolder, addressed by the Actor's address.
void	messageError(java.lang.String to, java.lang.String from, java.lang.String methodName, java.lang.Object[] args, MpcError error) Sends a message error to an ActorHolder, addressed by the Actor's address.
void	query(long id, java.lang.String to, java.lang.String from, java.lang.String methodName, java.lang.Object... args) Sends a query/RPCinformation call The receiver of a query acts as a service and the caller acts as a client.
void	queryError(long id, java.lang.String to, java.lang.String from, java.lang.String methodName, java.lang.Object[] args, MpcError error) Sends a query error from a failed query.
void	queryResult(long id, java.lang.String to, java.lang.String from, java.lang.String methodName, java.lang.Object result) Sends a query response for a query

Method Detail

getAddress

java.lang.String getAddress()

Returns the address of the ActorHolder at the end of the stream.

isClosed

boolean isClosed()

Tests if the stream is closed.

message

void message(java.lang.String to,
             java.lang.String from,
             java.lang.String methodName,
             java.lang.Object... args)

Sends a unidirectional message to an ActorHolder, addressed by the Actor's address.

Parameters:

to - the target actor's address

from - the source actor's address

payload - the message payload

messageError

void messageError(java.lang.String to,
                  java.lang.String from,
                  java.lang.String methodName,
                  java.lang.Object[] args,
                  MpcError error)

Sends a message error to an ActorHolder, addressed by the Actor's address. Actor protocols may choose to send error messages if a message fails for some reason. In general, Actors should not rely on the delivery of error messages. If an error return is required, use an RPC query instead.

Parameters:

to - the target actor's address

from - the source actor's address

payload - the message payload

error - the message error

query

void query(long id,
           java.lang.String to,
           java.lang.String from,
           java.lang.String methodName,
           java.lang.Object... args)

Sends a query/RPCinformation call The receiver of a query acts as a service and the caller acts as a client. Because BAM Actors are symmetrical, all Actors can act as services and clients for different RPC calls. The stream MUST send a queryResult or queryError to the client using the same id, because RPC clients rely on a response.

Parameters:

id - the query identifier used to match requests with responses

to - the service actor's address

from - the client actor's address

payload - the query payload

queryResult

void queryResult(long id,
                 java.lang.String to,
                 java.lang.String from,
                 java.lang.String methodName,
                 java.lang.Object result)

Sends a query response for a query

Parameters:

id - the query identifier used to match requests with responses

to - the client actor's address

from - the service actor's address

payload - the result payload

queryError

void queryError(long id,
                java.lang.String to,
                java.lang.String from,
                java.lang.String methodName,
                java.lang.Object[] args,
                MpcError error)

Sends a query error from a failed query.

Parameters:

id - the query identifier used to match requests with responses

to - the client actor's address

from - the service actor's address

methodName - the name of the called method

error - additional error information