org.apache.river.discovery

Interface MulticastRequestDecoder

All Superinterfaces:

DiscoveryFormatProvider

All Known Subinterfaces:

DelayedMulticastRequestDecoder

public interface MulticastRequestDecoder
extends DiscoveryFormatProvider

Interface implemented by classes which decode multicast request data according to discovery protocol formats.

Since:

2.0

Author:

Sun Microsystems, Inc.

Method Summary

Modifier and Type	Method and Description
MulticastRequest	decodeMulticastRequest(ByteBuffer buf, InvocationConstraints constraints, ClientSubjectChecker checker) Decodes the multicast request data contained in the given buffer in a manner that satisfies the specified absolute constraints and client subject checker (if any), returning a MulticastRequest instance that contains the decoded data.

Methods inherited from interface org.apache.river.discovery.DiscoveryFormatProvider

getFormatName

Method Detail

decodeMulticastRequest

MulticastRequest decodeMulticastRequest(ByteBuffer buf,
                                        InvocationConstraints constraints,
                                        ClientSubjectChecker checker)
                                 throws IOException

Decodes the multicast request data contained in the given buffer in a manner that satisfies the specified absolute constraints and client subject checker (if any), returning a MulticastRequest instance that contains the decoded data. null constraints are considered equivalent to empty constraints. All the specified constraints are checked before this method returns.

Parameters:

buf - a buffer containing the packet data to decode. The multicast request data must begin at position zero of buf.

constraints - the constraints to apply when decoding the data, or null

checker - the object to use to check the client subject, or null

Returns:

the decoded multicast request data

Throws:

IOException - if an error occurs in interpreting the data

UnsupportedConstraintException - if unable to satisfy the specified constraints

SecurityException - if the given constraints cannot be satisfied due to insufficient caller permissions, or if the client subject check fails

NullPointerException - if buf is null