org.apache.river.discovery

Interface MulticastAnnouncementDecoder

All Superinterfaces:

DiscoveryFormatProvider

All Known Subinterfaces:

DelayedMulticastAnnouncementDecoder

public interface MulticastAnnouncementDecoder
extends DiscoveryFormatProvider

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

Since:

2.0

Author:

Sun Microsystems, Inc.

Method Summary

Modifier and Type	Method and Description
MulticastAnnouncement	decodeMulticastAnnouncement(ByteBuffer buf, InvocationConstraints constraints) Decodes the multicast announcement data contained in the given buffer in a manner that satisfies the specified absolute constraints, returning a MulticastAnnouncement instance that contains the decoded data.

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

getFormatName

Method Detail

decodeMulticastAnnouncement

MulticastAnnouncement decodeMulticastAnnouncement(ByteBuffer buf,
                                                  InvocationConstraints constraints)
                                           throws IOException

Decodes the multicast announcement data contained in the given buffer in a manner that satisfies the specified absolute constraints, returning a MulticastAnnouncement 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 announcement data must begin at position zero of buf.

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

Returns:

the decoded multicast announcement 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

NullPointerException - if buf is null