org.jgroups.protocols.pbcast
Class NakAckHeader

java.lang.Object
  extended byorg.jgroups.Header
      extended byorg.jgroups.protocols.pbcast.NakAckHeader
All Implemented Interfaces:
java.lang.Cloneable, java.io.Externalizable, java.io.Serializable

public class NakAckHeader
extends Header

See Also:
Serialized Form

Field Summary
static int MSG
           
static int XMIT_REQ
           
static int XMIT_RSP
           
 
Fields inherited from class org.jgroups.Header
HDR_OVERHEAD
 
Constructor Summary
NakAckHeader()
           
NakAckHeader(int type, long seqno)
          Constructor for regular messages
NakAckHeader(int type, long low, long high)
          Constructor for retransmit requests/responses (low and high define the range of msgs)
 
Method Summary
 NakAckHeader copy()
           
 void readExternal(java.io.ObjectInput in)
           
 long size()
          To be implemented by subclasses.
 java.lang.String toString()
           
static java.lang.String type2Str(int t)
           
 void writeExternal(java.io.ObjectOutput out)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

MSG

public static final int MSG
See Also:
Constant Field Values

XMIT_REQ

public static final int XMIT_REQ
See Also:
Constant Field Values

XMIT_RSP

public static final int XMIT_RSP
See Also:
Constant Field Values
Constructor Detail

NakAckHeader

public NakAckHeader()

NakAckHeader

public NakAckHeader(int type,
                    long seqno)
Constructor for regular messages


NakAckHeader

public NakAckHeader(int type,
                    long low,
                    long high)
Constructor for retransmit requests/responses (low and high define the range of msgs)

Method Detail

size

public long size()
Description copied from class: Header
To be implemented by subclasses. Return the size of this object for the serialized version of it. I.e. how many bytes this object takes when flattened into a buffer. This may be different for each instance, or can be the same. This may also just be an estimation. E.g. FRAG uses it on Message to determine whether or not to fragment the message. Fragmentation itself will be accurate, because the entire message will actually be serialized into a byte buffer, so we can determine the exact size.

Overrides:
size in class Header

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException
Throws:
java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException
Throws:
java.io.IOException
java.lang.ClassNotFoundException

copy

public NakAckHeader copy()

type2Str

public static java.lang.String type2Str(int t)

toString

public java.lang.String toString()
Overrides:
toString in class Header


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