org.jgroups.protocols
Class PingHeader

java.lang.Object
  org.jgroups.Header
      org.jgroups.protocols.PingHeader

All Implemented Interfaces:

Streamable

public class PingHeader
extends Header

Author:

Bela Ban

Field Summary

java.lang.String	cluster_name
PingData	data
static byte	GET_MBRS_REQ
static byte	GET_MBRS_RSP
byte	type
ViewId	view_id

Constructor Summary

PingHeader()

PingHeader(byte type, PingData data)

PingHeader(byte type, PingData data, java.lang.String cluster_name)

PingHeader(byte type, java.lang.String cluster_name)

Method Summary

void	readFrom(java.io.DataInput instream) Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
int	size() To be implemented by subclasses.
java.lang.String	toString()
void	writeTo(java.io.DataOutput outstream) Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

GET_MBRS_REQ

public static final byte GET_MBRS_REQ

See Also:

Constant Field Values

GET_MBRS_RSP

public static final byte GET_MBRS_RSP

See Also:

Constant Field Values

type

public byte type

data

public PingData data

cluster_name

public java.lang.String cluster_name

view_id

public ViewId view_id

Constructor Detail

PingHeader

public PingHeader()

PingHeader

public PingHeader(byte type,
                  java.lang.String cluster_name)

PingHeader

public PingHeader(byte type,
                  PingData data)

PingHeader

public PingHeader(byte type,
                  PingData data,
                  java.lang.String cluster_name)

Method Detail

size

public int 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.

Specified by:

size in class Header

toString

public java.lang.String toString()

Overrides:

toString in class Header

writeTo

public void writeTo(java.io.DataOutput outstream)
             throws java.lang.Exception

Description copied from interface: Streamable

Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

Throws:

java.lang.Exception

readFrom

public void readFrom(java.io.DataInput instream)
              throws java.lang.Exception

Description copied from interface: Streamable

Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

Throws:

java.lang.Exception