org.jgroups.protocols
Class SEQUENCER.SequencerHeader

java.lang.Object
  org.jgroups.Header
      org.jgroups.protocols.SEQUENCER.SequencerHeader

All Implemented Interfaces:

Streamable

Enclosing class:

SEQUENCER

public static class SEQUENCER.SequencerHeader
extends Header

Field Summary

protected static byte	BCAST
protected static byte	FLUSH
protected boolean	flush_ack
protected static byte	FORWARD
protected long	seqno
protected byte	type
protected static byte	WRAPPED_BCAST

Constructor Summary

SEQUENCER.SequencerHeader()

SEQUENCER.SequencerHeader(byte type)

SEQUENCER.SequencerHeader(byte type, long seqno)

Method Summary

long	getSeqno()
protected java.lang.String	printType()
void	readFrom(java.io.DataInput in) 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 out) 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

FORWARD

protected static final byte FORWARD

See Also:

Constant Field Values

FLUSH

protected static final byte FLUSH

See Also:

Constant Field Values

BCAST

protected static final byte BCAST

See Also:

Constant Field Values

WRAPPED_BCAST

protected static final byte WRAPPED_BCAST

See Also:

Constant Field Values

type

protected byte type

seqno

protected long seqno

flush_ack

protected boolean flush_ack

Constructor Detail

SEQUENCER.SequencerHeader

public SEQUENCER.SequencerHeader()

SEQUENCER.SequencerHeader

public SEQUENCER.SequencerHeader(byte type)

SEQUENCER.SequencerHeader

public SEQUENCER.SequencerHeader(byte type,
                                 long seqno)

Method Detail

getSeqno

public long getSeqno()

toString

public java.lang.String toString()

Overrides:

toString in class Header

printType

protected final java.lang.String printType()

writeTo

public void writeTo(java.io.DataOutput out)
             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 in)
              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

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