org.jgroups.protocols.pbcast
Class STATE_TRANSFER.StateHeader

java.lang.Object
  extended byorg.jgroups.Header
      extended byorg.jgroups.protocols.pbcast.STATE_TRANSFER.StateHeader
All Implemented Interfaces:
java.io.Externalizable, java.io.Serializable, Streamable
Enclosing class:
STATE_TRANSFER

public static class STATE_TRANSFER.StateHeader
extends Header
implements Streamable

Wraps data for a state request/response. Note that for a state response the actual state will not

See Also:
Serialized Form

Field Summary
static byte STATE_REQ
           
static byte STATE_RSP
           
 
Fields inherited from class org.jgroups.Header
HDR_OVERHEAD
 
Constructor Summary
STATE_TRANSFER.StateHeader()
           
STATE_TRANSFER.StateHeader(byte type, Address sender, long id, Digest digest)
           
 
Method Summary
 boolean equals(java.lang.Object o)
           
 Digest getDigest()
           
 int getType()
           
 int hashCode()
           
 void readExternal(java.io.ObjectInput in)
           
 void readFrom(java.io.DataInputStream in)
          Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
 long size()
          To be implemented by subclasses.
 java.lang.String toString()
           
 void writeExternal(java.io.ObjectOutput out)
           
 void writeTo(java.io.DataOutputStream out)
          Write the entire state of the current object (including superclasses) to outstream.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

STATE_REQ

public static final byte STATE_REQ
See Also:
Constant Field Values

STATE_RSP

public static final byte STATE_RSP
See Also:
Constant Field Values
Constructor Detail

STATE_TRANSFER.StateHeader

public STATE_TRANSFER.StateHeader()

STATE_TRANSFER.StateHeader

public STATE_TRANSFER.StateHeader(byte type,
                                  Address sender,
                                  long id,
                                  Digest digest)
Method Detail

getType

public int getType()

getDigest

public Digest getDigest()

equals

public boolean equals(java.lang.Object o)

hashCode

public int hashCode()

toString

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

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException
Specified by:
writeExternal in interface java.io.Externalizable
Throws:
java.io.IOException

readExternal

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

writeTo

public void writeTo(java.io.DataOutputStream out)
             throws java.io.IOException
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

Specified by:
writeTo in interface Streamable
Throws:
java.io.IOException

readFrom

public void readFrom(java.io.DataInputStream in)
              throws java.io.IOException,
                     java.lang.IllegalAccessException,
                     java.lang.InstantiationException
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

Specified by:
readFrom in interface Streamable
Throws:
java.io.IOException
java.lang.IllegalAccessException
java.lang.InstantiationException

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


Copyright ? 1998-2005 Bela Ban. All Rights Reserved.