com.fr.third.jgroups.protocols.pbcast

类 DeltaView

java.lang.Object

com.fr.third.jgroups.View

com.fr.third.jgroups.protocols.pbcast.DeltaView

所有已实现的接口:

Streamable, java.lang.Comparable<View>, java.lang.Iterable<Address>

public class DeltaView
extends View

Subclass of View with a null members field. Adds an array for left members and one for joined members compared to the previous view. A recipient receiving a DeltaView can construct a new view by grabbing the view corresponding to View.view_id, removing the left members and adding the new members.

This class is only used with VIEW messages in GMS to install new views (not merge views). When a VIEW message is received, the DeltaView is read from the GMS.GmsHeader, a View is constructured and the header discarded. Therefore, the lifetime of a DeltaView is short: it is created and set in a GmsHeader, the header is then marshalled. On the receiving side, the DeltaView is created from the stream, a View is created and the DeltaView discarded again.

Instances of this class are created by CoordGmsImpl.handleMembershipChange(java.util.Collection).

JIRA issue: https://issues.jboss.org/browse/JGRP-1354

从以下版本开始:

3.4

作者:

Bela Ban

字段概要

字段

限定符和类型	字段和说明
protected Address[]	left_members Members which left the view corresponding to ref_view_id
protected Address[]	new_members Members which joined the view corresponding to ref_view_id
protected ViewId	ref_view_id The fields left_members and new_members refer to the view corresponding to ref_view_id

从类继承的字段 com.fr.third.jgroups.View

members, suppress_view_size, view_id

构造器概要

构造器

构造器和说明
DeltaView()
DeltaView(ViewId view_id, ViewId ref_view_id, Address[] left_members, Address[] new_members)

方法概要

方法

限定符和类型	方法和说明
Address[]	getLeftMembers()
Address[]	getNewMembers()
ViewId	getRefViewId()
java.util.Iterator<Address>	iterator()
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	serializedSize()
java.lang.String	toString()
void	writeTo(java.io.DataOutput out) Write the entire state of the current object (including superclasses) to outstream.

从类继承的方法 com.fr.third.jgroups.View

compareTo, containsMember, copy, create, deepEquals, diff, equals, getCreator, getMembers, getMembersRaw, getVid, getViewId, hashCode, leftMembers, size

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

ref_view_id

protected ViewId ref_view_id

The fields left_members and new_members refer to the view corresponding to ref_view_id

left_members

protected Address[] left_members

Members which left the view corresponding to ref_view_id

new_members

protected Address[] new_members

Members which joined the view corresponding to ref_view_id

构造器详细资料

DeltaView

public DeltaView()

DeltaView

public DeltaView(ViewId view_id,
         ViewId ref_view_id,
         Address[] left_members,
         Address[] new_members)

方法详细资料

getRefViewId

public ViewId getRefViewId()

getLeftMembers

public Address[] getLeftMembers()

getNewMembers

public Address[] getNewMembers()

serializedSize

public int serializedSize()

覆盖:

serializedSize 在类中 View

writeTo

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

从接口复制的说明: Streamable

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

指定者:

writeTo 在接口中 Streamable

覆盖:

writeTo 在类中 View

抛出:

java.lang.Exception

readFrom

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

从接口复制的说明: Streamable

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

指定者:

readFrom 在接口中 Streamable

覆盖:

readFrom 在类中 View

抛出:

java.lang.Exception

iterator

public java.util.Iterator<Address> iterator()

指定者:

iterator 在接口中 java.lang.Iterable<Address>

覆盖:

iterator 在类中 View

toString

public java.lang.String toString()

覆盖:

toString 在类中 View