ostore.read
Class ReplicaSliceReadResp

java.lang.Object
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  +--ostore.replica.ReplicaResp
        |
        +--ostore.read.ReplicaReadResp
              |
              +--ostore.read.ReplicaSliceReadResp

All Implemented Interfaces:

QueueElementIF, QuickSerializable

public class ReplicaSliceReadResp

extends ReplicaReadResp

Events sent from the ReplicaStage to the ClientStage responding to ReplicaSliceReadReq events.

Version:

$Id: ReplicaSliceReadResp.java,v 1.19 2002/07/29 18:48:53 geels Exp $

Author:

Dennis Geels

Field Summary

protected SortedMap

blocks A VID->VerifiableBlock map containing the blocks that make up the slice read, or null.

Fields inherited from class ostore.read.ReplicaReadResp

missing, read, version

Fields inherited from class ostore.replica.ReplicaResp

digest, error_code, local, NO_ERROR, NOT_OPEN, OBJECT_NOT_FOUND, READ_ERROR, req_digest, target, VERSION_PREDICATE_NOT_SATISFIED

Constructor Summary

ReplicaSliceReadResp(InputBuffer buffer)
Constructs a ReplicaSliceReadResp from its serialized form.

ReplicaSliceReadResp(ReplicaReadReq req, int error_code)
Constructs a new (failed) ReplicaSliceReadResp.

ReplicaSliceReadResp(ReplicaReadReq req, VID version, Selection read, Selection missing, Map blocks)
Constructs a new (successful) ReplicaSliceReadResp.

Method Summary

Map	get_blocks() Returns the VID->VerifiableBlock map containing the blocks make up the slice that was read.
void	serialize(OutputBuffer buffer) Add the object to the buffer.

Methods inherited from class ostore.read.ReplicaReadResp

get_missing, get_read, get_version, toString

Methods inherited from class ostore.replica.ReplicaResp

get_digest, get_error_code, get_req_digest, get_target, hashCode, is_local, successful

Methods inherited from class java.lang.Object

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

Field Detail

blocks

protected SortedMap blocks

A VID->VerifiableBlock map containing the blocks that make up the slice read, or null.

blocks != null iff this.successful().

The hashCode of responses depend on their digest. Therefore we keep this map sorted, to ensure a deterministic serialization.

Constructor Detail

ReplicaSliceReadResp

public ReplicaSliceReadResp(ReplicaReadReq req,
                            VID version,
                            Selection read,
                            Selection missing,
                            Map blocks)

Constructs a new (successful) ReplicaSliceReadResp.

If blocks is not already a SortedMap, it is copied into one.

ReplicaSliceReadResp

public ReplicaSliceReadResp(ReplicaReadReq req,
                            int error_code)

Constructs a new (failed) ReplicaSliceReadResp.

ReplicaSliceReadResp

public ReplicaSliceReadResp(InputBuffer buffer)
                     throws QSException

Constructs a ReplicaSliceReadResp from its serialized form.

Method Detail

get_blocks

public Map get_blocks()

Returns the VID->VerifiableBlock map containing the blocks make up the slice that was read.

serialize

public void serialize(OutputBuffer buffer)

Description copied from interface: QuickSerializable

Add the object to the buffer.

Specified by:

serialize in interface QuickSerializable

Overrides:

serialize in class ReplicaReadResp

Parameters:

buffer - the output buffer to add the object to