ostore.read
Class HandleStoreReadResp

java.lang.Object
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  +--ostore.read.ReadResp
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        +--ostore.read.HandleStoreReadResp

All Implemented Interfaces:

QueueElementIF, QuickSerializable

public class HandleStoreReadResp

extends ReadResp

Events sent from the ReadStage to the ReplicaStage responding to SliceReadReq events.

Version:

$Id: HandleStoreReadResp.java,v 1.9 2002/07/29 18:48:53 geels Exp $

Author:

Dennis Geels

Field Summary

protected HandleStore

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

Fields inherited from class ostore.read.ReadResp

digest, error_code, missing, NO_ERROR, read, READ_ERROR, req_digest

Constructor Summary

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

HandleStoreReadResp(ReadReq req, int error_code)
Constructs a new (failed) HandleStoreReadResp.

HandleStoreReadResp(ReadReq req, Selection read, Selection missing, HandleStore handleStore)
Constructs a new (successful) HandleStoreReadResp.

Method Summary

HandleStore	getHandleStore() Returns the VID->block map containing the blocks that make up the slice read.
void	serialize(OutputBuffer buffer) Add the object to the buffer.

Methods inherited from class ostore.read.ReadResp

get_digest, get_error_code, get_missing, get_read, get_req_digest, get_req_seq_num, hashCode, successful, toString

Methods inherited from class java.lang.Object

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

Field Detail

_handleStore

protected HandleStore _handleStore

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

HandleStoreReadResp

public HandleStoreReadResp(ReadReq req,
                           Selection read,
                           Selection missing,
                           HandleStore handleStore)

Constructs a new (successful) HandleStoreReadResp.

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

HandleStoreReadResp

public HandleStoreReadResp(ReadReq req,
                           int error_code)

Constructs a new (failed) HandleStoreReadResp.

HandleStoreReadResp

public HandleStoreReadResp(InputBuffer buffer)
                    throws QSException

Constructs a HandleStoreReadResp from its serialized form.

Method Detail

getHandleStore

public HandleStore getHandleStore()

Returns the VID->block map containing the blocks that make up the slice 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 ReadResp

Parameters:

buffer - the output buffer to add the object to