ostore.archive.events
Class GenerateFragsChkptReq

java.lang.Object
  |
  +--ostore.archive.events.GenerateFragsChkptReq

All Implemented Interfaces:

QueueElementIF, QuickSerializable

public class GenerateFragsChkptReq

extends Object

implements QueueElementIF, QuickSerializable

GenerateFragsChkptReq is an event class that generates Fragments for a version of an object or checkpoints the version.

USAGE

The required field are thisRootBlock (CacheableIdentity of root block), numFragments (number of Fragments generated for block), inverseRate (inverse rate of encoding), erasureType (code for the type of erasure code to use).

NOTE: for copy-on-write only the blocks with null GUID's will be fragmented (archived).

Version:

$Id: GenerateFragsChkptReq.java,v 1.18 2003/11/17 23:52:43 emilong Exp $

Author:

Hakim Weatherspoon

See Also:

GenerateFragsChkptResp, GenerateFragsChkptReq, Fragment, Erasure

Field Summary

int	erasureType erasureType == code for the type of erasure code to use.
HandleStore	handleStore HandleStore of VerifiableBlocks to Fragment.
int	inverseRate inverseRate == rate of encoding.
int	numFragments numFragments == number of fragments generated for block.
CacheableIdentity	thisRootBlock thisRootBlock == CacheableIdentity of root block.

Constructor Summary

GenerateFragsChkptReq()
Constructor: Initializes instance variables to null.

GenerateFragsChkptReq(CacheableIdentity rootBlock, int numFrags, int inverseR, int erasureT)
Constructor.

GenerateFragsChkptReq(CacheableIdentity rootBlock, int numFrags, int inverseR, int erasureT, HandleStore store)
Constructor.

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

Method Summary

HandleStore	getHandleStore() getHandleStore returns the HandleStore of VerifiableBlocks to Fragment.
void	serialize(OutputBuffer buffer) Specified by ostore.util.QuickSerializable
void	setHandleStore(HandleStore store) setHandleStore sets the HandleStore belonging to the VerifiableBlocks to Fragment.
String	toString() Specified by java.lang.Object

Methods inherited from class java.lang.Object

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

Field Detail

thisRootBlock

public CacheableIdentity thisRootBlock

thisRootBlock == CacheableIdentity of root block.

numFragments

public int numFragments

numFragments == number of fragments generated for block.

inverseRate

public int inverseRate

inverseRate == rate of encoding.

erasureType

public int erasureType

erasureType == code for the type of erasure code to use.

handleStore

public HandleStore handleStore

HandleStore of VerifiableBlocks to Fragment.

Constructor Detail

GenerateFragsChkptReq

public GenerateFragsChkptReq()

Constructor: Initializes instance variables to null.

GenerateFragsChkptReq

public GenerateFragsChkptReq(CacheableIdentity rootBlock,
                             int numFrags,
                             int inverseR,
                             int erasureT)

Constructor. Initializes the data in this GenerateFragsChkptReq.

Parameters:

rootBlock - = cacheable identity of root block.

numFrags - = number of fragments generated for block.

inverseR - = rate of encoding.

erasureT - = code for the type of erasure code to use.

GenerateFragsChkptReq

public GenerateFragsChkptReq(CacheableIdentity rootBlock,
                             int numFrags,
                             int inverseR,
                             int erasureT,
                             HandleStore store)

Constructor. Initializes the data in this GenerateFragsChkptReq.

Parameters:

rootBlock - cacheable identity of root block.

numFrags - number of fragments generated for block.

inverseR - rate of encoding.

erasureT - code for the type of erasure code to use.

store - sets the HandleStore belonging to the VerifiableBlocks to Fragment.

GenerateFragsChkptReq

public GenerateFragsChkptReq(InputBuffer buffer)
                      throws QSException

Constructs a GenerateFragsChkptReq from its serialized form.

Parameters:

buffer - serialized form of object.

Method Detail

getHandleStore

public HandleStore getHandleStore()

getHandleStore returns the HandleStore of VerifiableBlocks to Fragment.

Returns:

the HandleStore of VerifiableBlocks to Fragment.

setHandleStore

public void setHandleStore(HandleStore store)

setHandleStore sets the HandleStore belonging to the VerifiableBlocks to Fragment.

Parameters:

store - the HandleStore belonging to the VerifiableBlocks to Fragment.

serialize

public void serialize(OutputBuffer buffer)

Specified by ostore.util.QuickSerializable

Specified by:

serialize in interface QuickSerializable

Parameters:

buffer - the output buffer to add the object to

toString

public String toString()

Specified by java.lang.Object

Overrides:

toString in class Object