Package dk.netarkivet.archive.bitarchive.distribute

Class GetFileMessage

java.lang.Object

dk.netarkivet.common.distribute.NetarkivetMessage

dk.netarkivet.archive.distribute.ArchiveMessage

dk.netarkivet.archive.bitarchive.distribute.GetFileMessage

All Implemented Interfaces:

Serializable

public class GetFileMessage
extends ArchiveMessage

Message requesting a file from a bitarchive. Messages is forwarded through arcrepository, but reponds directly to sender.

See Also:

Serialized Form

Field Summary

Fields inherited from class dk.netarkivet.common.distribute.NetarkivetMessage

replyOfId

Constructor Summary

Constructors

Constructor	Description
GetFileMessage(ChannelID to, ChannelID replyTo, String arcfileName, String replicaId)	Constructor for get file message.

Method Summary

Modifier and Type	Method	Description
void	accept(ArchiveMessageVisitor v)	Should be implemented as a part of the visitor pattern.
void	clearBuffer()	Clear content buffer.
String	getArcfileName()	Get name of the file to retrieve.
void	getData(File toFile)	Writes the the content of the retrieved file into a local file.
String	getReplicaId()	Retrieve the replica id.
void	setFile(File data)	Set the file this message should return.
String	toString()	Retrieval of a string representation of this instance.

Methods inherited from class dk.netarkivet.common.distribute.NetarkivetMessage

getErrMsg, getID, getReplyOfId, getReplyTo, getTo, hasBeenSent, isOk, setNotOk, setNotOk

Methods inherited from class java.lang.Object

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

Constructor Detail

GetFileMessage

public GetFileMessage(ChannelID to,
                      ChannelID replyTo,
                      String arcfileName,
                      String replicaId)

Constructor for get file message.

Parameters:

to - Recipient

replyTo - Original sender

arcfileName - The file to retrieve

replicaId - The bitarchive replica id to retrieve it from.

Method Detail

setFile

public void setFile(File data)

Set the file this message should return. Note: This will make a remote file handle fopr the file.

Parameters:

data - Content of the file to retrieve

getData

public void getData(File toFile)
             throws ArgumentNotValid,
                    IOFailure

Writes the the content of the retrieved file into a local file. Note: This is transferred through a remote file handle, and then the handle is invalidated. This method may only be called once.

Parameters:

toFile - where to write the content

Throws:

IOFailure - on error reading the remote file or writing the local file

ArgumentNotValid - If the file is null.

getReplicaId

public String getReplicaId()

Retrieve the replica id.

Returns:

replica id

getArcfileName

public String getArcfileName()

Get name of the file to retrieve.

Returns:

file name

clearBuffer

public void clearBuffer()

Clear content buffer.

accept

public void accept(ArchiveMessageVisitor v)

Should be implemented as a part of the visitor pattern. fx.: public void accept(ArchiveMessageVisitor v) { v.visit(this); }

Specified by:

accept in class ArchiveMessage

Parameters:

v - A message visitor

See Also:

ArchiveMessageVisitor

toString

public String toString()

Retrieval of a string representation of this instance.

Overrides:

toString in class NetarkivetMessage

Returns:

The string representing this instance.

See Also:

NetarkivetMessage.toString()