dk.netarkivet.common.distribute.arcrepository
Interface ViewerArcRepositoryClient

All Known Subinterfaces:

ArcRepositoryClient

All Known Implementing Classes:

JMSArcRepositoryClient, LocalArcRepositoryClient

public interface ViewerArcRepositoryClient

Implements the Facade pattern to shield off the methods in JMSArcRepositoryClient not to be used by the bit preservation system.

Method Summary

BatchStatus	batch(FileBatchJob job, java.lang.String replicaId, java.lang.String... args) Runs a batch batch job on each file in the ArcRepository.
void	close() Call on shutdown to release external resources.
BitarchiveRecord	get(java.lang.String arcfile, long index) Gets a single ARC record out of the ArcRepository.
void	getFile(java.lang.String arcfilename, Replica replica, java.io.File toFile) Retrieves a file from an ArcRepository and places it in a local file.

Method Detail

close

void close()

Call on shutdown to release external resources.

get

BitarchiveRecord get(java.lang.String arcfile,
                     long index)
                     throws ArgumentNotValid

Gets a single ARC record out of the ArcRepository.

Parameters:

arcfile - The name of a file containing the desired record.

index - The offset of the desired record in the file

Returns:

a BitarchiveRecord-object, or null if request times out or object is not found.

Throws:

ArgumentNotValid - If the get operation failed.

getFile

void getFile(java.lang.String arcfilename,
             Replica replica,
             java.io.File toFile)

Retrieves a file from an ArcRepository and places it in a local file.

Parameters:

arcfilename - Name of the arcfile to retrieve.

replica - The bitarchive to retrieve the data from.

toFile - Filename of a place where the file fetched can be put.

Throws:

IOFailure - if there are problems getting a reply or the file could not be found.

batch

BatchStatus batch(FileBatchJob job,
                  java.lang.String replicaId,
                  java.lang.String... args)

Runs a batch batch job on each file in the ArcRepository.

Parameters:

job - An object that implements the FileBatchJob interface. The initialize() method will be called before processing and the finish() method will be called afterwards. The process() method will be called with each File entry. An optional function postProcess() allows handling the combined results of the batchjob, e.g. summing the results, sorting, etc.

replicaId - The archive to execute the job on.

args - The arguments for the batchjob.

Returns:

The status of the batch job after it ended.