net.doo.snap.blob

Class BlobManager

net.doo.snap.blob.BlobManager

public class BlobManager

Manages binary files on local filesystem and provides access to binary files stored remotely

Constructor Summary

Constructors

Constructor and Description
BlobManager()

Method Summary

Modifier and Type	Method and Description
boolean	allBlobsAvailable()
java.util.HashSet<net.doo.snap.entity.Blob>	blobsToDownload()
long	fetch() Launches asynchronous fetch of a given net.doo.snap.entity.Blob if it is not already available in local destination folder. Might perform blocking operations, so it should not be called from the main thread.
java.util.Set<net.doo.snap.entity.Language>	getAllLanguagesWithAvailableOcrBlobs()
java.io.File	getBanksDataFile()
java.io.File	getMRZTraineddataFile()
java.io.File	getOCRBlobsDirectory()
boolean	hasActiveDownloads()
boolean	isBlobAvailable()

Constructor Detail

BlobManager

public BlobManager()

Method Detail

allBlobsAvailable

public boolean allBlobsAvailable()

Returns:

true if all blobs from collection are available locally. false if at least one blob is not available. If collection is empty returns true

isBlobAvailable

public boolean isBlobAvailable()

Returns:

true if net.doo.snap.entity.Blob is available on local filesystem. false otherwise.

getAllLanguagesWithAvailableOcrBlobs

public java.util.Set<net.doo.snap.entity.Language> getAllLanguagesWithAvailableOcrBlobs()

Returns:

set of all languages for which OCR binaries are present on local filesystem

See Also:

BlobManager.isBlobAvailable

getOCRBlobsDirectory

public java.io.File getOCRBlobsDirectory()

Returns:

the internal OCR blobs directory.

Throws:

- if directory is unavailable

getBanksDataFile

public java.io.File getBanksDataFile()

Returns:

the internal banks data file.

Throws:

- if file is unavailable

getMRZTraineddataFile

public java.io.File getMRZTraineddataFile()

Returns:

MRZ OCR traineddata file.

Throws:

- if file is unavailable

fetch

public long fetch()

Launches asynchronous fetch of a given net.doo.snap.entity.Blob if it is not already available in local destination folder. Might perform blocking operations, so it should not be called from the main thread.

Returns:

id of fetch or -1 if blob is available locally

See Also:

BlobManager.isBlobAvailable

hasActiveDownloads

public boolean hasActiveDownloads()

Returns:

true if some blobs are still in fetch process (or paused). false if all requested downloads completed. This method performs blocking operation, so it should not be called from the main thread.

blobsToDownload

public java.util.HashSet<net.doo.snap.entity.Blob> blobsToDownload()

Returns:

set of net.doo.snap.entity.Blob that should be downloaded for given languages to perform OCR