Package io.jmix.flowui.upload

Interface TemporaryStorage

All Known Implementing Classes:

TemporaryStorageImpl

public interface TemporaryStorage

API for uploading files to the temporary storage.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	TemporaryStorage.FileInfo
static interface	TemporaryStorage.UploadProgressListener	Listener to be notified about the progress of uploading file into the temporary storage.

Method Summary

Modifier and Type	Method	Description
TemporaryStorage.FileInfo	createFile()	Create a new empty temporary file and cache its ID for subsequent operations.
void	deleteFile(UUID fileId)	Remove a file from the temporary storage.
void	deleteFileLink(String fileName)	Remove an entry from the list of currently cached temporary file IDs, if such exists.
File	getFile(UUID fileId)	Return a previously registered temporary file by its ID.
FileRef	putFileIntoStorage(UUID fileId, String fileName)	Uploads a file from the temporary storage to the default FileStorage, which is determined by calling FileStorageLocator.getDefault().
FileRef	putFileIntoStorage(UUID fileId, String fileName, FileStorage fileStorage)	Uploads a file from the temporary storage to the FileStorage.
UUID	saveFile(byte[] data)	Store the byte array in a new temporary file.
UUID	saveFile(InputStream stream, TemporaryStorage.UploadProgressListener listener)	Store the content of stream in a new temporary file.

Method Details

saveFile

UUID saveFile(byte[] data)

Store the byte array in a new temporary file.

Parameters:

data - file contents

Returns:

temporary file ID. This ID is cached in memory and can be used for subsequent operations.

saveFile

UUID saveFile(InputStream stream,
 @Nullable
 TemporaryStorage.UploadProgressListener listener)

Store the content of stream in a new temporary file.

Parameters:

stream - stream which content is to be stored

listener - optional listener to be notified about storing progress

Returns:

temporary file ID. This ID is cached in memory and can be used for subsequent operations.

createFile

TemporaryStorage.FileInfo createFile()

Create a new empty temporary file and cache its ID for subsequent operations.

Returns:

the new temporary file ID

Throws:

FileStorageException - in case of IO problems

getFile

@Nullable
File getFile(UUID fileId)

Return a previously registered temporary file by its ID.

Parameters:

fileId - temporary file ID

Returns:

temporary file object or null if no file registered under this ID

deleteFile

void deleteFile(UUID fileId)

Remove a file from the temporary storage.
This method is automatically called from putFileIntoStorage() when the file is successfully stored on the middleware.

Parameters:

fileId - temporary file ID

Throws:

FileStorageException - in case of IO problems

deleteFileLink

void deleteFileLink(String fileName)

Remove an entry from the list of currently cached temporary file IDs, if such exists. This method is used by the framework when cleaning up the temp folder.

Parameters:

fileName - absolute path to the temporary file

putFileIntoStorage

FileRef putFileIntoStorage(UUID fileId,
 String fileName,
 FileStorage fileStorage)

Uploads a file from the temporary storage to the FileStorage.

Parameters:

fileId - temporary file ID

fileName - file name

fileStorage - file storage

putFileIntoStorage

FileRef putFileIntoStorage(UUID fileId,
 String fileName)

Uploads a file from the temporary storage to the default FileStorage, which is determined by calling FileStorageLocator.getDefault().

Parameters:

fileId - temporary file ID

fileName - file name