Package io.jmix.ui.download

Class ByteArrayDataProvider

java.lang.Object

io.jmix.ui.download.ByteArrayDataProvider

All Implemented Interfaces:

DownloadDataProvider

public class ByteArrayDataProvider
extends Object
implements DownloadDataProvider

Provides data for Downloader from a byte array.

Constructor Summary

Constructors

Constructor	Description
ByteArrayDataProvider(byte[] data, int saveExportedByteArrayDataThresholdBytes, String tempDir)	Constructor.

Method Summary

Modifier and Type	Method	Description
InputStream	provide()
protected InputStream	readFromTempStorage(File file)
protected File	saveToTempStorage(byte[] data, String tempDir)

Methods inherited from class java.lang.Object

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

Constructor Details

ByteArrayDataProvider

public ByteArrayDataProvider(byte[] data,
 int saveExportedByteArrayDataThresholdBytes,
 String tempDir)

Constructor.

Parameters:

data - byte array

saveExportedByteArrayDataThresholdBytes - threshold in bytes on which downloaded byte array will be saved to a temporary file to prevent HTTP session memory leaks. Use UiProperties.getSaveExportedByteArrayDataThresholdBytes().

tempDir - where to store the temporary file if saveExportedByteArrayDataThresholdBytes is exceeded. Use CoreProperties.getTempDir().

Method Details

saveToTempStorage

protected File saveToTempStorage(byte[] data,
 String tempDir)

readFromTempStorage

@Nullable
protected InputStream readFromTempStorage(File file)

provide

public InputStream provide()

Specified by:

provide in interface DownloadDataProvider