com.google.cloud.dataflow.sdk.runners.worker

Class FileBasedReader.FilenameBasedStreamFactory

java.lang.Object

com.google.cloud.dataflow.sdk.runners.worker.FileBasedReader.FilenameBasedStreamFactory

All Implemented Interfaces:

FileBasedReader.DecompressingStreamFactory

Enclosing class:

FileBasedReader<T>

protected static class FileBasedReader.FilenameBasedStreamFactory
extends Object
implements FileBasedReader.DecompressingStreamFactory

Factory for creating decompressing input streams based on a filename and a TextIO.CompressionType. If the compression mode is AUTO, the filename is checked against known extensions to determine a compression type to use.

Constructor Summary

Constructors

Constructor and Description
FilenameBasedStreamFactory(String filename, TextIO.CompressionType compressionType)

Method Summary

Modifier and Type	Method and Description
InputStream	createInputStream(InputStream inputStream) Create a decompressing InputStream from an existing InputStream.
protected TextIO.CompressionType	getCompressionTypeForAuto()

Methods inherited from class java.lang.Object

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

Constructor Detail

FilenameBasedStreamFactory

public FilenameBasedStreamFactory(String filename,
                                  TextIO.CompressionType compressionType)

Method Detail

getCompressionTypeForAuto

protected TextIO.CompressionType getCompressionTypeForAuto()

createInputStream

public InputStream createInputStream(InputStream inputStream)
                              throws IOException

Description copied from interface: FileBasedReader.DecompressingStreamFactory

Create a decompressing InputStream from an existing InputStream.

Specified by:

createInputStream in interface FileBasedReader.DecompressingStreamFactory

Parameters:

inputStream - the existing stream

Returns:

a stream that decompresses the contents of the existing stream

Throws:

IOException