org.apache.paimon.fs.local

Class LocalFileIO.LocalSeekableInputStream

java.lang.Object

java.io.InputStream

org.apache.paimon.fs.SeekableInputStream

org.apache.paimon.fs.local.LocalFileIO.LocalSeekableInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, VectoredReadable

Enclosing class:

LocalFileIO

public static class LocalFileIO.LocalSeekableInputStream
extends SeekableInputStream
implements VectoredReadable

Local SeekableInputStream.

Constructor Summary

Constructors

Constructor and Description
LocalSeekableInputStream(File file)

Method Summary

Modifier and Type	Method and Description
void	close() Closes this input stream and releases any system resources associated with the stream.
long	getPos() Gets the current position in the input stream.
int	pread(long position, byte[] b, int off, int len) Read up to the specified number of bytes, from a given position within a file, and return the number of bytes read.
int	read()
int	read(byte[] b, int off, int len) Reads up to len bytes of data from the input stream into an array of bytes.
void	seek(long desired) Seek to the given offset from the start of the file.

Methods inherited from class java.io.InputStream

available, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.paimon.fs.VectoredReadable

batchSizeForVectorReads, minSeekForVectorReads, parallelismForVectorReads, preadFully, readVectored

Constructor Detail

LocalSeekableInputStream

public LocalSeekableInputStream(File file)
                         throws FileNotFoundException

Throws:

FileNotFoundException

Method Detail

seek

public void seek(long desired)
          throws IOException

Description copied from class: SeekableInputStream

Seek to the given offset from the start of the file. The next read() will be from that location. Can't seek past the end of the stream.

Specified by:

seek in class SeekableInputStream

Parameters:

desired - the desired offset

Throws:

IOException - Thrown if an error occurred while seeking inside the input stream.

getPos

public long getPos()
            throws IOException

Description copied from class: SeekableInputStream

Gets the current position in the input stream.

Specified by:

getPos in class SeekableInputStream

Returns:

current position in the input stream

Throws:

IOException - Thrown if an I/O error occurred in the underlying stream implementation while accessing the stream's position.

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Description copied from class: SeekableInputStream

Reads up to len bytes of data from the input stream into an array of bytes. An attempt is made to read as many as len bytes, but a smaller number may be read. The number of bytes actually read is returned as an integer.

Specified by:

read in class SeekableInputStream

Throws:

IOException

close

public void close()
           throws IOException

Description copied from class: SeekableInputStream

Closes this input stream and releases any system resources associated with the stream.

The close method of InputStream does nothing.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class SeekableInputStream

Throws:

IOException - if an I/O error occurs.

pread

public int pread(long position,
                 byte[] b,
                 int off,
                 int len)
          throws IOException

Description copied from interface: VectoredReadable

Read up to the specified number of bytes, from a given position within a file, and return the number of bytes read. This does not change the current offset of a file, and is thread-safe.

Specified by:

pread in interface VectoredReadable

Throws:

IOException