org.gridgain.grid.kernal.processors.ggfs

Class GridGgfsInputStreamImpl

java.lang.Object

java.io.InputStream

org.gridgain.grid.ggfs.GridGgfsInputStream

org.gridgain.grid.kernal.processors.ggfs.GridGgfsInputStreamAdapter

org.gridgain.grid.kernal.processors.ggfs.GridGgfsInputStreamImpl

All Implemented Interfaces:

Closeable, AutoCloseable

public class GridGgfsInputStreamImpl
extends GridGgfsInputStreamAdapter

Input stream to read data from grid cache with separate blocks.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.gridgain.grid.ggfs.GridGgfsPath	path Path to file.

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
long	bytes() Gets bytes read.
void	close()
protected org.gridgain.grid.GridFuture<byte[]>	dataBlock(GridGgfsFileInfo fileInfo, long blockIdx) Get data block for specified block index.
GridGgfsFileInfo	fileInfo() Gets file info for opened file.
long	position()
int	read()
int	read(byte[] b, int off, int len)
int	read(long pos, byte[] buf, int off, int len)
byte[][]	readChunks(long pos, int len) Reads bytes from given position.
void	readFully(long pos, byte[] buf)
void	readFully(long pos, byte[] buf, int off, int len)
void	seek(long pos)
String	toString()

Methods inherited from class org.gridgain.grid.kernal.processors.ggfs.GridGgfsInputStreamAdapter

length

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

path

protected final org.gridgain.grid.ggfs.GridGgfsPath path

Path to file.

Method Detail

bytes

public long bytes()

Gets bytes read.

Returns:

Bytes read.

fileInfo

public GridGgfsFileInfo fileInfo()

Gets file info for opened file.

Specified by:

fileInfo in class GridGgfsInputStreamAdapter

Returns:

File info.

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

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

Overrides:

read in class InputStream

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in class org.gridgain.grid.ggfs.GridGgfsInputStream

Throws:

IOException

position

public long position()
              throws IOException

Specified by:

position in class org.gridgain.grid.ggfs.GridGgfsInputStream

Throws:

IOException

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

readFully

public void readFully(long pos,
             byte[] buf)
               throws IOException

Specified by:

readFully in class org.gridgain.grid.ggfs.GridGgfsInputStream

Throws:

IOException

readFully

public void readFully(long pos,
             byte[] buf,
             int off,
             int len)
               throws IOException

Specified by:

readFully in class org.gridgain.grid.ggfs.GridGgfsInputStream

Throws:

IOException

read

public int read(long pos,
       byte[] buf,
       int off,
       int len)
         throws IOException

Specified by:

read in class org.gridgain.grid.ggfs.GridGgfsInputStream

Throws:

IOException

readChunks

public byte[][] readChunks(long pos,
                  int len)
                    throws IOException

Reads bytes from given position.

Specified by:

readChunks in class GridGgfsInputStreamAdapter

Parameters:

pos - Position to read from.

len - Number of bytes to read.

Returns:

Array of chunks with respect to chunk file representation.

Throws:

IOException - If read failed.

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

dataBlock

@Nullable
protected org.gridgain.grid.GridFuture<byte[]> dataBlock(GridGgfsFileInfo fileInfo,
                                                      long blockIdx)
                                                  throws org.gridgain.grid.GridException

Get data block for specified block index.

Parameters:

fileInfo - File info.

blockIdx - Block index.

Returns:

Requested data block or null if nothing found.

Throws:

org.gridgain.grid.GridException - If failed.

toString

public String toString()

Overrides:

toString in class Object