org.apache.ignite.internal.processors.cache.persistence.file

Class AbstractFileIO

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.file.AbstractFileIO

All Implemented Interfaces:

AutoCloseable, FileIO

Direct Known Subclasses:

AsyncFileIO, FileIODecorator, RandomAccessFileIO, UnzipFileIO

public abstract class AbstractFileIO
extends Object
implements FileIO

Constructor Summary

Constructors

Constructor and Description
AbstractFileIO()

Method Summary

Modifier and Type	Method and Description
int	readFully(byte[] buf, int off, int len) Reads a up to length bytes from this file into the buffer.
int	readFully(ByteBuffer destBuf) Reads a sequence of bytes from this file into the destinationBuffer.
int	readFully(ByteBuffer destBuf, long position) Reads a sequence of bytes from this file into the destinationBuffer starting from specified file position.
int	writeFully(byte[] buf, int off, int len) Writes length bytes from the buffer starting at offset off to this file.
int	writeFully(ByteBuffer srcBuf) Writes a sequence of bytes to this file from the sourceBuffer.
int	writeFully(ByteBuffer srcBuf, long position) Writes a sequence of bytes to this file from the sourceBuffer starting from specified file position

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.internal.processors.cache.persistence.file.FileIO

clear, close, force, force, getFileSystemBlockSize, getSparseSize, map, position, position, punchHole, read, read, read, size, transferFrom, transferTo, write, write, write

Constructor Detail

AbstractFileIO

public AbstractFileIO()

Method Detail

readFully

public int readFully(ByteBuffer destBuf)
              throws IOException

Reads a sequence of bytes from this file into the destinationBuffer.

Specified by:

readFully in interface FileIO

Parameters:

destBuf - Destination byte buffer.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.

readFully

public int readFully(ByteBuffer destBuf,
                     long position)
              throws IOException

Reads a sequence of bytes from this file into the destinationBuffer starting from specified file position.

Specified by:

readFully in interface FileIO

Parameters:

destBuf - Destination byte buffer.

position - Starting position of file.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.

readFully

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

Reads a up to length bytes from this file into the buffer.

Specified by:

readFully in interface FileIO

Parameters:

buf - Destination byte array.

off - The start offset in array b at which the data is written.

len - Number of bytes read.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.

writeFully

public int writeFully(ByteBuffer srcBuf)
               throws IOException

Writes a sequence of bytes to this file from the sourceBuffer.

Specified by:

writeFully in interface FileIO

Parameters:

srcBuf - Source buffer.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.

writeFully

public int writeFully(ByteBuffer srcBuf,
                      long position)
               throws IOException

Writes a sequence of bytes to this file from the sourceBuffer starting from specified file position

Specified by:

writeFully in interface FileIO

Parameters:

srcBuf - Source buffer.

position - Starting file position.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.

writeFully

public int writeFully(byte[] buf,
                      int off,
                      int len)
               throws IOException

Writes length bytes from the buffer starting at offset off to this file.

Specified by:

writeFully in interface FileIO

Parameters:

buf - Source byte array.

off - Start offset in the buffer.

len - Number of bytes to write.

Returns:

Number of written bytes.

Throws:

IOException - If some I/O error occurs.