BufferedFileIO (Ignite 2.17.0)

java.lang.Object
- org.apache.ignite.internal.processors.cache.persistence.file.AbstractFileIO
- - org.apache.ignite.internal.processors.cache.persistence.file.FileIODecorator
  - - org.apache.ignite.internal.processors.cache.persistence.snapshot.dump.BufferedFileIO

All Implemented Interfaces:

AutoCloseable, FileIO

Direct Known Subclasses:

WriteOnlyZipFileIO
```
public class BufferedFileIO
extends FileIODecorator
```
The class implements a FileIO that allows to write bytes to the underlying FileIO without necessarily causing a call to the underlying system for each byte written. This IO writes to underlying storage whole buffer thus reduces number of system calls. It doesn't support reading or random access. It is not designed for writing concurrently from several threads.

Field Summary
- Fields inherited from class org.apache.ignite.internal.processors.cache.persistence.file.FileIODecorator
  delegate

Constructor Summary

Constructors
Constructor Description

BufferedFileIO(FileIO fileIO)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Closes current file.
`protected void`	`writeByte(byte b)`	Writes one byte.
`protected void`	`writeBytes(byte[] srcBuf, int off, int len)`	Writes byte array.
`int`	`writeFully(ByteBuffer srcBuf)`	Writes a sequence of bytes to this file from the `sourceBuffer`.

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.file.FileIODecorator
clear, force, force, getFileSystemBlockSize, getSparseSize, map, position, position, punchHole, read, read, read, size, transferFrom, transferTo, write, write, write

Methods inherited from class org.apache.ignite.internal.processors.cache.persistence.file.AbstractFileIO
readFully, readFully, readFully, writeFully, writeFully

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - BufferedFileIO
```
public BufferedFileIO(FileIO fileIO)
```
- Method Detail
  - 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
    
    Overrides:
    
    writeFully in class AbstractFileIO
    
    Parameters:
    
    srcBuf - Source buffer.
    
    Returns:
    
    Number of written bytes.
    
    Throws:
    
    IOException - If some I/O error occurs.
  - writeBytes
```
protected void writeBytes(byte[] srcBuf,
                          int off,
                          int len)
                   throws IOException
```
    Writes byte array.
    
    Throws:
    
    IOException - If some I/O error occurs.
  - writeByte
```
protected void writeByte(byte b)
                  throws IOException
```
    Writes one byte.
    
    Throws:
    
    IOException - If some I/O error occurs.
  - close
```
public void close()
           throws IOException
```
    Closes current file.
    
    Specified by:
    
    close in interface AutoCloseable
    
    Specified by:
    
    close in interface FileIO
    
    Overrides:
    
    close in class FileIODecorator
    
    Throws:
    
    IOException - If some I/O error occurs.