MmappedRegions.Region (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.io.util.MmappedRegions.Region

All Implemented Interfaces:: Rebufferer.BufferHolder

Enclosing class:: MmappedRegions

public static final class MmappedRegions.Region
extends java.lang.Object
implements Rebufferer.BufferHolder

Field Summary

Fields
Modifier and Type Field Description

java.nio.ByteBuffer buffer

long offset

Constructor Summary

Constructors
Constructor Description

Region(long offset, java.nio.ByteBuffer buffer)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.nio.ByteBuffer`	`buffer()`	Returns a useable buffer (i.e.
`long`	`end()`
`long`	`offset()`	Position in the file of the start of the buffer.
`void`	`release()`	To be called when this buffer is no longer in use.

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

- Field Detail
  - offset
```
public final long offset
```
  - buffer
```
public final java.nio.ByteBuffer buffer
```
- Constructor Detail
  - Region
```
public Region(long offset,
              java.nio.ByteBuffer buffer)
```
- Method Detail
  - buffer
```
public java.nio.ByteBuffer buffer()
```
    Description copied from interface: Rebufferer.BufferHolder
    
    Returns a useable buffer (i.e. one whose position and limit can be freely modified). Its limit will be set to the size of the available data in the buffer. The buffer must be treated as read-only.
    
    Specified by:
    
    buffer in interface Rebufferer.BufferHolder
  - offset
```
public long offset()
```
    Description copied from interface: Rebufferer.BufferHolder
    
    Position in the file of the start of the buffer.
    
    Specified by:
    
    offset in interface Rebufferer.BufferHolder
  - end
```
public long end()
```
  - release
```
public void release()
```
    Description copied from interface: Rebufferer.BufferHolder
    
    To be called when this buffer is no longer in use. Must be called for all BufferHolders, or ChunkCache will not be able to free blocks.
    
    Specified by:
    
    release in interface Rebufferer.BufferHolder