IMappedPage (bigqueue 1.0.4 API)

All Known Implementing Classes:

MappedPageImpl
```
public interface IMappedPage
```
Memory mapped page file ADT

Author:

bulldog

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`flush()`	Persist any changes to disk
`ByteBuffer`	`getLocal(int position)`	Get a thread local copy of the mapped page buffer
`byte[]`	`getLocal(int position, int length)`	Get data from a thread local copy of the mapped page buffer
`String`	`getPageFile()`	The back page file name of the mapped page
`long`	`getPageIndex()`	The index of the mapped page
`boolean`	`isClosed()`	Check if this mapped page has been closed or not
`boolean`	`isNew()`	Is the mapped page new or was it read from disk
`void`	`setDirty(boolean dirty)`	Set if the mapped page has been changed or not

- Method Detail
  - getLocal
```
ByteBuffer getLocal(int position)
```
    Get a thread local copy of the mapped page buffer
    
    Parameters:
    
    position - start position(relative to the start position of source mapped page buffer) of the thread local buffer
    
    Returns:
    
    a byte buffer with specific position as start position.
  - getLocal
```
byte[] getLocal(int position,
                int length)
```
    Get data from a thread local copy of the mapped page buffer
    
    Parameters:
    
    position - start position(relative to the start position of source mapped page buffer) of the thread local buffer
    
    length - the length to fetch
    
    Returns:
    
    byte data
  - isClosed
```
boolean isClosed()
```
    Check if this mapped page has been closed or not
    
    Returns:
    
    returns true if closed
  - isNew
```
boolean isNew()
```
    Is the mapped page new or was it read from disk
    
    Returns:
    
    true if no file on disk existed
  - setDirty
```
void setDirty(boolean dirty)
```
    Set if the mapped page has been changed or not
    
    Parameters:
    
    dirty - dirty flag to set
  - getPageFile
```
String getPageFile()
```
    The back page file name of the mapped page
    
    Returns:
    
    name of page file
  - getPageIndex
```
long getPageIndex()
```
    The index of the mapped page
    
    Returns:
    
    the index
  - flush
```
void flush()
```
    Persist any changes to disk