ucar.nc2.util.cache
Class FileCacheRaf.Raf

java.lang.Object
  ucar.nc2.util.cache.FileCacheRaf.Raf

All Implemented Interfaces:

FileCacheable

Enclosing class:

FileCacheRaf

public class FileCacheRaf.Raf
extends Object
implements FileCacheable

Method Summary

void	close() Close the FileCacheable, release all resources.
String	getLocation() The location of the FileCacheable, used only for debug and log messages.
RandomAccessFile	getRaf()
void	setFileCache(FileCache fileCache) If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():
boolean	sync() Sync() is called when the FileCacheable is found in the cache, before returning the object to the application.

Methods inherited from class java.lang.Object

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

Method Detail

getLocation

public String getLocation()

Description copied from interface: FileCacheable

The location of the FileCacheable, used only for debug and log messages.

Specified by:

getLocation in interface FileCacheable

Returns:

location

getRaf

public RandomAccessFile getRaf()

close

public void close()
           throws IOException

Description copied from interface: FileCacheable

Close the FileCacheable, release all resources. Also must honor contract with setFileCache().

Specified by:

close in interface FileCacheable

Throws:

IOException

sync

public boolean sync()
             throws IOException

Description copied from interface: FileCacheable

Sync() is called when the FileCacheable is found in the cache, before returning the object to the application. FileCacheable has an opportunity to freshen itself. FileCacheable mag ignore this call.

Specified by:

sync in interface FileCacheable

Returns:

true if FileCacheable was changed

Throws:

IOException - on i/o error.

setFileCache

public void setFileCache(FileCache fileCache)

Description copied from interface: FileCacheable

If the FileCache is set, the FileCacheable object must store it and call FileCache.release() on FileCacheable.close():

  public synchronized void close() throws java.io.IOException {
    if (isClosed) return;
    if (cache != null) {
      cache.release(this);
    } else {
      reallyClose();
    }
    isClosed = true;
   

Specified by:

setFileCache in interface FileCacheable

Parameters:

fileCache - must store this, use it on close as above.