fiftyone.mobile.detection.entities.stream
Class TriePool

java.lang.Object
  fiftyone.mobile.detection.entities.stream.TriePool

All Implemented Interfaces:

Disposable

public class TriePool
extends Object
implements Disposable

As multiple threads need to read from the Source concurrently this class provides a mechanism for readers to be recycled across threads and requests.

Used by the BaseList to provide multiple readers for the list.

The DetectorDataSet must be disposed of to ensure the readers in the pool are closed.

Field Summary

private Queue<TrieReader>	readers
private TrieSource	source

Constructor Summary

TriePool(TrieSource source)
Constructs a new pool of readers for the source provided.

Method Summary

void	dispose()
TrieReader	getReader() Returns a reader to the temp file for exclusive use.
void	release(TrieReader reader) Returns the reader to the pool to be used by another process later.

Methods inherited from class java.lang.Object

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

Field Detail

readers

private final Queue<TrieReader> readers

source

private final TrieSource source

Constructor Detail

TriePool

public TriePool(TrieSource source)

Constructs a new pool of readers for the source provided.

Parameters:

source - The data source for the list

Method Detail

getReader

public TrieReader getReader()
                     throws IOException

Returns a reader to the temp file for exclusive use. Release method must be called to return the reader to the pool when finished.

Returns:

Reader open and ready to read from the temp file

Throws:

IOException

release

public void release(TrieReader reader)

Returns the reader to the pool to be used by another process later.

Parameters:

reader - Reader open and ready to read from the temp file

dispose

public void dispose()

Specified by:

dispose in interface Disposable