FlatFileCache (biojava 6.0.0 API)

java.lang.Object
- org.biojava.nbio.core.util.FlatFileCache

```
public class FlatFileCache
extends Object
```
Provides a cache for storing multiple small files in memory. Can be used to e.g cache gzip compressed PDB files for avoiding disk IO bottlenecks. Note this is just a wrapper for the singleton cache.

Author:

Andreas Prlic.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`addToCache(String key, File fileToCache)`	The file is read and the bytes stored immediately.
`static void`	`clear()`	Removes all elements from the cache
`static InputStream`	`getInputStream(String key)`	Gets the cached file as an InputStream.
`static int`	`size()`	Returns the number of items in the cache.

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

- Method Detail
  - addToCache
```
public static void addToCache(String key,
                              File fileToCache)
```
    The file is read and the bytes stored immediately.
    Once added, fileToCache can be modified or deleted and the cached values will not change.
    
    Parameters:
    
    key -
    
    fileToCache - A readable file, of Integer.MAX bytes length or less.
  - getInputStream
```
public static InputStream getInputStream(String key)
```
    Gets the cached file as an InputStream. Clients should check for null as the item might have expired in the cache.
    
    Parameters:
    
    key -
    
    Returns:
    
    An InputStream or null.
  - size
```
public static int size()
```
    Returns the number of items in the cache. If the cache is {@}, returns -1
    
    Returns:
  - clear
```
public static void clear()
```
    Removes all elements from the cache