MemoryCache

java.lang.Object
- de.umass.lastfm.cache.Cache
- - de.umass.lastfm.cache.MemoryCache

```
public class MemoryCache
extends Cache
```
This class is just for testing. You probably don't want to use it in production.

Author:

Janni Kovacs

Constructor Summary

Constructors
Constructor and Description

MemoryCache()

Constructors
Constructor and Description
`MemoryCache()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clear()` Clears the cache by effectively removing all cached data.
`boolean`	`contains(java.lang.String cacheEntryName)` Checks if the cache contains an entry with the given name.
`boolean`	`isExpired(java.lang.String cacheEntryName)` Checks if the specified entry is expired.
`java.io.InputStream`	`load(java.lang.String cacheEntryName)` Loads the specified entry from the cache and returns an InputStream to be read from.
`void`	`remove(java.lang.String cacheEntryName)` Removes the specified entry from the cache if available.
`void`	`store(java.lang.String cacheEntryName, java.io.InputStream inputStream, long expirationDate)` Stores a request in the cache.

Methods inherited from class de.umass.lastfm.cache.Cache
createCacheEntryName, getExpirationPolicy, setExpirationPolicy, setHashCacheEntryNames

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

- Constructor Detail
  - MemoryCache
```
public MemoryCache()
```
- Method Detail
  - contains
```
public boolean contains(java.lang.String cacheEntryName)
```
    Description copied from class: Cache
    
    Checks if the cache contains an entry with the given name.
    
    Specified by:
    
    contains in class Cache
    
    Parameters:
    
    cacheEntryName - An entry name
    
    Returns:
    
    true if the cache contains this entry
  - load
```
public java.io.InputStream load(java.lang.String cacheEntryName)
```
    Description copied from class: Cache
    
    Loads the specified entry from the cache and returns an InputStream to be read from. Returns null if the cache does not contain the specified cacheEntryName.
    
    Specified by:
    
    load in class Cache
    
    Parameters:
    
    cacheEntryName - An entry name
    
    Returns:
    
    an InputStream or null
  - remove
```
public void remove(java.lang.String cacheEntryName)
```
    Description copied from class: Cache
    
    Removes the specified entry from the cache if available. Does nothing if no such entry is available.
    
    Specified by:
    
    remove in class Cache
    
    Parameters:
    
    cacheEntryName - An entry name
  - store
```
public void store(java.lang.String cacheEntryName,
                  java.io.InputStream inputStream,
                  long expirationDate)
```
    Description copied from class: Cache
    
    Stores a request in the cache.
    
    Specified by:
    
    store in class Cache
    
    Parameters:
    
    cacheEntryName - The entry name to be stored to
    
    inputStream - An InputStream containing the data to be cached
    
    expirationDate - The date of expiration represented in milliseconds since 1.1.1970
  - isExpired
```
public boolean isExpired(java.lang.String cacheEntryName)
```
    Description copied from class: Cache
    
    Checks if the specified entry is expired.
    
    Specified by:
    
    isExpired in class Cache
    
    Parameters:
    
    cacheEntryName - An entry name
    
    Returns:
    
    true if the entry is expired
  - clear
```
public void clear()
```
    Description copied from class: Cache
    
    Clears the cache by effectively removing all cached data.
    
    Specified by:
    
    clear in class Cache

Class MemoryCache

Constructor Summary

Method Summary

Methods inherited from class de.umass.lastfm.cache.Cache

Methods inherited from class java.lang.Object

Constructor Detail

MemoryCache

Method Detail

contains

load

remove

store

isExpired

clear