FilterManager (Lucene 3.6.2 API)

java.lang.Object
- org.apache.lucene.search.FilterManager

```
@Deprecated
public class FilterManager
extends Object
```
Deprecated.
used by remote package which is deprecated as well. You should use CachingWrapperFilter if you wish to cache Filters.

Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possible to cache Filters even when using RMI, as it keeps the cache on the searcher side of the RMI connection. Also could be used as a persistent storage for any filter as long as the filter provides a proper hashCode(), as that is used as the key in the cache. The cache is periodically cleaned up from a separate thread to ensure the cache doesn't exceed the maximum size.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected class`	`FilterManager.FilterCleaner`	Deprecated. Keeps the cache from getting too big.
`protected class`	`FilterManager.FilterItem`	Deprecated. Holds the filter and the last time the filter was used, to make LRU-based cache cleaning possible.

Field Summary

Fields
Modifier and Type	Field	Description
`protected Map<Integer,FilterManager.FilterItem>`	`cache`	Deprecated. The cache itself
`protected int`	`cacheCleanSize`	Deprecated. Maximum allowed cache size
`protected long`	`cleanSleepTime`	Deprecated. Cache cleaning frequency
`protected static int`	`DEFAULT_CACHE_CLEAN_SIZE`	Deprecated. The default maximum number of Filters in the cache
`protected static long`	`DEFAULT_CACHE_SLEEP_TIME`	Deprecated. The default frequency of cache cleanup
`protected FilterManager.FilterCleaner`	`filterCleaner`	Deprecated. Cache cleaner that runs in a separate thread
`protected static FilterManager`	`manager`	Deprecated.

Constructor Summary

Constructors
Modifier Constructor Description

protected FilterManager()
Deprecated.

Sets up the FilterManager singleton.

Constructors
Modifier	Constructor	Description
`protected`	`FilterManager()`	Deprecated. Sets up the FilterManager singleton.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`Filter`	`getFilter(Filter filter)`	Deprecated. Returns the cached version of the filter.
`static FilterManager`	`getInstance()`	Deprecated.
`void`	`setCacheSize(int cacheCleanSize)`	Deprecated. Sets the max size that cache should reach before it is cleaned up
`void`	`setCleanThreadSleepTime(long cleanSleepTime)`	Deprecated. Sets the cache cleaning frequency in milliseconds.

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

- Field Detail
  - manager
```
protected static FilterManager manager
```
    Deprecated.
  - DEFAULT_CACHE_CLEAN_SIZE
```
protected static final int DEFAULT_CACHE_CLEAN_SIZE
```
    Deprecated.
    
    The default maximum number of Filters in the cache
    
    See Also:
    
    Constant Field Values
  - DEFAULT_CACHE_SLEEP_TIME
```
protected static final long DEFAULT_CACHE_SLEEP_TIME
```
    Deprecated.
    
    The default frequency of cache cleanup
    
    See Also:
    
    Constant Field Values
  - cache
```
protected Map<Integer,FilterManager.FilterItem> cache
```
    Deprecated.
    
    The cache itself
  - cacheCleanSize
```
protected int cacheCleanSize
```
    Deprecated.
    
    Maximum allowed cache size
  - cleanSleepTime
```
protected long cleanSleepTime
```
    Deprecated.
    
    Cache cleaning frequency
  - filterCleaner
```
protected FilterManager.FilterCleaner filterCleaner
```
    Deprecated.
    
    Cache cleaner that runs in a separate thread
- Constructor Detail
  - FilterManager
```
protected FilterManager()
```
    Deprecated.
    
    Sets up the FilterManager singleton.
- Method Detail
  - getInstance
```
public static FilterManager getInstance()
```
    Deprecated.
  - setCacheSize
```
public void setCacheSize(int cacheCleanSize)
```
    Deprecated.
    
    Sets the max size that cache should reach before it is cleaned up
    
    Parameters:
    
    cacheCleanSize - maximum allowed cache size
  - setCleanThreadSleepTime
```
public void setCleanThreadSleepTime(long cleanSleepTime)
```
    Deprecated.
    
    Sets the cache cleaning frequency in milliseconds.
    
    Parameters:
    
    cleanSleepTime - cleaning frequency in milliseconds
  - getFilter
```
public Filter getFilter(Filter filter)
```
    Deprecated.
    
    Returns the cached version of the filter. Allows the caller to pass up a small filter but this will keep a persistent version around and allow the caching filter to do its job.
    
    Parameters:
    
    filter - The input filter
    
    Returns:
    
    The cached version of the filter

Class FilterManager

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

manager

DEFAULT_CACHE_CLEAN_SIZE

DEFAULT_CACHE_SLEEP_TIME

cache

cacheCleanSize

cleanSleepTime

filterCleaner

Constructor Detail

FilterManager

Method Detail

getInstance

setCacheSize

setCleanThreadSleepTime

getFilter