Class FilterManager
Filter caching singleton. It can be used to save filters locally for reuse. This class makes it possble to cache Filters even when using RMI, as it keeps the cache on the seaercher 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.
Inheritance
Namespace:
Assembly: Lucene.Net.NetCore.dll
Syntax
public class FilterManager : objectConstructors
| Name | Description |
|---|---|
| FilterManager() | Sets up the FilterManager singleton. |
Fields
| Name | Description |
|---|---|
| cache | The cache itself |
| cacheCleanSize | Maximum allowed cache size |
| cleanSleepTime | Cache cleaning frequency |
| DEFAULT_CACHE_CLEAN_SIZE | The default maximum number of Filters in the cache |
| DEFAULT_CACHE_SLEEP_TIME | The default frequency of cache clenup |
| internalFilterCleaner | Cache cleaner that runs in a separate thread |
| manager |
Properties
| Name | Description |
|---|---|
| Instance |
Methods
| Name | Description |
|---|---|
| GetFilter(Filter) | 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. |
| SetCacheSize(Int32) | Sets the max size that cache should reach before it is cleaned up |
| SetCleanThreadSleepTime(Int64) | Sets the cache cleaning frequency in milliseconds. |