| com.hp.hpl.jena.db.impl.ICache
All known Subclasses: com.hp.hpl.jena.db.impl.LRUCache, com.hp.hpl.jena.db.impl.SimpleCache,
| ICache | | public interface ICache (Code) | | Interface signature for cache implementations. Instances of this are
used to cache resources and literals loaded from a database.
The type of the stored objects is left generic in case other caches
are needed but could specialize it to RDFNodes.
author:
Dave Reynolds
version:
$Revision: 1.7 $ on $Date: 2008/01/02 12:08:24 $ |
| Method Summary | |
| public Object | get(IDBID id)
| | public int | getLimit()
Return the current threshold limit for the cache size. | | public void | put(IDBID id, Object val)
| | public void | setLimit(int threshold)
Set a threshold for the cache size in terms of the count of cache entries. |
| get | | public Object get(IDBID id)(Code) | | Retreive an object from the cache
Parameters:
id - the database ID of the object to be retrieved the object or null if it is not in the cache |
| getLimit | | public int getLimit()(Code) | | Return the current threshold limit for the cache size.
|
| put | | public void put(IDBID id, Object val)(Code) | | Add an entry to the cache
Parameters:
id - the database ID to be used as an index
Parameters:
val - the literal or resources to be stored |
| setLimit | | public void setLimit(int threshold)(Code) | | Set a threshold for the cache size in terms of the count of cache entries.
For literals a storage limit rather than a count might be more useful but
counts are easier, more general and sufficient for the current use.
Parameters:
threshold - the cache size limit, use 0 for no cache, -1 forunlimited cache growth; any other number indicates the number of cache entries |
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