| java.lang.Object
 com.hp.hpl.jena.db.impl.SimpleCache
| SimpleCache | | public class SimpleCache implements ICache(Code) | | Trivial implementation of the generic cache interface used to cache
literals and resources. This implementation simple flushes the cache
when the threshold limit is exceeded.
author:
Dave Reynolds
version:
$Revision: 1.8 $ on $Date: 2008/01/02 12:08:25 $ |
| Constructor Summary | |
| public | SimpleCache(int threshold)
Create an empty cache with the given threshold limit. |
| 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. |
| cache | | protected Map cache(Code) | | The cache itself
|
| count | | protected int count(Code) | | The current number of entries (probably redundant, just use cache.size)
|
| threshold | | protected int threshold(Code) | | The current size limit
|
| SimpleCache | | public SimpleCache(int threshold)(Code) | | Create an empty cache with the given threshold limit.
Parameters:
threshold - the cache size limit, use 0 for no cache, -1 forunlimited cache growth; any other number indicates the number 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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