| java.lang.Object
 jdbm.htree.HTree
| HTree | | public class HTree (Code) | | Persistent hashtable implementation for PageManager.
Implemented as an H*Tree structure.
WARNING! If this instance is used in a transactional context, it
must* be discarded after a rollback.
author:
Alex Boisvert
version:
$Id: HTree.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $ |
| createInstance | | public static HTree createInstance(RecordManager recman) throws IOException(Code) | | Create a persistent hashtable.
Parameters:
recman - Record manager used for persistence. |
| get | | public synchronized Object get(Object key) throws IOException(Code) | | Returns the value which is associated with the given key. Returns
null if there is not association for this key.
Parameters:
key - key whose associated value is to be returned |
| getRecid | | public long getRecid()(Code) | | Get the record identifier used to load this hashtable.
|
| load | | public static HTree load(RecordManager recman, long root_recid) throws IOException(Code) | | Load a persistent hashtable
Parameters:
recman - RecordManager used to store the persistent hashtable
Parameters:
root_recid - Record id of the root directory of the HTree |
| put | | public synchronized void put(Object key, Object value) throws IOException(Code) | | Associates the specified value with the specified key.
Parameters:
key - key with which the specified value is to be assocated.
Parameters:
value - value to be associated with the specified key. |
| remove | | public synchronized void remove(Object key) throws IOException(Code) | | Remove the value which is associated with the given key. If the
key does not exist, this method simply ignores the operation.
Parameters:
key - key whose associated value is to be removed |
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