org.neodatis.odb.impl.core.btree
Class LazyODBBTreePersister
java.lang.Object
org.neodatis.odb.impl.core.btree.LazyODBBTreePersister
- All Implemented Interfaces:
- IBTreePersister, ICommitListener
public class LazyODBBTreePersister
- extends java.lang.Object
- implements IBTreePersister, ICommitListener
Class that persists the BTree and its node into the NeoDatis ODB Database.
- Author:
- osmadja
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LOG_ID
public static final java.lang.String LOG_ID
- See Also:
- Constant Field Values
nbSaveNodes
public static int nbSaveNodes
nbSaveNodesInCache
public static int nbSaveNodesInCache
nbSaveTree
public static int nbSaveTree
nbLoadNodes
public static int nbLoadNodes
nbLoadTree
public static int nbLoadTree
nbLoadNodesFromCache
public static int nbLoadNodesFromCache
LazyODBBTreePersister
public LazyODBBTreePersister(ODB odb)
LazyODBBTreePersister
public LazyODBBTreePersister(IStorageEngine engine)
loadNodeById
public IBTreeNode loadNodeById(java.lang.Object id)
- Loads a node from its id. Tries to get if from memory, if not present
then loads it from odb storage
- Specified by:
loadNodeById
in interface IBTreePersister
- Parameters:
id
- The id of the nod
- Returns:
- The node with the specific id
saveNode
public java.lang.Object saveNode(IBTreeNode node)
- saves the bree node Only puts the current node in an 'modified Node' map
to be saved on commit
- Specified by:
saveNode
in interface IBTreePersister
close
public void close()
throws java.lang.Exception
- Specified by:
close
in interface IBTreePersister
- Throws:
java.lang.Exception
loadBTree
public IBTree loadBTree(java.lang.Object id)
- Specified by:
loadBTree
in interface IBTreePersister
saveBTree
public OID saveBTree(IBTree treeToSave)
- Specified by:
saveBTree
in interface IBTreePersister
getNextNodeId
public OID getNextNodeId()
throws java.io.IOException
- Throws:
java.io.IOException
persist
public void persist()
afterCommit
public void afterCommit()
- Specified by:
afterCommit
in interface ICommitListener
beforeCommit
public void beforeCommit()
- Specified by:
beforeCommit
in interface ICommitListener
deleteNode
public java.lang.Object deleteNode(IBTreeNode o)
- Specified by:
deleteNode
in interface IBTreePersister
setBTree
public void setBTree(IBTree tree)
- Specified by:
setBTree
in interface IBTreePersister
resetCounters
public static void resetCounters()
counters
public static java.lang.StringBuffer counters()
clear
public void clear()
- Specified by:
clear
in interface IBTreePersister
clearModified
public void clearModified()
flush
public void flush()
- Specified by:
flush
in interface IBTreePersister
addModifiedOid
protected void addModifiedOid(OID oid)