org.apache.directory.server.xdbm.impl.avl
Class AvlMasterTable<E>

java.lang.Object
  org.apache.directory.server.xdbm.AbstractTable<K,V>
      org.apache.directory.server.xdbm.impl.avl.AvlTable<Long,E>
          org.apache.directory.server.xdbm.impl.avl.AvlMasterTable<E>

All Implemented Interfaces:

MasterTable<Long,E>, Table<Long,E>

public class AvlMasterTable<E>
extends AvlTable<Long,E>
implements MasterTable<Long,E>

TODO Make it so the master table does not extend table interface - not needed with this single use of delete so we should just use containment.

Author:

Apache Directory Project

Field Summary

Fields inherited from class org.apache.directory.server.xdbm.AbstractTable

count, keyComparator, name, schemaManager, valueComparator

Fields inherited from interface org.apache.directory.server.xdbm.MasterTable

DBF, SEQPROP_KEY

Constructor Summary

AvlMasterTable(String name, Comparator<Long> keyComparator, Comparator<E> valComparator, boolean dupsEnabled)

Method Summary

Long	getNextId(E entry) Gets the next value from the sequence of this MasterTable.
void	resetCounter() Resets the root ID to 0, this method should be called after deleting the context entry of the partition

Methods inherited from class org.apache.directory.server.xdbm.impl.avl.AvlTable

close, count, cursor, cursor, get, greaterThanCount, has, has, hasGreaterOrEqual, hasGreaterOrEqual, hasLessOrEqual, hasLessOrEqual, isDupsEnabled, lessThanCount, put, remove, remove, valueCursor

Methods inherited from class org.apache.directory.server.xdbm.AbstractTable

count, getKeyComparator, getName, getValueComparator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.directory.server.xdbm.Table

close, count, count, cursor, cursor, get, getKeyComparator, getName, getValueComparator, greaterThanCount, has, has, hasGreaterOrEqual, hasGreaterOrEqual, hasLessOrEqual, hasLessOrEqual, isDupsEnabled, lessThanCount, put, remove, remove, valueCursor

Constructor Detail

AvlMasterTable

public AvlMasterTable(String name,
                      Comparator<Long> keyComparator,
                      Comparator<E> valComparator,
                      boolean dupsEnabled)

Method Detail

getNextId

public Long getNextId(E entry)
               throws Exception

Gets the next value from the sequence of this MasterTable. This has the side-effect of incrementing the sequence values permanently.

Specified by:

getNextId in interface MasterTable<Long,E>

Parameters:

entry - the entry in case the id is derived from the entry.

Returns:

the current value of this MasterTable's sequence incremented by one

Throws:

Exception - on failure to update the id sequence

resetCounter

public void resetCounter()
                  throws Exception

Resets the root ID to 0, this method should be called after deleting the context entry of the partition

Specified by:

resetCounter in interface MasterTable<Long,E>

Throws:

Exception - in case of any failure while resetting the root id value