| /* |
| * Copyright 2009-2012 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package edu.uci.ics.hyracks.storage.am.lsm.common.api; |
| |
| import java.util.List; |
| |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.storage.am.common.api.IIndex; |
| import edu.uci.ics.hyracks.storage.am.common.api.IModificationOperationCallback; |
| import edu.uci.ics.hyracks.storage.am.common.api.ISearchOperationCallback; |
| import edu.uci.ics.hyracks.storage.am.lsm.common.impls.LSMHarness; |
| |
| /** |
| * Methods to be implemented by an LSM index, which are called from {@link LSMHarness}. |
| * The implementations of the methods below should be thread agnostic. |
| * Synchronization of LSM operations like updates/searches/flushes/merges are |
| * done by the {@link LSMHarness}. For example, a flush() implementation should only |
| * create and return the new on-disk component, ignoring the fact that |
| * concurrent searches/updates/merges may be ongoing. |
| */ |
| public interface ILSMIndex extends IIndex { |
| |
| public void deactivate(boolean flushOnExit) throws HyracksDataException; |
| |
| public ILSMIndexAccessor createAccessor(IModificationOperationCallback modificationCallback, |
| ISearchOperationCallback searchCallback); |
| |
| public boolean getFlushStatus(); |
| |
| public ILSMOperationTracker getOperationTracker(); |
| |
| public ILSMIOOperationScheduler getIOScheduler(); |
| |
| public List<ILSMComponent> getImmutableComponents(); |
| } |