| /* |
| * 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.invertedindex.impls; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.api.io.FileReference; |
| import edu.uci.ics.hyracks.api.io.IODeviceHandle; |
| import edu.uci.ics.hyracks.storage.am.common.api.IndexException; |
| import edu.uci.ics.hyracks.storage.am.common.impls.NoOpOperationCallback; |
| import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIOOperation; |
| import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIOOperationCallback; |
| import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIndex; |
| import edu.uci.ics.hyracks.storage.am.lsm.common.api.ILSMIndexAccessor; |
| |
| public class LSMInvertedIndexFlushOperation implements ILSMIOOperation { |
| private final ILSMIndex index; |
| private final FileReference dictBTreeFlushTarget; |
| private final FileReference deletedKeysBTreeFlushTarget; |
| private final ILSMIOOperationCallback callback; |
| |
| public LSMInvertedIndexFlushOperation(ILSMIndex index, FileReference dictBTreeFlushTarget, |
| FileReference deletedKeysBTreeFlushTarget, ILSMIOOperationCallback callback) { |
| this.index = index; |
| this.dictBTreeFlushTarget = dictBTreeFlushTarget; |
| this.deletedKeysBTreeFlushTarget = deletedKeysBTreeFlushTarget; |
| this.callback = callback; |
| } |
| |
| @Override |
| public List<IODeviceHandle> getReadDevices() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public List<IODeviceHandle> getWriteDevices() { |
| return Collections.singletonList(dictBTreeFlushTarget.getDevideHandle()); |
| } |
| |
| @Override |
| public void perform() throws HyracksDataException, IndexException { |
| ILSMIndexAccessor accessor = (ILSMIndexAccessor) index.createAccessor(NoOpOperationCallback.INSTANCE, |
| NoOpOperationCallback.INSTANCE); |
| accessor.flush(this); |
| } |
| |
| @Override |
| public ILSMIOOperationCallback getCallback() { |
| return callback; |
| } |
| |
| public FileReference getDictBTreeFlushTarget() { |
| return dictBTreeFlushTarget; |
| } |
| |
| public FileReference getDeletedKeysBTreeFlushTarget() { |
| return deletedKeysBTreeFlushTarget; |
| } |
| } |