| package edu.uci.ics.hyracks.storage.am.lsm.common.impls; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| |
| 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.lsm.common.api.ILSMComponent; |
| 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.ILSMIndexAccessorInternal; |
| |
| public class LSMFlushOperation implements ILSMIOOperation { |
| |
| private final ILSMIndexAccessorInternal accessor; |
| private final ILSMComponent flushingComponent; |
| private final FileReference flushTarget; |
| private final ILSMIOOperationCallback callback; |
| |
| public LSMFlushOperation(ILSMIndexAccessorInternal accessor, ILSMComponent flushingComponent, |
| FileReference flushTarget, ILSMIOOperationCallback callback) { |
| this.accessor = accessor; |
| this.flushingComponent = flushingComponent; |
| this.flushTarget = flushTarget; |
| this.callback = callback; |
| } |
| |
| @Override |
| public Set<IODeviceHandle> getReadDevices() { |
| return Collections.emptySet(); |
| } |
| |
| @Override |
| public Set<IODeviceHandle> getWriteDevices() { |
| return Collections.singleton(flushTarget.getDeviceHandle()); |
| } |
| |
| @Override |
| public void perform() throws HyracksDataException, IndexException { |
| accessor.flush(this); |
| } |
| |
| @Override |
| public ILSMIOOperationCallback getCallback() { |
| return callback; |
| } |
| |
| public FileReference getFlushTarget() { |
| return flushTarget; |
| } |
| |
| public ILSMIndexAccessorInternal getAccessor() { |
| return accessor; |
| } |
| |
| public ILSMComponent getFlushingComponent() { |
| return flushingComponent; |
| } |
| } |