blob: 31e98218a2f0e4621a2095b103ddb3c42c5082d9 [file] [log] [blame]
/*
* Copyright 2009-2010 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.api.io;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.channels.FileChannel;
public class FileHandle {
private final FileReference fileRef;
private RandomAccessFile raf;
private FileChannel channel;
public FileHandle(FileReference fileRef) {
this.fileRef = fileRef;
}
public void open(IIOManager.FileReadWriteMode rwMode, IIOManager.FileSyncMode syncMode) throws IOException {
String mode;
switch (rwMode) {
case READ_ONLY:
mode = "r";
break;
case READ_WRITE:
fileRef.getFile().getAbsoluteFile().getParentFile().mkdirs();
switch (syncMode) {
case METADATA_ASYNC_DATA_ASYNC:
mode = "rw";
break;
case METADATA_ASYNC_DATA_SYNC:
mode = "rwd";
break;
case METADATA_SYNC_DATA_SYNC:
mode = "rws";
break;
default:
throw new IllegalArgumentException();
}
break;
default:
throw new IllegalArgumentException();
}
raf = new RandomAccessFile(fileRef.getFile(), mode);
channel = raf.getChannel();
}
public void close() throws IOException {
channel.close();
raf.close();
}
public FileReference getFileReference() {
return fileRef;
}
public RandomAccessFile getRandomAccessFile() {
return raf;
}
public FileChannel getFileChannel() {
return channel;
}
}