/*
* @(#)$Id$
*
* Copyright 2006-2008 Makoto YUI
*
* 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 at
*
* 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
package xbird.storage.io;
import java.io.File;
import java.io.IOException;
import xbird.storage.DbException;
import xbird.storage.index.BIndexFile;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
* @deprecated
*/
public final class VarSegmentsBFile implements Segments {
private final BIndexFile bfile;
public VarSegmentsBFile(File file) {
final BIndexFile bf = new BIndexFile(file, false);
try {
bf.init(false);
} catch (DbException e) {
throw new IllegalStateException("failed on initializing BFile: "
+ file.getAbsolutePath(), e);
}
this.bfile = bf;
}
public File getFile() {
return bfile.getFile();
}
public byte[] read(long idx) throws IOException {
try {
return bfile.getValueBytes(idx); //FIXME synchronized
} catch (DbException e) {
throw new IOException("read failed on idx#" + idx);
}
}
public byte[][] readv(long[] idx) throws IOException {
final int len = idx.length;
final byte[][] pages = new byte[len][];
for(int i = 0; i < len; i++) {
pages[i] = read(idx[i]);
}
return pages;
}
public long write(long idx, byte[] b) throws IOException {
try {
return bfile.putValue(idx, b);
} catch (DbException e) {
throw new IOException("write failed on idx#" + idx);
}
}
public void close() throws IOException {
try {
bfile.close();
} catch (DbException e) {
throw new IOException("close failed: " + bfile.getFile().getAbsolutePath());
}
}
public void flush(boolean close) throws IOException {
try {
bfile.flush(true, true);
} catch (DbException e) {
throw new IOException("flush failed: " + bfile.getFile().getAbsolutePath());
}
if(close) {
close();
}
}
}