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 package org.apache.lucene.store.db;

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You 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.
import  com.sleepycat.db.DatabaseEntry;
import  com.sleepycat.db.internal.Db;
import  com.sleepycat.db.internal.DbTxn;
import  com.sleepycat.db.DatabaseException;
public class Block extends Object {
    protected DatabaseEntry keydata;
    protected Block(File file)
        throws IOException
    {
        byte[] fileKey = file.getKey();
         = new DatabaseEntry(new byte[fileKey.length + 8]);
        .setUserBuffer(fileKey.length + 8, true);
         = new DatabaseEntry(new byte[.]);
        .setUserBuffer(.getSize(), true);
        System.arraycopy(fileKey, 0, .getData(), 0, fileKey.length);
        seek(0L);
    }
    protected byte[] getKey()
    {
        return .getData();
    }
    protected byte[] getData()
    {
        return .getData();
    }
    protected void seek(long position)
        throws IOException
    {
        byte[] data = .getData();
        int index = data.length - 8;
        position >>>= .;
        data[index + 0] = (byte) (0xff & (position >>> 56));
        data[index + 1] = (byte) (0xff & (position >>> 48));
        data[index + 2] = (byte) (0xff & (position >>> 40));
        data[index + 3] = (byte) (0xff & (position >>> 32));
        data[index + 4] = (byte) (0xff & (position >>> 24));
        data[index + 5] = (byte) (0xff & (position >>> 16));
        data[index + 6] = (byte) (0xff & (position >>>  8));
        data[index + 7] = (byte) (0xff & (position >>>  0));
    }
    protected void get(DbDirectory directory)
        throws IOException
    {
        try {
            directory.blocks.get(directory.txndirectory.flags);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }
    protected void put(DbDirectory directory)
        throws IOException
    {
        try {
            directory.blocks.put(directory.txn, 0);
        } catch (DatabaseException e) {
            throw new IOException(e.getMessage());
        }
    }
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