ByteArray.java :  » Database-DBMS » db4o-6.4 » com » db4o » test » legacy » Java Open Source

/* Copyright (C) 2004 - 2007  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
package com.db4o.test.legacy;

import java.io.*;

import com.db4o.*;
import com.db4o.config.*;
import com.db4o.query.*;
import com.db4o.test.*;

public class ByteArray {

  public static interface IByteArrayHolder {
    byte[] getBytes();
  }

  public static class ByteArrayHolder implements IByteArrayHolder {
    
    public byte[] _bytes;
    
    public ByteArrayHolder(byte[] bytes) {
      this._bytes = bytes;
    }
    
    public byte[] getBytes() {
      return _bytes;
    }
  }

  public static class SerializableByteArrayHolder implements Serializable, IByteArrayHolder {

    private static final long serialVersionUID = 1L;
    
    public byte[] _bytes;
    
    public SerializableByteArrayHolder(byte[] bytes) {
      this._bytes = bytes;
    }
    
    public byte[] getBytes() {
      return _bytes;
    }  
  }

  static final int INSTANCES = 2;
  
  static final int ARRAY_LENGTH = 1024*512;
  
  public void store() {
    Test.close();
    
    com.db4o.Db4o.configure().objectClass(SerializableByteArrayHolder.class).translate(new TSerializable());    
    Test.open();
    
    for (int i=0; i<INSTANCES; ++i) {
      Test.store(new ByteArrayHolder(createByteArray()));
      Test.store(new SerializableByteArrayHolder(createByteArray()));
    }
  }
  
  public void testByteArrayHolder() {
    timeQueryLoop("raw byte array", ByteArrayHolder.class);
  }
  
  public void testSerializableByteArrayHolder() {
    timeQueryLoop("TSerializable", SerializableByteArrayHolder.class);
  }

  private void timeQueryLoop(String label, final Class clazz) {

    Test.close();
    Test.open();

    Query query = Test.query();
    query.constrain(clazz);

    ObjectSet os = query.execute();
    Test.ensure(INSTANCES == os.size());

    while (os.hasNext()) {
      Test.ensure(ARRAY_LENGTH == ((IByteArrayHolder) os.next())
          .getBytes().length);
    }
  }
  
  byte[] createByteArray() {
    byte[] bytes = new byte[ARRAY_LENGTH];
    for (int i=0; i<bytes.length; ++i) {
      bytes[i] = (byte)(i % 256);
    }
    return bytes;
  }
}