/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * 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.
 */

package io.druid.segment.data;

/**
 */
public class StartLimitedOffset implements Offset
{
  private final Offset baseOffset;
  private final int limit;

  public StartLimitedOffset(
      Offset baseOffset,
      int limit
  )
  {
    this.baseOffset = baseOffset;
    this.limit = limit;

    while (baseOffset.withinBounds() && baseOffset.getOffset() < limit) {
      baseOffset.increment();
    }
  }

  @Override
  public void increment()
  {
    baseOffset.increment();
  }

  @Override
  public boolean withinBounds()
  {
    return baseOffset.withinBounds();
  }

  @Override
  public Offset clone()
  {
    return new StartLimitedOffset(baseOffset.clone(), limit);
  }

  @Override
  public int getOffset()
  {
    return baseOffset.getOffset();
  }
}
