bufferserver/src/main/java/com/datatorrent/bufferserver/util/Codec.java

/**
 * Copyright (C) 2015 DataTorrent, 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 com.datatorrent.bufferserver.util;

/**
 * <p>Codec class.</p>
 *
 * @since 0.9.1
 */
public class Codec
{
  public static final long INVALID_WINDOW_ID = -1;
  public static final String UNPARSEABLE_WINDOW_ID = Long.toHexString(INVALID_WINDOW_ID);
  public static String getStringWindowId(long windowId)
  {
    if (windowId == INVALID_WINDOW_ID) {
      return UNPARSEABLE_WINDOW_ID;
    }

    return Long.toHexString(windowId);
  }

  public static long getLongWindowId(String windowId)
  {
    if (UNPARSEABLE_WINDOW_ID.equals(windowId)) {
      return INVALID_WINDOW_ID;
    }

    return Long.parseLong(windowId, 16);
  }
}