VersionDto.java

/*
 * Copyright 2014-2016 CyberVision, 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 org.kaaproject.kaa.common.dto;

import java.io.Serializable;

public class VersionDto implements HasId, Serializable, Comparable<VersionDto> {

  private static final long serialVersionUID = -7073061086587077053L;

  protected String id;
  protected int version;

  public VersionDto() {
    super();
  }

  /**
   * Instantiates a new VersionDto.
   * @param id        the id
   * @param version   the version
   */
  public VersionDto(String id, int version) {
    super();
    this.id = id;
    this.version = version;
  }

  public String getId() {
    return id;
  }

  public void setId(String id) {
    this.id = id;
  }

  public int getVersion() {
    return version;
  }

  public void setVersion(int version) {
    this.version = version;
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((id == null) ? 0 : id.hashCode());
    result = prime * result + version;
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    VersionDto other = (VersionDto) obj;
    if (id == null) {
      if (other.id != null) {
        return false;
      }
    } else if (!id.equals(other.id)) {
      return false;
    }
    if (version != other.version) {
      return false;
    }
    return true;
  }

  @Override
  public String toString() {
    StringBuilder builder = new StringBuilder();
    builder.append("VersionDto [id=");
    builder.append(id);
    builder.append(", version=");
    builder.append(version);
    builder.append("]");
    return builder.toString();
  }

  @Override
  public int compareTo(VersionDto versionDto) {
    if (versionDto != null) {
      return version - versionDto.getVersion();
    } else {
      return 1;
    }
  }


}