History.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.server.common.dao.model.sql;

import static org.kaaproject.kaa.server.common.dao.DaoConstants.HISTORY_APPLICATION_ID;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.HISTORY_CHANGE_ID;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.HISTORY_LAST_MODIFY_TIME;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.HISTORY_SEQUENCE_NUMBER;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.HISTORY_TABLE_NAME;
import static org.kaaproject.kaa.server.common.dao.model.sql.ModelUtils.getLongId;

import org.hibernate.annotations.OnDelete;
import org.hibernate.annotations.OnDeleteAction;
import org.kaaproject.kaa.common.dto.HistoryDto;

import java.io.Serializable;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

@Entity
@Table(name = HISTORY_TABLE_NAME)
public class History extends GenericModel<HistoryDto> implements Serializable {

  private static final long serialVersionUID = 2061028534480732230L;

  @Column(name = HISTORY_SEQUENCE_NUMBER)
  private int sequenceNumber;

  @Column(name = HISTORY_LAST_MODIFY_TIME)
  private long lastModifyTime;

  @ManyToOne(fetch = FetchType.LAZY)
  @JoinColumn(name = HISTORY_APPLICATION_ID, nullable = false)
  @OnDelete(action = OnDeleteAction.CASCADE)
  private Application application;

  @ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
  @JoinColumn(name = HISTORY_CHANGE_ID, nullable = false)
  private Change change;

  public History() {
  }

  public History(Long id) {
    this.id = id;
  }

  /**
   * Create new instance of <code>History</code>.
   * @param dto data transfer object contain data that
   *            assign on fields of new instance
   */
  public History(HistoryDto dto) {
    if (dto != null) {
      this.id = getLongId(dto);
      this.sequenceNumber = dto.getSequenceNumber();
      this.change = new Change(dto.getChange());
      this.lastModifyTime = dto.getLastModifyTime();
      Long applicationId = getLongId(dto.getApplicationId());
      if (applicationId != null) {
        this.application = new Application(applicationId);
      }
    }
  }

  public int getSequenceNumber() {
    return sequenceNumber;
  }

  public void setSequenceNumber(int sequenceNumber) {
    this.sequenceNumber = sequenceNumber;
  }

  public Application getApplication() {
    return application;
  }

  public void setApplication(Application application) {
    this.application = application;
  }

  public Change getChange() {
    return change;
  }

  public void setChange(Change change) {
    this.change = change;
  }

  public long getLastModifyTime() {
    return lastModifyTime;
  }

  public void setLastModifyTime(long lastModifyTime) {
    this.lastModifyTime = lastModifyTime;
  }

  @Override
  protected HistoryDto createDto() {
    return new HistoryDto();
  }

  @Override
  protected GenericModel<HistoryDto> newInstance(Long id) {
    return new History(id);
  }

  @Override
  public HistoryDto toDto() {
    HistoryDto dto = createDto();
    dto.setId(getStringId());
    if (application != null) {
      dto.setApplicationId(application.getStringId());
    }
    dto.setChange(change != null ? change.toDto() : null);
    dto.setSequenceNumber(sequenceNumber);
    dto.setLastModifyTime(lastModifyTime);
    return dto;
  }

  @Override
  public int hashCode() {
    final int prime = 41;
    int result = 1;
    result = prime * result + ((id == null) ? 0 : id.hashCode());
    result = prime * result + sequenceNumber;
    result = prime * result + Long.valueOf(lastModifyTime).hashCode();
    result = prime * result + ((application == null) ? 0 : application.hashCode());
    result = prime * result + ((change == null) ? 0 : change.hashCode());
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    History other = (History) obj;
    if (id == null) {
      if (other.id != null) {
        return false;
      }
    } else if (!id.equals(other.id)) {
      return false;
    }
    if (sequenceNumber != other.sequenceNumber) {
      return false;
    }
    if (lastModifyTime != other.lastModifyTime) {
      return false;
    }
    if (application == null) {
      if (other.application != null) {
        return false;
      }
    } else if (!application.equals(other.application)) {
      return false;
    }
    if (change == null) {
      if (other.change != null) {
        return false;
      }
    } else if (!change.equals(other.change)) {
      return false;
    }
    return true;
  }

  @Override
  public String toString() {
    return "History [sequenceNumber=" + sequenceNumber
            + ", lastModifyTime=" + lastModifyTime
            + ", change=" + change
            + ", id=" + id + "]";
  }

}