Schema.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.SCHEMA_APPLICATION_ID;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_CREATED_TIME;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_CREATED_USERNAME;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_DESCRIPTION;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_ENDPOINT_COUNT;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_NAME;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_SCHEMA;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_TABLE_NAME;
import static org.kaaproject.kaa.server.common.dao.DaoConstants.SCHEMA_VERSION;
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.AbstractSchemaDto;
import org.kaaproject.kaa.common.dto.VersionDto;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.JoinColumn;
import javax.persistence.Lob;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

@Entity
@Table(name = SCHEMA_TABLE_NAME)
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class Schema<T extends AbstractSchemaDto> extends GenericModel<T> {

  private static final long serialVersionUID = 2866125011338808891L;

  @Column(name = SCHEMA_VERSION)
  protected int version;

  @Lob
  @Column(name = SCHEMA_SCHEMA)
  protected String schema;

  @Column(name = SCHEMA_NAME)
  protected String name;

  @Column(name = SCHEMA_DESCRIPTION)
  protected String description;

  @Column(name = SCHEMA_CREATED_USERNAME)
  protected String createdUsername;

  @Column(name = SCHEMA_CREATED_TIME)
  protected long createdTime;

  @Column(name = SCHEMA_ENDPOINT_COUNT)
  protected long endpointCount;

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

  public Schema() {
  }

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

  /**
   * Create new instance of <code>Schema</code>.
   *
   * @param dto data transfer object contain data that assign on fields of new instance
   */
  public Schema(T dto) {
    if (dto != null) {
      this.id = getLongId(dto);
      Long appId = getLongId(dto.getApplicationId());
      this.application = appId != null ? new Application(appId) : null;
      this.version = dto.getVersion();
      this.schema = dto.getSchema();
      this.name = dto.getName();
      this.description = dto.getDescription();
      this.createdUsername = dto.getCreatedUsername();
      this.createdTime = dto.getCreatedTime();
      this.endpointCount = dto.getEndpointCount();
    }
  }

  public int getVersion() {
    return version;
  }

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

  public String getSchema() {
    return schema;
  }

  public void setSchema(String schema) {
    this.schema = schema;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public String getDescription() {
    return description;
  }

  public void setDescription(String description) {
    this.description = description;
  }

  public String getCreatedUsername() {
    return createdUsername;
  }

  public void setCreatedUsername(String createdUsername) {
    this.createdUsername = createdUsername;
  }

  public long getCreatedTime() {
    return createdTime;
  }

  public void setCreatedTime(long createdTime) {
    this.createdTime = createdTime;
  }

  public long getEndpointCount() {
    return endpointCount;
  }

  public void setEndpointCount(long endpointCount) {
    this.endpointCount = endpointCount;
  }

  public Application getApplication() {
    return application;
  }

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

  /**
   * Get id of application.
   *
   * @return id, return null if application hasn't id
   */
  public String getApplicationId() {
    Long id = null;
    if (application != null) {
      id = application.getId();
    }
    return id != null ? String.valueOf(id) : null;
  }

  @Override
  public int hashCode() {
    final int prime = 33;
    int result = 1;
    result = prime * result + ((id == null) ? 0 : id.hashCode());
    result = prime * result + version;
    result = prime * result + ((schema == null) ? 0 : schema.hashCode());
    result = prime * result + ((name == null) ? 0 : name.hashCode());
    result = prime * result + ((description == null) ? 0 : description.hashCode());
    result = prime * result + ((createdUsername == null) ? 0 : createdUsername.hashCode());
    result = prime * result + Long.valueOf(createdTime).hashCode();
    result = prime * result + Long.valueOf(endpointCount).hashCode();
    result = prime * result + ((application == null) ? 0 : application.hashCode());
    return result;
  }

  @Override
  @SuppressWarnings("unchecked")
  public boolean equals(Object obj) {
    if (this == obj) {
      return true;
    }
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    Schema<T> other = (Schema<T>) obj;
    if (id == null) {
      if (other.id != null) {
        return false;
      }
    } else if (!id.equals(other.id)) {
      return false;
    }
    if (version != other.version) {
      return false;
    }
    if (schema == null) {
      if (other.schema != null) {
        return false;
      }
    } else if (!schema.equals(other.schema)) {
      return false;
    }
    if (name == null) {
      if (other.name != null) {
        return false;
      }
    } else if (!name.equals(other.name)) {
      return false;
    }
    if (description == null) {
      if (other.description != null) {
        return false;
      }
    } else if (!description.equals(other.description)) {
      return false;
    }
    if (createdUsername == null) {
      if (other.createdUsername != null) {
        return false;
      }
    } else if (!createdUsername.equals(other.createdUsername)) {
      return false;
    }
    if (createdTime != other.createdTime) {
      return false;
    }
    if (endpointCount != other.endpointCount) {
      return false;
    }
    if (application == null) {
      if (other.application != null) {
        return false;
      }
    } else if (!application.equals(other.application)) {
      return false;
    }
    return true;
  }

  @Override
  public String toString() {
    return "Schema [id=" + id
            + ", version=" + version
            + ", schema=" + schema + ", name=" + name
            + ", description=" + description
            + ", createdUsername=" + createdUsername
            + ", createdTime=" + createdTime
            + ", endpointCount=" + endpointCount + "]";
  }

  @Override
  public T toDto() {
    T dto = createDto();
    dto.setId(getStringId());
    if (application != null) {
      dto.setApplicationId(application.getStringId());
    }
    dto.setVersion(version);
    dto.setSchema(schema);
    dto.setName(name);
    dto.setDescription(description);
    dto.setCreatedUsername(createdUsername);
    dto.setCreatedTime(createdTime);
    dto.setEndpointCount(endpointCount);
    return dto;
  }

  /**
   * Return <code>VersionDto</code> instance that contain id and version of schema.
   *
   * @return dto
   */
  public VersionDto toVersionDto() {
    VersionDto dto = new VersionDto();
    dto.setId(getStringId());
    dto.setVersion(version);
    return dto;
  }
}