BasicReference.java

package de.dlr.shepard.neo4Core.entities;

import de.dlr.shepard.util.Constants;
import de.dlr.shepard.util.HasId;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
import org.neo4j.ogm.annotation.NodeEntity;
import org.neo4j.ogm.annotation.Relationship;
import org.neo4j.ogm.annotation.Relationship.Direction;

@NodeEntity
@Data
@ToString(callSuper = true, onlyExplicitlyIncluded = true)
@NoArgsConstructor
public class BasicReference extends VersionableEntity {

  @Relationship(type = Constants.HAS_REFERENCE, direction = Direction.INCOMING)
  private DataObject dataObject;

  /**
   * For testing purposes only
   *
   * @param id identifies the entity
   */
  public BasicReference(long id) {
    super(id);
  }

  /**
   * Returns the name of the implemented class
   *
   * @return the simple class name
   */
  public String getType() {
    return this.getClass().getSimpleName();
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = super.hashCode();
    result = prime * result + HasId.hashcodeHelper(dataObject);
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj) return true;
    if (!super.equals(obj)) return false;
    if (!(obj instanceof BasicReference)) return false;
    BasicReference other = (BasicReference) obj;
    return HasId.equalsHelper(dataObject, other.dataObject);
  }
}