package sk.stuba.fiit.perconik.core.services;

import javax.annotation.Nullable;

/**
 * An abstract implementation of {@link Provider}
 * interface covering provider name and equivalence.
 *
 * @author Pavol Zbell
 * @since 1.0
 */
public abstract class AbstractProvider implements Provider {
  /**
   * Constructor for use by subclasses.
   */
  protected AbstractProvider() {}

  /**
   * {@inheritDoc}
   */
  @Override
  public final boolean equals(@Nullable final Object o) {
    if (this == o) {
      return true;
    }

    if (!(o instanceof Provider)) {
      return false;
    }

    Provider other = (Provider) o;

    return this.getName().equals(other.getName());
  }

  /**
   * {@inheritDoc}
   */
  @Override
  public final int hashCode() {
    return this.getName().hashCode();
  }

  /**
   * Converts provider to string consisting of its name.
   */
  @Override
  public final String toString() {
    return this.getName();
  }

  /**
   * Returns provider name.
   */
  public final String getName() {
    return this.getClass().getName();
  }
}