OwningState.java

package com.nicewuerfel.blockown;

import com.google.common.base.Optional;

import java.util.Date;

import javax.annotation.Nonnull;

/**
 * Represents a owning ({@link Ownable}-{@link User}-Mapping at a specific time.
 *
 * @author Pheasn
 */
public final class OwningState {

  @Nonnull
  private final Ownable ownable;
  @Nonnull
  private final Optional<User> user;
  private final long timeStamp;

  public OwningState(@Nonnull Ownable ownable, @Nonnull Optional<User> user) {
    this.ownable = ownable;
    this.user = user;
    this.timeStamp = System.currentTimeMillis();
  }

  public Ownable getOwnable() {
    return ownable;
  }

  public Optional<User> getUser() {
    return user;
  }

  public Date getTimeStamp() {
    return new Date(timeStamp);
  }
}