src/main/java/net/pterodactylus/sone/data/impl/AbstractSoneBuilder.java

   1 package net.pterodactylus.sone.data.impl;
   2
   3 import static com.google.common.base.Preconditions.checkState;
   4
   5 import net.pterodactylus.sone.database.SoneBuilder;
   6 import net.pterodactylus.sone.freenet.wot.Identity;
   7 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
   8
   9 /**
  10  * Abstract {@link SoneBuilder} implementation.
  11  *
  12  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  13  */
  14 public abstract class AbstractSoneBuilder implements SoneBuilder {
  15
  16         protected Identity identity;
  17         protected boolean local;
  18         protected long lastUpdated;
  19
  20         @Override
  21         public SoneBuilder from(Identity identity) {
  22                 this.identity = identity;
  23                 return this;
  24         }
  25
  26         @Override
  27         public SoneBuilder local() {
  28                 this.local = true;
  29                 return this;
  30         }
  31
  32         @Override
  33         public SoneBuilder lastUpdated(long lastUpdated) {
  34                 this.lastUpdated = lastUpdated;
  35                 return this;
  36         }
  37
  38         protected void validate() throws IllegalStateException {
  39                 checkState(identity != null, "identity must not be null");
  40                 checkState(!local || (identity instanceof OwnIdentity),
  41                                 "can not create local Sone from remote identity");
  42                 checkState(lastUpdated > 0, "last update time must be set");
  43         }
  44
  45 }