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.data.Client;
   6 import net.pterodactylus.sone.database.SoneBuilder;
   7 import net.pterodactylus.sone.freenet.wot.Identity;
   8 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
   9
  10 /**
  11  * Abstract {@link SoneBuilder} implementation.
  12  *
  13  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  14  */
  15 public abstract class AbstractSoneBuilder implements SoneBuilder {
  16
  17         protected Identity identity;
  18         protected boolean local;
  19         protected long lastUpdated;
  20         protected Client client;
  21
  22         @Override
  23         public SoneBuilder from(Identity identity) {
  24                 this.identity = identity;
  25                 return this;
  26         }
  27
  28         @Override
  29         public SoneBuilder local() {
  30                 this.local = true;
  31                 return this;
  32         }
  33
  34         @Override
  35         public SoneBuilder lastUpdated(long lastUpdated) {
  36                 this.lastUpdated = lastUpdated;
  37                 return this;
  38         }
  39
  40         @Override
  41         public SoneBuilder using(Client client) {
  42                 this.client = client;
  43                 return this;
  44         }
  45
  46         protected void validate() throws IllegalStateException {
  47                 checkState(identity != null, "identity must not be null");
  48                 checkState(!local || (identity instanceof OwnIdentity),
  49                                 "can not create local Sone from remote identity");
  50                 checkState(lastUpdated > 0, "last update time must be set");
  51                 checkState(client != null, "client must not be null");
  52         }
  53
  54 }