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 java.util.Collection;
   6 import java.util.HashSet;
   7
   8 import net.pterodactylus.sone.data.Client;
   9 import net.pterodactylus.sone.data.Post;
  10 import net.pterodactylus.sone.database.SoneBuilder;
  11 import net.pterodactylus.sone.freenet.wot.Identity;
  12 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  13
  14 /**
  15  * Abstract {@link SoneBuilder} implementation.
  16  *
  17  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  18  */
  19 public abstract class AbstractSoneBuilder implements SoneBuilder {
  20
  21         protected Identity identity;
  22         protected boolean local;
  23         protected long lastUpdated;
  24         protected Client client;
  25         protected final Collection<Post> posts = new HashSet<Post>();
  26
  27         @Override
  28         public SoneBuilder from(Identity identity) {
  29                 this.identity = identity;
  30                 return this;
  31         }
  32
  33         @Override
  34         public SoneBuilder local() {
  35                 this.local = true;
  36                 return this;
  37         }
  38
  39         @Override
  40         public SoneBuilder lastUpdated(long lastUpdated) {
  41                 this.lastUpdated = lastUpdated;
  42                 return this;
  43         }
  44
  45         @Override
  46         public SoneBuilder using(Client client) {
  47                 this.client = client;
  48                 return this;
  49         }
  50
  51         @Override
  52         public SoneBuilder withPosts(Collection<Post> posts) {
  53                 this.posts.clear();
  54                 this.posts.addAll(posts);
  55                 return this;
  56         }
  57
  58         protected void validate() throws IllegalStateException {
  59                 checkState(identity != null, "identity must not be null");
  60                 checkState(!local || (identity instanceof OwnIdentity),
  61                                 "can not create local Sone from remote identity");
  62                 checkState(lastUpdated > 0, "last update time must be set");
  63                 checkState(client != null, "client must not be null");
  64         }
  65
  66 }