Add builder for post replies.

[Sone.git] / src / main / java / net / pterodactylus / sone / data / impl / PostReplyBuilderImpl.java

diff --git a/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java b/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java
new file mode 100644 (file)
index 0000000..756f28e
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java
@@ -0,0 +1,69 @@
+/*
+ * Sone - PostReplyBuilderImpl.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.data.impl;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import java.util.UUID;
+
+import net.pterodactylus.sone.data.Post;
+import net.pterodactylus.sone.data.PostReply;
+import net.pterodactylus.sone.data.PostReplyBuilder;
+
+import org.apache.commons.lang.StringUtils;
+
+/**
+ * {@link PostReplyBuilder} implementation that creates {@link PostReplyImpl}
+ * objects.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class PostReplyBuilderImpl extends AbstractReplyBuilder<PostReplyBuilderImpl, PostReplyBuilder> implements PostReplyBuilder {
+
+       /** The post the created reply refers to. */
+       private Post post;
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public PostReplyBuilder to(Post post) {
+               this.post = post;
+               return this;
+       }
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public PostReply build() {
+               checkState((randomId && (id == null)) || (!randomId && (id != null)), "either random ID nor custom ID must be set");
+               checkState(sender != null, "sender must not be null");
+               checkState((currentTime && (time == 0)) || (!currentTime && (time >= 0)), "either current time or custom time must be set");
+               checkState(!StringUtils.isBlank(text), "text must not be empty");
+               checkState(post != null, "post must not be null");
+
+               /* create new post reply. */
+               PostReplyImpl postReplyImpl = new PostReplyImpl(randomId ? UUID.randomUUID().toString() : id);
+               postReplyImpl.setSone(sender);
+               postReplyImpl.setPost(post);
+               postReplyImpl.setTime(currentTime ? System.currentTimeMillis() : time);
+               postReplyImpl.setText(text);
+               return postReplyImpl;
+       }
+}