--- /dev/null
+/*
+ * Sone - PostReplyBuilder.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.database;
+
+import net.pterodactylus.sone.data.PostReply;
+
+/**
+ * Builder for a {@link PostReply} object.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public interface PostReplyBuilder extends ReplyBuilder<PostReplyBuilder> {
+
+ /**
+ * Configures this builder to set the given post as post the created reply
+ * refers to.
+ *
+ * @param postId
+ * The ID of the post the reply refers to
+ * @return This builder
+ */
+ public PostReplyBuilder to(String postId);
+
+ /**
+ * Verifies the configuration of this builder and creates a new post reply.
+ * <p>
+ * The following conditions must be met in order for the configuration to be
+ * considered valid:
+ * <ul>
+ * <li>Exactly one of {@link #randomId()} or {@link #withId(String)} must
+ * have been called.</li>
+ * <li>The {@link #from(String) sender} must not be {@code null}.</li>
+ * <li>Exactly one of {@link #currentTime()} or {@link #withTime(long)} must
+ * have been called.</li>
+ * <li>The {@link #withText(String) text} must not be {@code null} and must
+ * contain something other than whitespace.</li>
+ * <li>The {@link #to(String) post} have been set.</li>
+ * </ul>
+ *
+ * @return The created post reply
+ * @throws IllegalStateException
+ * if this builder’s configuration is not valid
+ */
+ public PostReply build() throws IllegalStateException;
+
+}