Extract abstract post reply builder class.

diff --git a/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostReplyBuilder.java b/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostReplyBuilder.java
new file mode 100644 (file)
index 0000000..952a94e
--- /dev/null
+++ b/src/main/java/net/pterodactylus/sone/data/impl/AbstractPostReplyBuilder.java
@@ -0,0 +1,65 @@
+/*
+ * Sone - AbstractPostReplyBuilder.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 org.apache.commons.lang.StringUtils;
+
+import net.pterodactylus.sone.database.PostReplyBuilder;
+
+/**
+ * Abstract {@link PostReplyBuilder} implementation. It stores the state of the
+ * new post and performs validation, implementations only need to implement
+ * {@link #build()}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public abstract class AbstractPostReplyBuilder extends AbstractReplyBuilder<PostReplyBuilder> implements PostReplyBuilder {
+
+       /** The ID of the post the created reply refers to. */
+       protected String postId;
+
+       /**
+        * {@inheritDoc}
+        */
+       @Override
+       public PostReplyBuilder to(String postId) {
+               this.postId = postId;
+               return this;
+       }
+
+       //
+       // PROTECTED METHODS
+       //
+
+       /**
+        * Validates the state of this post reply builder.
+        *
+        * @throws IllegalStateException
+        *             if the state is not valid for building a new post reply
+        */
+       protected void validate() throws IllegalStateException {
+               checkState((randomId && (id == null)) || (!randomId && (id != null)), "either random ID nor custom ID must be set");
+               checkState(senderId != 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(postId != null, "post must not be null");
+       }
+
+}

diff --git a/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java b/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java
index da18f96..dac84ad 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java
+++ b/src/main/java/net/pterodactylus/sone/data/impl/PostReplyBuilderImpl.java
@@ -34,7 +34,7 @@ import org.apache.commons.lang.StringUtils;
  *
  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  */
-public class PostReplyBuilderImpl extends AbstractReplyBuilder<PostReplyBuilder> implements PostReplyBuilder {
+public class PostReplyBuilderImpl extends AbstractPostReplyBuilder {
 
        /** The Sone provider. */
        private final SoneProvider soneProvider;
@@ -42,9 +42,6 @@ public class PostReplyBuilderImpl extends AbstractReplyBuilder<PostReplyBuilder>
        /** The post provider. */
        private final PostProvider postProvider;
 
-       /** The ID of the post the created reply refers to. */
-       private String postId;
-
        /**
         * Creates a new post reply builder.
         *
@@ -62,15 +59,6 @@ public class PostReplyBuilderImpl extends AbstractReplyBuilder<PostReplyBuilder>
         * {@inheritDoc}
         */
        @Override
-       public PostReplyBuilder to(String postId) {
-               this.postId = postId;
-               return this;
-       }
-
-       /**
-        * {@inheritDoc}
-        */
-       @Override
        public PostReply build() {
                checkState((randomId && (id == null)) || (!randomId && (id != null)), "either random ID nor custom ID must be set");
                checkState(senderId != null, "sender must not be null");
@@ -81,4 +69,5 @@ public class PostReplyBuilderImpl extends AbstractReplyBuilder<PostReplyBuilder>
                /* create new post reply. */
                return new PostReplyImpl(soneProvider, postProvider, randomId ? UUID.randomUUID().toString() : id, senderId, currentTime ? System.currentTimeMillis() : time, text, postId);
        }
+
 }