From e610c996f0107cf3c9dc489e67c1eaebfeb73551 Mon Sep 17 00:00:00 2001
From: Alexander Alexeev
Date: Sun, 13 Nov 2016 23:49:29 +0700
Subject: using TagUtils class

---
 .../src/main/java/com/juick/server/TagQueries.java |  6 +-----
 .../com/juick/server/protocol/JuickProtocol.java   |  3 ++-
 .../src/main/java/com/juick/util/TagUtils.java     | 24 ++++++++++++++++++++++
 3 files changed, 27 insertions(+), 6 deletions(-)
 create mode 100644 server-core/src/main/java/com/juick/util/TagUtils.java

diff --git a/server-core/src/main/java/com/juick/server/TagQueries.java b/server-core/src/main/java/com/juick/server/TagQueries.java
index 0e3c0c06..ee9a1e21 100644
--- a/server-core/src/main/java/com/juick/server/TagQueries.java
+++ b/server-core/src/main/java/com/juick/server/TagQueries.java
@@ -106,7 +106,7 @@ public class TagQueries {
                 return stmt;
         }, holder);
 
-        return holder.getKey().intValue();        
+        return holder.getKey().intValue();
     }
 
     public static List<com.juick.Tag> getUserTagsAll(JdbcTemplate sql, int uid) {
@@ -157,8 +157,4 @@ public class TagQueries {
         }
         return Collections.emptyList();
     }
-    public static String toString(List<Tag> tags) {
-        return tags.stream().map(t -> " *" + t.getName())
-                .collect(Collectors.joining());
-    }
 }
diff --git a/server-core/src/main/java/com/juick/server/protocol/JuickProtocol.java b/server-core/src/main/java/com/juick/server/protocol/JuickProtocol.java
index 5faddd3a..e9e129a9 100644
--- a/server-core/src/main/java/com/juick/server/protocol/JuickProtocol.java
+++ b/server-core/src/main/java/com/juick/server/protocol/JuickProtocol.java
@@ -7,6 +7,7 @@ import com.juick.formatters.PlainTextFormatter;
 import com.juick.json.MessageSerializer;
 import com.juick.server.*;
 import com.juick.server.protocol.annotation.UserCommand;
+import com.juick.util.TagUtils;
 import com.juick.xmpp.extensions.JuickMessage;
 import org.springframework.jdbc.core.JdbcTemplate;
 
@@ -66,7 +67,7 @@ public class JuickProtocol {
 
     public ProtocolReply postMessage(User user, String input) {
         List<Tag> tags = TagQueries.fromString(sql, input, false);
-        String body = input.substring(TagQueries.toString(tags).length());
+        String body = input.substring(TagUtils.toString(tags).length());
         int mid = MessagesQueries.createMessage(sql, user.getUID(), body, null, tags);
         SubscriptionsQueries.subscribeMessage(sql, mid, user.getUID());
         //app.events().publishEvent(new JuickMessageEvent(app.messages().getMessage(mid)));
diff --git a/server-core/src/main/java/com/juick/util/TagUtils.java b/server-core/src/main/java/com/juick/util/TagUtils.java
new file mode 100644
index 00000000..157522ab
--- /dev/null
+++ b/server-core/src/main/java/com/juick/util/TagUtils.java
@@ -0,0 +1,24 @@
+package com.juick.util;
+
+import com.juick.Tag;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * Created by aalexeev on 11/13/16.
+ */
+public class TagUtils {
+    private TagUtils() {
+        throw new IllegalStateException();
+    }
+
+    public static String toString(final List<Tag> tags) {
+        if (CollectionUtils.isEmpty(tags))
+            return "";
+
+        return tags.stream().map(t -> " *" + t.getName())
+                .collect(Collectors.joining());
+    }
+}
-- 
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