From c37ed56f884661666b964e47efd23a36be9b24d4 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sun, 10 Jan 2016 16:56:51 +0300
Subject: logger, diamond and arraylist refactoring

---
 .../java/com/juick/server/MessagesQueries.java     | 173 +++++++++++----------
 1 file changed, 89 insertions(+), 84 deletions(-)

(limited to 'src/main/java/com/juick/server/MessagesQueries.java')

diff --git a/src/main/java/com/juick/server/MessagesQueries.java b/src/main/java/com/juick/server/MessagesQueries.java
index 82fef672..4d5683bd 100644
--- a/src/main/java/com/juick/server/MessagesQueries.java
+++ b/src/main/java/com/juick/server/MessagesQueries.java
@@ -25,6 +25,9 @@ import java.sql.Statement;
 import java.sql.Types;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  *
@@ -32,11 +35,13 @@ import java.util.Collections;
  */
 public class MessagesQueries {
 
-    public static int createMessage(Connection sql, int uid, String txt, String attachment, ArrayList<com.juick.Tag> tags) {
+    private static final Logger logger = Logger.getLogger(MessagesQueries.class.getName());
+
+    public static int createMessage(Connection sql, int uid, String txt, String attachment, List<com.juick.Tag> tags) {
         int mid = 0;
 
         PreparedStatement stmt = null;
-        ResultSet rs = null;
+        ResultSet rs;
         try {
             stmt = sql.prepareStatement("INSERT INTO messages(user_id,attach) VALUES (?,?)", Statement.RETURN_GENERATED_KEYS);
             stmt.setInt(1, uid);
@@ -51,7 +56,7 @@ public class MessagesQueries {
                 mid = rs.getInt(1);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(null, stmt);
         }
@@ -73,7 +78,7 @@ public class MessagesQueries {
                 stmt = sql.prepareStatement("INSERT INTO messages_tags(message_id,tag_id) VALUES " + tagsIDs);
                 stmt.executeUpdate();
             } catch (SQLException e) {
-                System.err.println(e);
+                logger.log(Level.SEVERE, "sql exception", e);
             } finally {
                 Utils.finishSQL(null, stmt);
             }
@@ -81,7 +86,7 @@ public class MessagesQueries {
             try {
                 stmt = sql.prepareStatement("INSERT INTO messages_txt(message_id,tags,txt) VALUES (?,?,?)");
                 stmt.setInt(1, mid);
-                if (tagsNames == "") {
+                if (tagsNames.isEmpty()) {
                     stmt.setNull(2, Types.VARCHAR);
                 } else {
                     stmt.setString(2, tagsNames);
@@ -89,7 +94,7 @@ public class MessagesQueries {
                 stmt.setString(3, txt);
                 stmt.executeUpdate();
             } catch (SQLException e) {
-                System.err.println(e);
+                logger.log(Level.SEVERE, "sql exception", e);
             } finally {
                 Utils.finishSQL(null, stmt);
             }
@@ -118,7 +123,7 @@ public class MessagesQueries {
                 ridnew = 0;
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(null, stmt);
         }
@@ -166,7 +171,7 @@ public class MessagesQueries {
                 privacy = rs.getInt(2);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -189,7 +194,7 @@ public class MessagesQueries {
                 ret = rs.getInt(1) == 1;
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -210,7 +215,7 @@ public class MessagesQueries {
                 ret = rs.getInt(1) == 1;
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -255,7 +260,7 @@ public class MessagesQueries {
                 msg.Hidden = rs.getBoolean(13);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -276,7 +281,7 @@ public class MessagesQueries {
                 msg.Text = rs.getString(3);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -307,7 +312,7 @@ public class MessagesQueries {
                 msg.Text = rs.getString(6);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -330,15 +335,15 @@ public class MessagesQueries {
                 user.UName = rs.getString(2);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return user;
     }
 
-    public static ArrayList<com.juick.Tag> getMessageTags(Connection sql, int mid) {
-        ArrayList<com.juick.Tag> tags = new ArrayList<com.juick.Tag>();
+    public static List<com.juick.Tag> getMessageTags(Connection sql, int mid) {
+        List<com.juick.Tag> tags = new ArrayList<>();
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -356,7 +361,7 @@ public class MessagesQueries {
                 tags.add(t);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -364,8 +369,8 @@ public class MessagesQueries {
         return tags;
     }
 
-    public static ArrayList<Integer> getMessageTagsIDs(Connection sql, int mid) {
-        ArrayList<Integer> tids = new ArrayList<Integer>();
+    public static List<Integer> getMessageTagsIDs(Connection sql, int mid) {
+        List<Integer> tids = new ArrayList<>();
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -378,7 +383,7 @@ public class MessagesQueries {
                 tids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -387,7 +392,7 @@ public class MessagesQueries {
     }
 
     public static ArrayList<String> getMessageRecommendations(Connection sql, int mid) {
-        ArrayList<String> users = new ArrayList<String>();
+        ArrayList<String> users = new ArrayList<>();
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -400,7 +405,7 @@ public class MessagesQueries {
                 users.add(rs.getString(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -408,8 +413,8 @@ public class MessagesQueries {
         return users;
     }
 
-    public static ArrayList<Integer> getAll(Connection sql, int visitor_uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getAll(Connection sql, int visitor_uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -448,15 +453,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getTag(Connection sql, int tid, int visitor_uid, int before, int cnt) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getTag(Connection sql, int tid, int visitor_uid, int before, int cnt) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -483,15 +488,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getTags(Connection sql, String tids, int visitor_uid, int before, int cnt) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getTags(Connection sql, String tids, int visitor_uid, int before, int cnt) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -512,15 +517,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getPlace(Connection sql, int place_id, int visitor_uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getPlace(Connection sql, int place_id, int visitor_uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -541,15 +546,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getMyFeed(Connection sql, int uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(40);
+    public static List<Integer> getMyFeed(Connection sql, int uid, int before) {
+        List<Integer> mids = new ArrayList<>(40);
         PreparedStatement stmt = null;
         ResultSet rs = null;
         try {
@@ -569,7 +574,7 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -589,7 +594,7 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -603,8 +608,8 @@ public class MessagesQueries {
         return mids;
     }
 
-    public static ArrayList<Integer> getPrivate(Connection sql, int uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getPrivate(Connection sql, int uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -623,15 +628,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getDiscussions(Connection sql, int uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getDiscussions(Connection sql, int uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -650,7 +655,7 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -658,8 +663,8 @@ public class MessagesQueries {
         return mids;
     }
 
-    public static ArrayList<Integer> getRecommended(Connection sql, int uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getRecommended(Connection sql, int uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -678,7 +683,7 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -687,8 +692,8 @@ public class MessagesQueries {
         return mids;
     }
 
-    public static ArrayList<Integer> getPopular(Connection sql, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getPopular(Connection sql, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -705,15 +710,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getPhotos(Connection sql, int visitor_uid, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getPhotos(Connection sql, int visitor_uid, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -732,15 +737,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getSearch(Connection sql, Connection sqlSearch, String search, int before) {
-        ArrayList<Integer> mids0 = new ArrayList<Integer>(20);
+    public static List<Integer> getSearch(Connection sql, Connection sqlSearch, String search, int before) {
+        List<Integer> mids0 = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -760,12 +765,12 @@ public class MessagesQueries {
                 mids0.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
 
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+        List<Integer> mids = new ArrayList<>(20);
         if (mids0.size() > 0) {
             try {
                 stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id IN (" + Utils.convertArrayInt2String(mids0) + ") AND privacy>0 ORDER BY message_id DESC LIMIT 20");
@@ -775,7 +780,7 @@ public class MessagesQueries {
                     mids.add(rs.getInt(1));
                 }
             } catch (SQLException e) {
-                System.err.println(e);
+                logger.log(Level.SEVERE, "sql exception", e);
             } finally {
                 Utils.finishSQL(rs, stmt);
             }
@@ -784,8 +789,8 @@ public class MessagesQueries {
         return mids;
     }
 
-    public static ArrayList<Integer> getUserBlog(Connection sql, int UID, int privacy, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getUserBlog(Connection sql, int UID, int privacy, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -804,15 +809,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getUserTag(Connection sql, int UID, int TID, int privacy, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getUserTag(Connection sql, int UID, int TID, int privacy, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -833,15 +838,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getUserRecommendations(Connection sql, int UID, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getUserRecommendations(Connection sql, int UID, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -860,15 +865,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getUserPhotos(Connection sql, int UID, int privacy, int before) {
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+    public static List<Integer> getUserPhotos(Connection sql, int UID, int privacy, int before) {
+        List<Integer> mids = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -887,15 +892,15 @@ public class MessagesQueries {
                 mids.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
         return mids;
     }
 
-    public static ArrayList<Integer> getUserSearch(Connection sql, Connection sqlSearch, int UID, String search, int privacy, int before) {
-        ArrayList<Integer> mids0 = new ArrayList<Integer>(20);
+    public static List<Integer> getUserSearch(Connection sql, Connection sqlSearch, int UID, String search, int privacy, int before) {
+        List<Integer> mids0 = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -916,12 +921,12 @@ public class MessagesQueries {
                 mids0.add(rs.getInt(1));
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
 
-        ArrayList<Integer> mids = new ArrayList<Integer>(20);
+        List<Integer> mids = new ArrayList<>(20);
         if (mids0.size() > 0) {
             try {
                 stmt = sql.prepareStatement("SELECT message_id FROM messages WHERE message_id IN (" + Utils.convertArrayInt2String(mids0) + ") AND privacy>=" + privacy + " ORDER BY message_id DESC");
@@ -931,7 +936,7 @@ public class MessagesQueries {
                     mids.add(rs.getInt(1));
                 }
             } catch (SQLException e) {
-                System.err.println(e);
+                logger.log(Level.SEVERE, "sql exception", e);
             } finally {
                 Utils.finishSQL(rs, stmt);
             }
@@ -940,8 +945,8 @@ public class MessagesQueries {
         return mids;
     }
 
-    public static ArrayList<com.juick.Message> getMessages(Connection sql, ArrayList<Integer> mids) {
-        ArrayList<com.juick.Message> msgs = new ArrayList<com.juick.Message>(20);
+    public static List<com.juick.Message> getMessages(Connection sql, List<Integer> mids) {
+        List<com.juick.Message> msgs = new ArrayList<>(20);
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -978,7 +983,7 @@ public class MessagesQueries {
                 msgs.add(msg);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -986,8 +991,8 @@ public class MessagesQueries {
         return msgs;
     }
 
-    public static ArrayList<com.juick.Message> getReplies(Connection sql, int mid) {
-        ArrayList<com.juick.Message> replies = new ArrayList<com.juick.Message>();
+    public static List<com.juick.Message> getReplies(Connection sql, int mid) {
+        List<com.juick.Message> replies = new ArrayList<>();
 
         PreparedStatement stmt = null;
         ResultSet rs = null;
@@ -1013,7 +1018,7 @@ public class MessagesQueries {
                 replies.add(msg);
             }
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(rs, stmt);
         }
@@ -1039,7 +1044,7 @@ public class MessagesQueries {
             }
             ret = stmt.executeUpdate() > 0;
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(null, stmt);
         }
@@ -1050,7 +1055,7 @@ public class MessagesQueries {
                 stmt.setInt(1, mid);
                 stmt.executeUpdate();
             } catch (SQLException e) {
-                System.err.println(e);
+                logger.log(Level.SEVERE, "sql exception", e);
             } finally {
                 Utils.finishSQL(null, stmt);
             }
@@ -1068,7 +1073,7 @@ public class MessagesQueries {
             stmt.setInt(1, mid);
             ret = stmt.executeUpdate() > 0;
         } catch (SQLException e) {
-            System.err.println(e);
+            logger.log(Level.SEVERE, "sql exception", e);
         } finally {
             Utils.finishSQL(null, stmt);
         }
-- 
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