Version bump & make some changes to the way table locking is used in MySQL.

SaneEconomyCore/pom.xml

@@ -9,7 +9,7 @@
         <version>0</version>
     </parent>
     <artifactId>SaneEconomyCore</artifactId>
-    <version>0.17.1-SNAPSHOT</version>
+    <version>0.17.2-SNAPSHOT</version>
 
     <dependencies>
         <dependency>

SaneEconomyCore/src/main/java/org/appledash/saneeconomy/economy/backend/type/EconomyStorageBackendMySQL.java

@@ -121,13 +121,13 @@ public class EconomyStorageBackendMySQL extends EconomyStorageBackendCaching {
         this.dbConn.executeAsyncOperation("set_balance_" + economable.getUniqueIdentifier(), (conn) -> {
             try {
                 this.ensureAccountExists(economable, conn);
-                conn.prepareStatement("LOCK TABLE " + this.dbConn.getTable(SANEECONOMY_BALANCES) + " WRITE").execute();
+                this.dbConn.lockTable(conn, SANEECONOMY_BALANCES);
                 PreparedStatement statement = this.dbConn.prepareStatement(conn, String.format("UPDATE `%s` SET balance = ?, last_name = ? WHERE `unique_identifier` = ?", this.dbConn.getTable(SANEECONOMY_BALANCES)));
                 statement.setString(1, newBalance.toString());
                 statement.setString(2, economable.getName());
                 statement.setString(3, economable.getUniqueIdentifier());
                 statement.executeUpdate();
-                conn.prepareStatement("UNLOCK TABLES").execute();
+                this.dbConn.unlockTables(conn);
             } catch (Exception e) {
                 this.balances.put(economable.getUniqueIdentifier(), oldBalance);
                 throw new RuntimeException("SQL error has occurred.", e);

SaneEconomyCore/src/main/java/org/appledash/saneeconomy/utils/database/MySQLConnection.java

@@ -18,10 +18,17 @@ public class MySQLConnection {
     public static final int FIVE_SECONDS = 5000;
     private final DatabaseCredentials dbCredentials;
     private final SaneDatabase saneDatabase;
+    private boolean canLockTables = true;
 
     public MySQLConnection(DatabaseCredentials dbCredentials) {
         this.dbCredentials = dbCredentials;
         this.saneDatabase = new SaneDatabase(dbCredentials);
+
+        try (Connection conn = this.saneDatabase.getConnection()){
+
+        } catch (SQLException e) {
+            this.canLockTables = false;
+        }
     }
 
     public Connection openConnection() {
@@ -49,6 +56,27 @@ public class MySQLConnection {
         }
     }
 
+    public void lockTable(Connection conn, String tableName) throws SQLException {
+        if (!this.canLockTables) {
+            return;
+        }
+
+        try {
+            conn.prepareStatement("LOCK TABLE " + this.getTable(tableName) + " WRITE").execute();
+            this.canLockTables = true;
+        } catch (SQLException e) {
+            this.canLockTables = false;
+        }
+    }
+
+    public void unlockTables(Connection conn) throws SQLException {
+        if (!this.canLockTables) {
+            return;
+        }
+
+        conn.prepareStatement("UNLOCK TABLES").execute();
+    }
+
     public void executeAsyncOperation(String tag, Consumer<Connection> callback) {
         this.saneDatabase.runDatabaseOperationAsync(tag, () -> this.doExecuteAsyncOperation(1, callback));
     }

SaneEconomyCore/src/main/resources/messages.yml

@@ -7,6 +7,9 @@
 # The order of placeholders can be changed. Anything after the :, like the '02d' in {1:02d} is a Java String.format specifier. If you don't know what that is, I recommend leaving it as-is.
 # IMPORTANT: If your translation has a colon ( : ) character inside of it, you must enclose the entire part after "translation: " in single quotes ( ' ).
 # If this file doesn't work for some reason, check your console for errors with "SnakeYAML" included in them.
+####################################################################################################
+########## READ ABOVE IF YOU INTEND TO EDIT THIS FILE, BEFORE ASKING FOR HELP! #####################
+####################################################################################################
 messages:
   - message: "You don't have permission to check the balance of {1}."
   - message: "That player is not online."

SaneEconomyMobKills/pom.xml

@@ -16,7 +16,7 @@
         <dependency>
             <groupId>org.appledash</groupId>
             <artifactId>SaneEconomyCore</artifactId>
-            <version>0.17.1-SNAPSHOT</version>
+            <version>0.17.2-SNAPSHOT</version>
         </dependency>
     </dependencies>
 

SaneEconomyOnlineTime/pom.xml

@@ -17,7 +17,7 @@
         <dependency>
             <groupId>org.appledash</groupId>
             <artifactId>SaneEconomyCore</artifactId>
-            <version>0.17.1-SNAPSHOT</version>
+            <version>0.17.2-SNAPSHOT</version>
         </dependency>
     </dependencies>
 

SaneEconomySignShop/pom.xml

@@ -16,7 +16,7 @@
         <dependency>
             <groupId>org.appledash</groupId>
             <artifactId>SaneEconomyCore</artifactId>
-            <version>0.17.1-SNAPSHOT</version>
+            <version>0.17.2-SNAPSHOT</version>
         </dependency>
     </dependencies>