Improve addon reload method.

Now it will call also manager.reload() that clears cache and resets database links.
Improve ReloadCommand. Now it will be able to reload both ways (soft way that clears only cache, and hard way that reassigns database connection) with reload command.

src/main/java/world/bentobox/challenges/ChallengesAddon.java

@@ -225,10 +225,12 @@ public void onEnable() {
     @Override
     public void onReload()
     {
-        if (this.hooked) {
-            this.challengesManager.save();
+        super.onReload();
 
+        if (this.hooked)
+        {
             this.loadSettings();
+            this.challengesManager.reload();
             this.getLogger().info("Challenges addon reloaded.");
         }
     }

src/main/java/world/bentobox/challenges/ChallengesManager.java

@@ -127,6 +127,13 @@ public void load()
     {
         this.challengeCacheData.clear();
         this.levelCacheData.clear();
+
+        if (!this.playerCacheData.isEmpty())
+        {
+            // store player data before cleaning.
+            this.savePlayersData();
+        }
+
         this.playerCacheData.clear();
 
         this.addon.getLogger().info("Loading challenges...");
@@ -143,6 +150,12 @@ public void load()
      */
     public void reload()
     {
+        if (!this.playerCacheData.isEmpty())
+        {
+            // store player data before cleaning.
+            this.savePlayersData();
+        }
+
         this.addon.getLogger().info("Reloading challenges...");
 
         this.challengeDatabase = new Database<>(addon, Challenge.class);

src/main/java/world/bentobox/challenges/commands/admin/ReloadChallenges.java

@@ -8,36 +8,65 @@
 import world.bentobox.bentobox.api.commands.CompositeCommand;
 import world.bentobox.bentobox.api.user.User;
 
-public class ReloadChallenges extends CompositeCommand {
-
-    private ChallengesManager manager;
 
+/**
+ * This class allows to reload challenges addon.
+ */
+public class ReloadChallenges extends CompositeCommand
+{
     /**
-     * Admin command to complete user challenges
+     * Admin command to reloads challenges addon.
      * @param parent
      */
-    public ReloadChallenges(Addon addon, CompositeCommand parent) {
+    public ReloadChallenges(Addon addon, CompositeCommand parent)
+    {
         super(addon, parent, "reload");
+        this.manager = ((ChallengesAddon) getAddon()).getChallengesManager();
     }
 
+
+    /**
+     * {@inheritDoc}
+     */
     @Override
-    public void setup() {
+    public void setup()
+    {
         this.setPermission("admin.challenges");
         this.setParametersHelp("challenges.commands.admin.reload.parameters");
         this.setDescription("challenges.commands.admin.reload.description");
-        manager = ((ChallengesAddon)getAddon()).getChallengesManager();
     }
 
+
+    /**
+     * {@inheritDoc}
+     */
     @Override
-    public boolean execute(User user, String label, List<String> args) {
-        if (!args.isEmpty()) {
-            // Show help
-            showHelp(this, user);
+    public boolean execute(User user, String label, List<String> args)
+    {
+        if (args.isEmpty())
+        {
+            this.manager.load();
+            user.sendMessage("general.success");
+            return true;
+        }
+        else if (args.get(0).equalsIgnoreCase("hard"))
+        {
+            this.manager.reload();
+            user.sendMessage("general.success");
+            return true;
+        }
+        else
+        {
+            this.showHelp(this, user);
             return false;
         }
-        manager.load();
-        user.sendMessage("general.success");
-        return true;
     }
 
+
+    // ---------------------------------------------------------------------
+    // Section: Variables
+    // ---------------------------------------------------------------------
+
+
+    private ChallengesManager manager;
 }