Refactor to allow items to be added after first load

nms/FlattenedProvider/src/net/ess3/nms/flattened/FlatItemDbProvider.java

@@ -98,8 +98,13 @@ public class FlatItemDbProvider extends ItemDbProvider {
         return null;
     }
 
+    private void resetDb() {
+        primaryNames.clear();
+        names.clear();
+    }
+
     @Override
-    public void rebuild(List<String> lines) {
+    public void addFrom(List<String> lines) {
         String json = lines.stream()
                 .filter(line -> !line.startsWith("#"))
                 .collect(Collectors.joining("\n"));
@@ -124,6 +129,12 @@ public class FlatItemDbProvider extends ItemDbProvider {
         }
     }
 
+    @Override
+    public void rebuild(List<String> lines) {
+        resetDb();
+        addFrom(lines);
+    }
+
     private void addAlias(String primaryName, String alias) {
         List<String> aliasList;
 

nms/IdProvider/src/net/ess3/nms/ids/LegacyItemDbProvider.java

@@ -174,13 +174,15 @@ public class LegacyItemDbProvider extends ItemDbProvider {
         return nameList;
     }
 
-    @Override
+    private void resetDb() {
-    public void rebuild(List<String> lines) {
         durabilities.clear();
         items.clear();
         names.clear();
         primaryNames.clear();
+    }
 
+    @Override
+    public void addFrom(List<String> lines) {
         lines.stream()
                 .filter(line -> line.length() > 0 && !(line.charAt(0) == '#'))
                 .map(this::parseLine)
@@ -192,6 +194,12 @@ public class LegacyItemDbProvider extends ItemDbProvider {
         }
     }
 
+    @Override
+    public void rebuild(List<String> lines) {
+        resetDb();
+        addFrom(lines);
+    }
+
     private ItemData parseLine(String line) {
         String itemName = null;
         int numeric = -1;

nms/NMSProvider/src/net/ess3/nms/ItemDbProvider.java

@@ -20,9 +20,16 @@ public abstract class ItemDbProvider implements Provider {
     private PotionMetaProvider potionMetaProvider;
 
     /**
-     * Rebuild the item database, using the given lines of a file.
+     * Populate the item database using the given lines of data.
      *
-     * @param lines The lines of the file from which the database should be built.
+     * @param lines The lines of data from which the database should be populated
+     */
+    public abstract void addFrom(List<String> lines);
+
+    /**
+     * Reset the database and rebuild it from the given lines of data.
+     *
+     * @param lines The lines of the file from which the database should be built
      */
     public abstract void rebuild(List<String> lines);