Improve YMLWrapper

CommonCore/Data/src/de/steamwar/data/YMLWrapper.java

@@ -83,9 +83,15 @@ public abstract class YMLWrapper<M, ST, W> {
         return materialMapper.apply(getString(path, defaultValue).toUpperCase());
     }
 
-    public abstract List<String> getStringList(String path);
+    public abstract <T> List<T> get(String path, Function<Object, List<T>> mapper);
 
-    public abstract List<Integer> getIntList(String path);
+    public List<String> getStringList(String path) {
+        return get(path, o -> (List<String>) o);
+    }
+
+    public List<Integer> getIntList(String path) {
+        return get(path, o -> (List<Integer>) o);
+    }
 
     public final List<ST> getSchematicTypeList(String path) {
         List<String> list = getStringList(path);

SpigotCore/SpigotCore_Main/src/de/steamwar/data/YMLWrapperImpl.java

@@ -111,24 +111,16 @@ public class YMLWrapperImpl<M, ST, W> extends YMLWrapper<M, ST, W> {
     }
 
     @Override
-    public List<String> getStringList(String path) {
+    public <T> List<T> get(String path, Function<Object, List<T>> mapper) {
         if (config == null) return Collections.emptyList();
-        List<String> list = config.getStringList(pathPrefix + path);
-        if (list.isEmpty()) {
+        List<?> list = config.getList(pathPrefix + path);
+        if (list == null || list.isEmpty()) {
             return Collections.emptyList();
-        } else {
-            return Collections.unmodifiableList(list);
         }
-    }
-
-    @Override
-    public List<Integer> getIntList(String path) {
-        if (config == null) return Collections.emptyList();
-        List<Integer> list = config.getIntegerList(pathPrefix + path);
-        if (list.isEmpty()) {
+        try {
+            return Collections.unmodifiableList(mapper.apply(list));
+        } catch (ClassCastException e) {
             return Collections.emptyList();
-        } else {
-            return Collections.unmodifiableList(list);
         }
     }
 

VelocityCore/src/de/steamwar/data/YMLWrapperImpl.java

@@ -99,21 +99,12 @@ public class YMLWrapperImpl<ST> extends YMLWrapper<String, ST, String> {
     }
 
     @Override
-    public List<String> getStringList(String path) {
+    public <T> List<T> get(String path, Function<Object, List<T>> mapper) {
         Object value = this.document.get(path);
-        if (value instanceof List) {
-            return Collections.unmodifiableList((List<String>) value);
-        } else {
-            return Collections.emptyList();
-        }
-    }
-
-    @Override
-    public List<Integer> getIntList(String path) {
-        Object value = this.document.get(path);
-        if (value instanceof List) {
-            return Collections.unmodifiableList((List<Integer>) value);
-        } else {
+        if (value == null) return Collections.emptyList();
+        try {
+            return Collections.unmodifiableList(mapper.apply(value));
+        } catch (ClassCastException e) {
             return Collections.emptyList();
         }
     }