Expand on ConfigurationSerializable methods in ConfigurationSection

By: Senmori <thesenmori@gmail.com>

paper-api/src/main/java/org/bukkit/attribute/AttributeModifier.java

@@ -71,7 +71,7 @@ public class AttributeModifier implements ConfigurationSerializable {
     @Override
     public Map<String, Object> serialize() {
         Map<String, Object> data = new HashMap<String, Object>();
-        data.put("uuid", uuid);
+        data.put("uuid", uuid.toString());
         data.put("name", name);
         data.put("operation", operation.ordinal());
         data.put("amount", amount);
@@ -79,7 +79,7 @@ public class AttributeModifier implements ConfigurationSerializable {
     }
 
     public static AttributeModifier deserialize(Map<String, Object> args) {
-        return new AttributeModifier((UUID) args.get("uuid"), (String) args.get("name"), NumberConversions.toDouble(args.get("amount")), Operation.values()[NumberConversions.toInt(args.get("operation"))]);
+        return new AttributeModifier(UUID.fromString((String) args.get("uuid")), (String) args.get("name"), NumberConversions.toDouble(args.get("amount")), Operation.values()[NumberConversions.toInt(args.get("operation"))]);
     }
 
     /**

paper-api/src/main/java/org/bukkit/configuration/ConfigurationSection.java

@@ -6,6 +6,7 @@ import java.util.List;
 
 import org.bukkit.Color;
 import org.bukkit.OfflinePlayer;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
 import org.bukkit.util.Vector;
 import org.bukkit.inventory.ItemStack;
 
@@ -606,6 +607,38 @@ public interface ConfigurationSection {
     public List<Map<?, ?>> getMapList(String path);
 
     // Bukkit
+    /**
+     * Gets the requested {@link ConfigurationSerializable} object at the given
+     * path.
+     *
+     * If the Object does not exist but a default value has been specified, this
+     * will return the default value. If the Object does not exist and no
+     * default value was specified, this will return null.
+     *
+     * @param <T> the type of {@link ConfigurationSerializable}
+     * @param path the path to the object.
+     * @param clazz the type of {@link ConfigurationSerializable}
+     * @return Requested {@link ConfigurationSerializable} object
+     */
+    public <T extends ConfigurationSerializable> T getSerializable(String path, Class<T> clazz);
+
+    /**
+     * Gets the requested {@link ConfigurationSerializable} object at the given
+     * path, returning a default value if not found
+     *
+     * If the Object does not exist then the specified default value will
+     * returned regardless of if a default has been identified in the root
+     * {@link Configuration}.
+     *
+     * @param <T> the type of {@link ConfigurationSerializable}
+     * @param path the path to the object.
+     * @param clazz the type of {@link ConfigurationSerializable}
+     * @param def the default object to return if the object is not present at
+     * the path
+     * @return Requested {@link ConfigurationSerializable} object
+     */
+    public <T extends ConfigurationSerializable> T getSerializable(String path, Class<T> clazz, T def);
+
     /**
      * Gets the requested Vector by path.
      * <p>

paper-api/src/main/java/org/bukkit/configuration/MemorySection.java

@@ -12,6 +12,7 @@ import java.util.Set;
 import org.apache.commons.lang.Validate;
 import org.bukkit.Color;
 import org.bukkit.OfflinePlayer;
+import org.bukkit.configuration.serialization.ConfigurationSerializable;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.util.Vector;
 
@@ -623,64 +624,66 @@ public class MemorySection implements ConfigurationSection {
     }
 
     // Bukkit
-    public Vector getVector(String path) {
+    @Override
+    public <T extends ConfigurationSerializable> T getSerializable(String path, Class<T> clazz) {
+        Validate.notNull(clazz, "ConfigurationSerializable class cannot be null");
         Object def = getDefault(path);
-        return getVector(path, (def instanceof Vector) ? (Vector) def : null);
+        return getSerializable(path, clazz, (def != null && clazz.isInstance(def)) ? clazz.cast(def) : null);
+    }
+
+    @Override
+    public <T extends ConfigurationSerializable> T getSerializable(String path, Class<T> clazz, T def) {
+        Validate.notNull(clazz, "ConfigurationSerializable class cannot be null");
+        Object val = get(path);
+        return (val != null && clazz.isInstance(val)) ? clazz.cast(val) : def;
+    }
+
+    public Vector getVector(String path) {
+        return getSerializable(path, Vector.class);
     }
 
     public Vector getVector(String path, Vector def) {
-        Object val = get(path, def);
-        return (val instanceof Vector) ? (Vector) val : def;
+        return getSerializable(path, Vector.class, def);
     }
 
     public boolean isVector(String path) {
-        Object val = get(path);
-        return val instanceof Vector;
+        return getSerializable(path, Vector.class) != null;
     }
 
     public OfflinePlayer getOfflinePlayer(String path) {
-        Object def = getDefault(path);
-        return getOfflinePlayer(path, (def instanceof OfflinePlayer) ? (OfflinePlayer) def : null);
+        return getSerializable(path, OfflinePlayer.class);
     }
 
     public OfflinePlayer getOfflinePlayer(String path, OfflinePlayer def) {
-        Object val = get(path, def);
-        return (val instanceof OfflinePlayer) ? (OfflinePlayer) val : def;
+        return getSerializable(path, OfflinePlayer.class, def);
     }
 
     public boolean isOfflinePlayer(String path) {
-        Object val = get(path);
-        return val instanceof OfflinePlayer;
+        return getSerializable(path, OfflinePlayer.class) != null;
     }
 
     public ItemStack getItemStack(String path) {
-        Object def = getDefault(path);
-        return getItemStack(path, (def instanceof ItemStack) ? (ItemStack) def : null);
+        return getSerializable(path, ItemStack.class);
     }
 
     public ItemStack getItemStack(String path, ItemStack def) {
-        Object val = get(path, def);
-        return (val instanceof ItemStack) ? (ItemStack) val : def;
+        return getSerializable(path, ItemStack.class, def);
     }
 
     public boolean isItemStack(String path) {
-        Object val = get(path);
-        return val instanceof ItemStack;
+        return getSerializable(path, ItemStack.class) != null;
     }
 
     public Color getColor(String path) {
-        Object def = getDefault(path);
-        return getColor(path, (def instanceof Color) ? (Color) def : null);
+        return getSerializable(path, Color.class);
     }
 
     public Color getColor(String path, Color def) {
-        Object val = get(path, def);
-        return (val instanceof Color) ? (Color) val : def;
+        return getSerializable(path, Color.class, def);
     }
 
     public boolean isColor(String path) {
-        Object val = get(path);
-        return val instanceof Color;
+        return getSerializable(path, Color.class) != null;
     }
 
     public ConfigurationSection getConfigurationSection(String path) {