diff --git a/src/main/java/ru/simsonic/rscPermissions/InternalCache/InternalCache.java b/src/main/java/ru/simsonic/rscPermissions/InternalCache/InternalCache.java
index 7c51075..6e1dc92 100644
--- a/src/main/java/ru/simsonic/rscPermissions/InternalCache/InternalCache.java
+++ b/src/main/java/ru/simsonic/rscPermissions/InternalCache/InternalCache.java
@@ -12,21 +12,18 @@ import ru.simsonic.rscPermissions.Backends.DatabaseContents;
 
 public class InternalCache
 {
-	public InternalCache()
-	{
-	}
-	protected final RowInheritance defaultInheritance = new RowInheritance();
+	private final HashMap<String, RowEntity> entities_g = new HashMap<>();
+	private final HashMap<String, RowEntity> entities_u = new HashMap<>();
+	private final ArrayList<RowPermission>   permissions_p2g = new ArrayList<>();
+	private final ArrayList<RowPermission>   permissions_p2u = new ArrayList<>();
+	private final ArrayList<RowInheritance>  inheritance_g2g = new ArrayList<>();
+	private final ArrayList<RowInheritance>  inheritance_g2u = new ArrayList<>();
+	private final RowInheritance defaultInheritance = new RowInheritance();
 	public void setDefaultGroup(String defaultGroup)
 	{
 		defaultInheritance.parent = defaultGroup;
 		defaultInheritance.deriveInstance();
 	}
-	protected final HashMap<String, RowEntity> entities_g = new HashMap<>();
-	protected final HashMap<String, RowEntity> entities_u = new HashMap<>();
-	protected final ArrayList<RowPermission> permissions_p2g = new ArrayList<>();
-	protected final ArrayList<RowPermission> permissions_p2u = new ArrayList<>();
-	protected final ArrayList<RowInheritance> inheritance_g2g = new ArrayList<>();
-	protected final ArrayList<RowInheritance> inheritance_g2u = new ArrayList<>();
 	public static class InheritanceLeaf implements Comparable<InheritanceLeaf>
 	{
 		public RowInheritance node;
@@ -180,51 +177,44 @@ public class InternalCache
 		importEntities(contents.entities);
 		importPermissions(contents.permissions);
 		importInheritance(contents.inheritance);
+		buildEntityTree();
 	}
-	private int importEntities(RowEntity[] rows)
+	private void importEntities(RowEntity[] rows)
 	{
 		entities_g.clear();
 		entities_u.clear();
-		if(rows == null)
-			return 0;
-		for(RowEntity row : rows)
-		{
-			if(row.entityType == EntityType.group)
-				entities_g.put(row.entity.toLowerCase(), row);
-			else
-				entities_u.put(row.entity.toLowerCase(), row);
-		}
-		return entities_g.size() + entities_u.size();
+		if(rows != null)
+			for(RowEntity row : rows)
+			{
+				if(row.entityType == EntityType.group)
+					entities_g.put(row.entity.toLowerCase(), row);
+				else
+					entities_u.put(row.entity.toLowerCase(), row);
+			}
 	}
-	private int importPermissions(RowPermission[] rows)
+	private void importPermissions(RowPermission[] rows)
 	{
 		permissions_p2g.clear();
 		permissions_p2u.clear();
-		if(rows == null)
-			return 0;
-		for(RowPermission row : rows)
-		{
-			if(row.entityType == EntityType.group)
-				permissions_p2g.add(row);
-			else
-				permissions_p2u.add(row);
-		}
-		return permissions_p2g.size() + permissions_p2u.size();
+		if(rows != null)
+			for(RowPermission row : rows)
+			{
+				if(row.entityType == EntityType.group)
+					permissions_p2g.add(row);
+				else
+					permissions_p2u.add(row);
+			}
 	}
-	private int importInheritance(RowInheritance[] rows)
+	private void importInheritance(RowInheritance[] rows)
 	{
 		inheritance_g2g.clear();
 		inheritance_g2u.clear();
-		if(rows == null)
-			return 0;
-		for(RowInheritance row : rows)
-		{
-			if(row.childType == EntityType.group)
-				inheritance_g2g.add(row);
-			else
-				inheritance_g2u.add(row);
-		}
-		return inheritance_g2g.size() + inheritance_g2u.size();
+		if(rows != null)
+			for(RowInheritance row : rows)
+				if(row.childType == EntityType.group)
+					inheritance_g2g.add(row);
+				else
+					inheritance_g2u.add(row);
 	}
 	public synchronized void clear()
 	{