Fixing regex matching rules

Author: PicoCreator

src/main/java/picoded/dstack/mongodb/MongoDB_DataObjectMap.java

@@ -365,9 +365,9 @@ static protected Bson queryObjToBsonFilter(Query inQuery) {
 				String val = GenericConvert.toString(inQuery.defaultArgumentValue());
 
 				// val = val.replaceAll("*", "*");
-				val = val.replaceAll("\\*", "*");
+				val = val.replaceAll("\\*", "\\*");
 				val = val.replaceAll("\\%", ".*");
-				val = val.replaceAll("\\_", "[.]");
+				val = val.replaceAll("\\_", ".");
 
 				return Filters.regex(inQuery.fieldName(), "^"+val+"$");
 			}