brigning down group tpes

buisnesslogic/src/main/java/com/plannaplan/types/GroupType.java

@@ -1,23 +1,39 @@
 package com.plannaplan.types;
 
 /**
- *  GroupType contains types: LECTURE, CLASS, LAB, SEMINAR, CONSERVATORY, PRATICE
+ * GroupType contains types: LECTURE, CLASS, LAB, SEMINAR, CONSERVATORY, PRATICE
  */
 
 public enum GroupType {
-    LECTURE("Wykład"), CLASS("Ćwiczenia"), LAB("Laboratorium"), SEMINAR("Seminarium"),CONSERVATORY("Konwersatorium"), PRATICE("Praktyka");
+    LECTURE("Wykład"), CLASS("Ćwiczenia"), LAB("Laboratorium"), SEMINAR("Seminarium"), CONSERVATORY("Konwersatorium"),
+    PRATICE("Praktyka");
 
     public final String type;
+
     private GroupType(String type) {
         this.type = type;
     }
 
+    /**
+     * @param type as string
+     * @return Enum converted from provided string
+     */
     public final static GroupType getType(String type) {
         for (GroupType d : values()) {
             if (d.type.equals(type)) {
                 return d;
             }
         }
-        return null;        
+        return null;
+    }
+
+    /**
+     * @param type group type to check
+     * @return general convertion to bring down tours to two generals LECTURE and
+     *         CLASS. To class are included: CLASS, LAB, SEMINAR, CONSERVATORY,
+     *         PRATICE.
+     */
+    public final static GroupType isLectureOrClass(GroupType type) {
+        return type == GroupType.LECTURE ? GroupType.LECTURE : GroupType.CLASS;
     }
 }