JoinList#join - zwraca this

src/main/java/net/ranides/assira/collection/list/JoinList.java

@@ -10,13 +10,13 @@ import java.util.*;
 
 /**
  * Klasa reprezentująca złączenie wielu list jako jedną kolekcję.
- * @param <T> 
+ * @param <T>
  * @author ranides
  */
 public class JoinList<T> extends AbstractSequentialList<T> {
-    
+
     private final List<List<T>> content;
-    
+
     /**
      * Tworzy nowe złączenie, do którego można doklejać nowe listy za pomocą
      * metody {@link #join(List) join(List)}
@@ -24,7 +24,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
     public JoinList() {
         content = new LinkedList<List<T>>();
     }
-    
+
     /**
      * Tworzy nowe złączenie na podstawie podanej listy list.
      * @param values
@@ -63,7 +63,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
         }
         throw new IndexOutOfBoundsException("Index: " + index + " Size: " + end );
     }
-    
+
     @Override
     public Iterator<T> iterator() {
         return new JoinIterator();
@@ -78,31 +78,32 @@ public class JoinList<T> extends AbstractSequentialList<T> {
     public ListIterator<T> listIterator(int index) {
         return new JoinIterator(index);
     }
-    
+
     /**
      * Dodaje do złączenia listę.
      * @param list
      */
-    public void join(List<T> list) {
+    public JoinList<T> join(List<T> list) {
         content.add(list);
+        return this;
     }
-    
+
     private final class JoinIterator implements ListIterator<T> {
-        
+
         private int segment = 0;
         private ListIterator<T> iterator;
-        
+
         private int index = 0;
         private boolean hasNext = false;
         private boolean hasPrev = false;
         private T next;
         private T prev;
-        
+
         public JoinIterator(int index) {
             this();
             while(index > 0) { next(); }
         }
-        
+
         public JoinIterator() {
             segment = 0;
             iterator = content.get(segment).listIterator();
@@ -113,14 +114,14 @@ public class JoinList<T> extends AbstractSequentialList<T> {
             if( hasNext ) {
                 return true;
             }
-            
+
             if( iterator!=null && iterator.hasNext() ) {
                 next = iterator.next();
                 hasNext = true;
                 hasPrev = false;
                 return true;
             }
-            
+
             while( segment+1 < content.size() ) {
                 hasPrev = false;
                 iterator = content.get( ++segment ).listIterator();
@@ -130,7 +131,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
                     return true;
                 }
             }
-            
+
             hasNext = false;
             return false;
         }
@@ -141,7 +142,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
                 hasNext = false;
                 index++;
                 return next;
-            } 
+            }
             throw new NoSuchElementException();
         }
 
@@ -150,14 +151,14 @@ public class JoinList<T> extends AbstractSequentialList<T> {
             if( hasPrev ) {
                 return true;
             }
-            
+
             if( iterator!=null && iterator.hasPrevious() ) {
                 prev = iterator.previous();
                 hasPrev = true;
                 hasNext = false;
                 return true;
             }
-            
+
             while( segment > 0 ) {
                 hasNext = false;
                 List<T> list = content.get(--segment);
@@ -168,7 +169,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
                     return true;
                 }
             }
-            
+
             hasPrev = false;
             return false;
         }
@@ -179,7 +180,7 @@ public class JoinList<T> extends AbstractSequentialList<T> {
                 hasPrev = false;
                 index--;
                 return prev;
-            } 
+            }
             throw new NoSuchElementException();
         }
 
@@ -207,6 +208,6 @@ public class JoinList<T> extends AbstractSequentialList<T> {
         public void add(T value) {
             throw new UnsupportedOperationException("Immutable list.");
         }
-        
+
     }
 }