Examples of java.util.List.retainAll()

java.util.List.retainAll()
Retains only the elements in this list that are contained in the specified collection (optional operation). In other words, removes from this list all the elements that are not contained in the specified collection. @param c collection containing elements to be retained in this list @return true if this list changed as a result of the call @throws UnsupportedOperationException if the retainAll operationis not supported by this list @throws ClassCastException if the class of an element of this listis incompatible with the specified collection (optional) @throws NullPointerException if this list contains a null element and thespecified collection does not permit null elements (optional), or if the specified collection is null @see #remove(Object) @see #contains(Object)

        public boolean retainAll(Collection o) {
            if (fast) {
                synchronized (FastArrayList.this) {
                    ArrayList temp = (ArrayList) list.clone();
                    List sub = get(temp);
                    boolean r = sub.retainAll(o);
                    if (r) last = first + sub.size();
                    list = temp;
                    expected = temp;
                    return r;
                }

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  }


  public boolean retainAll(Collection c) {
    checkRealm();
    List list = new ArrayList(wrappedList);
    boolean changed = list.retainAll(c);
    if (changed) {
      ListDiff diff = Diffs.computeListDiff(wrappedList, list);
      wrappedList = list;
      updateTargetList(diff);
      fireListChange(diff);

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        //first find all the matching method names
        List nodes = getMatches(mapping, "./method[@name='" + method.getName() + "']");
        //remove the ones that aren't in our acceptable set, if one is specified
        if(availableNodes != null)
        {
            nodes.retainAll(availableNodes);
        }
        //no name found, so no matches
        if(nodes.size() == 0) return null;
        //if the method has no params, then more than one mapping is pointless
        Class[] parameterTypes = method.getParameterTypes();

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        public boolean retainAll(Collection o) {
            if (fast) {
                synchronized (FastArrayList.this) {
                    ArrayList temp = (ArrayList) list.clone();
                    List sub = get(temp);
                    boolean r = sub.retainAll(o);
                    if (r) last = first + sub.size();
                    list = temp;
                    expected = temp;
                    return r;
                }

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      while (iit.hasNext())
      {
        rList.remove(iit.next());
      }
    }
    rList.retainAll(a.getDeletePropositions());
    if (!rList.isEmpty()) return false;
    SchedulabilityChecker c = (VelosoSchedulabilityChecker) checker.clone(); //This should have to be cloned here and below
    boolean result = c.addAction((InstantAction)a, this);
    if (result && a instanceof StartInstantAction)
    {

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      {
         lock.readLock().acquire();
         try
         {
            List state = getCurrentState(true);
            return state.retainAll(c);
         }
         finally
         {
            lock.readLock().release();
         }

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        public boolean retainAll(Collection o) {
            if (fast) {
                synchronized (FastArrayList.this) {
                    ArrayList temp = (ArrayList) list.clone();
                    List sub = get(temp);
                    boolean r = sub.retainAll(o);
                    if (r) {
                        last = first + sub.size();
                    }
                    list = temp;
                    expected = temp;

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                getLeftResultSet().getAllResultColumns(null);
        ResultColumnList rightRCL =
                getRightResultSet().getAllResultColumns(null);


        List columnNames = extractColumnNames(leftRCL);
        columnNames.retainAll(extractColumnNames(rightRCL));


        ResultColumnList commonColumns =
                (ResultColumnList) getNodeFactory().getNode(
                        C_NodeTypes.RESULT_COLUMN_LIST,
                        getContextManager());

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/*     */     {
/* 643 */       this.lock.readLock().acquire();
/*     */       try
/*     */       {
/* 646 */         List state = getCurrentState(true);
/* 647 */         boolean bool = state.retainAll(c);
/*     */         return bool; } finally { this.lock.readLock().release(); }
/*     */     }
/*     */     catch (Exception ex)
/*     */     {
/*     */     }

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/*      */     {
/*  873 */       if (FastArrayList.this.fast) {
/*  874 */         synchronized (FastArrayList.this) {
/*  875 */           ArrayList temp = (ArrayList)FastArrayList.this.list.clone();
/*  876 */           List sub = get(temp);
/*  877 */           boolean r = sub.retainAll(o);
/*  878 */           if (r) this.last = (this.first + sub.size());
/*  879 */           FastArrayList.this.list = temp;
/*  880 */           this.expected = temp;
/*  881 */           return r;
/*      */         }

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