Examples of org.apache.commons.collections.iterators.IteratorChain

Package org.apache.commons.collections.iterators

Examples of org.apache.commons.collections.iterators.IteratorChain

org.apache.commons.collections.iterators.IteratorChain
An IteratorChain is an Iterator that wraps a number of Iterators.
This class makes multiple iterators look like one to the caller When any method from the Iterator interface is called, the IteratorChain will delegate to a single underlying Iterator. The IteratorChain will invoke the Iterators in sequence until all Iterators are exhausted.
Under many circumstances, linking Iterators together in this manner is more efficient (and convenient) than reading out the contents of each Iterator into a List and creating a new Iterator.
Calling a method that adds new Iteratorafter a method in the Iterator interface has been called will result in an UnsupportedOperationException. Subclasses should take care to not alter the underlying List of Iterators.
NOTE: As from version 3.0, the IteratorChain may contain no iterators. In this case the class will function as an empty iterator. @since Commons Collections 2.1 @version $Revision: 647116 $ $Date: 2008-04-11 12:23:08 +0100 (Fri, 11 Apr 2008) $ @author Morgan Delagrange @author Stephen Colebourne

        
        columnIterators.add(new ArrayIterator(grid[x]));
        
      }
      
      return new IteratorChain(columnIterators);
      
    }
    
  }

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        private boolean removeCleanInternal(StateManagerImpl sm) {
            return _clean != null && _clean.remove(sm);
        }


        public Iterator iterator() {
            IteratorChain chain = new IteratorChain();
            if (_dirty != null && !_dirty.isEmpty())
                chain.addIterator(_dirty.iterator());
            if (_clean != null && !_clean.isEmpty())
                chain.addIterator(_clean.iterator());
            return chain;
        }

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        private boolean removeCleanInternal(StateManagerImpl sm) {
            return _clean != null && _clean.remove(sm);
        }


        public Iterator iterator() {
            IteratorChain chain = new IteratorChain();
            if (_dirty != null && !_dirty.isEmpty())
                chain.addIterator(_dirty.iterator());
            if (_clean != null && !_clean.isEmpty())
                chain.addIterator(_clean.iterator());
            return chain;
        }

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            case PrincipalManager.SEARCH_TYPE_ALL:
                PrincipalIterator[] its = new PrincipalIterator[] {
                        findUserPrincipals(simpleFilter),
                        findGroupPrincipals(simpleFilter)
                };
                return new PrincipalIteratorAdapter(new IteratorChain(its));
            default:
                throw new IllegalArgumentException("Invalid searchType");
        }
    }

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                }
            }
        }


        private Iterator<AccessControlEntry> iterator() {
            return new IteratorChain(userAces.iterator(), groupAces.iterator());
        }

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        private boolean removeCleanInternal(StateManagerImpl sm) {
            return _clean != null && _clean.remove(sm);
        }


        public Iterator iterator() {
            IteratorChain chain = new IteratorChain();
            if (_dirty != null && !_dirty.isEmpty())
                chain.addIterator(_dirty.iterator());
            if (_clean != null && !_clean.isEmpty())
                chain.addIterator(_clean.iterator());
            return chain;
        }

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                  {
                     LOG.trace("An exception occurred: " + e.getMessage());
                  }
               }
            }
            selfAndChildren = new IteratorChain(allIterators);
         }
      }

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            planningEntitySelector.phaseEnded(greedyFitSolverPhaseScope);
        }
    }


    public Iterator<Object> iterator() {
        IteratorChain iteratorChain = new IteratorChain();
        for (PlanningEntitySelector planningEntitySelector : planningEntitySelectorList) {
            iteratorChain.addIterator(planningEntitySelector.iterator());
        }
        return iteratorChain;
    }

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        if (!randomSelection) {
            List<Iterator<Move>> iteratorList = new ArrayList<Iterator<Move>>(childMoveSelectorList.size());
            for (MoveSelector moveSelector : childMoveSelectorList) {
                iteratorList.add(moveSelector.iterator());
            }
            return new IteratorChain(iteratorList);
        } else {
            return new RandomUnionMoveIterator();
        }
    }

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    protected Iterator getSwitchedFacetsAndChildren() {
      
      final Object renderedValue = this.restoredRenderedValue;


      return new IteratorChain(new FilterIterator(getRenderedTabs(), new Predicate() {


        public boolean evaluate(Object object) {
          UITab tab = (UITab) object;
          
          if (tab.isDisabled()) {

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