Examples of org.dspace.content.ItemIterator

org.dspace.content.ItemIterator
Specialized iterator for DSpace Items. This iterator is used for loading items into memory one by one, since in many cases, it would not make sense to load a set of items into memory all at once. For example, loading in an entire community or site's worth of items wouldn't make sense. Note that this class is not a real Iterator, as it does not implement the Iterator interface @author Robert Tansley @author Richard Jones @version $Revision: 3761 $

  {
    int count_native = 0;
    int count_import = 0;
    
    // get all items from that collection
        ItemIterator iterator = collection.getItems();


        try
        {
            // iterate through the items in this collection, and count how many
            // are native, and how many are imports, and which collections they
            // came from
            while (iterator.hasNext())
            {
                Item item = iterator.next();


                if (item.isOwningCollection(collection))
                    count_native++;
                else
                    count_import++;
            }
        }
        finally
        {
            if (iterator != null)
                iterator.close();
        }
        
        int[] counts = new int[2];
        counts[0] = count_native;
        counts[1] = count_import;

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      {
        EPerson eperson = EPerson.findByEmail(context, email);
          context.setCurrentUser(eperson);
        context.turnOffAuthorisationSystem();
        
        ItemIterator it = collection.getAllItems();
        IndexBrowse ib = new IndexBrowse(context);
        int i=0;
        while (it.hasNext()) {
          i++;
          Item item = it.next();
          System.out.println("Deleting: " + item.getHandle());
          ib.itemRemoved(item);
          collection.removeItem(item);
          // commit every 50 items
          if (i%50 == 0) {

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                applyFiltersCommunity(c, topLevelCommunities[i]);
        }
        else 
        {
            //otherwise, just find every item and process
            ItemIterator i = Item.findAll(c);
            try
            {
                while (i.hasNext() && processed < max2Process)
                {
                    applyFiltersItem(c, i.next());
                }
            }
            finally
            {
                if (i != null)
                    i.close();
            }
        }
    }

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                                              throws Exception
    {
        //only apply filters if collection not in skip-list
        if(!inSkipList(collection.getHandle()))
        {
            ItemIterator i = collection.getItems();
            try
            {
                while (i.hasNext() && processed < max2Process)
                {
                    applyFiltersItem(c, i.next());
                }
            }
            finally
            {
                if (i != null)
                    i.close();
            }
        }
    }

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  {


    ArrayList<Item> items = new ArrayList<Item>();
    
    // get all items from that collection
        ItemIterator iterator = collection.getItems();
        try
        {
            while (iterator.hasNext())
            {
                Item item = iterator.next();


                if (! item.isOwningCollection(collection))
                    items.add(item);
            }
        }
        finally
        {
            if (iterator != null)
                iterator.close();
        }
        
        return items;
  }

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            ArrayList itemmd = new ArrayList();
            if(dso.getType() == Constants.ITEM)
            {
               itemmd.add(dso.getID());
               exporter = new MetadataExport(context, new ItemIterator(context, itemmd),true);
            }
            else if(dso.getType() == Constants.COLLECTION)
            {
               Collection collection = (Collection)dso;
               ItemIterator toExport = collection.getAllItems();
               exporter = new MetadataExport(context, toExport,true);
            }
            else if(dso.getType() == Constants.COMMUNITY)
            {
               exporter = new MetadataExport(context, (Community)dso, false);

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     * @param context
     * @param force
     */
    public void updateIndex(Context context, boolean force) {
        try {
            ItemIterator items = null;
            try {
                for (items = Item.findAll(context); items.hasNext();) {
                    Item item = (Item) items.next();
                    indexContent(context, item, force);
                    item.decache();
                }
            } finally {
                if (items != null) {
                    items.close();
                }
            }


            Collection[] collections = Collection.findAll(context);
            for (int i = 0; i < collections.length; i++) {

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                    }
                }
            }
            else
            {
                ItemIterator ii = Item.findByMetadataField(context, lift_schema, lift_element, lift_qualifier, Item.ANY);
                while (ii.hasNext())
                {
                    if (processOneItem(context, ii.next(), line, now))
                        status = 1;
                }
            }
            log.debug("Cache size at end = "+context.getCacheSize());
            context.complete();

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     */
    @Override
    protected DAVResource[] children() throws SQLException
    {
        Vector result = new Vector();
        ItemIterator ii = this.collection.getItems();
        try
        {
            while (ii.hasNext())
            {
                Item item = ii.next();
                result.add(new DAVItem(this.context, this.request, this.response,
                        makeChildPath(item), item));
            }
        }
        finally
        {
            if (ii != null)
                ii.close();
        }
        
        return (DAVResource[]) result.toArray(new DAVResource[result.size()]);
    }

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        try {
            context = new Context();
            UserRequestParams uparams = refreshParams(context);


            List<Object> entities = new ArrayList<Object>();
            ItemIterator items = Item.findAll(context);
            while (items.hasNext()) {
                entities.add(new ItemEntity(items.next(), context, uparams));
            }


            return entities;
        } catch (SQLException ex) {
            throw new EntityException("Internal server error", "SQL error", 500);

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