001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.com;
020
021import java.util.Iterator;
022
023import lucee.runtime.exp.CasterException;
024import lucee.runtime.exp.PageRuntimeException;
025import lucee.runtime.op.Caster;
026import lucee.runtime.type.Collection;
027
028import com.jacob.com.EnumVariant;
029
030/**
031 * MUST this is a value iterator instead of a key iterator
032 * 
033 */
034public final class COMKeyWrapperIterator implements Iterator<Collection.Key> {
035
036    private EnumVariant enumVariant;
037    private COMObject wrapper;
038
039    /**
040     * @param wrapper
041     */
042    public COMKeyWrapperIterator(COMObject wrapper) {
043        this.enumVariant=new EnumVariant(wrapper.getDispatch());
044        this.wrapper=wrapper;
045    }
046
047    @Override
048    public void remove() {
049        enumVariant.safeRelease();
050    }
051
052    @Override
053    public boolean hasNext() {
054        return enumVariant.hasMoreElements();
055    }
056
057    @Override
058    public Collection.Key next() {
059        try {
060                        return Caster.toKey(COMUtil.toObject(wrapper,enumVariant.Next(),"",null));
061                } catch (CasterException e) {
062                        throw new PageRuntimeException(e);
063                }
064    }
065}