COMKeyWrapperIterator.java

/**
 *
 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 **/
package lucee.runtime.com;

import java.util.Iterator;

import lucee.runtime.exp.CasterException;
import lucee.runtime.exp.PageRuntimeException;
import lucee.runtime.op.Caster;
import lucee.runtime.type.Collection;

import com.jacob.com.EnumVariant;

/**
 * MUST this is a value iterator instead of a key iterator
 * 
 */
public final class COMKeyWrapperIterator implements Iterator<Collection.Key> {

    private EnumVariant enumVariant;
    private COMObject wrapper;

    /**
     * @param wrapper
     */
    public COMKeyWrapperIterator(COMObject wrapper) {
        this.enumVariant=new EnumVariant(wrapper.getDispatch());
        this.wrapper=wrapper;
    }

    @Override
    public void remove() {
        enumVariant.safeRelease();
    }

    @Override
    public boolean hasNext() {
        return enumVariant.hasMoreElements();
    }

    @Override
    public Collection.Key next() {
        try {
			return Caster.toKey(COMUtil.toObject(wrapper,enumVariant.Next(),"",null));
		} catch (CasterException e) {
			throw new PageRuntimeException(e);
		}
    }
}