/* ======================================================================
   Parts Copyright 2006 University of Leeds, Oxford University, University of the Highlands and Islands.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

====================================================================== */

package org.bodington.server.userimport.oucsir;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

class Utils
{

    /**
     * Put all the items in an iterator into a map. Items in the iterator must
     * implement Map.Entry.
     * @see java.util.Map.Entry
     * @param it The iterator to add the items from.
     * @return A map.
     * @throws IllegalArgumentException If any of the items in the iterator don't
     * implement Map.Entry.
     */
    public static Map createMap(Iterator it)
    {
        Map map = new HashMap();
        Object item;
        while (it.hasNext())
        {
            item = it.next();
            if (item instanceof Map.Entry)
            {
                Map.Entry entry = (Map.Entry) item;
                map.put(entry.getKey(), entry.getValue());
            }
            else
            {
                throw new IllegalArgumentException(
                    "Iterator can only contain Map.Entry instaces. " + item);
            }
        }
        return map;
    }
}