/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.commons.configuration2.spring;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.configuration2.Configuration;
import org.springframework.core.env.EnumerablePropertySource;

/**
 * Allow use of Apache Commons Configuration Objects as Spring PropertySources
 */
public class ConfigurationPropertySource extends EnumerablePropertySource<Configuration>
{

    public ConfigurationPropertySource(String name, Configuration source)
    {
       super(name, source);
    }

    protected ConfigurationPropertySource(String name)
    {
       super(name);
    }

    @Override
    public String[] getPropertyNames()
    {
       final List<String> keys = new ArrayList<String>();
       final Iterator<String> keysIterator = source.getKeys();
       while (keysIterator.hasNext())
       {
          keys.add(keysIterator.next());
       }
       return keys.toArray(new String[keys.size()]);
    }

    @Override
    public Object getProperty(String name)
    {
       return source.getProperty(name);
   }
}
