    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *     http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.jxpath;
    019
    020import java.util.Iterator;
    021import java.util.Map;
    022import java.util.Set;
    023
    024/**
    025 * Implements the DynamicPropertyHandler interface for {@link java.util.Map}.
    026 */
    027public class MapDynamicPropertyHandler implements DynamicPropertyHandler {
    028
    029    /**
    030     * Constructs a new instance.
    031     */
    032    public MapDynamicPropertyHandler() {
    033        // empty
    034    }
    035
    036    @Override
    037    public Object getProperty(final Object object, final String propertyName) {
    038        return ((Map) object).get(propertyName);
    039    }
    040
    041    @Override
    042    public String[] getPropertyNames(final Object object) {
    043        final Map map = (Map) object;
    044        final Set set = map.keySet();
    045        final String[] names = new String[set.size()];
    046        final Iterator it = set.iterator();
    047        for (int i = 0; i < names.length; i++) {
    048            names[i] = String.valueOf(it.next());
    049        }
    050        return names;
    051    }
    052
    053    @Override
    054    public void setProperty(final Object object, final String propertyName, final Object value) {
    055        ((Map) object).put(propertyName, value);
    056    }
    057}