com.zxy.commons.lang.utils.MapsUtils.java Source code

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Here is the source code for com.zxy.commons.lang.utils.MapsUtils.java

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/*
 * 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 com.zxy.commons.lang.utils;

import java.lang.reflect.InvocationTargetException;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;

/**
 * Map
 * 
 * <p>
 * <a href="MapsUtils.java"><i>View Source</i></a>
 * </p>
 * 
 * @author zhaoxunyong@qq.com
 * @version 1.0
 * @since 1.0
 */
public final class MapsUtils {
    private MapsUtils() {
    }

    /**
     * map?null
     * 
     * @param map map
     * @return ?
     */
    public static boolean isEmpty(Map<?, ?> map) {
        return map == null || map.isEmpty();
    }

    /**
     * map??null
     * 
     * @param map map
     * @return ??
     */
    public static boolean isNotEmpty(Map<?, ?> map) {
        return !isEmpty(map);
    }

    /**
     * ?map{@link BeanUtils#populate(Object, Map)}?
     * 
     * @param map map?
     * @param classes 
     * @return ??
     * @throws IllegalAccessException IllegalAccessException
     * @throws InstantiationException InstantiationException
     * @throws InvocationTargetException InvocationTargetException
     * @see BeanUtils#populate(Object, Map)
     */
    public static Object convertObject(Map<String, Object> map, Class<?> classes)
            throws InstantiationException, IllegalAccessException, InvocationTargetException {
        Object object = null;
        object = classes.newInstance();
        BeanUtils.populate(object, map);
        return object;
    }

    /**
     * ?map?{@link BeanUtils#describe(Object)}?
     * 
     * @param obj 
     * @return map?
     * @throws IllegalAccessException IllegalAccessException
     * @throws InvocationTargetException InvocationTargetException
     * @throws NoSuchMethodException NoSuchMethodException
     * @see BeanUtils#describe(Object)
     */
    public static Map<?, ?> convertMap(Object obj)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
        Map<?, ?> map = BeanUtils.describe(obj);
        // ?key:class,
        map.remove("class");

        return map;
    }
}