001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.components.valid.interceptor;
017
018import java.lang.reflect.Array;
019import java.util.Collection;
020import java.util.Map;
021
022class Util {
023
024    public static long getObjectLen(Object validObject) {
025        if (validObject == null) {
026            return 0;
027        }
028        if (validObject instanceof Number) {
029            return ((Number) validObject).longValue();
030        }
031        if (validObject instanceof CharSequence) {
032            return ((CharSequence) validObject).length();
033        }
034        if (validObject instanceof Map) {
035            return ((Map<?, ?>) validObject).size();
036        }
037        if (validObject instanceof Collection) {
038            return ((Collection) validObject).size();
039        }
040        if (validObject.getClass().isArray()) {
041            return Array.getLength(validObject);
042        }
043        throw new IllegalArgumentException("Can not get object length for class: " + validObject.getClass().getName());
044    }
045
046}