Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2011-2013 HTTL Team.
 *  
 * 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.
 */

import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

import java.util.Map;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

public class Main {
    private static final ConcurrentMap<Class<?>, Map<String, Method>> GETTER_CACHE = new ConcurrentHashMap<Class<?>, Map<String, Method>>();

    public static Method getGetter(Object bean, String property) {
        Map<String, Method> cache = GETTER_CACHE.get(bean.getClass());
        if (cache == null) {
            cache = new ConcurrentHashMap<String, Method>();
            for (Method method : bean.getClass().getMethods()) {
                if (Modifier.isPublic(method.getModifiers()) && !Modifier.isStatic(method.getModifiers())
                        && !void.class.equals(method.getReturnType()) && method.getParameterTypes().length == 0) {
                    String name = method.getName();
                    if (name.length() > 3 && name.startsWith("get")) {
                        cache.put(name.substring(3, 4).toLowerCase() + name.substring(4), method);
                    } else if (name.length() > 2 && name.startsWith("is")) {
                        cache.put(name.substring(2, 3).toLowerCase() + name.substring(3), method);
                    }
                }
            }
            Map<String, Method> old = GETTER_CACHE.putIfAbsent(bean.getClass(), cache);
            if (old != null) {
                cache = old;
            }
        }
        return cache.get(property);
    }
}