字段或Java bean getter / setter的成员名称的访问器。

/**********************************************************************

Copyright (c) 2010 Andy Jefferson and others. All rights reserved.

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.


Contributors:

   ...

 **********************************************************************/

//package com.nowjava;/** from n o w j a v a . c o m**/


import javax.lang.model.element.Element;

import javax.lang.model.element.ElementKind;

import javax.lang.model.element.ExecutableElement;


import javax.lang.model.type.TypeKind;

import javax.lang.model.type.TypeMirror;


public class Main {

    /**

     * Accessor for the member name for a field or Java bean getter/setter.

     * If this is a field then just returns the field name, and if "getXxx"/"setXxx" then returns "xxx"

     * @param el The element

     * @return The member name

     */

    public static String getMemberName(Element el) {

        if (el.getKind() == ElementKind.FIELD) {

            return el.toString();

        } else if (el.getKind() == ElementKind.METHOD) {

            ExecutableElement method = (ExecutableElement) el;

            if (isJavaBeanGetter(method) || isJavaBeanSetter(method)) {
            /** 
             来自 NowJava.com**/

                String name = method.getSimpleName().toString();

                if (name.startsWith("is")) {

                    name = name.substring(2);

                } else {

                    name = name.substring(3);

                }

                return Character.toLowerCase(name.charAt(0))

                        + name.substring(1);

            }

        }

        return null;

    }


    /**

     * Convenience method to return if the provided method is a java bean getter.

     * @param method The method

     * @return Whether it is a java bean getter

     */

    public static boolean isJavaBeanGetter(ExecutableElement method) {

        String methodName = method.getSimpleName().toString();

        if (method.getKind() == ElementKind.METHOD

                && method.getParameters().isEmpty()) {

            if (returnsBoolean(method) && methodName.startsWith("is")) {

                return true;

            } else if (methodName.startsWith("get") && !returnsVoid(method)) {

                return true;

            }

        }

        return false;

    }


    /**

     * Convenience method to return if the provided method is a java bean setter.

     * @param method The method

     * @return Whether it is a java bean setter

     */

    public static boolean isJavaBeanSetter(ExecutableElement method) {

        String methodName = method.getSimpleName().toString();

        return method.getKind() == ElementKind.METHOD

                && methodName.startsWith("set")

                && method.getParameters().isEmpty() && !returnsVoid(method);

    }


    /**

     * Convenience method returning if the provided method returns boolean.

     * @param method The method

     * @return Whether it returns boolean

     */

    public static