gistfile1.txt

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.user.associated.data.util;

import com.liferay.portal.kernel.model.BaseModel;
import com.liferay.portal.kernel.util.StringUtil;

import java.lang.reflect.Method;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Drew Brokke
 */
public class UserIdFieldNameUtil {

	public static <T extends BaseModel> String[] getUserIdFieldNames(
		Class<T> clazz) {

		List<String> userIdFieldNames = new ArrayList<>();

		Method[] methods = clazz.getMethods();

		for (Method method : methods) {
			String methodName = method.getName();

			if (methodName.startsWith("get") && methodName.endsWith("UserId")) {
				String formattedName = StringUtil.replaceFirst(
					methodName, "get", "");

				userIdFieldNames.add(
					StringUtil.lowerCaseFirstLetter(formattedName));
			}
		}

		return userIdFieldNames.toArray(new String[0]);
	}

}