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/*
 * Copyright 2015, The Querydsl Team (http://www.querydsl.com/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.
 */
package com.querydsl.core.util;

import java.beans.Introspector;
import java.lang.reflect.Method;

/**
 * BeanUtils provides JavaBean compliant property de/capitalization functionality
 *
 * @author tiwe
 */
public final class BeanUtils {

  public static String capitalize(String name) {
    if (name.length() > 1 && Character.isUpperCase(name.charAt(1))) {
      return name;
    } else if (name.length() > 1) {
      return Character.toUpperCase(name.charAt(0)) + name.substring(1);
    } else {
      return name.toUpperCase();
    }
  }

  public static String uncapitalize(String name) {
    return Introspector.decapitalize(name);
  }

  public static boolean isAccessorPresent(String prefix, String property, Class bean) {
    try {
      bean.getMethod(prefix + capitalize(property));
      return true;
    } catch (NoSuchMethodException ex) {
      return false;
    }
  }

  public static Method getAccessor(String prefix, String property, Class bean) {
    try {
      return bean.getMethod(prefix + capitalize(property));
    } catch (NoSuchMethodException e) {
      return null;
    }
  }

  private BeanUtils() {}
}