br.com.objectos.code.Jdt Maven / Gradle / Ivy

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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.code;

import java.lang.reflect.Field;
import java.util.Optional;

/**
 * @author [email protected] (Marcio Endo)
 */
class Jdt {

  private Jdt() {
  }

  public static Optional field(Object o, String fieldName) {
    try {
      Optional maybe = Optional.empty();

      if (o != null) {
        Class objectType = o.getClass();
        Field field = objectType.getField(fieldName);
        field.setAccessible(true);
        maybe = Optional.of(field);
      }

      return maybe;

    } catch (SecurityException e) {
      throw new JdtWorkaroundException(e);

    } catch (NoSuchFieldException e) {
      throw new JdtWorkaroundException(e);

    } catch (IllegalArgumentException e) {
      throw new JdtWorkaroundException(e);

    }
  }

  public static Optional