net.anwiba.commons.utilities.enumeration.StringToEnumerationConveter Maven / Gradle / Ivy

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/*
 * #%L
 * anwiba commons core
 * %%
 * Copyright (C) 2007 - 2016 Andreas Bartels
 * %%
 * This program 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 program 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 General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
package net.anwiba.commons.utilities.enumeration;

import net.anwiba.commons.lang.functional.IConverter;
import net.anwiba.commons.utilities.string.StringUtilities;

public final class StringToEnumerationConveter implements IConverter, RuntimeException> {
  @SuppressWarnings("rawtypes")
  private final Class clazz;

  public StringToEnumerationConveter(@SuppressWarnings("rawtypes") final Class clazz) {
    if (clazz == null || !clazz.isEnum()) {
      throw new IllegalArgumentException();
    }
    this.clazz = clazz;
  }

  @SuppressWarnings("unchecked")
  @Override
  public Enum convert(final String input) {
    if (StringUtilities.isNullOrEmpty(input)) {
      return null;
    }
    return Enum.valueOf(this.clazz, input);
  }
}