br.com.objectos.way.code.EnumConstantInfo Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of way-code Show documentation
The newest version!
/*
 * 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.way.code;

import br.com.objectos.way.core.auto.AutoPojo;
import br.com.objectos.way.core.testing.Testable;
import br.com.objectos.way.core.testing.Testables;

import com.google.common.base.Enums;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;

/**
 * @author [email protected] (Marcio Endo)
 */
@AutoPojo
public abstract class EnumConstantInfo implements Testable {

  public abstract SimpleTypeInfo enumType();
  public abstract String value();

  EnumConstantInfo() {
  }

  public static EnumConstantInfoBuilder builder() {
    return new EnumConstantInfoBuilderPojo();
  }

  public > E getEnumValue(Class enumType) {
    Preconditions.checkArgument(enumType.isAssignableFrom(enumType));
    return Enums.getIfPresent(enumType, value()).get();
  }

  @Override
  public final boolean isEqual(EnumConstantInfo that) {
    return Testables.isEqualHelper()
        .equal(enumType(), that.enumType())
        .equal(value(), that.value())
        .result();
  }

  @Override
  public String toString() {
    return enumType().simpleName() + "." + value();
  }

  @Override
  public final int hashCode() {
    return Objects.hashCode(enumType(), value());
  }

  @Override
  public final boolean equals(final Object obj) {
    if (obj == this) {
      return true;
    }
    if (obj instanceof EnumConstantInfo) {
      final EnumConstantInfo that = (EnumConstantInfo) obj;
      return enumType().equals(that.enumType())
          && value().equals(that.value());
    } else {
      return false;
    }
  }

}