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

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/*
 * Copyright 2014 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 java.lang.annotation.Annotation;
import java.util.List;
import java.util.Map;

import br.com.objectos.way.core.testing.Testable;
import br.com.objectos.way.core.testing.Testables;
import br.com.objectos.way.core.util.WayIterables;
import br.com.objectos.way.core.util.WayMap;

import com.google.common.base.Optional;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Maps;

/**
 * @author [email protected] (Marcio Endo)
 */
public class AnnotationInfoMap implements Testable, WayMap {

  private static final AnnotationInfoMap EMPTY_MAP = mapOf(ImmutableList. of());

  private final List list;
  private final Map qualifiedNameMap;

  private AnnotationInfoMap(List list) {
    this.list = list;
    qualifiedNameMap = Maps.uniqueIndex(list, AnnotationInfoToQualifiedName.get());
  }

  public static AnnotationInfoMap emptyMap() {
    return EMPTY_MAP;
  }

  public static AnnotationInfoMap mapOf(List list) {
    return new AnnotationInfoMap(list);
  }

  public Optional get(Class type) {
    String qname = type.getName();
    AnnotationInfo maybe = qualifiedNameMap.get(qname);
    return Optional.fromNullable(maybe);
  }

  public List getAnnotatedWith(Class type) {
    return WayIterables.from(list)
        .filter(AnnotationInfoHasAnnotation.get(type))
        .toImmutableList();
  }

  public Optional getFirstAnnotatedWith(Class type) {
    return WayIterables.from(list)
        .filter(AnnotationInfoHasAnnotation.get(type))
        .first();
  }

  @Override
  public boolean isEqual(AnnotationInfoMap that) {
    return Testables.isEqualHelper()
        .equal(list, that.list)
        .result();
  }

  @Override
  public String toString() {
    return list.toString();
  }

  @Override
  public List list() {
    return list;
  }

}