| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.sling.models.impl.model; |
| |
| import java.lang.reflect.Constructor; |
| import java.util.Comparator; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * Comparator which sorts constructors by the number of parameters |
| * in reverse order (most params to least params). |
| * If two constructors have the same number of parameters constructors with |
| * @Inject annotation are sorted first. |
| */ |
| class ParameterCountInjectComparator implements Comparator<Constructor<?>> { |
| |
| @Override |
| public int compare(Constructor<?> o1, Constructor<?> o2) { |
| int result = compareParameterCount(o2.getParameterTypes().length, o1.getParameterTypes().length); |
| if (result==0) { |
| return compareInjectAnnotation(o1, o2); |
| } |
| else { |
| return result; |
| } |
| } |
| |
| private int compareParameterCount(int x, int y) { |
| return (x < y) ? -1 : ((x == y) ? 0 : 1); |
| } |
| |
| private int compareInjectAnnotation(Constructor<?> o1, Constructor<?> o2) { |
| boolean hasInject1 = o1.isAnnotationPresent(Inject.class); |
| boolean hasInject2 = o2.isAnnotationPresent(Inject.class); |
| if (hasInject1 && !hasInject2) { |
| return -1; |
| } |
| else if (hasInject2 && !hasInject1) { |
| return 1; |
| } |
| else { |
| return 0; |
| } |
| } |
| |
| } |