spring IncludeExcludeContentSelector 源码
springboot IncludeExcludeContentSelector 代码
文件路径：/spring-boot-project/spring-boot-tools/spring-boot-loader-tools/src/main/java/org/springframework/boot/loader/tools/layer/IncludeExcludeContentSelector.java
/*
* Copyright 2012-2020 the original author or authors.
*
* 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
*
* https://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.springframework.boot.loader.tools.layer;
import java.util.Collections;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;
import org.springframework.boot.loader.tools.Layer;
import org.springframework.util.Assert;
/**
* {@link ContentSelector} backed by {@code include}/{@code exclude} {@link ContentFilter
* filters}.
*
* @param <T> the content type
* @author Madhura Bhave
* @author Phillip Webb
* @since 2.3.0
*/
public class IncludeExcludeContentSelector<T> implements ContentSelector<T> {
private final Layer layer;
private final List<ContentFilter<T>> includes;
private final List<ContentFilter<T>> excludes;
public IncludeExcludeContentSelector(Layer layer, List<ContentFilter<T>> includes,
List<ContentFilter<T>> excludes) {
this(layer, includes, excludes, Function.identity());
}
public <S> IncludeExcludeContentSelector(Layer layer, List<S> includes, List<S> excludes,
Function<S, ContentFilter<T>> filterFactory) {
Assert.notNull(layer, "Layer must not be null");
Assert.notNull(filterFactory, "FilterFactory must not be null");
this.layer = layer;
this.includes = (includes != null) ? adapt(includes, filterFactory) : Collections.emptyList();
this.excludes = (excludes != null) ? adapt(excludes, filterFactory) : Collections.emptyList();
}
private <S> List<ContentFilter<T>> adapt(List<S> list, Function<S, ContentFilter<T>> mapper) {
return list.stream().map(mapper).collect(Collectors.toList());
}
@Override
public Layer getLayer() {
return this.layer;
}
@Override
public boolean contains(T item) {
return isIncluded(item) && !isExcluded(item);
}
private boolean isIncluded(T item) {
if (this.includes.isEmpty()) {
return true;
}
for (ContentFilter<T> include : this.includes) {
if (include.matches(item)) {
return true;
}
}
return false;
}
private boolean isExcluded(T item) {
if (this.excludes.isEmpty()) {
return false;
}
for (ContentFilter<T> exclude : this.excludes) {
if (exclude.matches(item)) {
return true;
}
}
return false;
}
}
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- 本文标签： Java Spring Spring Boot
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