spring ConfigDataLocationBindHandler 源码
springboot ConfigDataLocationBindHandler 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/config/ConfigDataLocationBindHandler.java
/*
* Copyright 2012-2022 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.context.config;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.stream.Collectors;
import org.springframework.boot.context.properties.bind.AbstractBindHandler;
import org.springframework.boot.context.properties.bind.BindContext;
import org.springframework.boot.context.properties.bind.BindHandler;
import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
import org.springframework.boot.origin.Origin;
/**
* {@link BindHandler} to set the {@link Origin} of bound {@link ConfigDataLocation}
* objects.
*
* @author Phillip Webb
* @author Scott Frederick
*/
class ConfigDataLocationBindHandler extends AbstractBindHandler {
@Override
@SuppressWarnings("unchecked")
public Object onSuccess(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Object result) {
if (result instanceof ConfigDataLocation location) {
return withOrigin(context, location);
}
if (result instanceof List) {
List<Object> list = ((List<Object>) result).stream().filter(Objects::nonNull).collect(Collectors.toList());
for (int i = 0; i < list.size(); i++) {
Object element = list.get(i);
if (element instanceof ConfigDataLocation location) {
list.set(i, withOrigin(context, location));
}
}
return list;
}
if (result instanceof ConfigDataLocation[] unfilteredLocations) {
ConfigDataLocation[] locations = Arrays.stream(unfilteredLocations).filter(Objects::nonNull)
.toArray(ConfigDataLocation[]::new);
for (int i = 0; i < locations.length; i++) {
locations[i] = withOrigin(context, locations[i]);
}
return locations;
}
return result;
}
private ConfigDataLocation withOrigin(BindContext context, ConfigDataLocation result) {
if (result.getOrigin() != null) {
return result;
}
Origin origin = Origin.from(context.getConfigurationProperty());
return result.withOrigin(origin);
}
}
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