org.springframework.boot.context.properties.source.ConfigurationPropertySourcesPropertyResolver Maven / Gradle / Ivy
/*
* Copyright 2012-2024 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.properties.source;
import org.springframework.core.env.AbstractPropertyResolver;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySources;
import org.springframework.core.env.PropertySourcesPropertyResolver;
/**
* Alternative {@link PropertySourcesPropertyResolver} implementation that recognizes
* {@link ConfigurationPropertySourcesPropertySource} and saves duplicate calls to the
* underlying sources if the name is a value {@link ConfigurationPropertyName}.
*
* @author Phillip Webb
*/
class ConfigurationPropertySourcesPropertyResolver extends AbstractPropertyResolver {
private final MutablePropertySources propertySources;
private final DefaultResolver defaultResolver;
ConfigurationPropertySourcesPropertyResolver(MutablePropertySources propertySources) {
this.propertySources = propertySources;
this.defaultResolver = new DefaultResolver(propertySources);
}
@Override
public boolean containsProperty(String key) {
ConfigurationPropertySourcesPropertySource attached = getAttached();
if (attached != null) {
ConfigurationPropertyName name = ConfigurationPropertyName.of(key, true);
if (name != null) {
try {
return attached.findConfigurationProperty(name) != null;
}
catch (Exception ex) {
// Ignore
}
}
}
return this.defaultResolver.containsProperty(key);
}
@Override
public String getProperty(String key) {
return getProperty(key, String.class, true);
}
@Override
public T getProperty(String key, Class targetValueType) {
return getProperty(key, targetValueType, true);
}
@Override
protected String getPropertyAsRawString(String key) {
return getProperty(key, String.class, false);
}
private T getProperty(String key, Class targetValueType, boolean resolveNestedPlaceholders) {
Object value = findPropertyValue(key);
if (value == null) {
return null;
}
if (resolveNestedPlaceholders && value instanceof String string) {
value = resolveNestedPlaceholders(string);
}
return convertValueIfNecessary(value, targetValueType);
}
private Object findPropertyValue(String key) {
ConfigurationPropertySourcesPropertySource attached = getAttached();
if (attached != null) {
ConfigurationPropertyName name = ConfigurationPropertyName.of(key, true);
if (name != null) {
try {
ConfigurationProperty configurationProperty = attached.findConfigurationProperty(name);
return (configurationProperty != null) ? configurationProperty.getValue() : null;
}
catch (Exception ex) {
// Ignore
}
}
}
return this.defaultResolver.getProperty(key, Object.class, false);
}
private ConfigurationPropertySourcesPropertySource getAttached() {
ConfigurationPropertySourcesPropertySource attached = (ConfigurationPropertySourcesPropertySource) ConfigurationPropertySources
.getAttached(this.propertySources);
Iterable attachedSource = (attached != null) ? attached.getSource() : null;
if ((attachedSource instanceof SpringConfigurationPropertySources springSource)
&& springSource.isUsingSources(this.propertySources)) {
return attached;
}
return null;
}
/**
* Default {@link PropertySourcesPropertyResolver} used if
* {@link ConfigurationPropertySources} is not attached.
*/
static class DefaultResolver extends PropertySourcesPropertyResolver {
DefaultResolver(PropertySources propertySources) {
super(propertySources);
}
@Override
public T getProperty(String key, Class targetValueType, boolean resolveNestedPlaceholders) {
return super.getProperty(key, targetValueType, resolveNestedPlaceholders);
}
}
}