UnboundElementsSourceFilter Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/properties/source/UnboundElementsSourceFilter.java lines 37–53

public class UnboundElementsSourceFilter implements Function<ConfigurationPropertySource, Boolean> {

	private static final Set<String> BENIGN_PROPERTY_SOURCE_NAMES = Collections
		.unmodifiableSet(new HashSet<>(Arrays.asList(StandardEnvironment.SYSTEM_ENVIRONMENT_PROPERTY_SOURCE_NAME,
				StandardEnvironment.SYSTEM_PROPERTIES_PROPERTY_SOURCE_NAME)));

	@Override
	public Boolean apply(ConfigurationPropertySource configurationPropertySource) {
		Object underlyingSource = configurationPropertySource.getUnderlyingSource();
		if (underlyingSource instanceof PropertySource<?> propertySource) {
			String name = propertySource.getName();
			return !BENIGN_PROPERTY_SOURCE_NAMES.contains(name);
		}
		return true;
	}

}