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Clarify CompositePropertySource behavior for EnumerablePropertySource contract 

Closes gh-34886
This commit is contained in:
Juergen Hoeller 2025-05-13 16:08:03 +02:00
parent 03ae97b2eb
commit 6a9444473f
1 changed files with 5 additions and 2 deletions
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7
spring-core/src/main/java/org/springframework/core/env/CompositePropertySource.java vendored
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@ -1,5 +1,5 @@
/*
* Copyright 2002-2024 the original author or authors.
* Copyright 2002-2025 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.
@ -34,7 +34,10 @@ import org.springframework.util.StringUtils;
*
* <p>As of Spring 4.1.2, this class extends {@link EnumerablePropertySource} instead
* of plain {@link PropertySource}, exposing {@link #getPropertyNames()} based on the
* accumulated property names from all contained sources (as far as possible).
* accumulated property names from all contained sources - and failing with an
* {@code IllegalStateException} against any non-{@code EnumerablePropertySource}.
* <b>When used through the {@code EnumerablePropertySource} contract, all contained
* sources are expected to be of type {@code EnumerablePropertySource} as well.</b>
*
* @author Chris Beams
* @author Juergen Hoeller