Introduce Stream support in PropertySources and PropertyValues [SPR-16894]

[spring-projects-issues]

Christoph Dreis opened SPR-16894 and commented

Hi,

while doing a PR in Spring-Boot polishing some stream creations, I figured that I could do even more cleanups if Spring-Framework would deliver a default implementation for stream support in PropertySources - providing an imho more modern way of interacting with them. E.g. something like that:

 /**
 * Returns a sequential {@code Stream} for the {@link PropertySource objects}
 * contained in this instance.
 */
default Stream<PropertySource<?>> stream() {
 return StreamSupport.stream(spliterator(), false);
}

 

Let me know what you think of the proposal and the attached PR. I'd be happy if the pull request is accepted.

Cheers,

Christoph

---

Affects: 5.0.6

Issue Links:

• ObjectProvider iterable/stream access for "beans of type" resolution in @Bean methods [SPR-11419] #16046 ObjectProvider iterable/stream access for "beans of type" resolution in @Bean methods
• Support for Supplier as a deferred bean creation [SPR-16973] #21511 Support for Supplier as a deferred bean creation

Referenced from: pull request #1847, and commits d8c7270

[spring-projects-issues]

Juergen Hoeller commented

I've applied a broader revision for consistent Iterator as well as Stream support in PropertySources and PropertyValues (both of which are effectively pseudo-collections with quite similar design), with the implementations providing the best possible Spliterator whereas the interfaces just keep alternative implementations working.