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DDC-2865: [GH-882] Efficient counting on Criteria #3621

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doctrinebot opened this Issue · 3 comments

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@doctrinebot

Jira issue originally created by user @doctrinebot:

This issue is created automatically through a Github pull request on behalf of bakura10:

Url: #882

Message:

Hi,

This is an attempt to solve this very annoying issue: http://www.doctrine-project.org/jira/browse/[DDC-2217](http://www.doctrine-project.org/jira/browse/DDC-2217)

I'm not sure about my solution as I'm not really into Doctrine internals.

Use case

I have a library that is based exclusively on Criteria API. A Paginator adapter uses an empty Criteria to count how many elements are in the collection. However, EntityRepository's matching method always initialize the whole collection into an ArrayCollection. This is unusable in most cases and make the API unusable for my use case.

Solution

I've created a new LazyCollectionCriteria that implements an efficient count. I think the cleanest solution would be to add a method to the Selectable interface: with a count method. But I think this is not possible now, unfortunately.

If the solution seems nice to you, I'll write the tests.

ping @ocramius, @mac_nibblet and @thinkscape (this should make ZfrRest usable :D)

@doctrinebot

Comment created by @doctrinebot:

A related Github Pull-Request [GH-882] was closed:
#882

@doctrinebot

Issue was closed with resolution "Fixed"

@doctrinebot doctrinebot added this to the 2.5 milestone
@doctrinebot doctrinebot closed this
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