symfony/symfony — pull request #6016 by lolautruche (2012-11-14 22:45:38+00:00)
Title: Added HttpCache\Store::generateContentDigest() + changed $root visibility

Bug fix: no
Feature addition: yes
Backwards compatibility break: no
Symfony2 tests pass: yes
Fixes the following tickets: -
Todo: -
License of the code: MIT
Documentation PR: -

## Description
This PR adds 2 small changes in base `HttpCache\Store`:

1. Adds `generateContentDigests()` protected method, allowing to easily override the default behavior for special cases.
2. Change `$root` visibility to *protected* to let descendant access it.

This allows special implementations of HttpCache when storing specific cache files in a different place is needed.

## Example
An example of implementation can be found [in eZ Publish 5 source code](https://github.com/ezsystems/ezp-next/blob/master/eZ/Publish/Core/MVC/Symfony/Cache/Http/LocationAwareStore.php). In this example, eZ Publish content cache entities are stored under a different folder than regular cache entities in order to ease cache purge based on a content location.

## Testing
No unit tests were added since the behavior didn't change.