elasticsearch / solr search in ezpublish 2014.11

Using eZ Publish community 2014.11, I'd like to index contents in Elastic Search or Solr (or similar index engines) in order to :

perform full text search on contents (with respect for access rights on contents, and object relations extraction)
make custom calls to index in custom controllers to bypass mysql content repository limitations regarding sorting on different classes attributes

What is the prefered way of doing performing ezfind-like 2014.11 ?

Notes :

I'm not using legacy stack and try to avoid it as much as possible in order to facilitate further migrations, but if I have to I'll use it.
Currently, I'm planning to use this intallation documentation ezfind LS 5.2
There is some activity around these question here and here
there's a bundle by netgen
In previous versions I used to use ezfind for that which is available in 2014-11 distribution, but I also see elasticsearch bundles in this version. I quickly tried to use it but go the following errors :

```

php ezpublish/console ezpublish:elasticsearch_create_index --env=dev
PHP Fatal error:  Call to undefined method eZPublishCorePersistenceLegacyContentSearchHandler_000000007c8f5baa000000006bdeda53::setCommit() in /var/www/ez5/vendor/ezsystems/ezpublish-kernel/eZ/Publish/Core/Persistence/Cache/SearchHandler.php on line 122
PHP Stack trace:
PHP   1. {main}() /var/www/ez5/ezpublish/console:0
PHP   2. Symfony\Component\Console\Application->run() /var/www/ez5/ezpublish/console:27
PHP   3. eZ\Bundle\EzPublishCoreBundle\Console\Application->doRun() /var/www/ez5/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:124
PHP   4. Symfony\Bundle\FrameworkBundle\Console\Application->doRun() /var/www/ez5/vendor/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishCoreBundle/Console/Application.php:41
PHP   5. Symfony\Component\Console\Application->doRun() /var/www/ez5/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php:96
PHP   6. Symfony\Component\Console\Application->doRunCommand() /var/www/ez5/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:193
PHP   7. Symfony\Component\Console\Command\Command->run() /var/www/ez5/vendor/symfony/symfony/src/Symfony/Component/Console/Application.php:896
PHP   8. eZ\Bundle\EzPublishElasticsearchBundle\Command\ElasticsearchCreateIndexCommand->execute() /var/www/ez5/vendor/symfony/symfony/src/Symfony/Component/Console/Command/Command.php:252
PHP   9. eZ\Publish\Core\Persistence\Cache\SearchHandler->setCommit() /var/www/ez5/vendor/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishElasticsearchBundle/Command/ElasticsearchCreateIndexCommand.php:61

```

Solution

The best way I found so far is to call ezFind from symfony as explained here :

http://share.ez.no/blogs/carlos-revillo/ez-find-with-symfony-controller-and-twig-templates