TYPO3.Flow

Extra info: property introduction does work if you also introduce an interface in the aspect. But as there could be usecases where you don't want to introduce methods it should be possible to do without that.

debugged a bit further, seems like getProperties() in the reflectionService does not have the introduced properties during the compile run, so doctrine:migrationgenerate does not pick up the new properties. Might be a good thing if someone more into the reflection / proxy building stuff has a look at this issue.

Bug still present in current master. Introduced properties are not added by doctrine.

Uncaught Exception
    The class "CGROSS\Drinkaccounting\Aop\MultiCommunitySupport" is tagged
  to
    be an aspect but doesn't contain advices nor pointcut or introduction
    declarations.

<?php
namespace CGROSS\Drinkaccounting\Aop;

use TYPO3\Flow\Annotations as Flow;

/**
 * Inject community-attribute to every class
 *
 * @Flow\Aspect
 */
class MultiCommunitySupport {

    /**
     * @var string
     * @Flow\Introduce("class(CGROSS\Drinkaccounting\Domain\Model\User)")
     */
    protected $community;

}

Adding a pointcut (even if not used) and the error message is gone BUT the property is still not created by doctrine:update.

<?php
namespace CGROSS\Drinkaccounting\Aop;

use TYPO3\Flow\Annotations as Flow;

/**
 * Inject community-attribute to every class
 *
 * @Flow\Aspect
 */
class MultiCommunitySupport {

    /**
     * A pointcut which matches all guestbook submission method invocations
     *
     * @Flow\Pointcut("method(CGROSS\Drinkaccounting\Domain\Model\User->create())")
     */
    public function guestbookSubmissionPointcut() {}

    /**
     * @var string
     * @Flow\Introduce("class(CGROSS\Drinkaccounting\Domain\Model\User)")
     */
    protected $community;

}

There are actually two points where propertyIntroduction is not taken into consideration:

1. At the end of ProxyClassBuilder->buildAspectContainer, the count of propertyIntroductions isn't taken into account before throwing the "doesn't contain advices nor pointcut or introductions" exception.

2. In AspectContainer->reduceTargetClassNames, the targetClassName cache isn't reduced over propertyIntroductions, leading to all classes that are not also subject to another advice or interface introduction to not be considered at all, hence no property is introduced in the proxy class.

I'll provide a change set for that tomorrow. From there on it's maybe easier to find the spot where to put a proper update of the reflectionData.
My current assumption is, that the ReflectionData is collected before the proxy exists and afterwards the reflectionData isn't updated anymore.