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From "Milos Kleint (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-4041) embedder returns stale maven project state
Date Tue, 09 Jun 2009 07:13:42 GMT

    [ http://jira.codehaus.org/browse/MNG-4041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=179738#action_179738
] 

Milos Kleint commented on MNG-4041:
-----------------------------------

Igor: allowing custom cache implementations in the container is more than enough, I never
meant to suggest tat weak references shall be used by default..

> embedder returns stale maven project state
> ------------------------------------------
>
>                 Key: MNG-4041
>                 URL: http://jira.codehaus.org/browse/MNG-4041
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Embedding
>    Affects Versions: 3.0-alpha-2
>            Reporter: Igor Fedorenko
>             Fix For: 3.0-alpha-3
>
>         Attachments: MNG-4041-c.diff, MNG-4041-c.diff, MNG-4041.diff, staleproject.zip
>
>
> Embedder returns stale maven project state after project's pom.xml changed and re-read.
This is extremely common scenario when using embedder in IDE like m2e. See attached sample
project that demonstrates one of many possible ways to trigger this problem.
> The problem appears to be related to static (!) MavenProject cache in DefaultMavenProjectBuilder,
which means that even recreating embedder instance is not going to purge state cache entries.
> Also note that using artifact#getId does not provide enough context to uniquely identify
cached MavenProject instances. This is particularly true for IDEs where the same embedder
instance is likely to be used to process unrelated projects. Cached MavenProject instances
should be identified at least by the following attributes
> * project artifact id
> * values of all properties
> * all active profiles
> * content of all pom.xml files directly and indirectly involved in construction of maven
project instance
> * IDE specific state, like m2e "enable workspace dependency resolution"
> * likely more...

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