[jira] (MSHARED-243) add a way to calculate diffs of a directory at 2 different times

["Kristian Rosenvold (JIRA)" <ji...@codehaus.org>]

     [ https://jira.codehaus.org/browse/MSHARED-243?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kristian Rosenvold updated MSHARED-243:
---------------------------------------

    Fix Version/s: maven-shared-utils-0.1
    
> add a way to calculate diffs of a directory at 2 different times
> ----------------------------------------------------------------
>
>                 Key: MSHARED-243
>                 URL: https://jira.codehaus.org/browse/MSHARED-243
>             Project: Maven Shared Components
>          Issue Type: New Feature
>          Components: maven-shared-utils
>            Reporter: Mark Struberg
>            Assignee: Mark Struberg
>             Fix For: maven-shared-utils-0.1
>
>
> For implementing the incremental build it should be possible to detect which files got created by a certain mojo execution. 
> An example would be the maven-compiler-plugin which currently doesn't remove class files for Java sources which got deleted. 
> The idea is to introduce a helper which can capture a snapshot of a certain directory (e.g. target/classes), then you do the mojo work (javac invocation with all source files) and take a capture of that very directory again.
> The tool will allow you to take a 'diff' and store the names of all the added files to a file in target/...
> The next time you invoke a build you can delete all those created classes by this very mojo-execution and so you do not have any left-overs.

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