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Date: Sun, 27 Dec 2009 17:29:55 -0600 (CST)
From: "Benjamin Bentmann (JIRA)" <jira@codehaus.org>
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Subject: [jira] Commented: (MNG-4368) DefaultArtifactInstaller should only
 overwrite files if timestamp has changed
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    [ http://jira.codehaus.org/browse/MNG-4368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=204235#action_204235 ] 

Benjamin Bentmann commented on MNG-4368:
----------------------------------------

Revised in [r894114|http://svn.apache.org/viewvc?view=revision&revision=894114] to have artifact installation happen if any of the following conditions are met:
* destination does not exist
* artifact type is "pom"
* destination has different timestamp than source
* destination has different length than source

> DefaultArtifactInstaller should only overwrite files if timestamp has changed
> -----------------------------------------------------------------------------
>
>                 Key: MNG-4368
>                 URL: http://jira.codehaus.org/browse/MNG-4368
>             Project: Maven 2 & 3
>          Issue Type: Improvement
>         Environment: Linux, JDK 1.5
>            Reporter: Johannes Martin
>             Fix For: 2.2.2, 3.0-alpha-3
>
>
> install:install (from maven-install-plugin) by default uses DefaultArtifactInstaller to install artifacts. DefaultArtifactInstaller in turn uses FileUtils.copyFile(), thereby overwriting destination files even if they are unchanged. It would be helpful if DefaultArtifactInstaller used FileUtils.copyFileIfModified() instead, at least as an option, to speed up the build process.

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