[
https://issues.apache.org/jira/browse/MSHARED-1285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17792357#comment-17792357
]
ASF GitHub Bot commented on MSHARED-1285:
-----------------------------------------
lalmeras commented on PR #77:
URL: https://github.com/apache/maven-filtering/pull/77#issuecomment-1837113152
@laeubi Can you check
https://github.com/lalmeras/maven-filtering/commit/dbe13673489c61a5c277b507310083bdcaa87c92#diff-a52a7b8a0ff570c181fe18ab238b693c21243d40870dd2d8178340247755bba5R152
?
Pay attention that my test assumes that BuildContext can reply appropriately
`#isUptodate = false` for the updated target file. My stub handles this
correctly, but I think that eclipse inplementation of BuildContext will not
provide the expected result :
https://github.com/eclipse-m2e/m2e-core/blob/348ef88b0d92833eff038d721a98ccf50e9ef4fd/org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/builder/plexusbuildapi/EclipseIncrementalBuildContext.java#L230
Am I missing something ?
> DefaultMavenResourcesFiltering uses BuildContext in a way that fails sometimes
> ------------------------------------------------------------------------------
>
> Key: MSHARED-1285
> URL: https://issues.apache.org/jira/browse/MSHARED-1285
> Project: Maven Shared Components
> Issue Type: Bug
> Reporter: Christoph Läubrich
> Priority: Major
>
> The maven resources plugin uses
> [https://github.com/apache/maven-filtering/blob/master/src/main/java/org/apache/maven/shared/filtering/DefaultMavenResourcesFiltering.java]
> to copy resources, but that component has some subtile flaws reported here:
> [https://github.com/eclipse-m2e/m2e-core/discussions/1468]
> The problematic part is the usage of BuildContext#newScanner that already
> mentions in the javadoc that passing ignoreDelta to neScanner might not
> reveal all required items +*for copy-resources*+ form A -> B and instead
> BuildContext#isUpTodate should be used.
> Just from a quick look I assume that part of code actually wants to use
> something like this:
> {code:java}
> DirectoryScanner ds = new DirectoryScanner() {
> @Override
> protected boolean isSelected(String name, File file) {
> if (file.isFile() && buildContext.isUptodate(getTargetFile(file), file))
> {
> return false;
> }
> return true;
> }
> };
> ds.setBasedir(basedir); {code}
> That way all the code that currently checks for if output directory existed
> before can also be removed what is another issue because it leads to a full
> resources copy even if source+target are already even if a single class file
> is changed while the idea seems more that if the output was not there it
> should not try to be incremental!
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
