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https://issues.apache.org/jira/browse/MNG-7360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17538875#comment-17538875
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ASF GitHub Bot commented on MNG-7360:
-------------------------------------
gnodet commented on PR #697:
URL: https://github.com/apache/maven/pull/697#issuecomment-1130093500
Superseded by #744
> Can't parse project that has <parent> tag in plugin configuration
> -----------------------------------------------------------------
>
> Key: MNG-7360
> URL: https://issues.apache.org/jira/browse/MNG-7360
> Project: Maven
> Issue Type: Bug
> Components: build/consumer
> Affects Versions: 4.0.x-candidate
> Environment: Apache Maven 4.0.0-alpha-1-SNAPSHOT
> (3a06530dbce82e2054afa3cc4c81631910474bd0)
> Maven home:
> /usr/local/Cellar/maven-snapshot/4.0.0-alpha-1-SNAPSHOT_290/libexec
> Java version: 17.0.1, vendor: Eclipse Adoptium, runtime:
> /Library/Java/JavaVirtualMachines/temurin-17.jdk/Contents/Home
> Default locale: en_GB, platform encoding: UTF-8
> OS name: "mac os x", version: "11.5", arch: "x86_64", family: "mac"
> Reporter: Maarten Mulders
> Assignee: Guillaume Nodet
> Priority: Major
> Attachments: Screenshot 2021-12-13 at 13.45.01.png
>
>
> The Apache Camel project has the following snippet in their root POM:
> {code:xml}
> <plugin>
> <groupId>org.codehaus.mojo</groupId>
> <artifactId>flatten-maven-plugin</artifactId>
> <version>1.2.5</version>
> <executions>
> <execution>
> <id>default-cli</id>
> <phase>process-resources</phase>
> <goals>
> <goal>flatten</goal>
> </goals>
> <configuration>
> <!-- snip -->
> <pomElements>
> <!-- snip -->
> <parent>expand</parent>
> <!-- snip -->
> </pomElements>
> </configuration>
> </execution>
> </executions>
> </plugin>
> {code}
> With Maven 4's "Build Consumer" feature enabled, parsing this plugin
> definition breaks with
> {code:none}
> [INFO] BuildTimeEventSpy is registered.
> [INFO] Scanning for projects...
> [ERROR] [ERROR] Some problems were encountered while processing the POMs:
> [FATAL] Unable to transform pom
> [ERROR] The build could not read 1 project -> [Help 1]
> [ERROR]
> [ERROR] The project (/Users/maarten/Code/open-source/camel/pom.xml) has 1
> error
> [ERROR] Unable to transform pom: Not a regular file:
> /Users/maarten/Code/open-source/pom.xml
> [ERROR]
> [ERROR] To see the full stack trace of the errors, re-run Maven with the '-e'
> switch
> [ERROR] Re-run Maven using the '-X' switch to enable verbose output
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please
> read the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
> {code}
> I suspect that the {{<parent>}} tag is the culprit. It seems to me that it
> causes the {{ParentXMLFilter}} to think it needs to do its work. The attached
> screenshot shows the stacktrace that brought me to this idea. As the
> {{BufferingParser}} class processes its buffer of events, it encounters a
> situation of an "end {{parent}} tag". But that {{parent}} tag did not have
> child elements {{version}} and {{relativePath}} and so, it decides it needs
> to resolve the parent as {{../pom.xml}} against the project path
> ({{/Users/maarten/Code/open-source/camel/}} in my case), leading to the
> non-existing path of {{/Users/maarten/Code/open-source/pom.xml}}.
> I think the bug here is not that it resolves to a non-existing path (it's
> good to check that before actually reading the file). I think the bug is that
> the {{ParentXMLFilter}} is acting on the {{parent}} tag inside the plugin
> configuration.
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