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https://issues.apache.org/jira/browse/MNG-7589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17628896#comment-17628896
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Jeff Thomas commented on MNG-7589:
----------------------------------
In fact on the master branch it "looks" like a property with no value will not
even be written...which is sort of more of a problem for me. :(
writer.vm
{code:java}
private void writeTag( String tagName, String defaultValue, String value,
XmlSerializer serializer )
throws IOException
{
if ( value != null && !Objects.equals( defaultValue, value ) )
{
serializer.startTag( NAMESPACE, tagName ).text( value ).endTag(
NAMESPACE, tagName );
}
} {code}
This would make empty tags that were added as placeholders disappear when
simply reading and re-writing the model.
> MavenXpp3Writer write empty property with self-closing tag?
> -----------------------------------------------------------
>
> Key: MNG-7589
> URL: https://issues.apache.org/jira/browse/MNG-7589
> Project: Maven
> Issue Type: Wish
> Components: Core
> Affects Versions: 3.8.6
> Environment: Maven 3.8.6
> Reporter: Jeff Thomas
> Priority: Trivial
>
> I am using a maven-plugin which manipulates the POM and writes a new POM
> model. (similar to 'maven-git-versioning-extension' or
> 'flatten-maven-plugin').
> When writing a POM using the MavenXpp3Writer a property without a value is
> written out as follows:
>
> {code:java}
> <project>
> <properties>
> <some.property></some.property>
> </properties>
> </project>
> {code}
>
> Would it be possible to write this out with a self-closing tag? Or provide an
> option to the writer to do so?
>
> {code:java}
> <project>
> <properties>
> <some.property/>
> </properties>
> </project> {code}
> Its just eye-candy but the IDE (IntelliJ) displays warnings for empty tags
> and I don't want to disable the check globally. :)
>
> Why empty properties?
> For some plugins we use empty properties as placeholders which child projects
> or sub-modules can override. For example: maven-surefire-plugin `argLine`.
> This prevents other IDE errors for missing properties when editing the POM.
>
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