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https://issues.apache.org/jira/browse/MNG-5900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15223115#comment-15223115
]
Christian Schulte commented on MNG-5900:
----------------------------------------
I meant documenting that {{this}} is not to be confused with the way the Java
keyword {{this}} works.
{code}
class A
{
void method()
{
this.effectiveMethod();
^^^^ It's that 'this' I am talking about.
}
void effectiveMethod()
{
System.out.println("A");
}
}
class B extends A
{
void effectiveMethod()
{
System.out.println("B");
}
}
{code}
{code}
new A().method();
A
new B().method();
B
{code}
The {{this}} in class A will lead to the method in class B getting called. So
{{this}} refers to the effective object (A or B) and not A and only A. That's
what I find misleading. Linking to this issue in the documentation would
already be sufficient as everything is mentioned here now already.
> early interpolation: support ${this.*} as expression
> ----------------------------------------------------
>
> Key: MNG-5900
> URL: https://issues.apache.org/jira/browse/MNG-5900
> Project: Maven
> Issue Type: New Feature
> Components: Inheritance and Interpolation
> Reporter: Robert Scholte
> Fix For: Issues to be reviewed for 4.x
>
>
> Right now we have $\{project.\*} which always interpolates values based on
> the final project: "classical" interpolation is "late" interpolation. So it
> is not possible that parent poms can lock values, ie avoid child poms
> override. By adding $\{this} for "early" interpolation, it will be possible
> to have intermediate interpolation.
> If a pomfile depends on a parent, that parent will first resolve all
> $\{this.\*} values for itself. Once the fully inherited pom is there, all
> $\{project.\*} will be resolved.
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