[jira] [Commented] (MINDEXER-81) Make ArtifactInfo extensible

["Laird Nelson (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MINDEXER-81?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15949969#comment-15949969 ] 

Laird Nelson commented on MINDEXER-81:
--------------------------------------

I have a concrete use case that I'll elaborate here.  I am a new user of Lucene (no idea what I'm doing :-)) and of the Maven Indexer.  Hopefully my explanation below will give you insight into how a person new to this project approaches it.

I'd like to write an {{IndexCreator}} that, in the abstract, adds fields to the index that represent certain contents of {{META-INF/MANIFEST.MF}} files.  I'd like to let users search, for example, for artifacts containing {{META-INF/MANIFEST.MF}} files with {{Fred}} in their {{Class-Path}} headers.

I see no way to simply write an {{IndexCreator}} (and no other code) to do this.  It seems that I would (with the current architecture) have to edit {{ArtifactInfo}} to have some new instance variables to store this information.

It also looks like other {{IndexCreator}} implementations that work with {{META-INF/MANIFEST.MF}} files, like the {{OsgiArtifactIndexCreator}}, do exactly this: I note that {{ArtifactInfo}}, though it would seem to _want_ to be a generic sort of class, has fields in it like [{{bundleSymbolicName}}|https://github.com/apache/maven-indexer/blob/master/indexer-core/src/main/java/org/apache/maven/index/ArtifactInfo.java#L236], suggesting that for every indexer an edit to {{ArtifactInfo}}'s source code is necessary.  This shouldn't be the case.

> Make ArtifactInfo extensible
> ----------------------------
>
>                 Key: MINDEXER-81
>                 URL: https://issues.apache.org/jira/browse/MINDEXER-81
>             Project: Maven Indexer
>          Issue Type: Improvement
>            Reporter: Cservenak, Tamas
>             Fix For: 6.0
>
>
> Make ArtifactInfo extensible, a followup of MINDEXER-32



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