Eclipse Maven showing multiple paths for the same file

Question

Is there any setting in Eclipse to show only the Maven project where the file resides?

I have different Maven projects which are modules of a parent Maven project:

projParent
   |-projWeb
   |-projModel
   |-projServices
   |-...

If I look for a file using "Open Resource" (using Ctrl + Shift + r) in Eclipse, it appears in many projects (E.g.: in projParent and in projWeb).

Is there any way to show only relevant folder where that file is actually resided in?

Franco

This is a duplicate of #15065296, but the other question has a much better answer (set folders in parent projects as "derived"). – Sanburn

Answer 1

Try defining a Working Set that includes only the modules in which you want to search and then use that Working Set in the search.

EDIT

Actually I tried it and it just works perfectly by default in eclipse 4.3 (Kepler), only one result is returned for nested projects.

Anyway, here's how to use working set in open resource (the example is not of a resource in a nested module as in this case Kepler don't show duplicate results; so the example is just of two different resources baring the same name in two different modules):

(1) Hit the ctrl+shift+R keys. I searched for a resource called pom.xml. You can see two results:

(2) Press the little downward-pointing arrow on the top right of the window and choose Select Working Set...:

(3) Check the radio button of Selected Working Sets and check the desired projects (in your case the leaf projects):

(4) And voila, Open Resource returns only one result:

Gramps

I do not want use search open as it is time consuming & it does not make sense using it to open file .. i would rather visually distinguish the path of the file – Franco

@Franco you only need to choose in the Open Resource window the Working Set once and it'll be used each time you use it for search, it's not "open search". – Gramps

@Franco I hope the snapshots are right, I can't see them in stack myself (imgur is blocked here...). – Gramps

I think probably working set is the only option i have tried this earlier but only issue is you have to deselect everytime.. however it is weird that eclipse shows the parent & other modules as path for the same file. I was though looking for other setting that can help show only path where in the file actually resides. – Franco

Answer 2

You are probably talking about a kind of duplication between parent project and its sub-modules. In the latest version of Eclipse (from 3.6 maybe and sure from 3.7) there is a new option

Menu Windows >

Item Preferences >

    Tree item Maven >

       Option : Hide folders of physically nested modules

This would not work on a existing project. You must delete them (logically) and re-import them

Pneumoconiosis

It is not working by checking above option.. for example if webservice.java is checked in projservice maven project & projparent is parent maven project of projservice. What I see on openning resources is /projservice/webservice.java & /projparent/projservice/webservice.java... not sure how to get rid of redudant /projparent/projservice/webservice.java entry into open resouces.. I do not want use search open as it is time consuming & it does not make sense using it to open file .. i would rather visually distinguish the path of the file – Franco

A similar option is available in Kepler (4.3) but it doesn't work for me. You can access it through the preferences: In the Maven tab, you can check off "Hide folders of physically nested modules (experimental)" – Bunion

As I said, you MUST delete and re-import them activate this feature, but it could still not work ... ah ... IntelliJ Idea is quite better for that ! – Winifredwinikka

Works when re-importing all projects as "Existing Maven projects" – Lecce

In Eclipse Mars the feature is still marked as "Experimental". – Devilkin

Really ? Indeed, last time I imported a maven project into Eclipse Mars 1, then it automatically found the appropriate structure, hiding nested directories and showing the rights modules. – Winifredwinikka

There's a catch: On Eclipse Oxygen, it doesn't work for me if I import the projects with 'Open project from filesystem'. But it works fine using File -> Import ... -> Maven -> Existing Maven Projects. – Theodor

Answer 3

I just had the same issue and what worked for me was to select Filter Duplicated Resources in the Open Resource dialog:

Another (unrelated) useful feature is to hide submodule-folders from the parent-project in the package explorer.
This can be done by using the Maven modules filter in the menu of the package explorer:

Tested with Eclipse 2019-06 (4.12.0)

Uranometry