java - get project Linked resources path from eclipse-plugin run -

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i writing eclipse-plugin accesses opened projects in eclipse. in these projects need access source files, unfortunately can in different location project working directory.

consider creating new project existing sources:

the new project in folder c:/users/username/runtime-eclipseapplication/jabref whereas source files reside in c:/users/username/downloads/git/jabref/

this creates following entry in .project-file:

... <linkedresources>     ...     <link>         <name>java</name>         <type>2</type>         <location>c:/users/username/downloads/git/jabref/src/main/java</location>     </link> </linkedresources> ...

and .classpath-file:

<?xml version="1.0" encoding="utf-8"?> <classpath>   <classpathentry kind="src" output="classes" path="java"/>   <classpathentry kind="src" output="classes" path="gen"/>   <classpathentry kind="var" path="jre_lib" rootpath="jre_srcroot" sourcepath="jre_src"/>  ...

now current codes gives me filepath this: net/sf/jabref/imports/msbibimporter.java (which findbugs buginstance via bug.getprimarysourcelineannotation().getsourcepath()).

my goal find corresponding git directory file using if(new repositorybuilder().findgitdir(new file(filepath)).getgitdir() != null)

all approaches gave me paths within project direcotry "c:/users/username/runtime-eclipseapplication/jabref/jabref/java" not exist physically.

i have access project via iproject project.

i got work following 3 lines 

ipath path = project.getfile(bug.getprimarysourcelineannotation().getsourcepath()).getprojectrelativepath(); iresource res = getresource(project, path.removelastsegments(1).tostring(), path.lastsegment()); file file = res.getlocation().tofile();

and method https://stackoverflow.com/a/7727264/455578

iresource getresource(iproject project, string folderpath, string filename) {      ijavaproject javaproject = javacore.create(project);     try {         (ipackagefragmentroot root : javaproject.getallpackagefragmentroots()) {             ipackagefragment folderfragment = root.getpackagefragment(folderpath);             iresource folder = folderfragment.getresource();             if (folder == null || ! folder.exists() || !(folder instanceof icontainer)) {                 continue;             }              iresource resource = ((icontainer) folder).findmember(filename);             if (resource.exists()) {                 return resource;             }         }     } catch (javamodelexception e) {         // todo auto-generated catch block         e.printstacktrace();     }      // file not found in source path     return null; }

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