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Subject: Re: Eclipse build path loses Ivy library on reload
From: =?iso-8859-1?Q?Nicolas_Lalev=E9e?= <nicolas.lalevee@hibnet.org>
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Le 3 f=E9vr. 2012 =E0 22:31, Nelson, Ryan a =E9crit :

> I have a very odd problem here (possible bug?).  When I open Eclipse, =
or
> when I close and re-open a project, Eclipse loses the Ivy library from
> the build path.  The entry in the .classpath file for the project does
> not change:
>=20
>=20
>=20
> <classpath>
>=20
>            <classpathentry kind=3D"src" path=3D"src"/>
>=20
>            <classpathentry kind=3D"con"
> path=3D"org.eclipse.jdt.launching.JRE_CONTAINER"/>
>=20
>            <classpathentry kind=3D"con"
> =
path=3D"org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=3D=
i
> vy.xml&amp;confs=3D*"/>
>=20
>            <classpathentry kind=3D"output" path=3D"classes"/>
>=20
> </classpath>
>=20
>=20
>=20
> As you can see, the ivy.xml file is still listed as an entry, but if I
> could take a screengrab of my Eclipse project, Ivy is not listed as a
> library.
>=20
>=20
>=20
> If I right-click the ivy.xml file and choose "Add Ivy Library..." and
> click the Finish button, the library does get added back.  However, =
the
> Add window doesn't close, and this error shows up in the log:=20
>=20
>=20
>=20
> Java Model Exception: Java Model Status [Build path contains duplicate
> entry:
> =
'org.apache.ivyde.eclipse.cpcontainer.IVYDE_CONTAINER/?ivyXmlPath=3Divy.xm=

> l&confs=3D*' for project 'adaptiveMathMotion']
>=20
>            at
> =
org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelO
> peration.java:784)
>=20
>            at
> =
org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.ja
> va:3026)
>=20
>            at
> =
org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.ja
> va:2988)
>=20
>            at
> =
org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.ja
> va:3000)
>=20
>=20
>=20
> So clearly when Eclipse goes to update the .classpath file it finds =
that
> the Ivy library is already there, but why isn't it loading it when the
> project is opened?  I see no other messages in any log file to
> troubleshoot this problem.

I think the IvyDE classpath container is still there even after a =
close-reopen of the project. By default Eclipse doesn't show empty =
library containers [1].

Then the question is why is it empty whereas before the close it was =
properly resolved ? I don't know the answer, sometimes Eclipse =
successfully save the state, sometimes it doesn't, I never figured out =
why or how to make it work reliably. One work around is to enable the =
resolve on startup [2], so with or without a savec classpath, a resolve =
is launched so it could get properly populated. It consumes startup time =
though.

Nicolas

[1] http://ant.apache.org/ivy/ivyde/faq.html#empty-container
[2] =
http://ant.apache.org/ivy/ivyde/history/latest-milestone/preferences.html#=
global


>=20
>=20
>=20
> Is this something I should log on JIRA?
>=20
>=20
>=20
> Ryan
>=20