[Archivesspace_Users_Group] Changes to PDF export in 2.8?

Wed Aug 19 12:01:42 EDT 2020

Chris,

I think you were spot on to focus on that '/.ead' part of the message.  I *think* that indeed points to the root cause of the issue, but I've no clue how to untangle it.  Anyhow, I put in a question for the developer who maintains that code (external to ASpace).

You should be able to assign a global variable, just like you had done previously, so hopefully the workaround that you've employed will only be temporary.  Very glad that Lora got you set up with the workaround, since 2.8 has a lot of amazing features (we're about to upgrade to 2.7.1, but already looking forward to the new features in 2.8 and beyond 🙂 )

Thanks for reporting the issue!

Mark

________________________________
From: archivesspace_users_group-bounces at lyralists.lyrasis.org <archivesspace_users_group-bounces at lyralists.lyrasis.org> on behalf of Chris Mayo <mayoc at bc.edu>
Sent: Wednesday, August 19, 2020 9:26 AM
To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org>
Subject: Re: [Archivesspace_Users_Group] Changes to PDF export in 2.8?

Lora, Mark,

Thank you both! Moving the variable did fix the issue, and now I feel a bit sheepish for focusing on the './ead' segment of the error report, not the 'fn:substring' part. I may make more of the refinements Mark suggested later on, but it's working for now, which is the important part. Thanks for the help tracking that down.

Best,
Chris

On Tue, Aug 18, 2020 at 6:12 PM Custer, Mark <mark.custer at yale.edu<mailto:mark.custer at yale.edu>> wrote:
Chris, Lora:

Okay, so I just did a bit more digging (but not enough yet), and I'd say that there must either be a bug in the gem or in the way that it's invoked (I'm leaning toward the latter, but I haven't looked at the ASpace code yet).  Whatever the issue is, it's not what I speculated the first time around.

Chris, like you, I have no problems when running this stylesheet with any version of saxon outside of ArchiveSpace, and most everything looks fine with how you have things set up.  I say "most everything looks fine" only because that $repo variable could select multiple values if you had, say, a  "num" element hand-encoded in the primary finding aid title, and if you did, you'd get an error when trying to run the substring function anyway, since that function will always require a single string and never multiple items in a sequence.  I'd probably change that same Xpath expression to look for the call number in the archdesc/did/unitid[1] area instead, just to play it safe.  Also because I think it's strange that ASpace serializes the unitid to the finding aid title, but that might just be me 🙂.

The issue here, I think, is that you cannot set a global variable in the XSLT stylesheets in ASpace 2.8.  Luckily the default ones don't do that (although I'm surprised, since I do that all the time 🙂), but you should definitely have the option to do that, as you did before. Actually, it looks like the EAC-to-HTML one does declare at least one global variable, but that transformation is not used anywhere in ASpace I don't think, so no worries.

But in the meantime, you can get things working again as Lora just mentioned, by moving your repo variable inside of the "publicationstmt" template instead.  That's the important part right now; good find, Lora!

Mark

________________________________
From: archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org> <archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org>> on behalf of Lora Woodford <Lora.Woodford at lyrasis.org<mailto:Lora.Woodford at lyrasis.org>>
Sent: Tuesday, August 18, 2020 5:07 PM
To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Subject: Re: [Archivesspace_Users_Group] Changes to PDF export in 2.8?

And, as soon as I sent this, I found where that repo variable is being set up at line 126 of your xsl.  If you move that down into the publicationstmt template starting on ln 358 you should be golden.

Lora

From: <archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org>> on behalf of Lora Woodford <Lora.Woodford at lyrasis.org<mailto:Lora.Woodford at lyrasis.org>>
Reply-To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Date: Tuesday, August 18, 2020 at 4:39 PM
To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Subject: Re: [Archivesspace_Users_Group] Changes to PDF export in 2.8?

Hi Chris,

I took a quick look at this, and I do think Mark’s instinct is correct.  It seems an existing (custom to you folks) function in your xsl isn’t working with the recent updates/transition to saxon-rb.

My XSL is pretty rusty these days, but the following lines (ln 364-371) in your as-ead-pdf.xsl are the culprits:

<xsl:choose>

    <xsl:when test="substring($repo,1,2)='IM'">

        <fo:block>Irish Music Archives</fo:block>

    </xsl:when>

    <xsl:otherwise>

        <xsl:apply-templates select="ead:publisher"/>

    </xsl:otherwise>

</xsl:choose>

The error “The context item for axis step ./ead is absent. Found while atomizing the first argument of fn:substring()” points to the fact that the transformation no longer knows how to handle the $repo provided as the first argument in that substring function.  For what it’s worth, removing this customization from your stylesheet (only this customization) results in being able to successfully export/print pdfs over here.

I’ll keep poking, but wanted to give you this partial update sooner rather than later.

Lora

From: <archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org>> on behalf of Chris Mayo <mayoc at bc.edu<mailto:mayoc at bc.edu>>
Reply-To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Date: Monday, August 17, 2020 at 3:04 PM
To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Subject: Re: [Archivesspace_Users_Group] Changes to PDF export in 2.8?

Hi Mark,

Thanks for the suggestion - I hadn't tried yet, but I can successfully run the transform outside of Aspace using Oxygen (I don't know how to run XSL from the command line). I'm not sure whether that obviates the question about the files, but I've attached a sample EAD and the stylesheet (plus a couple of sidecar files) here. It sounds like what's going on is that the version of saxon bundled into Aspace has gotten stricter, and I'm not sure what to do about that. It's fairly important for us to be able to output PDFs directly from the application.

Best,

Chris

On Mon, Aug 17, 2020 at 1:49 PM Custer, Mark <mark.custer at yale.edu<mailto:mark.custer at yale.edu>> wrote:

Chris,

No clue if it's related or not, but it looks like a gem that's utilized for XSLT transformations in ASpace was switched out recently (saxon-xslt -> saxon-rb).  I wonder if the new gem (and/or new version of saxon) is more strict, and only now throwing an error because of that?

In any event, have you tried running the transformations outside of ASpace?  Either way, if you can share a sample EAD file that throws the error and a copy of the in-house ead-to-pdf stylesheet, I'd be curious to take a look. Not that I'm sure I can help, of course :)

Mark

________________________________

From: archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org> <archivesspace_users_group-bounces at lyralists.lyrasis.org<mailto:archivesspace_users_group-bounces at lyralists.lyrasis.org>> on behalf of Chris Mayo <mayoc at bc.edu<mailto:mayoc at bc.edu>>
Sent: Monday, August 17, 2020 1:31 PM
To: Archivesspace Users Group <archivesspace_users_group at lyralists.lyrasis.org<mailto:archivesspace_users_group at lyralists.lyrasis.org>>
Subject: [Archivesspace_Users_Group] Changes to PDF export in 2.8?

Hi all,

We keep a modified in-house version of the ead-to-pdf stylesheet so that we can put out Finding Aids with our own branding and a few other changes. When we recently installed 2.8 on our test server, we discovered that the export to PDF job was failing with the following error info:

"The context item for axis step ./ead is absent. Found while atomizing the first argument of fn:subst"

Our production server is currently running on 2.6, and we had previously updated the test server to 2.7 without that upgrade breaking our stylesheet, so the issue appears to have been introduced between 2.7 and 2.8. As far as I can tell, the base code for the stylesheet didn't change between those versions, and while the error message looks like an Xpath problem, the EAD structure doesn't appear to have changed either.

Has anyone else encountered problems with modified finding aid stylesheets in 2.8, or have any thoughts on what could be causing this error?

Chris

Chris Mayo

Digital Production Librarian

Boston College

chris.mayo at bc.edu<mailto:chris.mayo at bc.edu>

pronouns: they/them/theirs

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Chris Mayo

Digital Production Librarian

Boston College

chris.mayo at bc.edu<mailto:chris.mayo at bc.edu>

pronouns: they/them/theirs

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--
Chris Mayo
Digital Production Librarian
Boston College
chris.mayo at bc.edu<mailto:chris.mayo at bc.edu>
pronouns: they/them/theirs
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