From 77e2a91a783a02aed1cf835cdc9d41681e013ea9 Mon Sep 17 00:00:00 2001
From: Erik Hanson <erik@erikhanson.dev>
Date: Wed, 13 Nov 2024 09:49:36 -0800
Subject: [PATCH] pkp/oaiJats#53 DOI text nodes are doubled up

---
 OAIMetadataFormat_JATS.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/OAIMetadataFormat_JATS.php b/OAIMetadataFormat_JATS.php
index 8fdbfd8..d0ab2cb 100644
--- a/OAIMetadataFormat_JATS.php
+++ b/OAIMetadataFormat_JATS.php
@@ -365,8 +365,10 @@ protected function _mungeMetadata($doc, $journal, $article, $section, $issue) {
 		// Store the DOI
 		if ($doi = trim($article->getStoredPubId('doi'))) {
 			$match = $xpath->query("//article/front/article-meta/article-id[@pub-id-type='doi']");
-			if ($match->length) $match->item(0)->appendChild($doc->createTextNode($doi));
-			else {
+            if ($match->length) {
+                $originalDoiNode = $match->item(0)->firstChild;
+                $match->item(0)->replaceChild($doc->createTextNode($doi), $originalDoiNode);
+            } else {
 				$articleIdNode = $this->_addChildInOrder($articleMetaNode, $doc->createElement('article-id'));
 				$articleIdNode->setAttribute('pub-id-type', 'doi');
 				$articleIdNode->appendChild($doc->createTextNode($doi));