From 52e63c361ff50781d5a4c65f14ad8a6f10a41685 Mon Sep 17 00:00:00 2001
From: Georgy Litvinov <georgy.litvinov@tib.eu>
Date: Wed, 16 Aug 2023 10:44:39 +0200
Subject: [PATCH] set trasformer factory implementation

---
 .../dynapi/components/operations/XMLTransformation.java      | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dynapi/components/operations/XMLTransformation.java b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dynapi/components/operations/XMLTransformation.java
index e240108b35..4b13637ece 100644
--- a/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dynapi/components/operations/XMLTransformation.java
+++ b/api/src/main/java/edu/cornell/mannlib/vitro/webapp/dynapi/components/operations/XMLTransformation.java
@@ -77,8 +77,11 @@ private ByteArrayOutputStream transform(String input, String styles) throws Exce
         InputStream styleInputStream = IOUtils.toInputStream(styles, StandardCharsets.UTF_8);
         Source stylesource = new StreamSource(styleInputStream);
         ByteArrayOutputStream output = new ByteArrayOutputStream();
-        TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        TransformerFactory transformerFactory = TransformerFactory.newInstance("net.sf.saxon.TransformerFactoryImpl", null);
         Transformer transformer = transformerFactory.newTransformer(stylesource);
+        if (transformer == null) {
+            throw new Exception("Failed to initialize transformer. Check styles.");
+        }
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder db = dbf.newDocumentBuilder();
         Document doc = db.parse(inputStream);