From 9d3c965436a529a598e1b1ee297b6a0c86b536f0 Mon Sep 17 00:00:00 2001
From: Maxim <maxplusim@mail.ru>
Date: Mon, 18 Aug 2025 23:43:10 +0300
Subject: [PATCH] Fix exception during applying policy

---
 core/pom.xml                                                | 5 +++++
 core/src/main/java/org/verapdf/policy/PolicyChecker.java    | 3 ++-
 .../main/java/org/verapdf/policy/SchematronPipeline.java    | 3 ++-
 core/src/main/java/org/verapdf/report/XsltTransformer.java  | 3 ++-
 pom.xml                                                     | 6 ++++++
 5 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/core/pom.xml b/core/pom.xml
index c61d1f48e..fb5f60a74 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -86,6 +86,11 @@
       <scope>test</scope>
     </dependency>
 
+    <dependency>
+      <groupId>net.sf.saxon</groupId>
+      <artifactId>Saxon-HE</artifactId>
+    </dependency>
+
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
diff --git a/core/src/main/java/org/verapdf/policy/PolicyChecker.java b/core/src/main/java/org/verapdf/policy/PolicyChecker.java
index 18182c1d7..cb37cc897 100644
--- a/core/src/main/java/org/verapdf/policy/PolicyChecker.java
+++ b/core/src/main/java/org/verapdf/policy/PolicyChecker.java
@@ -215,7 +215,8 @@ private static void applySchematronXsl(final InputStream schematronXsl, final In
 	}
 
 	private static TransformerFactory getTransformerFactory() {
-		TransformerFactory fact = TransformerFactory.newInstance();
+		TransformerFactory fact = TransformerFactory.newInstance("net.sf.saxon.TransformerFactoryImpl",
+				null);
 		try {
 			fact.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 			fact.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "file");
diff --git a/core/src/main/java/org/verapdf/policy/SchematronPipeline.java b/core/src/main/java/org/verapdf/policy/SchematronPipeline.java
index 31a883b13..bb9cfcb0c 100644
--- a/core/src/main/java/org/verapdf/policy/SchematronPipeline.java
+++ b/core/src/main/java/org/verapdf/policy/SchematronPipeline.java
@@ -90,7 +90,8 @@ private static File createTempFileResult(final Transformer transformer, final St
 	}
 
 	private static TransformerFactory getTransformerFactory() {
-		TransformerFactory fact = TransformerFactory.newInstance();
+		TransformerFactory fact = TransformerFactory.newInstance("net.sf.saxon.TransformerFactoryImpl",
+				null);
 		try {
 			fact.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 			fact.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "file");
diff --git a/core/src/main/java/org/verapdf/report/XsltTransformer.java b/core/src/main/java/org/verapdf/report/XsltTransformer.java
index 305581a97..ad3689606 100644
--- a/core/src/main/java/org/verapdf/report/XsltTransformer.java
+++ b/core/src/main/java/org/verapdf/report/XsltTransformer.java
@@ -77,7 +77,8 @@ public static void transform(InputStream source, InputStream xslt, PrintWriter d
 	}
 
 	private static TransformerFactory getTransformerFactory() {
-		TransformerFactory fact = TransformerFactory.newInstance();
+		TransformerFactory fact = TransformerFactory.newInstance("net.sf.saxon.TransformerFactoryImpl",
+				null);
 		try {
 			fact.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
 			fact.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "file");
diff --git a/pom.xml b/pom.xml
index 6af8cd52e..d4ec59fc4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -189,6 +189,12 @@
         <version>2.3.0.1</version>
       </dependency>
 
+      <dependency>
+        <groupId>net.sf.saxon</groupId>
+        <artifactId>Saxon-HE</artifactId>
+        <version>12.8</version>
+      </dependency>
+
     </dependencies>
   </dependencyManagement>