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commit d78696ac857f0160bb4920aff8583a349fe13368
Author: Andy Seaborne <[email protected]>
AuthorDate: Thu Jan 29 14:50:12 2026 +0000

    PrefixMappingUtils - use WrappedGraph
---
 .../main/java/org/apache/jena/util/PrefixMappingUtils.java   | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git 
a/jena-core/src/main/java/org/apache/jena/util/PrefixMappingUtils.java 
b/jena-core/src/main/java/org/apache/jena/util/PrefixMappingUtils.java
index 8fe5a1bc77..47d0c61d27 100644
--- a/jena-core/src/main/java/org/apache/jena/util/PrefixMappingUtils.java
+++ b/jena-core/src/main/java/org/apache/jena/util/PrefixMappingUtils.java
@@ -49,14 +49,6 @@ public class PrefixMappingUtils {
         final PrefixMapping prefixMapping = calcInUsePrefixMapping(graph) ;
         prefixMapping.lock() ;
         Graph graph2 = new WrappedGraph(graph) {
-            @Override
-            public void performAdd(Triple triple)
-            { throw new UnsupportedOperationException() ; }
-
-            @Override
-            public void performDelete(Triple triple)
-            { throw new UnsupportedOperationException() ; }
-
             @Override
             public PrefixMapping getPrefixMapping() {
                 return prefixMapping ;
@@ -111,7 +103,6 @@ public class PrefixMappingUtils {
 
         // Map URI to prefix, with partial lookup (all uri keys that partly 
match the URI)
         Trie<String> trie = new Trie<>() ;
-        // Change this to "add(uri, uri)" to calculate the uris.
         pmap.forEach((prefix,uri)-> trie.add(uri, prefix)) ;
         // Prefixes in use.
         // (URIs if "add(uri, uri)")
@@ -250,8 +241,9 @@ public class PrefixMappingUtils {
             processTTL(node.getTriple(), inUse, prefixMapping);
             return ;
         }
-        else
+        else {
             return;
+        }
         // URI case.
         int idx = SplitIRI.splitpoint(uri) ;
         if ( idx < 0 )

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