src/TrellisMigrator/Implementations/ProjectStructuralData.cs

@@ -78,20 +78,5 @@ namespace TrellisMigrator.Implementations
             }
             return graphs;
         }
-
-        private static void AddModifiedDate(IGraph graph, IUriNode dctermsModifiedNode, IUriNode rootNode)
-        {
-            if (!graph.GetTriplesWithSubjectPredicate(rootNode, dctermsModifiedNode).Any())
-            {
-                graph.Assert(new Triple(
-                    rootNode,
-                    dctermsModifiedNode,
-                    graph.CreateLiteralNode(
-                        DateTime.UtcNow.ToString("o", CultureInfo.InvariantCulture),
-                        new Uri(XmlSpecsHelper.XmlSchemaDataTypeDateTime)
-                    )
-                ));
-            }
-        }
     }
 }
\ No newline at end of file

src/TrellisMigrator/Implementations/ResourceStructuralData.cs

@@ -48,6 +48,7 @@ namespace TrellisMigrator.Implementations
             var basicContainerNode = graph.CreateUriNode(new Uri("http://www.w3.org/ns/ldp#BasicContainer"));
 
             var aNode = graph.CreateUriNode(new Uri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"));
+            var dctermsModifiedNode = graph.CreateUriNode(new Uri("http://purl.org/dc/terms/modified"));
 
             var resourceUrlPrefix = "https://purl.org/coscine/resources";
             var resourcesNode = graph.CreateUriNode(new Uri(resourceUrlPrefix));
@@ -71,6 +72,7 @@ namespace TrellisMigrator.Implementations
                         aNode,
                         basicContainerNode
                     ));
+                    AddModifiedDate(graph, dctermsModifiedNode, resourceNode);
                     graph.Assert(new Triple(
                         resourceNode,
                         partOfNode,
@@ -81,6 +83,7 @@ namespace TrellisMigrator.Implementations
                         aNode,
                         basicContainerNode
                     ));
+                    AddModifiedDate(graph, dctermsModifiedNode, resourcesNode);
                     graph.Assert(new Triple(
                         resourcesNode,
                         partOfNode,
@@ -91,6 +94,7 @@ namespace TrellisMigrator.Implementations
                         aNode,
                         basicContainerNode
                     ));
+                    AddModifiedDate(graph, dctermsModifiedNode, baseNode);
                 }
 
                 var fileGraphs = ListGraphs(resourceGraphName + "/");
@@ -114,6 +118,7 @@ namespace TrellisMigrator.Implementations
                                 aNode,
                                 basicContainerNode
                             ));
+                            AddModifiedDate(graph, dctermsModifiedNode, fileNode);
                         }
                     }
                 }

src/TrellisMigrator/StructuralData.cs

 using Coscine.Configuration;
 using Coscine.Database.Models;
+using System.Globalization;
 using VDS.RDF;
+using VDS.RDF.Parsing;
 using VDS.RDF.Query;
 using VDS.RDF.Storage;
 using VDS.RDF.Update;
@@ -116,6 +118,22 @@ namespace TrellisMigrator
                 );
             }
         }
+
+        public static void AddModifiedDate(IGraph graph, IUriNode dctermsModifiedNode, IUriNode rootNode)
+        {
+            if (!graph.GetTriplesWithSubjectPredicate(rootNode, dctermsModifiedNode).Any())
+            {
+                graph.Assert(new Triple(
+                    rootNode,
+                    dctermsModifiedNode,
+                    graph.CreateLiteralNode(
+                        DateTime.UtcNow.ToString("o", CultureInfo.InvariantCulture),
+                        new Uri(XmlSpecsHelper.XmlSchemaDataTypeDateTime)
+                    )
+                ));
+            }
+        }
+
         public bool HasGraph(string graphName)
         {
             return HasGraph(new Uri(graphName));

src/TrellisMigrator/TrellisMigrator.csproj

@@ -5,7 +5,7 @@
     <TargetFramework>net6.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
-  <Version>0.1.4</Version></PropertyGroup>
+  <Version>0.1.5</Version></PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Coscine.Database" Version="2.*-*" />