From 8b312e9d69874d1c4d1e76acaf95f27da5072455 Mon Sep 17 00:00:00 2001
From: Ashod Nakashian <ashod.nakashian@collabora.co.uk>
Date: Fri, 10 Nov 2017 09:00:52 -0500
Subject: RDF: support cloning of all entries for a given type

This is currently unused, but can come in handy later
on when we implement copy/pasting of metadata fields.

Change-Id: Idd4d6c186fa5c75e06f0ab1b0dfcbc85b6343116
Reviewed-on: https://gerrit.libreoffice.org/44602
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Ashod Nakashian <ashnakash@gmail.com>
---
 sw/inc/rdfhelper.hxx             |  7 +++++++
 sw/source/core/doc/rdfhelper.cxx | 28 ++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/sw/inc/rdfhelper.hxx b/sw/inc/rdfhelper.hxx
index bf72a5be40be..5ec56b8a1935 100644
--- a/sw/inc/rdfhelper.hxx
+++ b/sw/inc/rdfhelper.hxx
@@ -55,6 +55,13 @@ public:
                                 const css::uno::Reference<css::rdf::XResource>& xSubject,
                                 const OUString& rKey, const OUString& rValue);
 
+    /// Clone all statements in the graph of type rType, if any exists, from one subject to another.
+    static void cloneStatements(const css::uno::Reference<css::frame::XModel>& xSrcModel,
+                                const css::uno::Reference<css::frame::XModel>& xDstModel,
+                                const OUString& rType,
+                                const css::uno::Reference<css::rdf::XResource>& xSrcSubject,
+                                const css::uno::Reference<css::rdf::XResource>& xDstSubject);
+
     /// Remove all statements in the graph of type rType, if any exists.
     static void clearStatements(const css::uno::Reference<css::frame::XModel>& xModel,
                                 const OUString& rType,
diff --git a/sw/source/core/doc/rdfhelper.cxx b/sw/source/core/doc/rdfhelper.cxx
index 4834dd2a5a12..8e8c78d90313 100644
--- a/sw/source/core/doc/rdfhelper.cxx
+++ b/sw/source/core/doc/rdfhelper.cxx
@@ -125,6 +125,34 @@ void SwRDFHelper::clearStatements(const css::uno::Reference<css::frame::XModel>&
     }
 }
 
+void SwRDFHelper::cloneStatements(const css::uno::Reference<css::frame::XModel>& xSrcModel,
+                                  const css::uno::Reference<css::frame::XModel>& xDstModel,
+                                  const OUString& rType,
+                                  const css::uno::Reference<css::rdf::XResource>& xSrcSubject,
+                                  const css::uno::Reference<css::rdf::XResource>& xDstSubject)
+{
+    uno::Reference<uno::XComponentContext> xComponentContext(comphelper::getProcessComponentContext());
+    uno::Reference<rdf::XURI> xType = rdf::URI::create(xComponentContext, rType);
+    uno::Reference<rdf::XDocumentMetadataAccess> xDocumentMetadataAccess(xSrcModel, uno::UNO_QUERY);
+    uno::Sequence< uno::Reference<rdf::XURI> > aGraphNames = xDocumentMetadataAccess->getMetadataGraphsWithType(xType);
+    if (!aGraphNames.hasElements())
+        return;
+
+    for (const uno::Reference<rdf::XURI>& xGraphName : aGraphNames)
+    {
+        uno::Reference<rdf::XNamedGraph> xGraph = xDocumentMetadataAccess->getRDFRepository()->getGraph(xGraphName);
+        uno::Reference<container::XEnumeration> xStatements = xGraph->getStatements(xSrcSubject, uno::Reference<rdf::XURI>(), uno::Reference<rdf::XURI>());
+        while (xStatements->hasMoreElements())
+        {
+            const rdf::Statement aStatement = xStatements->nextElement().get<rdf::Statement>();
+
+            const OUString sKey = aStatement.Predicate->getStringValue();
+            const OUString sValue = aStatement.Object->getStringValue();
+            addStatement(xDstModel, rType, xGraphName->getLocalName(), xDstSubject, sKey, sValue);
+        }
+    }
+}
+
 std::map<OUString, OUString> SwRDFHelper::getTextNodeStatements(const OUString& rType, SwTextNode& rTextNode)
 {
     uno::Reference<rdf::XResource> xTextNode(SwXParagraph::CreateXParagraph(*rTextNode.GetDoc(), &rTextNode), uno::UNO_QUERY);
-- 
cgit