From b5369cc79eccc625419d37bb97a5361731fd8f0f Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Tue, 6 Oct 2020 22:15:31 +0200
Subject: Add a AuthorityFactory::createDatumEnsemble() method, and make it
 inherit from ObjectUsage

as mandated by ISO 19111:2019
---
 include/proj/datum.hpp | 2 +-
 include/proj/io.hpp    | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/proj/datum.hpp b/include/proj/datum.hpp
index f1d45c6b..35b8576e 100644
--- a/include/proj/datum.hpp
+++ b/include/proj/datum.hpp
@@ -125,7 +125,7 @@ using DatumEnsembleNNPtr = util::nn<DatumEnsemblePtr>;
  *
  * \remark Implements DatumEnsemble from \ref ISO_19111_2019
  */
-class PROJ_GCC_DLL DatumEnsemble final : public common::IdentifiedObject,
+class PROJ_GCC_DLL DatumEnsemble final : public common::ObjectUsage,
                                          public io::IJSONExportable {
   public:
     //! @cond Doxygen_Suppress
diff --git a/include/proj/io.hpp b/include/proj/io.hpp
index 19ed292d..b4db0ef7 100644
--- a/include/proj/io.hpp
+++ b/include/proj/io.hpp
@@ -71,6 +71,10 @@ class Datum;
 using DatumPtr = std::shared_ptr<Datum>;
 using DatumNNPtr = util::nn<DatumPtr>;
 
+class DatumEnsemble;
+using DatumEnsemblePtr = std::shared_ptr<DatumEnsemble>;
+using DatumEnsembleNNPtr = util::nn<DatumEnsemblePtr>;
+
 class Ellipsoid;
 using EllipsoidPtr = std::shared_ptr<Ellipsoid>;
 using EllipsoidNNPtr = util::nn<EllipsoidPtr>;
@@ -930,6 +934,10 @@ class PROJ_GCC_DLL AuthorityFactory {
 
     PROJ_DLL datum::DatumNNPtr createDatum(const std::string &code) const;
 
+    PROJ_DLL datum::DatumEnsembleNNPtr
+    createDatumEnsemble(const std::string &code,
+                        const std::string &type = std::string()) const;
+
     PROJ_DLL datum::GeodeticReferenceFrameNNPtr
     createGeodeticDatum(const std::string &code) const;
 
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