From 273558ec551778d2f11f848b50cd4ab2cca78594 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Wed, 9 Mar 2022 11:43:24 +0100
Subject: PROJBasedOperation PROJJSON export: issues an empty 'parameters'
 array if needed (refs #3076)

---
 src/iso19111/operation/projbasedoperation.cpp | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/src/iso19111/operation/projbasedoperation.cpp b/src/iso19111/operation/projbasedoperation.cpp
index 6e0fd109..fd03fc09 100644
--- a/src/iso19111/operation/projbasedoperation.cpp
+++ b/src/iso19111/operation/projbasedoperation.cpp
@@ -232,15 +232,13 @@ void PROJBasedOperation::_exportToJSON(
     method()->_exportToJSON(formatter);
 
     const auto &l_parameterValues = parameterValues();
-    if (!l_parameterValues.empty()) {
-        writer->AddObjKey("parameters");
-        {
-            auto parametersContext(writer->MakeArrayContext(false));
-            for (const auto &genOpParamvalue : l_parameterValues) {
-                formatter->setAllowIDInImmediateChild();
-                formatter->setOmitTypeInImmediateChild();
-                genOpParamvalue->_exportToJSON(formatter);
-            }
+    writer->AddObjKey("parameters");
+    {
+        auto parametersContext(writer->MakeArrayContext(false));
+        for (const auto &genOpParamvalue : l_parameterValues) {
+            formatter->setAllowIDInImmediateChild();
+            formatter->setOmitTypeInImmediateChild();
+            genOpParamvalue->_exportToJSON(formatter);
         }
     }
 }
-- 
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