diff --git a/pglab/ParamListJson.cpp b/pglab/ParamListJson.cpp
new file mode 100644
index 0000000..ce1b462
--- /dev/null
+++ b/pglab/ParamListJson.cpp
@@ -0,0 +1,38 @@
+#include "ParamListJson.h"
+#include "ParamListModel.h"
+
+Json::Value ParamToJson(const Param &param)
+{
+	Json::Value v;
+	v["type"] = (int)param.type.toUtf8().data();
+	v["value"] = param.value.toUtf8().data();
+	return v;
+}
+
+Param ParamFromJson(const Json::Value &json)
+{
+	Param p;
+
+	return p;
+}
+
+Json::Value ParamListModelToJson(const t_ParamList &list)
+{
+	Json::Value root;
+	for (const auto &param : list) {
+		root.append(ParamToJson(param));
+	}
+	return root;
+}
+
+t_ParamList ParamListModelFromJson(const Json::Value &json)
+{
+	t_ParamList result;
+	if (json.isArray())	{
+		result.reserve(json.size());
+		for (auto &e : json) {
+			result.push_back(ParamFromJson(e));
+		}
+	}
+	return result;
+}
diff --git a/pglab/ParamListJson.h b/pglab/ParamListJson.h
new file mode 100644
index 0000000..c1140b4
--- /dev/null
+++ b/pglab/ParamListJson.h
@@ -0,0 +1,10 @@
+#ifndef PARAMLISTJSON_H
+#define PARAMLISTJSON_H
+
+#include "json/json.h"
+
+class ParamListModel;
+
+Json::Value ParamListModelToJson(const t_ParamList &list);
+
+#endif // PARAMLISTJSON_H
diff --git a/pglab/pglab.pro b/pglab/pglab.pro
index ee14146..1ae17f6 100644
--- a/pglab/pglab.pro
+++ b/pglab/pglab.pro
@@ -69,7 +69,8 @@ PgDatabaseCatalogue.cpp \
     CodeBuilderConfiguration.cpp \
     ResultTableModelUtil.cpp \
     BaseTableModel.cpp \
-    QueryParamListController.cpp
+    QueryParamListController.cpp \
+    ParamListJson.cpp
 
 HEADERS  += \
     QueryResultModel.h \
@@ -113,7 +114,8 @@ PgDatabaseCatalogue.h \
     CodeBuilderConfiguration.h \
     ResultTableModelUtil.h \
     BaseTableModel.h \
-    QueryParamListController.h
+    QueryParamListController.h \
+    ParamListJson.h
 
 FORMS    += mainwindow.ui \
     DatabaseWindow.ui \