Abstract IResult interface for Result

This is to allow faking the result for testing the CrudModel.

pgsql/Pgsql_IResult.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "Pgsql_ResultConstIterator.h"
+
+namespace Pgsql {
+
+    class IResult {
+    public:
+
+        virtual operator bool() const = 0;
+
+        virtual int tuplesAffected() const = 0;
+        virtual int rows() const = 0;
+        virtual int cols() const = 0;
+
+        virtual const char* getColName(int idx) const = 0;
+
+        virtual const char* val(int col, int row) const = 0;
+        virtual Value get(int col, int row) const = 0;
+        virtual Oid type(int col) const = 0;
+        virtual bool null(int col, int row) const = 0;
+
+        ResultConstIterator begin() const
+        {
+            return ResultConstIterator(*this, 0);
+        }
+
+        ResultConstIterator end() const
+        {
+            return ResultConstIterator(*this, rows());
+        }
+    };
+
+}