From 3e23b0478aa8f426e0443d2c4c0189b4da0e6198 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 2 Sep 2013 08:33:25 +0200
Subject: Support for versioning simple value in object

---
 odb/relational/pgsql/source.cxx | 35 ++++++++++++++++++++++++++++++++---
 1 file changed, 32 insertions(+), 3 deletions(-)

(limited to 'odb/relational/pgsql/source.cxx')

diff --git a/odb/relational/pgsql/source.cxx b/odb/relational/pgsql/source.cxx
index 7c5f2f6..a7834a2 100644
--- a/odb/relational/pgsql/source.cxx
+++ b/odb/relational/pgsql/source.cxx
@@ -304,15 +304,44 @@ namespace relational
           e = ostr.str ();
 
           if (var_override_.empty ())
+          {
             os << "// " << mi.m.name () << endl
                << "//" << endl;
 
+            // If the member is soft- added or deleted, check the version.
+            //
+            unsigned long long av (added (mi.m));
+            unsigned long long dv (deleted (mi.m));
+            if (av != 0 || dv != 0)
+            {
+              os << "if (";
+
+              if (av != 0)
+                os << "svm >= schema_version_migration (" << av << "ULL, true)";
+
+              if (av != 0 && dv != 0)
+                os << " &&" << endl;
+
+              if (dv != 0)
+                os << "svm <= schema_version_migration (" << dv << "ULL, true)";
+
+              os << ")"
+                 << "{";
+            }
+          }
+
           return true;
         }
 
         virtual void
         post (member_info& mi)
         {
+          if (var_override_.empty ())
+          {
+            if (added (mi.m) || deleted (mi.m))
+              os << "}";
+          }
+
           if (semantics::class_* c = composite (mi.t))
             index_ += column_count (*c).total;
           else
@@ -324,10 +353,10 @@ namespace relational
         {
           os << "if (composite_value_traits< " << mi.fq_type () <<
             ", id_pgsql >::grow (" << endl
-             << "i." << mi.var << "value, t + " << index_ << "UL))"
-             << "{"
+             << "i." << mi.var << "value, t + " << index_ << "UL" <<
+            (versioned (*composite (mi.t)) ? ", svm" : "") << "))" << endl
              << "grew = true;"
-             << "}";
+             << endl;
         }
 
         virtual void
-- 
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