From 3ee1f474f72d093e27974e040372c53342702b12 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 6 Sep 2011 14:58:16 +0200
Subject: Allow select statement without parameters

---
 odb/pgsql/statement.cxx | 30 +++++++++++++++++++++++-------
 odb/pgsql/statement.hxx |  7 ++++++-
 2 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/odb/pgsql/statement.cxx b/odb/pgsql/statement.cxx
index 7e5b5aa..c839e92 100644
--- a/odb/pgsql/statement.cxx
+++ b/odb/pgsql/statement.cxx
@@ -314,7 +314,7 @@ namespace odb
                       binding& data)
         : statement (conn, name, stmt, types, types_count),
           cond_ (&cond),
-          native_cond_ (native_cond),
+          native_cond_ (&native_cond),
           data_ (data),
           row_count_ (0),
           current_row_ (0)
@@ -331,7 +331,21 @@ namespace odb
                       binding& data)
         : statement (conn, name, stmt, types, types_count),
           cond_ (0),
-          native_cond_ (native_cond),
+          native_cond_ (&native_cond),
+          data_ (data),
+          row_count_ (0),
+          current_row_ (0)
+    {
+    }
+
+    select_statement::
+    select_statement (connection& conn,
+                      const std::string& name,
+                      const std::string& stmt,
+                      binding& data)
+        : statement (conn, name, stmt, 0, 0),
+          cond_ (0),
+          native_cond_ (0),
           data_ (data),
           row_count_ (0),
           current_row_ (0)
@@ -344,15 +358,17 @@ namespace odb
       result_.reset ();
 
       if (cond_ != 0)
-        bind_param (native_cond_, *cond_);
+        bind_param (*native_cond_, *cond_);
+
+      bool in (native_cond_ != 0);
 
       result_.reset (
         PQexecPrepared (conn_.handle (),
                         name_.c_str (),
-                        native_cond_.count,
-                        native_cond_.values,
-                        native_cond_.lengths,
-                        native_cond_.formats,
+                        in ? native_cond_->count : 0,
+                        in ? native_cond_->values : 0,
+                        in ? native_cond_->lengths : 0,
+                        in ? native_cond_->formats : 0,
                         1));
 
       if (!is_good_result (result_))
diff --git a/odb/pgsql/statement.hxx b/odb/pgsql/statement.hxx
index 6e5484a..d7cf6dc 100644
--- a/odb/pgsql/statement.hxx
+++ b/odb/pgsql/statement.hxx
@@ -90,6 +90,11 @@ namespace odb
                         native_binding& native_cond,
                         binding& data);
 
+      select_statement (connection& conn,
+                        const std::string& name,
+                        const std::string& stmt,
+                        binding& data);
+
       // Common select interface expected by the generated code.
       //
     public:
@@ -154,7 +159,7 @@ namespace odb
 
     private:
       binding* cond_;
-      native_binding& native_cond_;
+      native_binding* native_cond_;
 
       binding& data_;
 
-- 
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