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+// file      : odb/relational/pgsql/context.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license   : GNU GPL v3; see accompanying LICENSE file
+
+#ifndef ODB_RELATIONAL_PGSQL_CONTEXT_HXX
+#define ODB_RELATIONAL_PGSQL_CONTEXT_HXX
+
+#include <odb/relational/context.hxx>
+
+namespace relational
+{
+  namespace pgsql
+  {
+    struct sql_type
+    {
+      // Keep the order in each block of types.
+      //
+      enum core_type
+      {
+        // Integral types.
+        //
+        BOOLEAN,
+        SMALLINT,
+        INTEGER,
+        BIGINT,
+
+        // Float types.
+        //
+        FLOAT,
+        REAL,
+        DOUBLE,
+        DECIMAL,
+
+        // Data-time types.
+        //
+        DATE,
+        TIME,
+        TIMETZ,
+        TIMESTAMP,
+        TIMESTAMPTZ,
+
+        // String and binary types.
+        //
+        CHAR,
+        VARCHAR,
+        TEXT,
+        BYTEA,
+        BIT,
+        VARBIT,
+
+        // Other types.
+        //
+        UUID,
+
+        // Invalid type.
+        //
+        invalid
+      };
+
+      sql_type () : type (invalid), range (false) {}
+
+      core_type type;
+      bool range;
+
+      // VARBIT maximum length is 2^31 - 1 bit.
+      // String types can hold a maximum of 1GB of data.
+      //
+      unsigned int range_value;
+    };
+
+    class context: public virtual relational::context
+    {
+    // public:
+    //   sql_type const&
+    //   column_sql_type (semantics::data_member&,
+    //                    string const& key_prefix = string ());
+
+    // protected:
+    //   virtual bool
+    //   grow_impl (semantics::class_&);
+
+    //   virtual bool
+    //   grow_impl (semantics::data_member&);
+
+    //   virtual bool
+    //   grow_impl (semantics::data_member&, semantics::type&, string const&);
+
+    // protected:
+    //   virtual string
+    //   quote_id_impl (string const&) const;
+
+    // protected:
+    //   virtual string
+    //   database_type_impl (semantics::type&,
+    //                       semantics::names*,
+    //                       semantics::context&,
+    //                       column_type_flags);
+
+    public:
+      virtual
+      ~context ();
+
+      context ();
+
+      // context (std::ostream&, semantics::unit&, options_type const&);
+
+      static context&
+      current ()
+      {
+        return *current_;
+      }
+
+    private:
+      static context* current_;
+
+    private:
+      struct data: base_context::data
+      {
+        data (std::ostream& os): base_context::data (os) {}
+      };
+      data* data_;
+    };
+  }
+}
+
+#endif // ODB_RELATIONAL_PGSQL_CONTEXT_HXX