Add support for container persistence

Generalize statements that were used for persisting objects to work for
both objects and containers. Implement a cache for container statements.

1 files changed, 155 insertions, 0 deletions

diff --git a/odb/mysql/container-statements.hxx b/odb/mysql/container-statements.hxx
new file mode 100644
index 0000000..322129f
--- /dev/null
+++ b/odb/mysql/container-statements.hxx
@@ -0,0 +1,155 @@
+// file      : odb/mysql/container-statements.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_MYSQL_CONTAINER_STATEMENTS_HXX
+#define ODB_MYSQL_CONTAINER_STATEMENTS_HXX
+
+#include <odb/pre.hxx>
+
+#include <odb/forward.hxx>
+#include <odb/traits.hxx>
+
+#include <odb/mysql/mysql.hxx>
+#include <odb/mysql/version.hxx>
+#include <odb/mysql/statement.hxx>
+
+#include <odb/mysql/details/export.hxx>
+
+namespace odb
+{
+  namespace mysql
+  {
+    class connection;
+
+    // Template argument is the generated container traits type.
+    //
+    template <typename T>
+    class container_statements
+    {
+    public:
+      typedef T traits;
+
+      typedef typename traits::data_image_type data_image_type;
+      typedef typename traits::cond_image_type cond_image_type;
+
+      typedef typename traits::functions_type functions_type;
+
+      typedef mysql::insert_statement insert_statement_type;
+      typedef mysql::select_statement select_statement_type;
+      typedef mysql::delete_statement delete_statement_type;
+
+      container_statements (connection&);
+
+      // Functions.
+      //
+      const functions_type&
+      functions () const
+      {
+        return functions_;
+      }
+
+      // Condition image.
+      //
+      cond_image_type&
+      cond_image ()
+      {
+        return cond_image_;
+      }
+
+      binding&
+      cond_image_binding ()
+      {
+        return cond_image_binding_;
+      }
+
+      // Data image.
+      //
+      data_image_type&
+      data_image ()
+      {
+        return data_image_;
+      }
+
+      binding&
+      data_image_binding ()
+      {
+        return data_image_binding_;
+      }
+
+      my_bool*
+      data_image_error ()
+      {
+        return data_image_error_;
+      }
+
+      //
+      // Statements.
+      //
+
+      insert_statement_type&
+      insert_one_statement ()
+      {
+        if (insert_one_ == 0)
+          insert_one_.reset (
+            new (details::shared) insert_statement_type (
+              conn_, traits::insert_one_statement, data_image_binding_));
+
+        return *insert_one_;
+      }
+
+      select_statement_type&
+      select_all_statement ()
+      {
+        if (select_all_ == 0)
+          select_all_.reset (
+            new (details::shared) select_statement_type (
+              conn_,
+              traits::select_all_statement,
+              cond_image_binding_,
+              data_image_binding_));
+
+        return *select_all_;
+      }
+
+      delete_statement_type&
+      delete_all_statement ()
+      {
+        if (delete_all_ == 0)
+          delete_all_.reset (
+            new (details::shared) delete_statement_type (
+              conn_, traits::delete_all_statement, cond_image_binding_));
+
+        return *delete_all_;
+      }
+
+    private:
+      container_statements (const container_statements&);
+      container_statements& operator= (const container_statements&);
+
+    private:
+      connection& conn_;
+      functions_type functions_;
+
+      cond_image_type cond_image_;
+      binding cond_image_binding_;
+      MYSQL_BIND cond_image_bind_[traits::cond_column_count];
+
+      data_image_type data_image_;
+      binding data_image_binding_;
+      MYSQL_BIND data_image_bind_[traits::data_column_count];
+      my_bool data_image_error_[traits::data_column_count];
+
+      details::shared_ptr<insert_statement_type> insert_one_;
+      details::shared_ptr<select_statement_type> select_all_;
+      details::shared_ptr<delete_statement_type> delete_all_;
+    };
+  }
+}
+
+#include <odb/mysql/container-statements.txx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_CONTAINER_STATEMENTS_HXX