Implement SQLite incremental BLOB/TEXT I/O

1 files changed, 70 insertions, 0 deletions

diff --git a/odb/sqlite/blob.hxx b/odb/sqlite/blob.hxx
new file mode 100644
index 0000000..eccb3ab
--- /dev/null
+++ b/odb/sqlite/blob.hxx
@@ -0,0 +1,70 @@
+// file      : odb/sqlite/blob.hxx
+// copyright : Copyright (c) 2005-2015 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_SQLITE_BLOB_HXX
+#define ODB_SQLITE_BLOB_HXX
+
+#include <odb/pre.hxx>
+
+#include <string>
+#include <cstddef> // std::size_t
+
+// Carefully allow this header to be included into the ODB compilation.
+//
+#ifndef ODB_COMPILER
+#  include <odb/sqlite/forward.hxx>
+#  include <odb/sqlite/details/export.hxx>
+#endif
+
+namespace odb
+{
+  namespace sqlite
+  {
+#ifdef ODB_COMPILER
+    #pragma db sqlite:type("BLOB STREAM")
+    class blob
+#else
+    class LIBODB_SQLITE_EXPORT blob
+#endif
+    {
+    public:
+      // BLOB size to provision for. Set before calling persist() or update().
+      //
+      explicit
+      blob (std::size_t size = 0): size_ (size) {}
+
+      std::size_t size () const {return size_;}
+      void size (std::size_t s) {size_ = s;}
+
+      const std::string& db () const {return db_;}
+      const std::string& table () const {return table_;}
+      const std::string& column () const {return column_;}
+      long long rowid () const {return rowid_;}
+
+      void
+      clear ()
+      {
+        size_ = 0;
+        db_.clear ();
+        table_.clear ();
+        column_.clear ();
+        rowid_ = 0;
+      }
+
+    private:
+#ifndef ODB_COMPILER
+      friend struct default_value_traits<blob, id_blob_stream>;
+#endif
+      std::size_t size_;
+      mutable std::string db_;
+      mutable std::string table_;
+      mutable std::string column_;
+      mutable long long rowid_;
+    };
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_SQLITE_BLOB_HXX