Feature/1215

AGENTS.md

@@ -30,6 +30,13 @@ Never mark a task done while tests are failing.
 
 ## Implementation notes
 
+### v_object constructor conventions
+
+Types derived from `v_object` should follow the project-wide constructor pattern:
+
+- New durable instances are constructed from `Memspace &` plus any type-specific creation arguments.
+- Existing durable instances are reopened from `mptr` plus any type-specific runtime dependencies.
+
 ### C++ style
 
 - Use camelCase for local helper variables, lambdas, and method names in C++ code.

dbzero/dbzero/dbzero.py

@@ -10,7 +10,7 @@ def load_dynamic(name, path):
 
 def __bootstrap__():
     global __bootstrap__, __loader__, __file__
-    paths = [os.path.join(os.path.split(__file__)[0]), "/src/dev/build/release", "/usr/local/lib/python3/dist-packages/dbzero/"]
+    paths = [os.path.join(os.path.split(__file__)[0]), "/src/dev/build/", "/usr/local/lib/python3/dist-packages/dbzero/"]
     __file__ = None
     for path in paths:
         if os.path.isdir(path):

src/dbzero/object_model/class.hpp

@@ -6,4 +6,6 @@
 #include "class/Class.hpp"
 #include "class/ClassFactory.hpp"
 #include "class/Field.hpp"
-#include "class/Schema.hpp"
+#include "class/FieldIDMapper.hpp"
+#include "class/FieldMask.hpp"
+#include "class/Schema.hpp"

src/dbzero/object_model/class/FieldID.hpp

@@ -17,6 +17,10 @@ namespace db0::object_model
     public:
         static constexpr std::uint32_t MAX_INDEX = 0x40000 - 1; // max 2^22 fields
         static constexpr std::uint32_t MAX_OFFSET = 0x40 - 1;
+
+        static constexpr std::uint32_t getClusterSize() {
+            return MAX_OFFSET + 1;
+        }
 
         FieldID() = default;
         FieldID(std::pair<std::uint32_t, std::uint32_t> loc) {
@@ -88,4 +92,4 @@ namespace std
 
     std::ostream &operator<<(std::ostream &os, const db0::object_model::FieldID &field_id);
 
-}
+}