Add possibility to use store options

Author: nalenz-objectbox

objectbox/lib/src/bindings/bindings.dart

@@ -29,6 +29,10 @@ class _ObjectBoxBindings {
 
     // object store management
     Pointer<Void> Function() obx_opt;
+    int Function(Pointer<Void> opt, Pointer<Uint8> dir) obx_opt_directory;
+    void Function(Pointer<Void> opt, int size_in_kb) obx_opt_max_db_size_in_kb;
+    void Function(Pointer<Void> opt, int file_mode) obx_opt_file_mode;
+    void Function(Pointer<Void> opt, int max_readers) obx_opt_max_readers;
     int Function(Pointer<Void> opt, Pointer<Void> model) obx_opt_model;
     Pointer<Void> Function(Pointer<Void> opt) obx_store_open;
     int Function(Pointer<Void> store) obx_store_close;
@@ -83,6 +87,10 @@ class _ObjectBoxBindings {
 
         // object store management
         obx_opt = objectbox.lookup<NativeFunction<obx_opt_native_t>>("obx_opt").asFunction();
+        obx_opt_directory = objectbox.lookup<NativeFunction<obx_opt_directory_native_t>>("obx_opt_directory").asFunction();
+        obx_opt_max_db_size_in_kb = objectbox.lookup<NativeFunction<obx_opt_max_db_size_in_kb_native_t>>("obx_opt_max_db_size_in_kb").asFunction();
+        obx_opt_file_mode = objectbox.lookup<NativeFunction<obx_opt_file_mode_native_t>>("obx_opt_file_mode").asFunction();
+        obx_opt_max_readers = objectbox.lookup<NativeFunction<obx_opt_max_readers_native_t>>("obx_opt_max_readers").asFunction();
         obx_opt_model = objectbox.lookup<NativeFunction<obx_opt_model_native_t>>("obx_opt_model").asFunction();
         obx_store_open = objectbox.lookup<NativeFunction<obx_store_open_native_t>>("obx_store_open").asFunction();
         obx_store_close = objectbox.lookup<NativeFunction<obx_store_close_native_t>>("obx_store_close").asFunction();

objectbox/lib/src/bindings/signatures.dart

@@ -22,6 +22,10 @@ typedef obx_model_last_entity_id_native_t = Int32 Function(Pointer<Void> model,
 
 // object store management
 typedef obx_opt_native_t = Pointer<Void> Function();
+typedef obx_opt_directory_native_t = Int32 Function(Pointer<Void> opt, Pointer<Uint8> dir);
+typedef obx_opt_max_db_size_in_kb_native_t = Void Function(Pointer<Void> opt, Int32 size_in_kb);
+typedef obx_opt_file_mode_native_t = Void Function(Pointer<Void> opt, Int32 file_mode);
+typedef obx_opt_max_readers_native_t = Void Function(Pointer<Void> opt, Int32 max_readers);
 typedef obx_opt_model_native_t = Int32 Function(Pointer<Void> opt, Pointer<Void> model);
 typedef obx_store_open_native_t = Pointer<Void> Function(Pointer<Void> opt);
 typedef obx_store_close_native_t = Int32 Function(Pointer<Void> store);

objectbox/lib/src/store.dart

@@ -2,20 +2,32 @@ import "dart:ffi";
 
 import "bindings/bindings.dart";
 import "bindings/helpers.dart";
+import "ffi/cstring.dart";
 
 import "model.dart";
 
 class Store {
     Pointer<Void> _objectboxStore;
     Map<Type, Map<String, dynamic>> _modelDefinitions = {};
 
-    Store(List<List<dynamic>> defs) {                        // TODO: allow setting options, e.g. database path
+    Store(List<List<dynamic>> defs, {String directory, int maxDBSizeInKB, int fileMode, int maxReaders}) {                        // TODO: allow setting options, e.g. database path
         defs.forEach((d) => _modelDefinitions[d[0]] = d[1]);
         var model = Model(defs.map((d) => d[1]["model"] as Map<String, dynamic>).toList());
 
         var opt = bindings.obx_opt();
         checkObxPtr(opt, "failed to create store options");
         checkObx(bindings.obx_opt_model(opt, model.ptr));
+        if(directory != null && directory.length != 0) {
+            var cStr = new CString(directory);
+            checkObx(bindings.obx_opt_directory(opt, cStr.ptr));
+            cStr.free();
+        }
+        if(maxDBSizeInKB != null && maxDBSizeInKB > 0)
+            bindings.obx_opt_max_db_size_in_kb(opt, maxDBSizeInKB);
+        if(fileMode != null && fileMode >= 0)
+            bindings.obx_opt_file_mode(opt, fileMode);
+        if(maxReaders != null && maxReaders > 0)
+            bindings.obx_opt_max_readers(opt, maxReaders);
         _objectboxStore = bindings.obx_store_open(opt);
         checkObxPtr(_objectboxStore, "failed to create store");
     }