serialize/deserialize

examples/articles.py

@@ -53,6 +53,7 @@ recipe.add_transform(
     "article",
     extract_npr_article,
 )
+recipe.add_transform("archived_article")
 
 
 npr_examples = [

examples/fruits.py

@@ -1,13 +1,24 @@
 from beakers.recipe import Recipe
+import pydantic
 
-recipe = Recipe("example01")
+
-words_beaker = recipe.add_beaker("words", temp=True)
+class Word(pydantic.BaseModel):
-recipe.add_beaker("fruits")
+    word: str
-recipe.add_beaker("other")
+
-recipe.add_beaker("sentences")
+
-recipe.add_conditional(
+class ClassifiedWord(pydantic.BaseModel):
-    "words",
+    normalized_word: str
-    lambda x: x["word"]
+    is_fruit: bool
+
+
+class Sentence(pydantic.BaseModel):
+    sentence: list[str]
+
+
+def word_classifier(item) -> ClassifiedWord:
+    return ClassifiedWord(
+        normalized_word=item.word.lower(),
+        is_fruit=item.word.lower()
         in (
             "apple",
             "banana",
@@ -19,10 +30,28 @@ recipe.add_conditional(
             "pear",
             "raspberry",
         ),
+    )
+
+
+recipe = Recipe("fruits-example")
+recipe.add_beaker("word", Word)
+recipe.add_beaker("classified_word", ClassifiedWord)
+recipe.add_beaker("sentence", Sentence)
+recipe.add_transform("word", "classified_word", word_classifier)
+recipe.add_conditional(
+    "classified_word",
+    lambda cw: cw.is_fruit,
     "fruits",
-    "other",
 )
-recipe.add_transform("fruits", "sentences", lambda x: f"I like to eat {x['word']}")
+recipe.add_transform("fruits", "sentence", lambda x: f"I love a fresh {x['word']}")
-recipe.add_transform(
+
-    "other", "sentences", lambda x: f"I'm not so sure about {x['word']}"
+recipe.add_seed(
+    "word",
+    [
+        Word(word="apple"),
+        Word(word="banana"),
+        Word(word="hammer"),
+        Word(word="orange"),
+        Word(word="egg"),
+    ],
 )

src/beakers/beakers.py

@@ -4,13 +4,31 @@ import sqlite3
 import uuid
 
 
+class DataObject:
+    def __init__(self, id: str | None = None):
+        self._id = id if id else str(uuid.uuid4())
+        self._data = {}
+
+    def __getattr__(self, name):
+        return self._data[name]
+
+    def __setattr__(self, name, value):
+        if name.startswith("_"):
+            super().__setattr__(name, value)
+        elif name not in self._data:
+            self._data[name] = value
+        else:
+            raise AttributeError(f"DataObject attribute {name} already exists")
+
+
 class Beaker(abc.ABC):
-    def __init__(self, name: str, recipe):
+    def __init__(self, name: str, model: type, recipe: "Recipe"):
         self.name = name
+        self.model = model
         self.recipe = recipe
 
     def __repr__(self):
-        return f"Beaker({self.name})"
+        return f"Beaker({self.name}, {self.model.__name__})"
 
     @abc.abstractmethod
     def items(self):
@@ -21,23 +39,29 @@ class Beaker(abc.ABC):
         pass
 
     @abc.abstractmethod
-    def add_item(self, item: dict, id: str | None = None) -> None:
+    def add_item(self, item: "T", id: str | None = None) -> None:
         pass
 
     @abc.abstractmethod
     def reset(self):
         pass
 
+    def add_items(self, items: list["T"]) -> None:
+        for item in items:
+            self.add_item(item)
+
 
 class TempBeaker(Beaker):
-    def __init__(self, name: str, recipe):
+    def __init__(self, name: str, model: type, recipe: "Recipe"):
-        super().__init__(name, recipe)
+        super().__init__(name, model, recipe)
         self._items = []
 
     def __len__(self):
         return len(self._items)
 
-    def add_item(self, item: dict, id=None) -> None:
+    def add_item(self, item: "T", id=None) -> None:
+        if id is None:
+            id = str(uuid.uuid1())
         self._items.append((id, item))
 
     def items(self):
@@ -48,8 +72,8 @@ class TempBeaker(Beaker):
 
 
 class SqliteBeaker(Beaker):
-    def __init__(self, name: str, recipe):
+    def __init__(self, name: str, model: type, recipe: "Recipe"):
-        super().__init__(name, recipe)
+        super().__init__(name, model, recipe)
         # create table if it doesn't exist
         self.cursor = self.recipe.db.cursor()
         self.cursor.row_factory = sqlite3.Row
@@ -61,18 +85,19 @@ class SqliteBeaker(Beaker):
         self.cursor.execute(f"SELECT uuid, data FROM {self.name}")
         data = self.cursor.fetchall()
         for item in data:
-            yield item["uuid"], json.loads(item["data"])
+            yield item["uuid"], self.model(**json.loads(item["data"]))
 
     def __len__(self):
         self.cursor.execute(f"SELECT COUNT(*) FROM {self.name}")
         return self.cursor.fetchone()[0]
 
-    def add_item(self, item: dict, id: str | None = None) -> None:
+    def add_item(self, item: "T", id: str | None = None) -> None:
         if id is None:
             id = str(uuid.uuid1())
+            print("UUID", id, item)
         self.cursor.execute(
             f"INSERT INTO {self.name} (uuid, data) VALUES (?, ?)",
-            (id, json.dumps(item)),
+            (id, item.model_dump_json()),
         )
         self.recipe.db.commit()
 

src/beakers/recipe.py

@@ -54,9 +54,9 @@ class Recipe:
     def add_beaker(self, name: str, datatype: type | None) -> Beaker:
         self.graph.add_node(name, datatype=datatype)
         if datatype is None:
-            self.beakers[name] = TempBeaker(name, self)
+            self.beakers[name] = TempBeaker(name, datatype, self)
         else:
-            self.beakers[name] = SqliteBeaker(name, self)
+            self.beakers[name] = SqliteBeaker(name, datatype, self)
         return self.beakers[name]
 
     def add_transform(
@@ -124,7 +124,7 @@ class Recipe:
         log.info("process_seeds", recipe=self.name)
         for beaker_name, seeds in self.seeds.items():
             for seed in seeds:
-                self.beakers[beaker_name].add_item(seed)
+                self.beakers[beaker_name].add_items(seed)
 
     def get_metadata(self, table_name) -> dict:
         cursor = self.db.cursor()