Add some core objects impl

src/knowledge/core_object/document_object.py

@@ -0,0 +1,57 @@
+from ..object import KnowledgeObject
+from ..data import ChunkList, ChunkListWriter
+from ..object import ObjectType
+
+
+# desc
+#   meta
+#   hash: "file-hash",
+#   tags: {}
+# body
+#   chunk_list: [chunk_id, chunk_id, ...]
+
+
+class DocumentObject(KnowledgeObject):
+    def __init__(self, meta: dict, tags: dict, chunk_list: ChunkList):
+        desc = dict()
+        body = dict()
+        desc["meta"] = meta
+        desc["tags"] = tags
+        desc["hash"] = chunk_list.hash.to_base58()
+        body["chunk_list"] = chunk_list.chunk_list
+
+        super().__init__(ObjectType.Document, desc, body)
+
+    def get_meta(self):
+        return self.desc["meta"]
+
+    def get_tags(self):
+        return self.desc["tags"]
+
+    def get_hash(self):
+        return self.desc["hash"]
+
+    def get_chunk_list(self):
+        return self.body["chunk_list"]
+
+
+class DocumentObjectBuilder:
+    def __init__(self, meta: dict, tags: dict, text: str):
+        self.meta = meta
+        self.tags = tags
+        self.text = text
+
+    def set_meta(self, meta: dict):
+        self.meta = meta
+        return self
+
+    def set_text(self, text: str):
+        self.text = text
+        return self
+
+    def build(self) -> DocumentObject:
+        chunk_list = ChunkListWriter.create_chunk_list_from_text(
+            self.text,
+            1024 * 4,
+        )
+        return DocumentObject(self.meta, self.tags, chunk_list)