✨ feat(GraphRAG): enhance GraphRAG by graph community summary (#1801)

Co-authored-by: Florian <fanzhidongyzby@163.com>
Co-authored-by: KingSkyLi <15566300566@163.com>
Co-authored-by: aries_ckt <916701291@qq.com>
Co-authored-by: Fangyin Cheng <staneyffer@gmail.com>
Co-authored-by: yvonneyx <zhuyuxin0627@gmail.com>

dbgpt/rag/transformer/base.py

@@ -9,11 +9,27 @@ logger = logging.getLogger(__name__)
 class TransformerBase:
     """Transformer base class."""
 
+    @abstractmethod
+    def truncate(self):
+        """Truncate operation."""
+
+    @abstractmethod
+    def drop(self):
+        """Clean operation."""
+
 
 class EmbedderBase(TransformerBase, ABC):
     """Embedder base class."""
 
 
+class SummarizerBase(TransformerBase, ABC):
+    """Summarizer base class."""
+
+    @abstractmethod
+    async def summarize(self, **args) -> str:
+        """Summarize result."""
+
+
 class ExtractorBase(TransformerBase, ABC):
     """Extractor base class."""