Implement metadata filtering post retrieval

[rahulkrprajapati]

I meant is implement a metadata filter to filter based on this:

MetadataFilters(
                        filters=[
                            ExactMatchFilter(key="namespace", value=self.namespace)
                        ]
                    ),

    def process_streamlit_fetch_query_results(self, query="", verbose=False):
        try:
            query_bundle = QueryBundle(query_str=query)
            retrived_nodes = self.fusion_retriever.retrieve(query_bundle)
            recency_nodes = self.recency_postprocessor.postprocess_nodes(
                retrived_nodes, query_bundle=query_bundle
            )
            rerank_nodes = self.postprocessor.postprocess_nodes(
                nodes=recency_nodes, query_bundle=query_bundle
            )
            px.active_session().url
            return rerank_nodes
        except Exception as e:
            traceback.print_exc()
            raise Exception(f"An error occurred retrieving: {e}")