Add factories for exporting relation data

backend/data_export/pipeline/factories.py

@@ -12,6 +12,8 @@ from projects.models import (
 
 
 def create_repository(project):
+    if getattr(project, "use_relation", False):
+        return repositories.RelationExtractionRepository(project)
     mapping = {
         DOCUMENT_CLASSIFICATION: repositories.TextClassificationRepository,
         SEQUENCE_LABELING: repositories.SequenceLabelingRepository,
@@ -33,6 +35,7 @@ def create_writer(file_format: str) -> Type[writers.BaseWriter]:
         catalog.JSONL.name: writers.JSONLWriter,
         catalog.FastText.name: writers.FastTextWriter,
         catalog.IntentAndSlot.name: writers.IntentAndSlotWriter,
+        catalog.JSONLRelation.name: writers.EntityAndRelationWriter,
     }
     if file_format not in mapping:
         ValueError(f"Invalid format: {file_format}")