feat(low-code): add items mappings to dynamic schemas

airbyte_cdk/sources/declarative/declarative_component_schema.yaml

@@ -1800,6 +1800,19 @@ definitions:
       $parameters:
         type: object
         additionalProperties: true
+  ComplexFieldType:
+    title: Schema Field Type
+    description: (This component is experimental. Use at your own risk.) Represents a complex field type.
+    type: object
+    required:
+      - field_type
+    properties:
+      field_type:
+        type: string
+      items:
+        anyOf:
+          - type: string
+          - "$ref": "#/definitions/ComplexFieldType"
   TypesMap:
     title: Types Map
     description: (This component is experimental. Use at your own risk.) Represents a mapping between a current type and its corresponding target type.
@@ -1814,6 +1827,7 @@ definitions:
           - type: array
             items:
               type: string
+          - "$ref": "#/definitions/ComplexFieldType"
       current_type:
         anyOf:
           - type: string

airbyte_cdk/sources/declarative/models/declarative_component_schema.py

@@ -736,8 +736,13 @@ class HttpResponseFilter(BaseModel):
     parameters: Optional[Dict[str, Any]] = Field(None, alias="$parameters")
 
 
+class ComplexFieldType(BaseModel):
+    field_type: str
+    items: Optional[Union[str, ComplexFieldType]] = None
+
+
 class TypesMap(BaseModel):
-    target_type: Union[str, List[str]]
+    target_type: Union[str, List[str], ComplexFieldType]
     current_type: Union[str, List[str]]
     condition: Optional[str] = None
 
@@ -2260,6 +2265,7 @@ class DynamicDeclarativeStream(BaseModel):
     )
 
 
+ComplexFieldType.update_forward_refs()
 CompositeErrorHandler.update_forward_refs()
 DeclarativeSource1.update_forward_refs()
 DeclarativeSource2.update_forward_refs()

airbyte_cdk/sources/declarative/parsers/model_to_component_factory.py

@@ -133,6 +133,9 @@
 from airbyte_cdk.sources.declarative.models.declarative_component_schema import (
     CheckStream as CheckStreamModel,
 )
+from airbyte_cdk.sources.declarative.models.declarative_component_schema import (
+    ComplexFieldType as ComplexFieldTypeModel,
+)
 from airbyte_cdk.sources.declarative.models.declarative_component_schema import (
     ComponentMappingDefinition as ComponentMappingDefinitionModel,
 )
@@ -429,6 +432,7 @@
     SimpleRetrieverTestReadDecorator,
 )
 from airbyte_cdk.sources.declarative.schema import (
+    ComplexFieldType,
     DefaultSchemaLoader,
     DynamicSchemaLoader,
     InlineSchemaLoader,
@@ -572,6 +576,7 @@ def _init_mappings(self) -> None:
             DynamicSchemaLoaderModel: self.create_dynamic_schema_loader,
             SchemaTypeIdentifierModel: self.create_schema_type_identifier,
             TypesMapModel: self.create_types_map,
+            ComplexFieldTypeModel: self.create_complex_field_type,
             JwtAuthenticatorModel: self.create_jwt_authenticator,
             LegacyToPerPartitionStateMigrationModel: self.create_legacy_to_per_partition_state_migration,
             ListPartitionRouterModel: self.create_list_partition_router,
@@ -1894,10 +1899,26 @@ def create_inline_schema_loader(
     ) -> InlineSchemaLoader:
         return InlineSchemaLoader(schema=model.schema_ or {}, parameters={})
 
-    @staticmethod
-    def create_types_map(model: TypesMapModel, **kwargs: Any) -> TypesMap:
+    def create_complex_field_type(
+        self, model: ComplexFieldTypeModel, config: Config, **kwargs: Any
+    ) -> ComplexFieldType:
+        items = (
+            self._create_component_from_model(model=model.items, config=config)
+            if isinstance(model.items, ComplexFieldTypeModel)
+            else model.items
+        )
+
+        return ComplexFieldType(field_type=model.field_type, items=items)
+
+    def create_types_map(self, model: TypesMapModel, config: Config, **kwargs: Any) -> TypesMap:
+        target_type = (
+            self._create_component_from_model(model=model.target_type, config=config)
+            if isinstance(model.target_type, ComplexFieldTypeModel)
+            else model.target_type
+        )
+
         return TypesMap(
-            target_type=model.target_type,
+            target_type=target_type,
             current_type=model.current_type,
             condition=model.condition if model.condition is not None else "True",
         )

airbyte_cdk/sources/declarative/schema/__init__.py

@@ -4,6 +4,7 @@
 
 from airbyte_cdk.sources.declarative.schema.default_schema_loader import DefaultSchemaLoader
 from airbyte_cdk.sources.declarative.schema.dynamic_schema_loader import (
+    ComplexFieldType,
     DynamicSchemaLoader,
     SchemaTypeIdentifier,
     TypesMap,
@@ -18,6 +19,7 @@
     "SchemaLoader",
     "InlineSchemaLoader",
     "DynamicSchemaLoader",
+    "ComplexFieldType",
     "TypesMap",
     "SchemaTypeIdentifier",
 ]

airbyte_cdk/sources/declarative/schema/dynamic_schema_loader.py

@@ -18,7 +18,7 @@
 from airbyte_cdk.sources.source import ExperimentalClassWarning
 from airbyte_cdk.sources.types import Config, StreamSlice, StreamState
 
-AIRBYTE_DATA_TYPES: Mapping[str, Mapping[str, Any]] = {
+AIRBYTE_DATA_TYPES: Mapping[str, MutableMapping[str, Any]] = {
     "string": {"type": ["null", "string"]},
     "boolean": {"type": ["null", "boolean"]},
     "date": {"type": ["null", "string"], "format": "date"},
@@ -45,14 +45,33 @@
 }
 
 
+@deprecated("This class is experimental. Use at your own risk.", category=ExperimentalClassWarning)
+@dataclass(frozen=True)
+class ComplexFieldType:
+    """
+    Identifies complex field type
+    """
+
+    field_type: str
+    items: Optional[Union[str, "ComplexFieldType"]] = None
+
+    def __post_init__(self) -> None:
+        """
+        Enforces that `items` is only used when `field_type` is a array
+        """
+        # `items_type` is valid only for array target types
+        if self.items and self.field_type != "array":
+            raise ValueError("'items' can only be used when 'field_type' is an array.")
+
+
 @deprecated("This class is experimental. Use at your own risk.", category=ExperimentalClassWarning)
 @dataclass(frozen=True)
 class TypesMap:
     """
     Represents a mapping between a current type and its corresponding target type.
     """
 
-    target_type: Union[List[str], str]
+    target_type: Union[List[str], str, ComplexFieldType]
     current_type: Union[List[str], str]
     condition: Optional[str]
 
@@ -135,8 +154,9 @@ def get_json_schema(self) -> Mapping[str, Any]:
         transformed_properties = self._transform(properties, {})
 
         return {
-            "$schema": "http://json-schema.org/draft-07/schema#",
+            "$schema": "https://json-schema.org/draft-07/schema#",
             "type": "object",
+            "additionalProperties": True,
             "properties": transformed_properties,
         }
 
@@ -188,18 +208,33 @@ def _get_type(
             first_type = self._get_airbyte_type(mapped_field_type[0])
             second_type = self._get_airbyte_type(mapped_field_type[1])
             return {"oneOf": [first_type, second_type]}
+
         elif isinstance(mapped_field_type, str):
             return self._get_airbyte_type(mapped_field_type)
+
+        elif isinstance(mapped_field_type, ComplexFieldType):
+            return self._resolve_complex_type(mapped_field_type)
+
         else:
             raise ValueError(
                 f"Invalid data type. Available string or two items list of string. Got {mapped_field_type}."
             )
 
+    def _resolve_complex_type(self, complex_type: ComplexFieldType) -> Mapping[str, Any]:
+        if not complex_type.items:
+            return self._get_airbyte_type(complex_type.field_type)
+
+        field_type = self._get_airbyte_type(complex_type.field_type)
+        field_type["items"] = self._get_airbyte_type(complex_type.items) if isinstance(complex_type.items, str) else self._resolve_complex_type(
+            complex_type.items)
+
+        return field_type
+
     def _replace_type_if_not_valid(
         self,
         field_type: Union[List[str], str],
         raw_schema: MutableMapping[str, Any],
-    ) -> Union[List[str], str]:
+    ) -> Union[List[str], str, ComplexFieldType]:
         """
         Replaces a field type if it matches a type mapping in `types_map`.
         """
@@ -216,7 +251,7 @@ def _replace_type_if_not_valid(
         return field_type
 
     @staticmethod
-    def _get_airbyte_type(field_type: str) -> Mapping[str, Any]:
+    def _get_airbyte_type(field_type: str) -> MutableMapping[str, Any]:
         """
         Maps a field type to its corresponding Airbyte type definition.
         """

unit_tests/sources/declarative/schema/test_dynamic_schema_loader.py

@@ -84,7 +84,14 @@
                     "schema_pointer": ["fields"],
                     "key_pointer": ["name"],
                     "type_pointer": ["type"],
-                    "types_mapping": [{"target_type": "string", "current_type": "singleLineText"}],
+                    "types_mapping": [
+                        {"target_type": "string", "current_type": "singleLineText"},
+                        {
+                            "target_type": {"field_type": "array", "items": {"field_type": "array", "items": "integer"}},
+                            "current_type": "formula",
+                            "condition": "{{ raw_schema['result']['type'] == 'customInteger' }}",
+                        },
+                    ],
                 },
             },
         },
@@ -314,7 +321,8 @@ def test_dynamic_schema_loader_with_type_conditions():
     ]["types_mapping"].append({"target_type": "array", "current_type": "formula"})
 
     expected_schema = {
-        "$schema": "http://json-schema.org/draft-07/schema#",
+        "$schema": "https://json-schema.org/draft-07/schema#",
+        "additionalProperties": True,
         "type": "object",
         "properties": {
             "id": {"type": ["null", "integer"]},
@@ -324,6 +332,7 @@ def test_dynamic_schema_loader_with_type_conditions():
             "currency": {"type": ["null", "number"]},
             "salary": {"type": ["null", "number"]},
             "working_days": {"type": ["null", "array"]},
+            "avg_salary": {"type": ["null", "array"], "items": {"type": ["null", "array"], "items": {"type": ["null", "integer"]}}},
         },
     }
     source = ConcurrentDeclarativeSource(
@@ -365,6 +374,12 @@ def test_dynamic_schema_loader_with_type_conditions():
                             {"name": "FirstName", "type": "string"},
                             {"name": "Description", "type": "singleLineText"},
                             {"name": "Salary", "type": "formula", "result": {"type": "number"}},
+                            {
+                                "name": "AvgSalary",
+                                "type": "formula",
+                                "result": {"type": "customInteger"},
+                            },
+                            {"name": "Currency", "type": "formula", "result": {"type": "currency"}},
                             {"name": "Currency", "type": "formula", "result": {"type": "currency"}},
                             {"name": "WorkingDays", "type": "formula"},
                         ]