businessLogic: refactored repositories

src/participation-hub/business-logic-microservice/app/db/entities/table.py

+from typing import Dict
+
+class Table:
+    def __init__(self, name):
+        self.name = name
+    
+    def to_serializable_dict(self) -> Dict:
+        return {"name": self.name}
+    
+    @staticmethod
+    def from_serializable_dict(data: Dict):
+        return Table(data["name"])
\ No newline at end of file

src/participation-hub/business-logic-microservice/app/db/layer_repository.py

+# global imports (dont't worry, red is normal)
+import network_constants as netconst
+from database.MongoRepositoryBase import MongoRepositoryBase
+from db.entities.table import Table
+
+import pymongo
+import json
+from typing import List, Dict
+
+class TableRepository(MongoRepositoryBase):
+    '''This is a repository for MongoDb.'''
+
+    def __init__(self):
+        super().__init__(netconst.BUSINESS_LOGIC_DB_HOSTNAME,
+                         netconst.BUSINESS_LOGIC_DB_PORT,
+                         'rest-gateway-db')
+
+        self._table_collection = 'tables'
+
+    def add_one(self, table: Table):
+        super().insert_entry(self._table_collection, table.to_serializable_dict())
+    
+    
\ No newline at end of file

src/participation-hub/business-logic-microservice/app/db/repository.py

@@ -3,7 +3,6 @@ import network_constants as netconst
 from database.MongoRepositoryBase import MongoRepositoryBase
 from db.entities.layer_adapter import LayerAdapter
 from db.entities.use_case import UseCase
-from db.entities.schema import Schema
 
 import pymongo
 import json
@@ -19,72 +18,35 @@ class Repository(MongoRepositoryBase):
 
         self._adapter_collection = 'layer_adapters'
         self._use_case_collection = 'use_cases'
-        self._schema_collection = 'schemas'
     
-    def add_schema(self, schema: Schema):
-        self.put_use_case(schema.use_case)
-        super().insert_entry(self._schema_collection, schema.to_serializable_dict())
+    def all(self) -> List[Dict]:
+        result = super().get_entries(self._adapter_collection, projection={'_id': False})
 
-    def all_schemas(self) -> List[Schema]:
-        result = super().get_entries(self._schema_collection, projection={'_id': False})
-        return [Schema.from_serializable_dict(row) for row in list(result)]
+        return [LayerAdapter.from_serializable_dict(row) for row in list(result)]
     
-    def schema_for_use_case(self, use_case: str) -> List[Dict]:
-        result = super().get_entries(self._schema_collection, projection={'_id': False}, selection={"use_case": use_case})
+    def all_for_use_case(self, use_case: str) -> List[Dict]:
+        result = super().get_entries(self._adapter_collection, projection={'_id': False}, selection={"use_case": use_case})
 
-        result = list(result)
-        if len(result) > 1:
-            raise ValueError("No more than 1 Schema allowed per use-case!")
+        return [LayerAdapter.from_serializable_dict(row) for row in list(result)]
+
+    def one(self, name : str, use_case: str) -> LayerAdapter:
+        result = list(super().get_entries(self._adapter_collection, selection={"name": name, "use_case": use_case}))
 
         if len(result) == 1:
-            return Schema.from_serializable_dict(result[0])
+            return LayerAdapter.from_serializable_dict(result[0])
         
         return None
 
-    def delete_schema_with_use_case(self, use_case: str): 
-        collection = self._database[self._schema_collection]
-        collection.delete_one({"use_case": use_case})
-
-    def delete_all_schemas(self):
-        collection = self._database[self._schema_collection]
-        collection.delete_many({})
-
-    def update_schema(self, schema: Schema):
-        collection = self._database[self._schema_collection]
-        collection.update_one({"use_case": schema.use_case}, {"$set": schema.to_serializable_dict()})
-
-    def delete_all_use_cases_with_name(self, name: str):
-        collection = self._database[self._use_case_collection]
-        collection.delete_many({"name": name})
-
-    def delete_all_layers(self):
+    def delete_all(self):
         collection = self._database[self._adapter_collection]
         collection.delete_many({})
 
-    def delete_all_use_cases(self):
-        collection = self._database[self._use_case_collection]
-        collection.delete_many({})
-
-    def all_use_cases(self) -> List[UseCase]:
-        dicts = list(super().get_entries(self._use_case_collection, projection={'_id': False}))
-
-        return [UseCase.from_serializable_dict(d) for d in dicts]
-
-    def put_use_case(self, use_case_name: str):
-        use_cases = self.all_use_cases()
-
-        existing_use_cases = list(filter(lambda use_case: use_case.name == use_case_name, use_cases))
-
-        if len(existing_use_cases) == 0:
-            use_case = UseCase(use_case_name)
-            super().insert_entry(self._use_case_collection, use_case.to_serializable_dict())
-
     def add(self, adapter : LayerAdapter):
-        self.put_use_case(adapter.use_case)
         super().insert_entry(self._adapter_collection, adapter.to_serializable_dict())
     
-    def one_by_name_and_usecase(self, name : str, use_case: str) -> LayerAdapter:
-        return list(super().get_entries(self._adapter_collection, selection={"name": name, "use_case": use_case}))
+    def add_empty(self, name: str, use_case: str):
+        adapter = LayerAdapter(name, use_case, [], [])
+        super().insert_entry(self._adapter_collection, adapter.to_serializable_dict())
 
     def update_use_case(self, adapter : LayerAdapter, use_case: str):
         collection = self._database[self._adapter_collection]
@@ -97,13 +59,3 @@ class Repository(MongoRepositoryBase):
     def delete_all_with_name_and_use_case(self, name: str, use_case: str):
         collection = self._database[self._adapter_collection]
         collection.delete_many({"name": name, "use_case": use_case})
\ No newline at end of file
-
-    def all(self) -> List[Dict]:
-        result = super().get_entries(self._adapter_collection, projection={'_id': False})
-
-        return list(result)
-    
-    def all_for_use_case(self, use_case: str) -> List[Dict]:
-        result = super().get_entries(self._adapter_collection, projection={'_id': False}, selection={"use_case": use_case})
-
-        return list(result)
\ No newline at end of file

src/participation-hub/business-logic-microservice/app/db/schema_repository.py

+# global imports (dont't worry, red is normal)
+import network_constants as netconst
+from database.MongoRepositoryBase import MongoRepositoryBase
+from db.entities.schema import Schema
+
+import pymongo
+import json
+from typing import List, Dict
+
+class SchemaRepository(MongoRepositoryBase):
+    '''This is a repository for MongoDb.'''
+
+    def __init__(self):
+        super().__init__(netconst.BUSINESS_LOGIC_DB_HOSTNAME,
+                         netconst.BUSINESS_LOGIC_DB_PORT,
+                         'rest-gateway-db')
+
+        self._schema_collection = 'schemas'
+    
+    def all(self) -> List[Schema]:
+        result = super().get_entries(self._schema_collection, projection={'_id': False})
+        return [Schema.from_serializable_dict(row) for row in list(result)]
+
+    def add(self, schema: Schema):
+        self.put_use_case(schema.use_case)
+        super().insert_entry(self._schema_collection, schema.to_serializable_dict())
+
+    def get_for_use_case(self, use_case: str) -> Schema:
+        result = super().get_entries(self._schema_collection, projection={'_id': False}, selection={"use_case": use_case})
+
+        result = list(result)
+        if len(result) > 1:
+            raise ValueError("No more than 1 Schema allowed per use-case!")
+
+        if len(result) == 1:
+            return Schema.from_serializable_dict(result[0])
+        
+        return None
+    
+    def put(self, use_case: str):
+        schema = self.get_for_use_case(use_case)
+
+        if schema == None:
+            schema = Schema(use_case, mappings={})
+            self.add(schema)
+        
+        return schema
+    
+    def delete_for_use_case(self, use_case: str): 
+        collection = self._database[self._schema_collection]
+        collection.delete_one({"use_case": use_case})
+
+    def delete_all(self):
+        collection = self._database[self._schema_collection]
+        collection.delete_many({})
+
+    def update(self, schema: Schema):
+        collection = self._database[self._schema_collection]
+        collection.update_one({"use_case": schema.use_case}, {"$set": schema.to_serializable_dict()})

src/participation-hub/business-logic-microservice/app/db/use_case_repository.py

+# global imports (dont't worry, red is normal)
+import network_constants as netconst
+from database.MongoRepositoryBase import MongoRepositoryBase
+from db.entities.use_case import UseCase
+
+import pymongo
+import json
+from typing import List, Dict
+
+class UseCaseRepository(MongoRepositoryBase):
+    '''This is a repository for MongoDb.'''
+
+    def __init__(self):
+        super().__init__(netconst.BUSINESS_LOGIC_DB_HOSTNAME,
+                         netconst.BUSINESS_LOGIC_DB_PORT,
+                         'rest-gateway-db')
+
+        self._use_case_collection = 'use_cases'
+    
+    def all(self) -> List[UseCase]:
+        dicts = list(super().get_entries(self._use_case_collection, projection={'_id': False}))
+
+        return [UseCase.from_serializable_dict(d) for d in dicts]
+    
+    def delete_all(self):
+        collection = self._database[self._use_case_collection]
+        collection.delete_many({})
+    
+    def delete_all_with_name(self, name: str):
+        collection = self._database[self._use_case_collection]
+        collection.delete_many({"name": name})
+
+    def put(self, use_case_name: str):
+        use_cases = self.all_use_cases()
+
+        existing_use_cases = list(filter(lambda use_case: use_case.name == use_case_name, use_cases))
+
+        if len(existing_use_cases) == 0:
+            use_case = UseCase(use_case_name)
+            super().insert_entry(self._use_case_collection, use_case.to_serializable_dict())
+    

src/participation-hub/business-logic-microservice/app/routes/schema.py

+#global imports
+from db.entities.layer_adapter import LayerAdapter
+from db.schema_repository import SchemaRepository
+from services.layer_adapter_service import LayerAdapterService
+
+import json
+from flask import Response, request
+
+schema_repository = SchemaRepository()
+
+def all():
+    return [schema.to_serializable_dict() for schema in schema_repository.all()]
+
+def get_for_use_case(use_case:str):
+    schema = schema_repository.get_for_use_case(use_case)
+
+    if schema != None:
+        return Response(status=200, response=json.dumps(schema.to_serializable_dict()))
+    
+    return Response(status=404, response=f"Schema {use_case} does not exist")
+
+def delete_for_use_case(use_case:str):
+    schema = schema_repository.get_for_use_case(use_case)
+
+    if schema == None:
+        return Response(status=404, response=f"Schema {use_case} does not exist")
+    
+    schema_repository.delete_for_use_case(use_case)
+
+    return Response(status=200)
+
+def add_mapping(use_case:str):
+    data = request.json
+
+    if "internal" not in data or "external" not in data:
+        return Response(status=400, response=f"Field missing! Fields required: (internal, external)")
+    
+    schema = schema_repository.get_for_use_case(use_case)
+
+    if schema == None:
+        print("schema not there, creating it...")
+        schema = schema_repository.put(use_case)
+    
+    schema.add_mapping(data["internal"], data["external"])
+    schema_repository.update(schema)
+
+    return Response(status=200)
\ No newline at end of file

src/participation-hub/business-logic-microservice/app/routes/use_case.py

+from db.entities.layer_adapter import LayerAdapter
+from db.use_case_repository import UseCaseRepository
+from services.layer_adapter_service import LayerAdapterService
+
+import json
+from flask import Response, request
+
+use_case_repository = UseCaseRepository()
+
+def all():
+    return [adapter.to_serializable_dict() for adapter in use_case_repository.all()]
+
+def delete_all():
+    LayerAdapterService.delete_all()
+    return Response(status=200)
\ No newline at end of file

src/participation-hub/business-logic-microservice/app/services/layer_adapter_service.py

 #global imports
 from db.repository import Repository
+from db.schema_repository import SchemaRepository
+from db.use_case_repository import UseCaseRepository
 from db.entities.layer_adapter import LayerAdapter
 from db.entities.schema import Schema
 
 from typing import List
 
-
 class LayerAdapterService:
 
-    _repository = Repository()
-
-    @staticmethod
-    def all_schemas() -> List[Schema]:
-        return LayerAdapterService._repository.all_schemas()
-
-    @staticmethod
-    def schema_for_use_case(use_case: str):
-        LayerAdapterService._repository.put_use_case(use_case)
-        return LayerAdapterService._repository.schema_for_use_case(use_case)
-
-    @staticmethod
-    def put_schema(use_case: str):
-        schema = LayerAdapterService.schema_for_use_case(use_case)
-
-        if schema == None:
-            schema = Schema(use_case, mappings={})
-            LayerAdapterService._repository.add_schema(schema)
-        
-        return schema
+    _schema_repository = SchemaRepository()
+    _layer_repository = Repository()
+    _use_case_repository = UseCaseRepository()
     
     @staticmethod
     def check_layer(layer: LayerAdapter):
         '''
         checks if the given layer has correct mappings regarding the schema of the use_case
         '''
-        schema = LayerAdapterService.put_schema(layer.use_case)
+        schema = LayerAdapterService._schema_repository.put(layer.use_case)
         for p in layer.properties:
             if p not in schema.mappings:
                 raise ValueError(f'{p} is not existent in the schema!')
 
-    @staticmethod
-    def delete_schema(use_case:str):
-        LayerAdapterService._repository.delete_schema_with_use_case(use_case)
-
-    
-    @staticmethod
-    def update_schema(schema: Schema):
-        LayerAdapterService._repository.update_schema(schema)
-        
-    @staticmethod
-    def all_use_cases() -> List[str]:
-        return LayerAdapterService._repository.all_use_cases()
-    
-    @staticmethod
-    def delete_all_use_cases():
-        LayerAdapterService._repository.delete_all_use_cases()
-        LayerAdapterService._repository.delete_all_schemas()
-        LayerAdapterService._repository.delete_all_layers()
-    
-    @staticmethod
-    def delete_use_case(name:str):
-        LayerAdapterService._repository.delete_all_use_cases_with_name(name)
-
-    @staticmethod
-    def all() -> List[LayerAdapter]:
-        '''
-        Return all currently defined layers
-        '''
-        return LayerAdapterService._repository.all()
-    
-    @staticmethod
-    def all_for_use_case(use_case: str) -> List[LayerAdapter]:
-        '''
-        Return all currently defined layers that belong to the
-        given use-case
-        '''
-        return LayerAdapterService._repository.all_for_use_case(use_case)
-
-    @staticmethod
-    def update(layer: LayerAdapter):
-        '''
-        Overwrite the stored instance with the given one which is 
-        identified by the layer name
-
-        @params:
-            layer - Required : layer object holding the current data
-        '''
-        LayerAdapterService._repository.update(layer)
-
-    @staticmethod
-    def update_use_case(layer: LayerAdapter, use_case:str):
-        '''
-        Overwrite the stored instance with the given one which is 
-        identified by the layer name
-
-        @params:
-            layer - Required : layer object holding the current data
-        '''
-        LayerAdapterService._repository.update_use_case(layer, use_case)
-
-    @staticmethod
-    def add(name: str, use_case: str):
-        '''
-        Add a new layer to the DB. Attribute mapping and cluster
-        attributes will be empty per default
-
-        @params:
-            name        - Required : Unique name for a layer.
-            use_case    - Required : String-identifier for the use-case
-        '''
-        adapter_new = LayerAdapter(name, use_case, [], [])
-
-        LayerAdapterService._repository.add(adapter_new)
-
     @staticmethod
     def add_complete(layer: LayerAdapter):
         '''
-        Add a new layer to the DB. Attribute mappings and cluster
-        attributes of the given layer are used
+        Add a new layer to the DB. Attribute mappings and cluster attributes of the given layer
+        are used. Before inserting, the layer gets checked for consistency with the schema.
 
         @params:
             layer - Required : layer object holding correct data
         '''
-        LayerAdapterService._repository.add(layer)
-
-    @staticmethod
-    def delete(layer: LayerAdapter):
-        '''
-        delete all layers with the given name.
-
-        @params:
-            layer - Required : layer object to remove from the DB
-        '''
-        use_case = layer.use_case
-        LayerAdapterService._repository.delete_all_with_name_and_use_case(layer.name, use_case)
+        LayerAdapterService.check_layer(layer)
+        LayerAdapterService._layer_repository.add(layer)
     
     @staticmethod
-    def delete_all_layers():
-        LayerAdapterService._repository.delete_all_layers()
-
-    @staticmethod
-    def one(name: str, use_case: str) -> LayerAdapter:
-        '''
-        Retrieve a single layer from the DB. Returns None if no layer
-        was found under this name.
-
-         @params:
-            name        - Required : Unique name for a layer
-            use_case    - Required : String-identifier for the use-case
-        '''
-        result = LayerAdapterService._repository.one_by_name_and_usecase(name, use_case)
+    def delete_all_use_cases():
+        # TODO
+        LayerAdapterService._layer_repository.delete_all_use_cases()
+        LayerAdapterService._schema_repository.delete_all()
+        LayerAdapterService._use_case_repository.delete_all()
    
\ No newline at end of file
-        if len(result) == 1:
-            return LayerAdapter.from_serializable_dict(result[0])
-        else:
-            return None