add observation class for importing observations

gschliefgraben_glasfaser/__init__.py

@@ -1,2 +1,4 @@
-# For relative imports to work in Python 3.6
-import os, sys; sys.path.append(os.path.dirname(os.path.realpath(__file__)))
+''' For relative imports to work in Python 3.6 '''
+import os
+import sys
+sys.path.append(os.path.dirname(os.path.realpath(__file__)))

gschliefgraben_glasfaser/main.py

@@ -10,10 +10,10 @@ import os
 # currentdir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
 # parentdir = os.path.dirname(currentdir)
 # sys.path.insert(0, parentdir)
-from db.pg_models import create_pg_session
 from sqlalchemy.orm import session
-from gschliefgraben_glasfaser.models import PersonSchema
-from models import Person, PersonSchema
+from models import ObservationSchema, Person, PersonSchema, Observation
+from db.pg_models import create_pg_session
+#from models import Person, PersonSchema
 # response = requests.get('https://api.com/')
 # print(response)  # shows the response's HTTP status code
 # print(response.json())  # shows the response's JSON response body, if it has one
@@ -21,21 +21,29 @@ from models import Person, PersonSchema
 
 
 def main():
-    # db_user = os.environ.get("POSTGIS_DBUSER")
-    # print(db_user)
+    ''' main method '''
+    db_user = os.environ.get("POSTGIS_DBUSER")
+    print(db_user)
 
     pg_session: session = create_pg_session()
-    pg_person: Person = pg_session.query(Person).first()
+    # pg_person: Person = pg_session.query(Person).first()
+    observation: Observation = pg_session.query(Observation).first()
+    print (observation)
 
     # serialize db data to json
-    person_schema = PersonSchema()
-    dump_data = person_schema.dump(pg_person)
+    # person_schema = PersonSchema()
+    # dump_data = person_schema.dump(pg_person)
+    # print(dump_data)
+    # serialize db data to json
+    observation_schema = ObservationSchema()
+    dump_data = observation_schema.dump(observation)
     print(dump_data)
 
-    # deserialize
-    load_data: Person = person_schema.load(dump_data)
-    print(load_data)
-    create(dump_data)
+    # # deserialize
+    # load_data: Person = person_schema.load(dump_data)
+    # print(load_data)
+
+    # create(dump_data)
 
 
 def create(person_json: PersonSchema):
@@ -48,13 +56,13 @@ def create(person_json: PersonSchema):
 
     login = person_json.get('login')
     #lname = person.get('lname')
-    session = create_pg_session()
+    db_session = create_pg_session()
 
     # existing_person = Person.query \
     #     .filter(Person.login == login) \
     #     .one_or_none()
     existing_person: bool = ( \
-        session.query(Person) \
+        db_session.query(Person) \
         .filter(Person.login == login)
         .one_or_none()
     )
@@ -67,8 +75,8 @@ def create(person_json: PersonSchema):
         new_person: Person = schema.load(person_json)
 
         # Add the person to the database
-        session.add(new_person)
-        session.commit()
+        db_session.add(new_person)
+        db_session.commit()
 
         # Serialize and return the newly created person in the response
         data = schema.dump(new_person)

gschliefgraben_glasfaser/models.py

@@ -10,16 +10,52 @@ from datetime import datetime
 
 # import os
 from sqlalchemy import (Column, Integer,
-                        String, DateTime)
+                        String, DateTime, ForeignKey, Numeric)
 from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import session
-from marshmallow import Schema
-from db.pg_models import create_pg_session
+from sqlalchemy.orm import session, relationship
+#from marshmallow import Schema
 from marshmallow_sqlalchemy import SQLAlchemyAutoSchema
+from db.pg_models import create_pg_session
+
 
 Base = declarative_base()
 
 
+class Observation(Base):
+    """ observation class """
+    __tablename__ = 'observation'
+    __table_args__ = {"schema": "gba"}
+
+    id = Column('observation_id', Integer, primary_key=True)
+    name = Column('name', String)
+    value_type = Column('value_type', String)
+    # pitch = Column('PITCH', String)
+    # roll = Column('ROLL', String)
+    sampling_time_start = Column('sampling_time_start', DateTime)
+    sampling_time_end = Column('sampling_time_end', DateTime)
+    result_time = Column('result_time', DateTime)
+    sta_identifier = Column('sta_identifier', String)
+    value_quantity = Column('value_quantity', Numeric(20, 10), nullable=False)
+
+    # fk_dataset_id = Column('fk_dataset_id', Integer,
+    #                        ForeignKey('gba.dataset.dataset_id'))
+    # dataset = relationship("Dataset", lazy="joined",
+    #                        foreign_keys=[fk_dataset_id])
+    fk_dataset_id = Column(Integer, ForeignKey(
+        'gba.dataset.dataset_id'), nullable=False)
+    # dataset = relationship("Dataset", back_populates="observations")
+
+class ObservationSchema(SQLAlchemyAutoSchema):
+    """ Platform class """
+    class Meta:
+        """ Platform class """
+        model = Observation
+        include_relationships = True
+        load_instance = True
+        #pg_session: session = create_pg_session()
+        sqla_session: session = create_pg_session()
+
+
 class Person(Base):
     """ Platform class """
     __tablename__ = 'accounts'
@@ -30,6 +66,7 @@ class Person(Base):
     login = Column(String(255))
     timestamp = Column('updated_at', DateTime, default=datetime.utcnow,
                        onupdate=datetime.utcnow)
+
     def __repr__(self):
         return "<User(name='%s', lastname='%s')>" % (
             self.login, self.lname)

notes.txt

@@ -30,7 +30,7 @@ d:/Software/geomon/.venv/Scripts/python.exe -m pip install -U autopep8
 
 python -m pip install fdb
 python -m pip install sqlalchemy-firebird
-python -m pip install psycopg2
+python -m pip uninstall psycopg2
 
 Marshmallow provides functionality to serialize and deserialize Python objects as they flow out of and into our JSON-based REST API. Marshmallow converts Python class instances to objects that can be converted to JSON.
 python -m pip install marshmallow-sqlalchemy marshmallow