Python create_engine_from_url Exemples

Exemple #1

Fichier : list_stream_data.py Projet : vipullakhani/preload-database

def main():
    options = docopt.docopt(__doc__)
    name_or_ids = [s.decode('UTF8') for s in options['<name_or_id>']]
    stream = options['stream']

    engine = create_engine_from_url(None)
    session = create_scoped_session(engine)
    MetadataBase.query = session.query_property()

    if stream:
        streams = get_objects_from_preload(Stream, name_or_ids)
        list_stream_parameters(name_or_ids, streams)
    else:
        parameters = get_objects_from_preload(Parameter, name_or_ids)
        list_parameters(name_or_ids, parameters)

Exemple #2

#!/usr/bin/env python

import yaml
from ooi_data.postgres.model import *

from tools.m2m import MachineToMachine
from database import create_engine_from_url, create_scoped_session

engine = create_engine_from_url(None)
session = create_scoped_session(engine)

MetadataBase.query = session.query_property()


def build_dpi_map():
    """
    Build a map from a specific data product identifier to a set of parameters which fulfill it
    :return:
    """
    dpi_map = {}
    for p in Parameter.query:
        if p.data_product_identifier:
            dpi_map.setdefault(p.data_product_identifier, set()).add(p)
    return dpi_map


def build_affects_map():
    """
    Build a map from parameter to the set of parameters *directly* affected by it
    :return:
    """

Exemple #3

Fichier : generate_cql.py Projet : oceanobservatories/preload-database

#!/usr/bin/env python
import codecs
import os
import shutil
import logging
import jinja2
import database
import numpy as np
from ooi_data.postgres.model import Stream

engine = database.create_engine_from_url(None)


Session = database.create_scoped_session(engine)
session = Session()


DROP_KEYSPACE = 'drop keyspace ooi;\n\n'

CREATE_KEYSPACE = "create keyspace ooi with replication = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };\n\n"

CREATE_PROVENANCE = '''
CREATE TABLE ooi.dataset_l0_provenance (
subsite text,
node text,
sensor text,
method text,
deployment int,
id uuid,
fileName text,
parserName text,

Exemple #4

#!/usr/bin/env python
import codecs
import os
import shutil
import logging
import jinja2
import database
import numpy as np
from ooi_data.postgres.model import Stream

engine = database.create_engine_from_url(None)

Session = database.create_scoped_session(engine)
session = Session()

DROP_KEYSPACE = 'drop keyspace ooi;\n\n'

CREATE_KEYSPACE = "create keyspace ooi with replication = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };\n\n"

CREATE_PROVENANCE = '''
CREATE TABLE ooi.dataset_l0_provenance (
subsite text,
node text,
sensor text,
method text,
deployment int,
id uuid,
fileName text,
parserName text,
parserVersion text,
PRIMARY KEY((subsite, node, sensor), method, deployment, id)

Exemple #5

 def setUpClass(cls):
     engine = create_engine_from_url(None)
     session = create_scoped_session(engine)
     MetadataBase.query = session.query_property()