788 lines
26 KiB
Python
788 lines
26 KiB
Python
import csv
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import pathlib
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from contextlib import suppress
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from itertools import chain
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from operator import attrgetter
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from typing import Dict, List, Set
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||
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from boltons import urlutils
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from citext import CIText
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from ereuse_utils.naming import HID_CONVERSION_DOC, Naming
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from more_itertools import unique_everseen
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from sqlalchemy import BigInteger, Boolean, Column, Enum as DBEnum, Float, ForeignKey, Integer, \
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Sequence, SmallInteger, Unicode, inspect, text
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from sqlalchemy.ext.declarative import declared_attr
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from sqlalchemy.orm import ColumnProperty, backref, relationship, validates
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from sqlalchemy.util import OrderedSet
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from sqlalchemy_utils import ColorType
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from stdnum import imei, meid
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from teal.db import CASCADE_DEL, POLYMORPHIC_ID, POLYMORPHIC_ON, ResourceNotFound, URL, \
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check_lower, check_range
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from teal.enums import Layouts
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from teal.marshmallow import ValidationError
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from teal.resource import url_for_resource
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from ereuse_devicehub.db import db
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from ereuse_devicehub.resources.enums import ComputerChassis, DataStorageInterface, DisplayTech, \
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PrinterTechnology, RamFormat, RamInterface, Severity
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from ereuse_devicehub.resources.models import STR_SM_SIZE, Thing
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class Device(Thing):
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"""Base class for any type of physical object that can be identified.
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Device partly extends `Schema's IndividualProduct <https
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://schema.org/IndividualProduct>`_, adapting it to our
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use case.
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A device requires an identification method, ideally a serial number,
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although it can be identified only with tags too. More ideally
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both methods are used.
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Devices can contain ``Components``, which are just a type of device
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(it is a recursive relationship).
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"""
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EVENT_SORT_KEY = attrgetter('created')
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id = Column(BigInteger, Sequence('device_seq'), primary_key=True)
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id.comment = """
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The identifier of the device for this database. Used only
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internally for software; users should not use this.
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"""
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type = Column(Unicode(STR_SM_SIZE), nullable=False)
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hid = Column(Unicode(), check_lower('hid'), unique=True)
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hid.comment = """
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The Hardware ID (HID) is the unique ID traceability systems
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use to ID a device globally. This field is auto-generated
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from Devicehub using literal identifiers from the device,
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so it can re-generated *offline*.
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""" + HID_CONVERSION_DOC
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model = Column(Unicode(), check_lower('model'))
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model.comment = """The model or brand of the device in lower case.
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Devices usually report one of both (model or brand). This value
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must be consistent through time.
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"""
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manufacturer = Column(Unicode(), check_lower('manufacturer'))
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manufacturer.comment = """The normalized name of the manufacturer
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in lower case.
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Although as of now Devicehub does not enforce normalization,
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users can choose a list of normalized manufacturer names
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from the own ``/manufacturers`` REST endpoint.
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"""
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serial_number = Column(Unicode(), check_lower('serial_number'))
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serial_number.comment = """The serial number of the device in lower case."""
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weight = Column(Float(decimal_return_scale=3), check_range('weight', 0.1, 5))
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weight.comment = """
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The weight of the device.
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"""
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width = Column(Float(decimal_return_scale=3), check_range('width', 0.1, 5))
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width.comment = """
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The width of the device.
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"""
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height = Column(Float(decimal_return_scale=3), check_range('height', 0.1, 5))
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height.comment = """
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The height of the device.
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"""
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depth = Column(Float(decimal_return_scale=3), check_range('depth', 0.1, 5))
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depth.comment = """
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The depth of the device.
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"""
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color = Column(ColorType)
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color.comment = """The predominant color of the device."""
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production_date = Column(db.TIMESTAMP(timezone=True))
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production_date.comment = """The date of production of the device."""
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_NON_PHYSICAL_PROPS = {
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'id',
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'type',
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'created',
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'updated',
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'parent_id',
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'hid',
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'production_date',
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'color', # these are only user-input thus volatile
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'width',
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'height',
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'depth',
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'weight'
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}
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__table_args__ = (
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db.Index('device_id', id, postgresql_using='hash'),
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db.Index('type_index', type, postgresql_using='hash')
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)
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def __init__(self, **kw) -> None:
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super().__init__(**kw)
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with suppress(TypeError):
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self.hid = Naming.hid(self.type, self.manufacturer, self.model, self.serial_number)
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@property
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def events(self) -> list:
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"""
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All the events where the device participated, including:
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1. Events performed directly to the device.
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2. Events performed to a component.
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3. Events performed to a parent device.
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Events are returned by ascending ``created`` time.
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"""
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return sorted(chain(self.events_multiple, self.events_one), key=self.EVENT_SORT_KEY)
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@property
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def problems(self):
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"""Current events with severity.Warning or higher.
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There can be up to 3 events: current Snapshot,
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current Physical event, current Trading event.
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"""
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from ereuse_devicehub.resources.device import states
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from ereuse_devicehub.resources.event.models import Snapshot
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events = set()
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with suppress(LookupError, ValueError):
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events.add(self.last_event_of(Snapshot))
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with suppress(LookupError, ValueError):
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events.add(self.last_event_of(*states.Physical.events()))
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with suppress(LookupError, ValueError):
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events.add(self.last_event_of(*states.Trading.events()))
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return self._warning_events(events)
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@property
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def physical_properties(self) -> Dict[str, object or None]:
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"""
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Fields that describe the physical properties of a device.
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:return A generator where each value is a tuple with tho fields:
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- Column.
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- Actual value of the column or None.
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"""
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# todo ensure to remove materialized values when start using them
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# todo or self.__table__.columns if inspect fails
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return {c.key: getattr(self, c.key, None)
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for c in inspect(self.__class__).attrs
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if isinstance(c, ColumnProperty)
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and not getattr(c, 'foreign_keys', None)
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and c.key not in self._NON_PHYSICAL_PROPS}
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@property
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def url(self) -> urlutils.URL:
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"""The URL where to GET this device."""
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return urlutils.URL(url_for_resource(Device, item_id=self.id))
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@property
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def rate(self):
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"""The last AggregateRate of the device."""
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with suppress(LookupError, ValueError):
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from ereuse_devicehub.resources.event.models import AggregateRate
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return self.last_event_of(AggregateRate)
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@property
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def price(self):
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"""The actual Price of the device, or None if no price has
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ever been set."""
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with suppress(LookupError, ValueError):
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from ereuse_devicehub.resources.event.models import Price
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return self.last_event_of(Price)
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@property
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def trading(self):
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"""The actual trading state, or None if no Trade event has
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ever been performed to this device."""
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from ereuse_devicehub.resources.device import states
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with suppress(LookupError, ValueError):
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event = self.last_event_of(*states.Trading.events())
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return states.Trading(event.__class__)
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@property
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def physical(self):
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"""The actual physical state, None otherwise."""
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from ereuse_devicehub.resources.device import states
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with suppress(LookupError, ValueError):
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event = self.last_event_of(*states.Physical.events())
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return states.Physical(event.__class__)
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@property
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def physical_possessor(self):
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"""The actual physical possessor or None.
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The physical possessor is the Agent that has physically
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the device. It differs from legal owners, usufructuarees
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or reserves in that the physical possessor does not have
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a legal relation per se with the device, but it is the one
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that has it physically. As an example, a transporter could
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be a physical possessor of a device although it does not
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own it legally.
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Note that there can only be one physical possessor per device,
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and :class:`ereuse_devicehub.resources.event.models.Receive`
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changes it.
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"""
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from ereuse_devicehub.resources.event.models import Receive
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with suppress(LookupError):
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event = self.last_event_of(Receive)
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return event.agent
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@property
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def working(self):
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"""A list of the current tests with warning or errors. A
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device is working if the list is empty.
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This property returns, for the last test performed of each type,
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the one with the worst ``severity`` of them, or ``None`` if no
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test has been executed.
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"""
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from ereuse_devicehub.resources.event.models import Test
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current_tests = unique_everseen((e for e in reversed(self.events) if isinstance(e, Test)),
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key=attrgetter('type')) # last test of each type
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return self._warning_events(current_tests)
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@declared_attr
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def __mapper_args__(cls):
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"""
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Defines inheritance.
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From `the guide <http://docs.sqlalchemy.org/en/latest/orm/
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extensions/declarative/api.html
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#sqlalchemy.ext.declarative.declared_attr>`_
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"""
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args = {POLYMORPHIC_ID: cls.t}
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if cls.t == 'Device':
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args[POLYMORPHIC_ON] = cls.type
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return args
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def last_event_of(self, *types):
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"""Gets the last event of the given types.
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:raise LookupError: Device has not an event of the given type.
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"""
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try:
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return next(e for e in reversed(self.events) if isinstance(e, types))
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except StopIteration:
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raise LookupError('{!r} does not contain events of types {}.'.format(self, types))
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def _warning_events(self, events):
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return sorted((ev for ev in events if ev.severity >= Severity.Warning),
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key=self.EVENT_SORT_KEY)
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def __lt__(self, other):
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return self.id < other.id
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def __str__(self) -> str:
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return '{0.t} {0.id}: model {0.model}, S/N {0.serial_number}'.format(self)
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def __format__(self, format_spec):
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if not format_spec:
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return super().__format__(format_spec)
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v = ''
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if 't' in format_spec:
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v += '{0.t} {0.model}'.format(self)
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if 's' in format_spec:
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v += '({0.manufacturer})'.format(self)
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if self.serial_number:
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v += ' S/N ' + self.serial_number.upper()
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return v
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class DisplayMixin:
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"""
|
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Aspect ratio can be computed as in
|
||
https://github.com/mirukan/whratio/blob/master/whratio/ratio.py and
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could be a future property.
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"""
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size = Column(Float(decimal_return_scale=2), check_range('size', 2, 150))
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size.comment = """
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The size of the monitor in inches.
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"""
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technology = Column(DBEnum(DisplayTech))
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technology.comment = """
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The technology the monitor uses to display the image.
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||
"""
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||
resolution_width = Column(SmallInteger, check_range('resolution_width', 10, 20000))
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||
resolution_width.comment = """
|
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The maximum horizontal resolution the monitor can natively support
|
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in pixels.
|
||
"""
|
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resolution_height = Column(SmallInteger, check_range('resolution_height', 10, 20000))
|
||
resolution_height.comment = """
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The maximum vertical resolution the monitor can natively support
|
||
in pixels.
|
||
"""
|
||
refresh_rate = Column(SmallInteger, check_range('refresh_rate', 10, 1000))
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||
contrast_ratio = Column(SmallInteger, check_range('contrast_ratio', 100, 100000))
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||
touchable = Column(Boolean, nullable=False, default=False)
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touchable.comment = """Whether it is a touchscreen."""
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||
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||
def __format__(self, format_spec: str) -> str:
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v = ''
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if 't' in format_spec:
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v += '{0.t} {0.model}'.format(self)
|
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if 's' in format_spec:
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v += '({0.manufacturer}) S/N {0.serial_number} – {0.size}in {0.technology}'
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return v
|
||
|
||
|
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class Computer(Device):
|
||
"""A chassis with components inside that can be processed
|
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automatically with Workbench Computer.
|
||
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Computer is broadly extended by ``Desktop``, ``Laptop``, and
|
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``Server``. The property ``chassis`` defines it more granularly.
|
||
"""
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
chassis = Column(DBEnum(ComputerChassis), nullable=False)
|
||
chassis.comment = """The physical form of the computer.
|
||
|
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It is a subset of the Linux definition of DMI / DMI decode.
|
||
"""
|
||
|
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def __init__(self, chassis, **kwargs) -> None:
|
||
chassis = ComputerChassis(chassis)
|
||
super().__init__(chassis=chassis, **kwargs)
|
||
|
||
@property
|
||
def events(self) -> list:
|
||
return sorted(chain(super().events, self.events_parent), key=self.EVENT_SORT_KEY)
|
||
|
||
@property
|
||
def ram_size(self) -> int:
|
||
"""The total of RAM memory the computer has."""
|
||
return sum(ram.size or 0 for ram in self.components if isinstance(ram, RamModule))
|
||
|
||
@property
|
||
def data_storage_size(self) -> int:
|
||
"""The total of data storage the computer has."""
|
||
return sum(ds.size or 0 for ds in self.components if isinstance(ds, DataStorage))
|
||
|
||
@property
|
||
def processor_model(self) -> str:
|
||
"""The model of one of the processors of the computer."""
|
||
return next((p.model for p in self.components if isinstance(p, Processor)), None)
|
||
|
||
@property
|
||
def graphic_card_model(self) -> str:
|
||
"""The model of one of the graphic cards of the computer."""
|
||
return next((p.model for p in self.components if isinstance(p, GraphicCard)), None)
|
||
|
||
@property
|
||
def network_speeds(self) -> List[int]:
|
||
"""Returns two values representing the speeds of the network
|
||
adapters of the device.
|
||
|
||
1. The max Ethernet speed of the computer, 0 if ethernet
|
||
adaptor exists but its speed is unknown, None if no eth
|
||
adaptor exists.# TODO add all grade tables (chassis defects, camera defects, buttons test, connectivity, ..)
|
||
|
||
2. The max WiFi speed of the computer, 0 if computer has
|
||
WiFi but its speed is unknown, None if no WiFi adaptor
|
||
exists.
|
||
"""
|
||
speeds = [None, None]
|
||
for net in (c for c in self.components if isinstance(c, NetworkAdapter)):
|
||
speeds[net.wireless] = max(net.speed or 0, speeds[net.wireless] or 0)
|
||
return speeds
|
||
|
||
@property
|
||
def privacy(self):
|
||
"""Returns the privacy of all ``DataStorage`` components when
|
||
it is not None.
|
||
"""
|
||
return set(
|
||
privacy for privacy in
|
||
(hdd.privacy for hdd in self.components if isinstance(hdd, DataStorage))
|
||
if privacy
|
||
)
|
||
|
||
def __format__(self, format_spec):
|
||
if not format_spec:
|
||
return super().__format__(format_spec)
|
||
v = ''
|
||
if 't' in format_spec:
|
||
v += '{0.chassis} {0.model}'.format(self)
|
||
elif 's' in format_spec:
|
||
v += '({0.manufacturer})'.format(self)
|
||
if self.serial_number:
|
||
v += ' S/N ' + self.serial_number.upper()
|
||
return v
|
||
|
||
|
||
class Desktop(Computer):
|
||
pass
|
||
|
||
|
||
class Laptop(Computer):
|
||
layout = Column(DBEnum(Layouts))
|
||
layout.comment = """Layout of a built-in keyboard of the computer,
|
||
if any."""
|
||
|
||
|
||
class Server(Computer):
|
||
pass
|
||
|
||
|
||
class Monitor(DisplayMixin, Device):
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
|
||
|
||
class ComputerMonitor(Monitor):
|
||
pass
|
||
|
||
|
||
class TelevisionSet(Monitor):
|
||
pass
|
||
|
||
|
||
class Projector(Monitor):
|
||
pass
|
||
|
||
|
||
class Mobile(Device):
|
||
"""A mobile device consisting of smartphones, tablets, and cellphones."""
|
||
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
imei = Column(BigInteger)
|
||
imei.comment = """
|
||
The International Mobile Equipment Identity of the smartphone
|
||
as an integer.
|
||
"""
|
||
meid = Column(Unicode)
|
||
meid.comment = """
|
||
The Mobile Equipment Identifier as a hexadecimal string.
|
||
"""
|
||
|
||
@validates('imei')
|
||
def validate_imei(self, _, value: int):
|
||
if not imei.is_valid(str(value)):
|
||
raise ValidationError('{} is not a valid imei.'.format(value))
|
||
return value
|
||
|
||
@validates('meid')
|
||
def validate_meid(self, _, value: str):
|
||
if not meid.is_valid(value):
|
||
raise ValidationError('{} is not a valid meid.'.format(value))
|
||
return value
|
||
|
||
|
||
class Smartphone(Mobile):
|
||
pass
|
||
|
||
|
||
class Tablet(Mobile):
|
||
pass
|
||
|
||
|
||
class Cellphone(Mobile):
|
||
pass
|
||
|
||
|
||
class Component(Device):
|
||
"""A device that can be inside another device."""
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
|
||
parent_id = Column(BigInteger, ForeignKey(Computer.id))
|
||
parent = relationship(Computer,
|
||
backref=backref('components',
|
||
lazy=True,
|
||
cascade=CASCADE_DEL,
|
||
order_by=lambda: Component.id,
|
||
collection_class=OrderedSet),
|
||
primaryjoin=parent_id == Computer.id)
|
||
|
||
__table_args__ = (
|
||
db.Index('parent_index', parent_id, postgresql_using='hash'),
|
||
)
|
||
|
||
def similar_one(self, parent: Computer, blacklist: Set[int]) -> 'Component':
|
||
"""
|
||
Gets a component that:
|
||
- has the same parent.
|
||
- Doesn't generate HID.
|
||
- Has same physical properties.
|
||
:param parent:
|
||
:param blacklist: A set of components to not to consider
|
||
when looking for similar ones.
|
||
"""
|
||
assert self.hid is None, 'Don\'t use this method with a component that has HID'
|
||
component = self.__class__.query \
|
||
.filter_by(parent=parent, hid=None, **self.physical_properties) \
|
||
.filter(~Component.id.in_(blacklist)) \
|
||
.first()
|
||
if not component:
|
||
raise ResourceNotFound(self.type)
|
||
return component
|
||
|
||
@property
|
||
def events(self) -> list:
|
||
return sorted(chain(super().events, self.events_components), key=self.EVENT_SORT_KEY)
|
||
|
||
|
||
class JoinedComponentTableMixin:
|
||
@declared_attr
|
||
def id(cls):
|
||
return Column(BigInteger, ForeignKey(Component.id), primary_key=True)
|
||
|
||
|
||
class GraphicCard(JoinedComponentTableMixin, Component):
|
||
memory = Column(SmallInteger, check_range('memory', min=1, max=10000))
|
||
memory.comment = """
|
||
The amount of memory of the Graphic Card in MB.
|
||
"""
|
||
|
||
|
||
class DataStorage(JoinedComponentTableMixin, Component):
|
||
"""A device that stores information."""
|
||
size = Column(Integer, check_range('size', min=1, max=10 ** 8))
|
||
size.comment = """
|
||
The size of the data-storage in MB.
|
||
"""
|
||
interface = Column(DBEnum(DataStorageInterface))
|
||
|
||
@property
|
||
def privacy(self):
|
||
"""Returns the privacy compliance state of the data storage.
|
||
|
||
This is, the last erasure performed to the data storage.
|
||
"""
|
||
from ereuse_devicehub.resources.event.models import EraseBasic
|
||
try:
|
||
ev = self.last_event_of(EraseBasic)
|
||
except LookupError:
|
||
ev = None
|
||
return ev
|
||
|
||
def __format__(self, format_spec):
|
||
v = super().__format__(format_spec)
|
||
if 's' in format_spec:
|
||
v += ' – {} GB'.format(self.size // 1000 if self.size else '?')
|
||
return v
|
||
|
||
|
||
class HardDrive(DataStorage):
|
||
pass
|
||
|
||
|
||
class SolidStateDrive(DataStorage):
|
||
pass
|
||
|
||
|
||
class Motherboard(JoinedComponentTableMixin, Component):
|
||
slots = Column(SmallInteger, check_range('slots', min=0))
|
||
slots.comment = """
|
||
PCI slots the motherboard has.
|
||
"""
|
||
usb = Column(SmallInteger, check_range('usb', min=0))
|
||
firewire = Column(SmallInteger, check_range('firewire', min=0))
|
||
serial = Column(SmallInteger, check_range('serial', min=0))
|
||
pcmcia = Column(SmallInteger, check_range('pcmcia', min=0))
|
||
|
||
|
||
class NetworkMixin:
|
||
speed = Column(SmallInteger, check_range('speed', min=10, max=10000))
|
||
speed.comment = """
|
||
The maximum speed this network adapter can handle, in mbps.
|
||
"""
|
||
wireless = Column(Boolean, nullable=False, default=False)
|
||
wireless.comment = """
|
||
Whether it is a wireless interface.
|
||
"""
|
||
|
||
def __format__(self, format_spec):
|
||
v = super().__format__(format_spec)
|
||
if 's' in format_spec:
|
||
v += ' – {} Mbps'.format(self.speed)
|
||
return v
|
||
|
||
|
||
class NetworkAdapter(JoinedComponentTableMixin, NetworkMixin, Component):
|
||
pass
|
||
|
||
|
||
class Processor(JoinedComponentTableMixin, Component):
|
||
"""The CPU."""
|
||
speed = Column(Float, check_range('speed', 0.1, 15))
|
||
speed.comment = """The regular CPU speed."""
|
||
cores = Column(SmallInteger, check_range('cores', 1, 10))
|
||
cores.comment = """The number of regular cores."""
|
||
threads = Column(SmallInteger, check_range('threads', 1, 20))
|
||
threads.comment = """The number of threads per core."""
|
||
address = Column(SmallInteger, check_range('address', 8, 256))
|
||
address.comment = """The address of the CPU: 8, 16, 32, 64, 128 or 256 bits."""
|
||
|
||
|
||
class RamModule(JoinedComponentTableMixin, Component):
|
||
"""A stick of RAM."""
|
||
size = Column(SmallInteger, check_range('size', min=128, max=17000))
|
||
size.comment = """The capacity of the RAM stick."""
|
||
speed = Column(SmallInteger, check_range('speed', min=100, max=10000))
|
||
interface = Column(DBEnum(RamInterface))
|
||
format = Column(DBEnum(RamFormat))
|
||
|
||
|
||
class SoundCard(JoinedComponentTableMixin, Component):
|
||
pass
|
||
|
||
|
||
class Display(JoinedComponentTableMixin, DisplayMixin, Component):
|
||
"""
|
||
The display of a device. This is used in all devices that have
|
||
displays but that it is not their main part, like laptops,
|
||
mobiles, smart-watches, and so on; excluding ``ComputerMonitor``
|
||
and ``TelevisionSet``.
|
||
"""
|
||
pass
|
||
|
||
|
||
class ComputerAccessory(Device):
|
||
"""Computer peripherals and similar accessories."""
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
pass
|
||
|
||
|
||
class SAI(ComputerAccessory):
|
||
pass
|
||
|
||
|
||
class Keyboard(ComputerAccessory):
|
||
layout = Column(DBEnum(Layouts)) # If we want to do it not null
|
||
|
||
|
||
class Mouse(ComputerAccessory):
|
||
pass
|
||
|
||
|
||
class MemoryCardReader(ComputerAccessory):
|
||
pass
|
||
|
||
|
||
class Networking(NetworkMixin, Device):
|
||
"""Routers, switches, hubs..."""
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
|
||
|
||
class Router(Networking):
|
||
pass
|
||
|
||
|
||
class Switch(Networking):
|
||
pass
|
||
|
||
|
||
class Hub(Networking):
|
||
pass
|
||
|
||
|
||
class WirelessAccessPoint(Networking):
|
||
pass
|
||
|
||
|
||
class Printer(Device):
|
||
id = Column(BigInteger, ForeignKey(Device.id), primary_key=True)
|
||
wireless = Column(Boolean, nullable=False, default=False)
|
||
wireless.comment = """Whether it is a wireless printer."""
|
||
scanning = Column(Boolean, nullable=False, default=False)
|
||
scanning.comment = """Whether the printer has scanning capabilities."""
|
||
technology = Column(DBEnum(PrinterTechnology))
|
||
technology.comment = """Technology used to print."""
|
||
monochrome = Column(Boolean, nullable=False, default=True)
|
||
monochrome.comment = """Whether the printer is only monochrome."""
|
||
|
||
|
||
class LabelPrinter(Printer):
|
||
pass
|
||
|
||
|
||
class Sound(Device):
|
||
pass
|
||
|
||
|
||
class Microphone(Sound):
|
||
pass
|
||
|
||
|
||
class Video(Device):
|
||
"""Devices related to video treatment."""
|
||
pass
|
||
|
||
|
||
class VideoScaler(Video):
|
||
pass
|
||
|
||
|
||
class Videoconference(Video):
|
||
pass
|
||
|
||
|
||
class Cooking(Device):
|
||
"""Cooking devices."""
|
||
pass
|
||
|
||
|
||
class Mixer(Cooking):
|
||
pass
|
||
|
||
|
||
class Manufacturer(db.Model):
|
||
"""The normalized information about a manufacturer.
|
||
|
||
Ideally users should use the names from this list when submitting
|
||
devices.
|
||
"""
|
||
CSV_DELIMITER = csv.get_dialect('excel').delimiter
|
||
|
||
name = db.Column(CIText(), primary_key=True)
|
||
name.comment = """The normalized name of the manufacturer."""
|
||
url = db.Column(URL(), unique=True)
|
||
url.comment = """An URL to a page describing the manufacturer."""
|
||
logo = db.Column(URL())
|
||
logo.comment = """An URL pointing to the logo of the manufacturer."""
|
||
|
||
__table_args__ = (
|
||
# from https://niallburkley.com/blog/index-columns-for-like-in-postgres/
|
||
db.Index('name_index', text('name gin_trgm_ops'), postgresql_using='gin'),
|
||
{'schema': 'common'}
|
||
)
|
||
|
||
@classmethod
|
||
def add_all_to_session(cls, session: db.Session):
|
||
"""Adds all manufacturers to session."""
|
||
cursor = session.connection().connection.cursor()
|
||
#: Dialect used to write the CSV
|
||
|
||
with pathlib.Path(__file__).parent.joinpath('manufacturers.csv').open() as f:
|
||
cursor.copy_expert(
|
||
'COPY common.manufacturer FROM STDIN (FORMAT csv)',
|
||
f
|
||
)
|
||
|
||
|
||
class Battery(Component):
|
||
"""
|
||
Battery component, mobile device
|
||
"""
|
||
size = Column(Float(decimal_return_scale=2))
|
||
size.comment = 'Battery size; Units: 2000 mAh'
|
||
voltage = Column()
|
||
voltage.comment = 'Battery voltage; Units: 3,5 V'
|
||
technology = Column()
|
||
technology.comment = 'Battery technology used; Ex: Li-Ti'
|
||
charge_counter = Column()
|
||
charge_counter.comment = 'Number of time that battery has been charged'
|
||
wireless = Column(Boolean, nullable=False, default=False)
|
||
wireless.comment = 'If battery can charging wireless'
|
||
health = Column(DBEnum)
|
||
health.comment = 'Battery health indicator'
|
||
status = Column(DBEnum)
|
||
status.comment = 'Battery status indicator'
|
||
|
||
|
||
class Camera(Component):
|
||
"""
|
||
Component camera in mobile devices
|
||
"""
|
||
|
||
resolution = Column(Float(decimal_return_scale=2))
|
||
resolution.comment = 'Camera resolution; Units: Megapixels'
|