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datasources.models.quality module

This module contains models related to the quality assessment of data sources.

class datasources.models.quality.QualityCriterion(*args, **kwargs)

Bases: django.db.models.base.Model

A weighted criterion to determine whether a data source meets a certain quality level.

exception DoesNotExist

Bases: django.core.exceptions.ObjectDoesNotExist

exception MultipleObjectsReturned

Bases: django.core.exceptions.MultipleObjectsReturned

do_not_call_in_templates = True

id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

metadata_field

Which metadata field represents this criterion?

metadata_field_id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

objects = <django.db.models.manager.Manager object>

quality_level

Which quality level does this criterion belong to?

quality_level_id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

weight

What proportion of the quality level does this criterion provide?

class datasources.models.quality.QualityLevel(*args, **kwargs)

Bases: django.db.models.base.Model

A set of criteria that is required to grant a particular quality level.

exception DoesNotExist

Bases: django.core.exceptions.ObjectDoesNotExist

exception MultipleObjectsReturned

Bases: django.core.exceptions.MultipleObjectsReturned

criteria

Accessor to the related objects manager on the reverse side of a many-to-one relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Parent.children is a ReverseManyToOneDescriptor instance.

Most of the implementation is delegated to a dynamically defined manager class built by create_forward_many_to_many_manager() defined below.

do_not_call_in_templates = True

id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

level

What level is this?

objects = <django.db.models.manager.Manager object>

ruleset

Which ruleset does this level belong to?

ruleset_id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

threshold

Threshold level that must be exceeded by criteria weights to pass this level

class datasources.models.quality.QualityRuleset(*args, **kwargs)

Bases: django.db.models.base.Model

A ruleset for assessing the quality of a data source.

exception DoesNotExist

Bases: django.core.exceptions.ObjectDoesNotExist

exception MultipleObjectsReturned

Bases: django.core.exceptions.MultipleObjectsReturned

do_not_call_in_templates = True

id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

levels

Accessor to the related objects manager on the reverse side of a many-to-one relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Parent.children is a ReverseManyToOneDescriptor instance.

Most of the implementation is delegated to a dynamically defined manager class built by create_forward_many_to_many_manager() defined below.

name

Name of the ruleset

objects = <django.db.models.manager.Manager object>

short_name

Short text identifier

version

Ruleset version - distinguishes successive versions of the same set