SymbolicMusicFile¶

class database.models.SymbolicMusicFile(*args, **kwargs)¶

Bases: database.models.file.File

A manifestation of a SourceInstantiation as an digital symbolic music file.

Manifests one and only one SourceInstantiation.

Generated by an Encoder and validated against a SourceInstantiation by a Validator.

file_type¶: models.CharField – The format of this SymbolicMusicFile

file_size¶: models.PositiveIntegerField – The size of the this SymbolicMusicFile in bytes

version¶: models.CharField – The version of the encoding schema of this SymbolicMusicFile

encoding_date¶: models.DateTimeField – The date this SymbolicMusicFile was encoded

encoded_with¶: models.ForeignKey – A reference to the Encoder of this SymbolicMusicFile

validated_by¶: models.ForeignKey – A reference to the Validator of this SymbolicMusicFile

extra_metadata¶: django.contrib.postgres.fields.JSONField – Any extra metadata associated with this SymbolicMusicFile

manifests¶: ForeignKey – The SourceInstantiation manifested by this SymbolicMusicFile

file¶: models.FileField – The path to the actual file stored on disk

in_corpora¶: models.ManyToManyRel – References to the ResearchCorpora that contain this SymbolicMusicFile

features¶: models.ManyToOneRel – References to the ExtractedFeatures of this SymbolicMusicFile

instruments_used¶: models.ManyToManyRel – References to the Instruments declared in this SymbolicMusicFile

See also

database.models.File: The super class of SymbolicMusicFile

database.models.CustomBaseModel, database.models.SourceInstantiation, database.models.Encoder, database.models.Validator

Attributes Summary

`encoded_with`	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.
`features`	Accessor to the related objects manager on the reverse side of a many-to-one relation.
`file`	The descriptor for the file attribute on the model instance.
`histograms`	Return all histograms (multi-dimensional features)
`id`	A wrapper for a deferred-loading field.
`in_corpora`	Accessor to the related objects manager on the forward and reverse sides of a many-to-many relation.
`instruments_used`	Accessor to the related objects manager on the forward and reverse sides of a many-to-many relation.
`manifests`	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.
`manifests_id`	A wrapper for a deferred-loading field.
`objects`
`one_dimensional_features`	Return all the one dimensional features of this file
`validated_by`	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

Methods Summary

`get_next_by_date_created`(*[, field, is_next])
`get_next_by_date_updated`(*[, field, is_next])
`get_previous_by_date_created`(*[, field, is_next])
`get_previous_by_date_updated`(*[, field, is_next])

Attributes Documentation

encoded_with

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

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

Child.parent is a ForwardManyToOneDescriptor instance.

features

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.

file

The descriptor for the file attribute on the model instance. Return a FieldFile when accessed so you can write code like:

>>> from myapp.models import MyModel
>>> instance = MyModel.objects.get(pk=1)
>>> instance.file.size

Assign a file object on assignment so you can do:

>>> with open('/path/to/hello.world', 'r') as f:
...     instance.file = File(f)

histograms¶: Return all histograms (multi-dimensional features)

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

in_corpora

Accessor to the related objects manager on the forward and reverse sides of a many-to-many relation.

In the example:

class Pizza(Model):
    toppings = ManyToManyField(Topping, related_name='pizzas')

Pizza.toppings and Topping.pizzas are ManyToManyDescriptor instances.

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

instruments_used

Accessor to the related objects manager on the forward and reverse sides of a many-to-many relation.

In the example:

class Pizza(Model):
    toppings = ManyToManyField(Topping, related_name='pizzas')

Pizza.toppings and Topping.pizzas are ManyToManyDescriptor instances.

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

manifests

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

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

Child.parent is a ForwardManyToOneDescriptor instance.

manifests_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>¶

one_dimensional_features¶: Return all the one dimensional features of this file

validated_by

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

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

Child.parent is a ForwardManyToOneDescriptor instance.

Methods Documentation

get_next_by_date_created(*, field=<django.db.models.fields.DateTimeField: date_created>, is_next=True, **kwargs)¶

get_next_by_date_updated(*, field=<django.db.models.fields.DateTimeField: date_updated>, is_next=True, **kwargs)¶

get_previous_by_date_created(*, field=<django.db.models.fields.DateTimeField: date_created>, is_next=False, **kwargs)¶

get_previous_by_date_updated(*, field=<django.db.models.fields.DateTimeField: date_updated>, is_next=False, **kwargs)¶