owmeta_core.custom_dataobject_property module

class owmeta_core.custom_dataobject_property.CustomProperty(*args, **kwargs)

Bases: Contextualizable, DataUser

Store a value associated with a DataObject

Properties can be be accessed like methods. A method call like:

a.P()

for a property P will return values appropriate to that property for a, the owner of the property.

Parameters

ownerowmeta_core.dataobject.DataObject

The owner of this property

namestr

The name of this property. Can be accessed as an attribute like:

owner.name

get(*args)

Get the things which are on the other side of this property

The return value must be iterable. For a get that just returns a single value, an easy way to make an iterable is to wrap the value in a tuple like (value,).

Derived classes must override.

get_terms(*args)

Get the things which are on the other side of this property

The return value must be iterable. For a get that just returns a single value, an easy way to make an iterable is to wrap the value in a tuple like (value,).

Derived classes must override.

has_value()

Returns true if the CustomProperty has any values set on it.

This may be defined differently for each property

one()

Returns a single value for the CustomProperty whether or not it is multivalued.

set(*args, **kwargs)

Set the value of this property

Derived classes must override.