def encode_metadata(instance):
if instance is None:
return None
elif isinstance(instance, Metadata):
if instance.creators is None:
creators = None
else:
creators = []
for creator in instance.creators:
creators.append(encode_creator(creator))
if instance.titles is None:
titles = None
else:
titles = dict()
for key, value in instance.titles.items():
if value is not None:
titles[key] = value
if len(titles.keys()) is 0:
titles = None
temp_value = {
'creators': creators,
'handle': instance.handle,
'license': instance.license_identifier,
'publicationYear': instance.publication_year,
'publisher': instance.publisher,
'titles': titles,
'type': instance.resource_type
}
return remove_none_values(temp_value)
else:
type_name = instance.__class__.__name__
raise TypeError(f"Object of type {type_name} is not JSON serializable")
def encode_body(instance):
if isinstance(instance, Body):
temp_value = {
Constants.JSON_ATTRIBUTE_NAME_RESOURCE:
encode_resource(instance.resource)
}
return remove_none_values(temp_value)
else:
type_name = instance.__class__.__name__
raise TypeError(
f"Object of type '{type_name}' is not JSON serializable")
def encode_file_metadata(instance):
if isinstance(instance, FileMetadata):
temp_value = {
'filename': instance.filename,
'mimetype': instance.mime_type,
'checksum': instance.checksum,
'size': instance.size
}
return remove_none_values(temp_value)
else:
type_name = instance.__class__.__name__
raise TypeError(
f"Object of type '{type_name}' is not JSON serializable")
def encode_resource(instance):
if instance is None:
return None
if isinstance(instance, Resource):
temp_value = {
'resource_identifier': instance.resource_identifier,
'modifiedDate': instance.modified_date,
'createdDate': instance.created_date,
'metadata': encode_metadata(instance.metadata),
'files': encode_files(instance.files),
'owner': instance.owner,
'status': instance.status,
'publishedDate': instance.published_date,
'indexedDate': instance.indexed_date
}
return remove_none_values(temp_value)
else:
type_name = instance.__class__.__name__
raise TypeError(
f"Object of type '{type_name}' is not JSON serializable")