core.xref¶

Cross references to database entries.

A cross reference points at one database entry for a term, e.g., the ChEBI web page for CHEBI:33699. RDFAnnotationData creates one cross reference per provider registered for a collection in the identifiers.org registry.

CrossReference `dataclass` ¶

CrossReference(name, accession, url)

A database cross reference.

Attributes:

Name	Type	Description
`name`	`str`	name of the resource, e.g., `ChEBI`
`accession`	`str`	term in the resource, e.g., `CHEBI:33699`
`url`	`str`	url of the entry in the resource

to_dict ¶

to_dict()

Convert the cross reference to a dictionary.

validate ¶

validate(warnings=True)

Check that the cross reference has a valid url.

Parameters:

Name	Type	Description	Default
`warnings`	`bool`	log a warning for an invalid url	`True`

Returns:

Type	Description
`bool`	True if the url is valid.

is_url ¶

is_url(url)

Check if a string is a valid http(s) or ftp url.