Source code for modos.rdf
from linkml_runtime.loaders import json_loader
import rdflib
from .helpers.schema import (
get_slot_range,
instance_to_graph,
load_prefixmap,
load_schema,
)
from .helpers.schema import (
is_uri,
class_from_name,
)
[docs]
def attrs_to_graph(meta: dict, uri_prefix: str) -> rdflib.Graph:
"""Convert a attribute dictionary to an RDF graph of metadata."""
kg = rdflib.Graph()
for prefix in load_prefixmap().values():
kg.bind(prefix.prefix_prefix, prefix.prefix_reference, replace=True)
# Assuming the dict is flat, i.e. all subjects are top level
for subject, attrs in meta.items():
if not is_uri(subject):
subject = f"{uri_prefix}{subject}"
for key, value in attrs.items():
if key == "@type":
continue
# Check if slot value should be a URI
# we need to ensure it is one
slot_range = get_slot_range(key)
if not slot_range:
continue
uri_value = any(
[
"uri" in slot_range,
slot_range in load_schema().all_classes(),
key == "data_path",
]
)
if uri_value:
# multivalued slots have a list of values
if isinstance(value, list):
fixed = []
for item in value:
if is_uri(item):
fixed.append(item)
else:
fixed.append(f"{uri_prefix}{item}")
else:
if is_uri(value):
fixed = value
else:
fixed = f"{uri_prefix}{value}"
attrs[key] = fixed
attrs["id"] = subject
instance = json_loader.loads(
attrs,
target_class=class_from_name(attrs["@type"]),
)
kg += instance_to_graph(instance)
return kg