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knora.py
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knora.py
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from typing import List, Set, Dict, Tuple, Optional
from urllib.parse import quote_plus
from rdflib import Graph
from lxml import etree
import requests
import json
import urllib
import pprint
import validators
import re
from rfc3987 import parse
from pprint import pprint
# TODO: recheck all the documentation of this file
"""
Properties in knora-api:
- :hasValue
- :hasColor
- :hasComment
- :hasGeometry
- :hasLinkTo
- :isPartOf
- :isRegionOf
- :isAnnotationOf
- :seqnum
Classes in knora-api:
- :Resource
- :StillImageRepresentation
- :TextRepresentation
- :AudioRepresentation
- :DDDRepresentation
- :DocumentRepresentation
- :MovingImageRepresentation
- :Annotation -> :hasComment, :isAnnotationOf, :isAnnotationOfValue
- :LinkObj -> :hasComment, :hasLinkTo, :hasLinkToValue
- :LinkValue [reification node]
- :Region -> :hasColor, :isRegionOf, :hasGeometry, :isRegionOfValue, :hasComment
For lists:
- :ListNode -> :hasSubListNode, :listNodePosition, :listNodeName, :isRootNode, :hasRootNode, :attachedToProject
Values in knora-api:
- :Value
- :TextValue -> :SimpleText, :TextArea
- :ColorValue -> :Colorpicker
- :DateValue -> :Date
- :DecimalValue -> :SimpleText
- :GeomValue -> :Geometry
- :GeonameValue -> :Geonames
- :IntValue -> :SimpleText, :Spinbox, :Slider
- :BooleanValue -> :Checkbox
- :UriValue -> :SimpleText
- :IntervalValue
- :ListValue -> :Pulldown
GUI elements
- :Colorpicker -> ncolors=integer
- :Date
- :Geometry
- :Geonames
- :Interval
- :List -> hlist(required)=<iri>
- :Pulldown -> hlist(required)=<iri>
- :Radio -> hlist(required)=<iri>
- :Richtext
- :Searchbox -> numprops=integer
- :SimpleText -> maxlength=integer, size=integer
- :Slider -> max(required)=decimal, min(required)=decimal
- :Spinbox -> max=decimal, min=decimal
- :Textarea -> cols=integer, rows=integer, width=percent, wrap=string(soft|hard)
- :Checkbox
- :Fileupload
"""
class KnoraError(Exception):
"""Handles errors happening in this file"""
def __init__(self, message):
self.message = message
class Knora:
"""
This is the main class which holds all the methods for communication with the Knora backend.
"""
def __init__(self, server: str, prefixes: Dict[str, str] = None):
"""
Constructor requiring the server address, the user and password of KNORA
:param server: Address of the server, e.g https://api.dasch.swiss
:param prefixes: Ontology prefixes used
"""
self.server = server
self.prefixes = prefixes
def login(self, email: str, password: str):
"""
Method to login into KNORA which creates a session token.
:param email: Email of user, e.g., root@example.com
:param password: Password of the user, e.g. test
"""
credentials = {
"email": email,
"password": password
}
jsondata = json.dumps(credentials)
req = requests.post(
self.server + '/v2/authentication',
headers={'Content-Type': 'application/json; charset=UTF-8'},
data=jsondata
)
self.on_api_error(req)
result = req.json()
self.token = result["token"]
def get_token(self):
return self.token
def logout(self):
req = requests.delete(
self.server + '/v2/authentication',
headers={'Authorization': 'Bearer ' + self.token}
)
self.on_api_error(req)
self.token = None
def __del__(self):
self.logout()
def on_api_error(self, res):
"""
Method to check for any API errors
:param res: The input to check, usually JSON format
:return: Possible KnoraError that is being raised
"""
if (res.status_code != 200):
raise KnoraError("KNORA-ERROR: status code=" + str(res.status_code) + "\nMessage:" + res.text)
if 'error' in res:
raise KnoraError("KNORA-ERROR: API error: " + res.error)
def get_existing_projects(self, full: bool = False):
"""Returns a list of existing projects
:return: List of existing projects
"""
req = requests.get(self.server + '/admin/projects',
headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
result = req.json()
if 'projects' not in result:
raise KnoraError("KNORA-ERROR:\n Request got no projects!")
else:
if full:
return result['projects']
else:
return list(map(lambda a: a['id'], result['projects']))
def get_project(self, shortcode: str) -> dict:
"""Returns project data of given project
:param shortcode: Shortcode of object
:return: JSON containing the project information
"""
url = self.server + '/admin/projects/shortcode/' + shortcode
req = requests.get(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
result = req.json()
return result["project"]
def project_exists(self, proj_iri: str):
"""Checks if a given project exists
:return: Boolean
"""
projects = self.get_existing_projects()
return proj_iri in projects
def create_project(
self,
shortcode: str,
shortname: str,
longname: str,
descriptions: Optional[Dict[str, str]] = None,
keywords: Optional[List[str]] = None,
logo: Optional[str] = None) -> str:
"""
Create a new project
:param shortcode: Dedicated shortcode of project
:param shortname: Short name of the project (e.g acronym)
:param longname: Long name of project
:param descriptions: Dict of the form {lang: descr, …} for the description of the project [Default: None]
:param keywords: List of keywords
:param logo: Link to the project logo [default: None]
:return: Project IRI
"""
descriptions = list(map(lambda p: {"language": p[0], "value": p[1]}, descriptions.items()))
project = {
"shortname": shortname,
"shortcode": shortcode,
"longname": longname,
"description": descriptions,
"keywords": keywords,
"logo": logo,
"status": True,
"selfjoin": False
}
jsondata = json.dumps(project)
req = requests.post(self.server + "/admin/projects",
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return res["project"]["id"]
def update_project(
self,
shortcode: str,
shortname: Optional[str] = None,
longname: Optional[str] = None,
descriptions: Optional[Dict[str, str]] = None,
keywords: Optional[List[str]] = None,
logo: Optional[str] = None) -> str:
"""
:param shortcode:
:param shortname:
:param longname:
:param descriptions:
:param keywords:
:param logo:
:return:
"""
descriptions = list(map(lambda p: {"language": p[0], "value": p[1]}, descriptions.items()))
project = {
"longname": longname,
"description": descriptions,
"keywords": keywords,
"logo": logo,
"status": True,
"selfjoin": False
}
jsondata = json.dumps(project)
url = self.server + '/admin/projects/iri/' + quote_plus("http://rdfh.ch/projects/" + shortcode)
req = requests.put(url,
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return res['project']['id']
def get_users(self):
"""
Get a list of all users
:return:
"""
url = self.server + '/admin/users'
req = requests.get(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
res = req.json()
return res['users']
def get_user(self, user_iri: str):
"""
Get a list of all users
:return:
"""
url = self.server + '/admin/users/iri/' + quote_plus(user_iri)
req = requests.get(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
res = req.json()
return res['user']
def create_user(self,
username: str,
email: str,
givenName: str,
familyName: str,
password: str,
lang: str = "en"):
"""
Create a new user
:param username: The username for login purposes (must be unique)
:param email: The email address of the user
:param givenName: The given name (surname, "Vorname", ...)
:param familyName: The family name
:param password: The password for the user
:param lang: language code, either "en", "de", "fr", "it" [default: "en"]
:return: The user ID as IRI
"""
userinfo = {
"username": username,
"email": email,
"givenName": givenName,
"familyName": familyName,
"password": password,
"status": True,
"lang": lang,
"systemAdmin": False
}
jsondata = json.dumps(userinfo)
url = self.server + '/admin/users'
req = requests.post(url,
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return res['user']['id']
def add_user_to_project(self, user_iri: str, project_iri: str):
print("USER: " + user_iri)
print("PROJECT: " + project_iri)
url = self.server + '/admin/users/iri/' + quote_plus(user_iri) + '/project-memberships/' + quote_plus(project_iri)
print(url)
req = requests.post(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
return None
def get_existing_ontologies(self):
"""
:return: Returns the metadata of all existing ontologies on v2/ontologies
"""
req = requests.get(self.server + '/v2/ontologies/metadata',
headers={'Authorization': 'Bearer ' + self.token})
result = req.json()
if not '@graph' in result:
raise KnoraError("KNORA-ERROR:\n Request got no graph!")
else:
names = list(map(lambda a: a['@id'], result['@graph']))
return names
def get_project_ontologies(self, project_code: str) -> Optional[dict]:
"""
:param project_code:
:return:
"""
proj = quote_plus("http://rdfh.ch/projects/" + project_code)
req = requests.get(self.server + "/v2/ontologies/metadata/" + proj,
headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
result = req.json()
if '@graph' in result: # multiple ontologies
ontos = list(map(lambda a: {
'iri': a['@id'],
'label': a['rdfs:label'],
'moddate': a.get('knora-api:lastModificationDate')
}, result['@graph']))
return ontos
elif '@id' in result: # single ontology
return [{
'iri': result['@id'],
'label': result['rdfs:label'],
'moddate': result.get('knora-api:lastModificationDate')
}]
else:
return None
def ontology_exists(self, onto_iri: str):
"""
Checks if an ontology exists
:param onto_iri: The possible ontology iri
:return: boolean
"""
ontos = self.get_existing_ontologies()
return onto_iri in ontos
def get_ontology_lastmoddate(self, onto_iri: str):
"""
Retrieves the lastModificationDate of a Ontology
:param onto_iri: The ontology to retrieve the lastModificationDate from.
:return: The lastModificationDate if it exists. Else, this method returns a dict with (id, None). If the ontology does not exist, it return None.
"""
req = requests.get(self.server + '/v2/ontologies/metadata',
headers={'Authorization': 'Bearer ' + self.token})
result = req.json()
all_ontos = {}
for onto in result['@graph']:
if 'knora-api:lastModificationDate' in onto:
all_ontos.__setitem__(onto['@id'], onto['knora-api:lastModificationDate'])
else :
all_ontos.__setitem__(onto['@id'], None)
return all_ontos[onto_iri]
def create_ontology(self,
onto_name: str,
project_iri: str,
label: str) -> Dict[str, str]:
"""
Create a new ontology
:param onto_name: Name of the omntology
:param project_iri: IRI of the project
:param label: A label property for this ontology
:return: Dict with "onto_iri" and "last_onto_date"
"""
ontology = {
"knora-api:ontologyName": onto_name,
"knora-api:attachedToProject": {
"@id": project_iri
},
"rdfs:label": label,
"@context": {
"rdfs": 'http://www.w3.org/2000/01/rdf-schema#',
"knora-api": 'http://api.knora.org/ontology/knora-api/v2#'
}
}
jsondata = json.dumps(ontology)
req = requests.post(self.server + "/v2/ontologies",
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
#TODO: return also ontology name
return {"onto_iri": res['@id'], "last_onto_date": res['knora-api:lastModificationDate']}
def delete_ontology(self, onto_iri: str, last_onto_date = None):
"""
A method to delete an ontology from /v2/ontologies
:param onto_iri: The ontology to delete
:param last_onto_date: the lastModificationDate of an ontology. None by default
:return:
""""" #TODO: add return documentation
url = self.server + "/v2/ontologies/" + urllib.parse.quote_plus(onto_iri)
req = requests.delete(url,
params={"lastModificationDate": last_onto_date},
headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
res = req.json()
return res
def get_ontology_graph(self,
shortcode: str,
name: str):
"""
Returns the turtle definition of the ontology.
:param shortcode: Shortcode of the project
:param name: Name of the ontology
:return:
"""
url = self.server + "/ontology/" + shortcode + "/" + name + "/v2"
turtle = requests.get(url,
headers={"Accept": "text/turtle",
'Authorization': 'Bearer ' + self.token})
self.on_api_error(turtle)
return turtle.text
def create_res_class(self,
onto_iri: str,
onto_name: str,
last_onto_date: str,
class_name: str,
super_class: List[str],
labels: Dict[str, str],
comments: Optional[Dict[str, str]] = None) -> Dict[str, str]:
"""Creates a knora resource class
:param onto_iri: IRI of the ontology
:param onto_name: Name of the ontology
:param last_onto_date: Last modification date as returned by last call
:param class_name: Name of the class to be created
:param super_class: List of super classes
:param labels: Dict with labels in the form { lang: labeltext }
:param comments: Dict with comments in the form { lang: commenttext }
:return: Dict with "class_iri" and "last_onto_date"
"""
#
# using map and iterable to get the proper format
#
labels = list(map(lambda p: {"@language": p[0], "@value": p[1]}, labels.items()))
if not comments:
comments = {"en": "none"}
#
# using map and iterable to get the proper format
#
comments = list(map(lambda p: {"@language": p[0], "@value": p[1]}, comments.items()))
res_class = {
"@id": onto_iri,
"@type": "owl:Ontology",
"knora-api:lastModificationDate": last_onto_date,
"@graph": [{
"@id": onto_name + ":" + class_name,
"@type": "owl:Class",
"rdfs:label": labels,
"rdfs:comment": comments,
"rdfs:subClassOf": {
"@id": super_class
}
}],
"@context": {
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"knora-api": "http://api.knora.org/ontology/knora-api/v2#",
"owl": "http://www.w3.org/2002/07/owl#",
"rdfs": "http://www.w3.org/2000/01/rdf-schema#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
onto_name: onto_iri + "#"
}
}
jsondata = json.dumps(res_class, indent=3, separators=(',', ': '))
req = requests.post(self.server + "/v2/ontologies/classes",
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return {"class_iri": res['@graph'][0]['@id'], "last_onto_date": res['knora-api:lastModificationDate']}
def create_property(
self,
onto_iri: str,
onto_name: str,
last_onto_date: str,
prop_name: str,
super_props: List[str],
labels: Dict[str, str],
gui_element: str,
gui_attributes: List[str] = None,
subject: Optional[str] = None,
object: Optional[str] = None,
comments: Optional[Dict[str, str]] = None
) -> Dict[str, str]:
"""Create a Knora property
:param onto_iri: IRI of the ontology
:param onto_name: Name of the Ontology (prefix)
:param last_onto_date: Last modification date as returned by last call
:param prop_name: Name of the property
:param super_props: List of super-properties
:param labels: Dict with labels in the form { lang: labeltext }
:param gui_element: Valid GUI-Element
:param gui_attributes: Valid GUI-Attributes (or None
:param subject: Full name (prefix:name) of subject resource class
:param object: Full name (prefix:name) of object resource class
:param comments: Dict with comments in the form { lang: commenttext }
:return: Dict with "prop_iri" and "last_onto_date" keys
"""
#
# using map and iterable to get the proper format
#
labels = list(map(lambda p: {"@language": p[0], "@value": p[1]}, labels.items()))
if not comments:
comments = {"en": "none"}
#
# using map and iterable to get the proper format
#
comments = list(map(lambda p: {"@language": p[0], "@value": p[1]}, comments.items()))
additional_context = {}
for sprop in super_props:
pp = sprop.split(':')
if pp[0] != "knora-api":
additional_context[pp[0]] = self.prefixes[pp[0]]
#
# using map and iterable to get the proper format
#
super_props = list(map(lambda x: {"@id": x}, super_props))
if len(super_props) == 1:
super_props = super_props[0]
propdata = {
"@id": onto_name + ":" + prop_name,
"@type": "owl:ObjectProperty",
"rdfs:label": labels,
"rdfs:comment": comments,
"rdfs:subPropertyOf": super_props,
"salsah-gui:guiElement": {
"@id": gui_element
}
}
if subject:
propdata["knora-api:subjectType"] = {
"@id": subject
}
if object:
propdata["knora-api:objectType"] = {
"@id": object
}
if gui_attributes:
propdata["salsah-gui:guiAttribute"] = gui_attributes
property = {
"@id": onto_iri,
"@type": "owl:Ontology",
"knora-api:lastModificationDate": last_onto_date,
"@graph": [
propdata
],
"@context": {
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"knora-api": "http://api.knora.org/ontology/knora-api/v2#",
"salsah-gui": "http://api.knora.org/ontology/salsah-gui/v2#",
"owl": "http://www.w3.org/2002/07/owl#",
"rdfs": "http://www.w3.org/2000/01/rdf-schema#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
onto_name: onto_iri + "#"
}
}
property["@context"].update(additional_context)
jsondata = json.dumps(property, indent=3, separators=(',', ': '))
req = requests.post(self.server + "/v2/ontologies/properties",
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return {"prop_iri": res['@graph'][0]['@id'], "last_onto_date": res['knora-api:lastModificationDate']}
def create_cardinality(
self,
onto_iri: str,
onto_name: str,
last_onto_date: str,
class_iri: str,
prop_iri: str,
occurrence: str
) -> Dict[str, str]:
"""Add a property with a given cardinality to a class
:param onto_iri: IRI of the ontology
:param onto_name: Name of the ontology (prefix)
:param last_onto_date: Last modification date as returned by last call
:param class_iri: IRI of the class to which the property will be added
:param prop_iri: IRI of the property that should be added
:param occurrence: Occurrence: "1", "0-1", "0-n" or "1-n"
:return: Dict with "last_onto_date" key
"""
switcher = {
"1": ("owl:cardinality", 1),
"0-1": ("owl:maxCardinality", 1),
"0-n": ("owl:minCardinality", 0),
"1-n": ("owl:minCardinality", 1)
}
occurrence = switcher.get(occurrence)
if not occurrence:
KnoraError("KNORA-ERROR:\n Invalid occurrence!")
cardinality = {
"@id": onto_iri,
"@type": "owl:Ontology",
"knora-api:lastModificationDate": last_onto_date,
"@graph": [{
"@id": class_iri,
"@type": "owl:Class",
"rdfs:subClassOf": {
"@type": "owl:Restriction",
occurrence[0]: occurrence[1],
"owl:onProperty": {
"@id": prop_iri
}
}
}],
"@context": {
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"knora-api": "http://api.knora.org/ontology/knora-api/v2#",
"owl": "http://www.w3.org/2002/07/owl#",
"rdfs": "http://www.w3.org/2000/01/rdf-schema#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
onto_name: onto_iri + "#"
}
}
jsondata = json.dumps(cardinality, indent=3, separators=(',', ': '))
req = requests.post(self.server + "/v2/ontologies/cardinalities",
headers={'Content-Type': 'application/ld+json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
return {"last_onto_date": res["knora-api:lastModificationDate"]}
def create_list_node(self,
project_iri: str,
labels: Dict[str, str],
comments: Optional[Dict[str, str]] = None,
name: Optional[str] = None,
parent_iri: Optional[str] = None) -> str:
"""
Creates a new list node. If there is no parent, a root node is created
:param project_iri: IRI of the project
:param labels: Dict in the form {lang: label, …} giving the label(s)
:param comments: Dict in the form {lang: comment, …} giving the comment(s)
:param name: Name of the list node
:param parent_iri: None for root node (or omit), otherwise IRI of parent node
:return: IRI of list node
"""
#
# using map and iterable to get the proper format
#
labels = list(map(lambda p: {"language": p[0], "value": p[1]}, labels.items()))
listnode = {
"projectIri": project_iri,
"labels": labels,
}
#
# using map and iterable to get the proper format
#
if comments is not None:
listnode["comments"] = list(map(lambda p: {"language": p[0], "value": p[1]}, comments.items()))
else:
listnode["comments"] = []
if name is not None:
listnode["name"] = name
if parent_iri is not None:
listnode["parentNodeIri"] = parent_iri
url = self.server + "/admin/lists/" + quote_plus(parent_iri)
else:
url = self.server + "/admin/lists"
jsondata = json.dumps(listnode, indent=3, separators=(',', ': '))
req = requests.post(url,
headers={'Content-Type': 'application/json; charset=UTF-8',
'Authorization': 'Bearer ' + self.token},
data=jsondata)
self.on_api_error(req)
res = req.json()
if parent_iri is not None:
return res['nodeinfo']['id']
else:
return res['list']['listinfo']['id']
def get_lists(self, shortcode: str):
"""
Get the lists belonging to a certain project identified by its shortcode
:param shortcode: Project shortcode
:return: JSON with the lists
"""
url = self.server + "/admin/lists?projectIri=" + quote_plus("http://rdfh.ch/projects/" + shortcode)
req = requests.get(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
return req.json()
def get_complete_list(self, list_iri: str):
"""
Get all the data (nodes) of a specific list
:param list_iri: IRI of the list
:return: JSON containing the list info including all nodes
"""
url = self.server + "/admin/lists/" + quote_plus(list_iri)
req = requests.get(url, headers={'Authorization': 'Bearer ' + self.token})
self.on_api_error(req)
return req.json()
def create_resource(self, schema: Dict, res_class: str, label: str, values: Dict, stillimage = None):
"""
This method creates a new resource (instance of a resource class) with the
default permissions.
:param schema: The schema of the ontology as returned by the method "create_schema()"
:param res_class: The resource class of the resource to be created
:param label: The "rdfs:label" to be given to the new resource
:param values: A dict with the property values. It has the form
{ property_name: value, property_name: value,… } or { property_name: [value1, value2,…],… }
The format of the values depends on the value types. E.g. a calendar date has the form
"GREGORIAN:CE:1920-03-12:CE:1921:05:21" where all values except the start year are optional.
:param stillimage: Path to a still image...
:return: A dict in the form { 'iri': resource_iri, 'ark': ark_id, 'vark': dated_ark_id }
"""
ontoname = schema["ontoname"]
props = schema['resources'][res_class] # this is an array of all properties defined in the ontology
# we start building the dict that will be transformed into the JSON-LD
jsondata = {
'@type': ontoname + ":" + res_class,
'rdfs:label': label,
"knora-api:attachedToProject": {
"@id": schema['proj_iri']
}
}
if stillimage is not None:
jsondata["knora-api:hasStillImageFileValue"] = {
"@type": "knora-api:StillImageFileValue",
"knora-api:fileValueHasFilename": stillimage
}
def create_valdict(val):
"""
Internal function to create the JSON-LD for one value
:param val: the value
:return: Dict propared for the JSON-LD for one value
"""
if type(val) is dict:
comment = val.get('comment')
permissions = val.get('permissions')
val = val.get('value')
else:
comment = None
permissions = None
valdict = {
'@type': 'knora-api:' + prop["otype"]
}
if comment is not None:
valdict["knora-api:valueHasComment"] = comment
if prop["otype"] == "TextValue":
#
# a normal text value without markup
#
valdict['knora-api:valueAsString'] = str(val)
elif prop["otype"] == "ColorValue":
#
# a color value as used in HTML (e.g. "#aaccff"
#
res = re.match('^#(?:[0-9a-fA-F]{3}){1,2}$', str(val))
if res is None:
raise KnoraError("Invalid ColorValue format! " + str(val))
valdict['knora-api:colorValueAsColor'] = str(val)
elif prop["otype"] == "DateValue":
#
# A knora date value
#
res = re.match('(GREGORIAN:|JULIAN:)?(CE:|BCE:)?(\d{4})?(-\d{1,2})?(-\d{1,2})?(:CE|:BCE)?(:\d{4})?(-\d{1,2})?(-\d{1,2})?',
str(val))
if res is None:
raise KnoraError("Invalid date format! " + str(val))
dp = res.groups()
calendar = 'GREGORIAN' if dp[0] is None else dp[0].strip('-: ')
e1 = 'CE' if dp[1] is None else dp[1].strip('-: ')
y1 = None if dp[2] is None else int(dp[2].strip('-: '))
m1 = None if dp[3] is None else int(dp[3].strip('-: '))
d1 = None if dp[4] is None else int(dp[4].strip('-: '))
e2 = 'CE' if dp[5] is None else dp[5].strip('-: ')
y2 = None if dp[6] is None else int(dp[6].strip('-: '))
m2 = None if dp[7] is None else int(dp[7].strip('-: '))
d2 = None if dp[8] is None else int(dp[8].strip('-: '))
if y1 is None:
raise KnoraError("Invalid date format! " + str(val))
if y2 is not None:
date1 = y1 * 10000
if m1 is not None:
date1 += m1 * 100
if d1 is not None:
date1 += d1
date2 = y2 * 10000
if m2 is not None:
date2 += m2 * 100
if d1 is not None:
date2 += d2
if date1 > date2:
y1, y2 = y2, y1
m1, m2 = m2, m1
d1, d2 = d2, d1
valdict["knora-api:dateValueHasCalendar"] = calendar
valdict["knora-api:dateValueHasStartEra"] = e1
valdict["knora-api:dateValueHasStartYear"] = int(y1)
if m1 is not None:
valdict["knora-api:dateValueHasStartMonth"] = int(m1)
if d1 is not None:
valdict["knora-api:dateValueHasStartDay"] = int(d1)
valdict["knora-api:dateValueHasEndEra"] = e2
if y2 is not None:
valdict["knora-api:dateValueHasEndYear"] = int(y2)
else:
valdict["knora-api:dateValueHasEndYear"] = int(y1)
if m2 is not None:
valdict["knora-api:dateValueHasEndMonth"] = int(m2)
if d2 is not None:
valdict["knora-api:dateValueHasEndDay"] = int(d2)
elif prop["otype"] == "DecimalValue":
#
# a decimal value
#
valdict['knora-api:decimalValueAsDecimal'] = {
'@type': 'xsd:decimal',
'@value': str(val)
}
elif prop["otype"] == "GeomValue":
#
# A geometry ID
#
valdict['knora-api:geometryValueAsGeometry'] = str(val)
elif prop["otype"] == "GeonameValue":
#
# A geoname ID
#
valdict['knora-api:geonameValueAsGeonameCode'] = str(val)
elif prop["otype"] == "IntValue":
#
# an integer value
#
valdict['knora-api:intValueAsInt'] = int(val)
elif prop["otype"] == "BooleanValue":
#
# a boolean value
#
valdict['knora-api:booleanValueAsBoolean']: bool(val)
elif prop["otype"] == "UriValue":
#
# an URI
#
valdict['knora-api:uriValueAsUri'] = {
"@type": "xsd:anyURI",
"@value": str(val)
}
elif prop["otype"] == "IntervalValue":
#
# an interval in the form "1.356:2.456"
#
iv = val.split(':')
valdict["knora-api:intervalValueHasEnd"] = {
"@type": "xsd:decimal",
"@value": str(iv[0])
}
valdict["knora-api:intervalValueHasStart"] = {
"@type": "xsd:decimal",
"@value": str(iv[1])
}
elif prop["otype"] == "ListValue":