def is_cf_height_constrained(self, comp):
item_sn = metarelate.Item(('<http://def.scitools.org.uk/cfdatamodel/'
'standard_name>'),
'standard_name')
item_h = metarelate.Item(('<http://vocab.nerc.ac.uk/standard_name/'
'height>'),
'height')
snprop = metarelate.StatementProperty(item_sn, item_h)
item_u = metarelate.Item(('<http://def.scitools.org.uk/cfdatamodel/'
'units>'),
'units')
uprop = metarelate.StatementProperty(item_u,
metarelate.Item('"m"', 'm'))
pts_pred = metarelate.Item(('<http://def.scitools.org.uk/cfdatamodel/'
'points>'),
'points')
result = False
if self.is_cf_constrained(comp):
props = comp.dim_coord.component.properties
if len(props) == 3:
if snprop in props and uprop in props:
preds = [prop.predicate for prop in props]
if pts_pred in preds:
result = True
return result
def cfname(name, units):
"""Create a new Component for the CF name and units."""
# Fail if unit not udunits parseable
# checkunit = Unit(units)
standard_name = '{p}{c}'.format(p=pre['cfnames'], c=name)
req = requests.get(standard_name)
if req.status_code == 200:
name = standard_name
pred = '{}standard_name'.format(pre['cfmodel'])
else:
pred = '{}long_name'.format(pre['cfmodel'])
cfun = '{}units'.format(pre['cfmodel'])
if units == '1':
units = u'1'
acfuprop = metarelate.StatementProperty(metarelate.Item(cfun, 'units'),
metarelate.Item(units, units))
acfnprop = metarelate.StatementProperty(
metarelate.Item(pred,
pred.split('/')[-1]),
metarelate.Item(name,
name.split('/')[-1]))
cff = '{}Field'.format(pre['cfmodel'])
acfcomp = metarelate.Component(None, cff, [acfnprop, acfuprop])
return acfcomp
def property_cf_units():
data = '<http://def.scitools.org.uk/cfdatamodel/units>'
notation = 'units'
name = metarelate.Item(data, notation)
value = metarelate.Item('m s-1')
return metarelate.StatementProperty(name, value)
def property_um_stash():
data = '<http://reference.metoffice.gov.uk/um/f3/stash>'
notation = 'stash'
name = metarelate.Item(data, notation)
data = '<http://reference.metoffice.gov.uk/um/stash/m02s32i202>'
notation = 'm02s32i202'
value = metarelate.Item(data, notation)
return metarelate.StatementProperty(name, value)
def property2_cf_standard_name():
data = '<http://def.scitools.org.uk/cfdatamodel/standard_name>'
notation = 'standard_name'
predicate = metarelate.Item(data, notation)
data = '<http://vocab.nerc.ac.uk/standard_name/x_wind>'
notation = 'x_wind'
rdfobject = metarelate.Item(data, notation)
return metarelate.StatementProperty(predicate, rdfobject)
def property_cf_standard_name():
data = '<http://def.scitools.org.uk/cfdatamodel/standard_name>'
notation = 'standard_name'
predicate = metarelate.Item(data, notation)
data = '<http://vocab.nerc.ac.uk/standard_name/' \
'tendency_of_sea_ice_thickness_due_to_dynamics>'
notation = 'tendency_of_sea_ice_thickness_due_to_dynamics'
rdfobject = metarelate.Item(data, notation)
return metarelate.StatementProperty(predicate, rdfobject)
def grib2_comp(arecord, errs):
"""Create a new Component from the provided GRIB2 parameter. """
griburi = 'http://codes.wmo.int/grib2/codeflag/4.2/{d}-{c}-{i}'
griburi = griburi.format(d=arecord.disc, c=arecord.pcat, i=arecord.pnum)
req = requests.get(griburi)
if req.status_code != 200:
errs.append('unrecognised grib2 parameter code: {}'.format(griburi))
gpd = 'http://codes.wmo.int/def/grib2/parameterId'
agribprop = metarelate.StatementProperty(
metarelate.Item(gpd, 'grib2_parameter'), metarelate.Item(griburi))
gribmsg = 'http://codes.wmo.int/def/codeform/GRIB-message'
agribcomp = metarelate.Component(None, gribmsg, [agribprop])
return (agribcomp, errs)
def test_setattr(self):
prop = stock.property_cf_units()
ctype = '<http://def.scitools.org.uk/cfdatamodel/Field>'
acomp = metarelate.Component(None, com_type=ctype, properties=[prop])
data = '<http://def.scitools.org.uk/cfdatamodel/standard_name>'
notation = 'standard_name'
ptype = metarelate.Item(data, notation)
data = '<http://vocab.nerc.ac.uk/standard_name/x_wind'
notation = 'x_wind'
value = metarelate.Item(data, notation)
acomp.standard_name = metarelate.StatementProperty(ptype, value)
self.assertTrue(
isinstance(acomp.standard_name, metarelate.StatementProperty))
def stash_comp(stashmsi, errs):
"""Create a new Component from the provided stash code. """
stashuri = '{p}{c}'.format(p=pre['moStCon'], c=stashmsi)
headers = {
'content-type': 'application/ld+json',
'Accept': 'application/ld+json'
}
req = requests.get(stashuri, headers=headers)
if req.status_code != 200:
errs.append('unrecognised stash code: {}'.format(stashuri))
pred = metarelate.Item('{}stash'.format(pre['moumdpF3']), 'stash')
robj = metarelate.Item(stashuri, stashmsi)
astashprop = metarelate.StatementProperty(pred, robj)
ppff = '{}UMField'.format(pre['moumdpF3'])
astashcomp = metarelate.Component(None, ppff, [astashprop])
return (astashcomp, errs)
def retrieve_mapping_templates(self, sourcetype, targettype, service=None):
"""
return the format specific mappings for a particular source
and target component type
"""
if not isinstance(sourcetype, metarelate.Item):
sourcetype = metarelate.Item(sourcetype)
if not isinstance(targettype, metarelate.Item):
targettype = metarelate.Item(targettype)
if not (sourcetype.is_uri() and targettype.is_uri()):
raise ValueError('sourcetype and targettype must both be URIs')
qstr = ('SELECT ?mapping ?source ?target ?invertible ?inverted '
'''(GROUP_CONCAT(?valueMap; SEPARATOR = '&') AS ?valueMaps) '''
'WHERE { '
'GRAPH <http://metarelate.net/mappings.ttl> { { '
'?mapping mr:source ?source ; '
'mr:target ?target ; '
'mr:invertible ?invertible .'
'BIND("False" AS ?inverted) '
'OPTIONAL {?mapping mr:hasValueMap ?valueMap . } '
'MINUS {?mapping ^dc:replaces+ ?anothermap} '
'} UNION { '
'?mapping mr:source ?target ; '
' mr:target ?source ; '
' mr:invertible "True" . '
'BIND("True" AS ?inverted) '
'BIND("True" AS ?invertible) '
'OPTIONAL {?mapping mr:hasValueMap ?valueMap . } '
'MINUS {?mapping ^dc:replaces+ ?anothermap} '
'} } '
'GRAPH <http://metarelate.net/concepts.ttl> { '
'?source rdf:type %s . '
'?target rdf:type %s . '
'}} '
'GROUP BY ?mapping ?source ?target ?inverted ?invertible '
'ORDER BY ?mapping') % (sourcetype.data, targettype.data)
if service is not None:
qstr = ('SELECT ?mapping ?source ?target ?invertible ?inverted '
'?valueMaps '
'WHERE { '
"SERVICE <%s> {"
"%s"
"}}" % (service, qstr))
map_templates = self.run_query(qstr)
return json.dumps(map_templates)
def retrieve_mappings(self, sourcetype, targettype, service=None):
sourcetype = metarelate.Item(sourcetype)
targettype = metarelate.Item(targettype)
templates = self.retrieve_mapping_templates(sourcetype,
targettype,
service=service)
map_templates = json.loads(templates)
mapping_list = deque()
mapping_queue = Queue()
mq = 0
for mt in map_templates:
mapping_queue.put(
metarelate.Mapping(mt.get('mapping'),
invertible=mt.get('invertible'),
inverted=mt.get('inverted')))
mq += 1
for i in range(MAXTHREADS):
MappingPopulateWorker(mapping_queue, mapping_list, self,
service).start()
mapping_queue.join()
if len(mapping_list) != mq:
msg = '{} entries in mapping_list, expected {}'
raise ValueError(msg.format(len(mapping_list), mq))
return mapping_list
