def get_filter_fes(filters, logical_operator=And):
"""Create filter encoding specification (OGC FES) object based on given
filters
:param Tupple.<dict> filters: tupple of filters
:param logical_operator: owslib.fes.And or owslib.fes.Or
:return: filter encoding specification
:rtype: owslib.fes.AND
"""
conditions = []
filter_request = None
for myfilter in filters:
value = myfilter['value']
if myfilter['operator'] == '=':
conditions.append(PropertyIsEqualTo(myfilter['attribute'], value))
elif myfilter['operator'] == '!=':
conditions.append(
PropertyIsNotEqualTo(myfilter['attribute'], value))
elif myfilter['operator'] == '~':
conditions.append(PropertyIsLike(myfilter['attribute'], value))
elif myfilter['operator'] == '>':
conditions.append(
PropertyIsGreaterThan(myfilter['attribute'], value))
elif myfilter['operator'] == '>=':
conditions.append(
PropertyIsGreaterThanOrEqualTo(myfilter['attribute'], value))
elif myfilter['operator'] == '<':
conditions.append(PropertyIsLessThan(myfilter['attribute'], value))
elif myfilter['operator'] == '<=':
conditions.append(
PropertyIsLessThanOrEqualTo(myfilter['attribute'], value))
elif myfilter['operator'] == 'BETWEEN':
conditions.append(
PropertyIsBetween(myfilter['attribute'], *value.split(',')))
elif myfilter['operator'] == 'BBOX':
bbox_filter = BBox(myfilter['value'], 'EPSG:3857')
conditions.append(bbox_filter)
elif myfilter['operator'] == 'IN':
new_filters = [{
'value': value,
'operator': '=',
'attribute': myfilter['attribute']}\
for value in value.split(',')]
conditions.append(get_filter_fes(new_filters, logical_operator=Or))
if len(conditions) > 1:
filter_request = logical_operator(conditions)
else:
filter_request = conditions[0]
return filter_request
def get_filepaths(self, collection_id: str, spatial_extent: List[float],
temporal_extent: List[str]) -> List[str]:
"""Retrieve a file list from the a CSW server according to the specified parameters.
Arguments:
collecion_id {str} -- identifier of the collection
spatial_extent {List[float]} -- bounding box [ymin, xmin, ymax, xmax]
temporal_extent {List[str]} -- e.g. ["2018-06-04", "2018-06-23"]
Returns:
list -- list of filepaths
"""
csw = CatalogueServiceWeb(self.csw_server_uri, timeout=300)
constraints = []
constraints.append(PropertyIsLike(self.group_property, collection_id))
# Spatial filter
constraints.append(BBox(spatial_extent))
# Temporal filter
constraints.append(
PropertyIsGreaterThan('apiso:TempExtent_begin',
temporal_extent[0]))
constraints.append(
PropertyIsLessThan('apiso:TempExtent_end', temporal_extent[1]))
# Run the query
csw.getrecords2(constraints=[constraints], maxrecords=100)
# Put found records in a variable (dictionary)
records0 = csw.records
# Sort records
records = []
for record in records0:
records.append(records0[record].references[0]['url'])
records = sorted(records)
return records
def filter_comp_less_than(self, **kwargs):
return PropertyIsLessThan(**kwargs)