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Feature/allow csw constraints #192

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Feature/allow csw constraints #192

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3d24ddc
add ogc:Filter constraints to gather stage in CSW harvester
knudmoeller Nov 20, 2017
da705a1
add documentation for get_constraints()
knudmoeller Nov 20, 2017
9cf1b27
pass harvest_job to get_constraints
knudmoeller Dec 4, 2017
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8 changes: 7 additions & 1 deletion ckanext/spatial/harvesters/csw.py
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Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,12 @@ def get_original_url(self, harvest_object_id):
def output_schema(self):
return 'gmd'

def get_constraints(self, harvest_job):
'''Returns the CSW constraints that should be used during gather stage.
Should be overwritten by sub-classes.
'''
return []

def gather_stage(self, harvest_job):
log = logging.getLogger(__name__ + '.CSW.gather')
log.debug('CswHarvester gather_stage for job: %r', harvest_job)
Expand Down Expand Up @@ -92,7 +98,7 @@ def gather_stage(self, harvest_job):
log.debug('Starting gathering for %s' % url)
guids_in_harvest = set()
try:
for identifier in self.csw.getidentifiers(page=10, outputschema=self.output_schema(), cql=cql):
for identifier in self.csw.getidentifiers(page=10, outputschema=self.output_schema(), cql=cql, constraints=self.get_constraints(harvest_job)):
try:
log.info('Got identifier %s from the CSW', identifier)
if identifier is None:
Expand Down
3 changes: 1 addition & 2 deletions ckanext/spatial/lib/csw_client.py
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Expand Up @@ -101,9 +101,8 @@ def getrecords(self, qtype=None, keywords=[],

def getidentifiers(self, qtype=None, typenames="csw:Record", esn="brief",
keywords=[], limit=None, page=10, outputschema="gmd",
startposition=0, cql=None, **kw):
startposition=0, cql=None, constraints=[], **kw):
from owslib.csw import namespaces
constraints = []
csw = self._ows(**kw)

if qtype is not None:
Expand Down