def _new_coverage(self, coverage_data):
"""
Build a new database coverage object from the given data.
"""
new_coverage = DatabaseCoverage(coverage_data, self._palette)
new_coverage.update_metadata(self.metadata)
new_coverage.refresh()
return new_coverage
def _build_coverage(self, coverage_base, coverage_data):
"""
Build a new database coverage object from the given data.
"""
# initialize a new database-wide coverage object for this data
new_coverage = DatabaseCoverage(coverage_base, coverage_data,
self._palette)
# map the coverage data using the database metadata
new_coverage.update_metadata(self.metadata)
new_coverage.refresh()
return new_coverage
def update_coverage(self, coverage_name, coverage_data, coverage_filepath=None):
"""
Create or update a databases coverage mapping.
"""
assert not (coverage_name in RESERVED_NAMES)
updating_coverage = coverage_name in self.coverage_names
if updating_coverage:
logger.debug("Updating coverage %s" % coverage_name)
else:
logger.debug("Adding coverage %s" % coverage_name)
# create a new database coverage mapping from the given coverage data
new_coverage = DatabaseCoverage(
self._palette,
coverage_name,
coverage_filepath,
coverage_data
)
new_coverage.update_metadata(self.metadata)
new_coverage.refresh()
#
# coverage mapping complete, looks like we're good. commit the new
# coverage to the director's coverage table and surface it for use.
#
# note that this will overwrite an existing coverage mapping present
# under the same name
#
self._commit_coverage(coverage_name, new_coverage)
# assign a shorthand alias (if available) to new coverage additions
if not updating_coverage:
self._request_shorthand_alias(coverage_name)
# notify any listeners that we have added or updated coverage
if updating_coverage:
self._notify_coverage_modified()
else:
self._notify_coverage_created()
# return the created/updated coverage
return new_coverage