def importer(self, config_entity, db_entity, **kwargs):
"""
Replaces the normal ImportProcessor importer with one to import a sql from disk
"""
if InformationSchema.objects.table_exists(db_entity.schema, db_entity.table):
# The table already exists. Skip the import an log a warning
logger.warn("The target table for the feature table import already exists. Skipping table import.")
else:
# We don't store the upload_id alone, so pull it off the url
upload_id = db_entity.url.replace('file:///tmp/', '').replace('.sql.zip', '')
# Unpack the zipfile and return the path the sql file was placed at
if db_entity.url.startswith('file://'):
file_path = db_entity.url[len('file://'):]
logger.warn(file_path)
path = unpack_zipfile(file_path, upload_id)
# The file is always the name of the table defined therein
table_name = path.split('/')[-1].split('.')[0].lower()
db_entity.url = 'file://%s' % path
# Update the db_entity.url from the zip file url to the file_path
# This lets ImportData find it.
logger.info("Url of DbEntity is %s" % db_entity.url)
db_entity.save()
# Perform some sed updates to get the sql file ready for import
regex_substitutions = []
sql_file_path = file_url_to_path(db_entity.url)
# Add IF EXISTS to the drop table to prevent an error if IF EXISTS doesn't exist yet
regex_substitutions.append((r'DROP TABLE (?!IF EXISTS)', r'DROP TABLE IF EXISTS'))
# TODO temp, fix an AC bug. It seems that using a capitalized column is problematic (?)
# The suggested solution is to double quote it, but quotes cause other problems, so we simply lowercase
regex_substitutions.append((r' OGC_FID ', ' ogc_fid ', (4, 4))) # only line 4
regex_substitutions.append((r'PRIMARY KEY \(ogc_fid\)', 'PRIMARY KEY (ogc_fid)', (4, 4))) # only line 4
# TODO end temp fix
# Update the index name to include the schema. This format matches that created for preconfigured feature
# tables (see import_data.py)
spatial_index_name = '{schema}_{key}_geom_idx'.format(schema=db_entity.schema, key=db_entity.key)
regex_substitutions.append((r'CREATE INDEX ".*" ON', 'CREATE INDEX "%s" ON' % spatial_index_name, (6, 6))) # only line 6 6
# Remove the reference to the geometry_columns, since we use a materialized view
regex_substitutions.append((r'^DELETE FROM geometry_columns', '--DELETE FROM geometry_columns', (2, 2)))
# Update the sql to have a unique table name which matches the DbEntity key
# Also change public to our import schema to keep it from causing trouble in the public schema
# Otherwise we run into all kinds of trouble trying to get the SQL into the system
regex_substitutions.append((r'"public"."%s"' % table_name, '"import"."%s"' % db_entity.key))
regex_substitutions.append((r"'%s'" % table_name, "'%s'" % db_entity.key, (2, 5)))
regex_substitutions.append((r'"%s_pk"' % table_name, '"%s_pk"' % db_entity.key, (4, 4)))
# Update public to the import schema
regex_substitutions.append((r"AddGeometryColumn\('public'", "AddGeometryColumn('%s'" % settings.IMPORT_SCHEMA, (5, 5)))
regex_substitutions.append((r'"%s_wkb_geometry_geom_idx"' % table_name, '"%s_wkb_geometry_geom_idx"' % db_entity.key, (6, 6)))
for command in regex_substitutions:
logger.info("Applying the following substitution %s" % ', '.join(command[0:2]))
apply_regexes_to_file(sql_file_path, regex_substitutions)
ImportData(config_entity=config_entity, db_entity_key=db_entity.key).run()
# Add our normal primary key in the id column if negit eded
add_primary_key_if_needed(db_entity)
feature_class_creator = FeatureClassCreator(config_entity, db_entity)
# Inspect the imported table to create the feature_class_configuration
feature_class_configuration = feature_class_creator.feature_class_configuration_from_introspection()
# Merge the created feature_class_configuration with the on already defined for the db_entity
feature_class_creator.update_db_entity(feature_class_configuration)
logger.info("Finished import for DbEntity: %s, feature_class_configuration: %s" % (db_entity, db_entity.feature_class_configuration))
# Create association classes and tables and populate them with data
create_and_populate_relations(config_entity, feature_class_creator.db_entity)
