def process(self) -> str:
"""
在这里提取矢量数据的元数据, 将元数据文件存储在self.file_content.work_root_dir下, 固定名称为self.FileName_MetaData, 注意返回的串中有元数据的格式
:return:
"""
result = super().process()
ds_metadata = CFactory().give_me_db(
self.file_info.db_server_id).one_row(
'''
select dsometadatatext, dsometadatajson, dsometadataxml
from dm2_storage_object
where dsoid = :object_id
''', {'object_id': self.object_id})
metadata_filename = CFile.join_file(
self.file_content.work_root_dir,
'{0}.metadata'.format(self.object_name))
text_metadata = ds_metadata.value_by_name(0, 'dsometadatatext', None)
json_metadata = ds_metadata.value_by_name(0, 'dsometadatajson', None)
xml_metadata = ds_metadata.value_by_name(0, 'dsometadataxml', None)
format_metadata = self.MetaDataFormat_Text
if json_metadata is not None:
format_metadata = self.MetaDataFormat_Json
CJson.str_2_file(json_metadata, metadata_filename)
elif xml_metadata is not None:
format_metadata = self.MetaDataFormat_XML
CXml.str_2_file(xml_metadata, metadata_filename)
elif text_metadata is not None:
format_metadata = self.MetaDataFormat_XML
CFile.str_2_file(text_metadata, metadata_filename)
else:
return result
result = CResult.merge_result_info(result, self.Name_FileName,
metadata_filename)
return CResult.merge_result_info(result, self.Name_Format,
format_metadata)
def to_file(cls, result_text, file_name):
return CJson.str_2_file(result_text, file_name)