a bug

[tianjiangtao999]

hi,I think this is a bug, like "f isinstance(data, dict):
if 'relname' in data and 'schemaname' in data and re.search(pattern, data['relname']):"

because if the SQL like this:"select (b.script_name),'中' from (select * from temp.halfisolateworkjob20171221) a left join (select * from temp.script2table) b on a.schema_name||'.'||a.table_name=b.table_name where a.create_time <'20171201' and a.owner='app_vgop' and schema_name='SESSION' and process_flag=false and b.script_name is not null order by 1"
the program will not work,you must add “create view....”

def extract_nodes(content, pattern):
    class NS(object):
        pass
    ns = NS()
    ns.views = set()
    ns.dependencies = set()

    def inner(data, depth):
        if isinstance(data, dict):
            if 'relname' in data and 'schemaname' in data and re.search(pattern, data['relname']):
                entity = '.'.join([
                    data['schemaname'],
                    data['relname']
                ])
                if depth == 1:
                    ns.views.add(entity)
                else:
                    ns.dependencies.add(entity)
            else:
                for key, value in data.items():
                    inner(value, depth)
        elif isinstance(data, list) or isinstance(data, tuple):
            for item in data:
                inner(item, depth + 1)

    parsed_content = parse(content)
    inner(parsed_content, 0)
    return {
        'views': ns.views,
        'dependencies': ns.dependencies - ns.views
    }