U 8T_ @sddlZddlZddlZddlZddlZddlZddlmZddlm Z e dZ GdddZ Gddde Z d d Zd d Zd dZddZdddZddZddZddZdS)N)contextmanager)NotSupportedErrorzdjango.db.backendsc@sxeZdZddZeddddgZddZd d Zd d Zd dZ dddZ dddZ ddZ ddZ ddZddZdS) CursorWrappercCs||_||_dSN)cursordb)selfrrr timesr r r r7hs,   zCursorDebugWrapper.debug_sql)N)NNFF)r1r2r3r%r)rr7 __classcell__r r r9r r5\s r5cCs|rtjtt|dSdS)N-)datetimedatemapintsplit)sr r r typecast_datesrRc Cs`|sdS|d\}}}d|kr0|d\}}nd}tt|t|t|t|dddS)N:.0000000)rPrLr=rO)rQhourminutesseconds microsecondsr r r typecast_timesr\c Cs|sdSd|krt|S|\}}d|kr>|dd\}}nd|krV|dd\}}|d}|d}|d}d|kr|d\}}nd}tt|d t|dt|dt|d t|dt|t|d dd S) N rK+rSrTrUrrVrW)rRrPrLrO)rQdt_datesrIrZr[r r r typecast_timestamps0     recCsFz|d\}}Wntk r0d|}}YnX|d|dfS)z Split an SQL identifier into a two element tuple of (namespace, name). The identifier could be a table, column, or sequence name might be prefixed by a namespace. z"."r;")rP ValueErrorstrip) identifier namespacenamer r r split_identifiers rlcCsVt|\}}|dks t||kr$|St||d}d|r>d|nd|d|||fS)z Shorten an SQL identifier to a repeatable mangled version with the given length. If a quote stripped name contains a namespace, e.g. USERNAME"."TABLE, truncate the table portion only. N)lengthz%s%s%sz%s"."r;)rlrB names_digest)rirnZhash_lenrjrkdigestr r r truncate_names   rqcGs0t}|D]}||q |d|S)zk Generate a 32-bit digest of a set of arguments that can be used to shorten identifying names. N)hashlibmd5updateencode hexdigest)rnargshargr r r rosrocCsl|dkr dSt}|dk r&||_|dk rL|jtd| |d}nd|jtj<| |}d |S)zc Format a number into a string with the requisite number of digits and decimal places. Nr^)r.z{:f}) decimal getcontextcopyprecquantizeDecimalscalebZtrapsRoundedcreate_decimalformat)rZ max_digitsZdecimal_placesr.r r r format_numbers   rcCs(|do|d}|r$|ddS|S)z Strip quotes off of quoted table names to make them safe for use in index names, sequence names, etc. For example '"USER"."TABLE"' (an Oracle naming scheme) becomes 'USER"."TABLE'. rfr^) startswithendswith)Z table_nameZ has_quotesr r r strip_quotessr)Nrm)rLrzr,rrloggingr= contextlibrZ django.dbr getLoggerrErr5rRr\rerlrqrorrr r r r s$   N,