U x^@sddZddlmZddlmZddlmZddZddZd d Zd d Z d dZ ddZ ddZ dS)zgprivate module containing functions used for copying data between instances based on join conditions. ) attributes)exc)utilc Cs|j}|j}|D]\} } z(|j| } |j| jj||tj} Wn&tj k rft d|| || YnXz(|j| } |j| jj ||| dWn&tj k rt d|| || YnX|r| j r| j r| | rd|jd|| f<qdS)NFTZ pk_cascaded)dict_columntopropertymanagerkeyimplgetr PASSIVE_OFFrUnmappedColumnError_raise_col_to_propset primary_keyZ references) source source_mapperdest dest_mappersynchronize_pairs uowcommitZflag_cascaded_pks source_dictZ dest_dictlrpropvaluer;/tmp/pip-install-dq5v43_d/SQLAlchemy/sqlalchemy/orm/sync.pypopulates4    rc Cs|D]\}}z|j|}||j}Wn&tjk rJtd||||YnXz|j|}|||j<Wqtjk rtd||||YqXqdS)NFT)rrrr r )rrrrrrrrrrbulk_populate_inherit_keys=s   rc Cs|D]x\}}|jr>|||j|tjkr>td|t|fz|||j|dWqtj k rzt dd|||YqXqdS)NzKDependency rule tried to blank-out primary key column '%s' on instance '%s'T) r_get_state_attr_by_columnrorm_utilZ _none_setAssertionErrorZ state_strZ_set_state_attr_by_columnrr r )rrrrrrrrclearMs   r"c Cs||D]r\}}z*|||}|j||j|tjd}Wn&tjk r\td||d|YnX|||j <||||j <qdSN)ZpassiveF) Z_get_committed_attr_by_columnobjrrrr rr r r) rrrZ old_prefixrrrZoldvaluerrrrupdate_s    r%c Cs^|D]T\}}z|j||j|tjd}Wn&tjk rLtd||d|YnX|||j<qdSr#)rrrr rr r r)rrZdict_rrrrrrr populate_dictns  r&c Csj|D]`\}}z|j|}Wn&tjk r@td||d|YnX|||jtj}t|j rdSqdS)zpreturn true if the source object has changes from an old to a new value on the given synchronize pairs FNT) rrr r Zget_attribute_historyrrZPASSIVE_NO_INITIALIZEboolZdeleted)rrrrrrrhistoryrrrsource_modifiedzs  r)cCs0|rtd||fntd|||fdS)NzCan't execute sync rule for destination column '%s'; mapper '%s' does not map this column. Try using an explicit `foreign_keys` collection which does not include this column (or use a viewonly=True relation).zCan't execute sync rule for source column '%s'; mapper '%s' does not map this column. Try using an explicit `foreign_keys` collection which does not include destination column '%s' (or use a viewonly=True relation).)rr )ZisdestrZ source_columnrZ dest_columnrrrr sr N) __doc__rrrr rrr"r%r&r)r rrrrs   +