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r@ �tzname� trunc_paramr, r, r- �date_trunc_sqlk s z!DatabaseOperations.date_trunc_sqlz ^[\w/:+-]+$c C s" t |�\}}}|r|� |� �S |S �N)r )r+ rK �sign�offsetr, r, r- �_prepare_tzname_delta s z(DatabaseOperations._prepare_tzname_deltac C sl t jr|s ||fS | j�|�std| ��| jj|kr2| jj}| �|�}d|� d|� d|� d�|fS ||fS )NzInvalid time zone name: %szCAST((FROM_TZ(z, 'z') AT TIME ZONE 'z') AS TIMESTAMP))r �USE_TZ� _tzname_re�matchr= � connection� timezone_namerQ )r+ r? r@ rK �from_timezone_name�to_timezone_namer, r, r- rI � s ��z%DatabaseOperations._convert_sql_to_tzc C s" | � |||�\}}d|� d�|fS )NrG r9 �rI )r+ r? r@ rK r, r, r- �datetime_cast_date_sql� s z)DatabaseOperations.datetime_cast_date_sqlc C s> | � |||�\}}d|� d�}d|� d|� d�g |�|�R fS )Nz+TO_TIMESTAMP(CONCAT('1900-01-01 ', TO_CHAR(z0, 'HH24:MI:SS.FF')), 'YYYY-MM-DD HH24:MI:SS.FF')z CASE WHEN z IS NOT NULL THEN z ELSE NULL ENDrY )r+ r? r@ rK �convert_datetime_sqlr, r, r- �datetime_cast_time_sql� s � �z)DatabaseOperations.datetime_cast_time_sqlc C s | � |||�\}}| �|||�S rN )rI rC )r+ r> r? r@ rK r, r, r- �datetime_extract_sql� s z'DatabaseOperations.datetime_extract_sqlc C s� | � |||�\}}d }|dv r|�� }n0|dkrd}n)|dkr"d}n"|dkr)d}n|dkr0d }n|d kr<d |� d �|fS d |� d�|fS d |� d�g |�|�R fS )NrD r5 r6 r3 r4 �hour�HH24�minute�MI�dayrG r9 �CAST(� AS DATE)r/ rH rJ r, r, r- �datetime_trunc_sql� s z%DatabaseOperations.datetime_trunc_sqlc C sd | � |||�\}}d }|dkrd}n|dkrd}n |dkr%d|� d�|fS d|� d �g |�|�R fS ) Nr^ r_ r` ra �secondrc rd rG r/ rY rJ r, r, r- �time_trunc_sql� s z!DatabaseOperations.time_trunc_sqlc s� t � �|�}|j�� }|dv r|�| j� nD|dkr!|�| j� n9|dkr,|�| j� n.|dkr:tj r9|�| j � n |dkrE|�| j � n|dkrP|�| j � n |dkrZ|�| j � |jjrk|�|dkrg| jn| j� |S )N)� JSONFieldr' � BinaryField� BooleanField� DateTimeField� DateField� TimeField� UUIDField)�super�get_db_converters� output_field�get_internal_type�append�convert_textfield_value�convert_binaryfield_value�convert_booleanfield_valuer rR �convert_datetimefield_value�convert_datefield_value�convert_timefield_value�convert_uuidfield_value�empty_strings_allowed�convert_empty_bytes�convert_empty_string)r+ � expression� converters� internal_type�� __class__r, r- rp � s2 � ��z$DatabaseOperations.get_db_convertersc C � t |tj�r |�� }|S rN )� isinstancer �LOB�read�r+ �valuer~ rU r, r, r- rt � � z*DatabaseOperations.convert_textfield_valuec C s t |tj�r t|�� �}|S rN )r� r r� r r� r� r, r, r- ru � s z,DatabaseOperations.convert_binaryfield_valuec C s |dv rt |�}|S )N)r r )�boolr� r, r, r- rv � s z-DatabaseOperations.convert_booleanfield_valuec C s |d ur t �|| jj �}|S rN )r � make_awarerU r� r, r, r- rw � s z.DatabaseOperations.convert_datetimefield_valuec C r� rN )r� r � Timestamp�dater� r, r, r- rx r� z*DatabaseOperations.convert_datefield_valuec C r� rN )r� r r� �timer� r, r, r- ry r� z*DatabaseOperations.convert_timefield_valuec C s |d ur t �|�}|S rN )�uuid�UUIDr� r, r, r- rz s z*DatabaseOperations.convert_uuidfield_valuec C � | d u rdS | S �N� r, �r� r~ rU r, r, r- r} � z'DatabaseOperations.convert_empty_stringc C r� )N� r, r� r, r, r- r| r� z&DatabaseOperations.convert_empty_bytesc C � dS )Nz DEFERRABLE INITIALLY DEFERREDr, �r+ r, r, r- �deferrable_sql � z!DatabaseOperations.deferrable_sqlc C s< g }|D ]}|� � }|g krtd��|�|d � qt|�S )Nz�The database did not return a new row id. 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r@ r� r� r, r, r- �last_executed_query9 s � �z&DatabaseOperations.last_executed_queryc C s, | � |t|�|�}|�d| � |�� d S )Nz "%s".currvalr )�_get_sequence_namer �execute�fetchone)r+ r� � table_name�pk_name�sq_namer, r, r- �last_insert_idM s z!DatabaseOperations.last_insert_idc C s4 |dv rdS |dkr|dv s|dkr|dkrdS dS ) N)�iexact� icontains� istartswith� iendswithz UPPER(%s)�isnull)ri r' �exactrh zDBMS_LOB.SUBSTR(%s)�%sr, )r+ r> r� r, r, r- � lookup_castR s z DatabaseOperations.lookup_castc C r� )Ni� r, r� r, r, r- �max_in_list_size[ r� z#DatabaseOperations.max_in_list_sizec C r� )N� r, r� r, r, r- �max_name_length^ r� z"DatabaseOperations.max_name_lengthc C r� )N�NULLr, r� r, r, r- �pk_default_valuea r� z#DatabaseOperations.pk_default_valuec C � |S rN r, )r+ �xr, r, r- �prep_for_iexact_queryd r� z(DatabaseOperations.prep_for_iexact_queryc C s |d u rdS |� � S r� )r� �r+ r� r, r, r- � process_clobg s z DatabaseOperations.process_clobc C s: |� d�s|�d�sdt|| �� � }|�dd�}|�� S )N�"z"%s"�%�%%)� startswith�endswithr r� r� r: )r+ �namer, r, r- r* l s z DatabaseOperations.quote_namec C s |dkr d}d| S d}d| S )N�regexz'c'z'i'zREGEXP_LIKE(%%s, %%s, %s)r, )r+ r> � match_optionr, r, r- � regex_lookupy s �z DatabaseOperations.regex_lookupc C sx |sdS g }g }|D ] }|� d| �|jjj�| �|j�f � |� t|�� q dd�|�d�dgt|� �f t |�fS )N)r� r, z%s.%szRETURNING %s INTO %s�, r� ) rs r* �model�_meta�db_table�columnr r� r� r� )r+ �fields� field_namesr@ �fieldr, r, r- �return_insert_columns� s& �����z(DatabaseOperations.return_insert_columnsc C sZ | j �� � }|r|�d||f� n|�d|f� |�� W d � S 1 s&w Y d S )Na� SELECT user_tables.table_name, rcons.constraint_name FROM user_tables JOIN user_constraints cons ON (user_tables.table_name = cons.table_name AND cons.constraint_type = ANY('P', 'U')) LEFT JOIN user_constraints rcons ON (user_tables.table_name = rcons.table_name AND rcons.constraint_type = 'R') START WITH user_tables.table_name = UPPER(%s) CONNECT BY NOCYCLE PRIOR cons.constraint_name = rcons.r_constraint_name GROUP BY user_tables.table_name, rcons.constraint_name HAVING user_tables.table_name != UPPER(%s) ORDER BY MAX(level) DESC a: SELECT cons.table_name, cons.constraint_name FROM user_constraints cons WHERE cons.constraint_type = 'R' AND cons.table_name = UPPER(%s) )rU r� r� �fetchall)r+ r� � recursiver� r, r, r- �__foreign_key_constraints� s � � $�z,DatabaseOperations.__foreign_key_constraintsc C s t dd�| j�S )Ni )�maxsize)r �,_DatabaseOperations__foreign_key_constraintsr� r, r, r- �_foreign_key_constraints� s z+DatabaseOperations._foreign_key_constraintsF)�reset_sequences� allow_cascadec s� |sg S dd� |D ��t � }|D ] }� j||d�D ]\}}|r$��|� |�||f� qq� �fdd�|D �� �fdd��D � � �fdd�|D � } |rc�fdd�� jj�� D �} | �� ��| �� | S ) Nc S s h | ]}|� � �qS r, �r: �r� �tabler, r, r- � <setcomp>� s z/DatabaseOperations.sql_flush.<locals>.<setcomp>)r� c sd g | ].\}}d �� d��� d���� �|���� d��� d���� �|���� d��� d�f �qS )z%s %s %s %s %s %s %s %s;�ALTER�TABLE�DISABLE� CONSTRAINT�KEEP�INDEX�� SQL_KEYWORD� SQL_FIELDr* �r� r� � constraint�r+ �styler, r- � <listcomp>� s ����z0DatabaseOperations.sql_flush.<locals>.<listcomp>c s2 g | ]}d �� d��� d���� �|��f �qS )z %s %s %s;�TRUNCATEr� r� r� r r, r- r � s ����c sT g | ]&\}}d �� d��� d���� �|���� d��� d���� �|��f �qS )z%s %s %s %s %s %s;r� r� �ENABLEr� r� r� r r, r- r � s ����c s g | ] }|d � � � v r|�qS )r� r� )r� �sequence)�truncated_tablesr, r- r � s �)�setr� �addrU � introspection� sequence_list�extend�sequence_reset_by_name_sql) r+ r �tablesr� r� � constraintsr� � foreign_tabler� r? � sequencesr, )r+ r r r- � sql_flush� s< � � � �� ���% �z DatabaseOperations.sql_flushc C sh g }|D ]-}| � |d �}| �|d �}| �|d pd�}| j|||t|�t|�d� }|�|� q|S )Nr� r� �id��no_autofield_sequence_namer� r� r� � column_name)� _get_no_autofield_sequence_namer* �_sequence_reset_sqlr rs ) r+ r r r? � sequence_infor r� r� �queryr, r, r- r s �� z-DatabaseOperations.sequence_reset_by_name_sqlc C s~ g }| j }|D ]5}|jjD ].}t|t�r;| �|jj�}| �|jj�}| �|j�} |� |||| t |�t | �d� � nq q|S )Nr ) r r� � local_fieldsr� r r r� r* r� rs r ) r+ r � model_list�outputr r� �fr r� r� r, r, r- �sequence_reset_sql s0 � ��� ��z%DatabaseOperations.sequence_reset_sqlc C r� r� r, r� r, r, r- �start_transaction_sql0 r� z(DatabaseOperations.start_transaction_sqlc C s |r d| � |� S d| � |� S )NzUSING INDEX TABLESPACE %sz TABLESPACE %sr) )r+ � tablespace�inliner, r, r- �tablespace_sql3 s z!DatabaseOperations.tablespace_sqlc C r� )z� Transform a date value to an object compatible with what is expected by the backend driver for date columns. The default implementation transforms the date to text, but that is not necessary for Oracle. r, r� r, r, r- �adapt_datefield_value9 s z(DatabaseOperations.adapt_datefield_valuec C sN |du rdS t |d�r |S t�|�r"tjr t�|| jj�}ntd��t� |�S )aE Transform a datetime value to an object compatible with what is expected by the backend driver for datetime columns. If naive datetime is passed assumes that is in UTC. Normally Django models.DateTimeField makes sure that if USE_TZ is True passed datetime is timezone aware. N�resolve_expressionzNOracle backend does not support timezone-aware datetimes when USE_TZ is False.) �hasattrr �is_awarer rR � make_naiverU r= r � from_datetimer� r, r, r- �adapt_datetimefield_valueB s � z,DatabaseOperations.adapt_datetimefield_valuec C s` |d u rd S t |d�r |S t|t�rtj�|d�S t�|�r"td��tddd|j |j |j |j �S )Nr$ z%H:%M:%Sz5Oracle backend does not support timezone-aware times.il r ) r% r� �str�datetime�strptimer r& r= r r^ r` rf � microsecondr� r, r, r- �adapt_timefield_value_ s �z(DatabaseOperations.adapt_timefield_valuec C r� rN r, )r+ r� � max_digits�decimal_placesr, r, r- �adapt_decimalfield_valuer r� z+DatabaseOperations.adapt_decimalfield_valuec s� |\}}|dkrdd� |� S |dkrdd� |� S |dkr%d||d� S |d kr0d ||d� S |d kr;d ||d� S |d krFdd� |� S |dkrNtd��t� �||�S )Nr� zMOD(%s)�,�&z BITAND(%s)�|z"BITAND(-%(lhs)s-1,%(rhs)s)+%(lhs)s)�lhs�rhsz<<z (%(lhs)s * POWER(2, %(rhs)s))z>>z"FLOOR(%(lhs)s / POWER(2, %(rhs)s))�^z POWER(%s)�#z'Bitwise XOR is not supported in Oracle.)r� r ro �combine_expression)r+ � connector�sub_expressionsr5 r6 r� r, r- r9 u s z%DatabaseOperations.combine_expressionc C s" | � � d }dtt|�|��� S )z� Manually created sequence name to keep backward compatibility for AutoFields that aren't Oracle identity columns. � z%s_SQ)r� r r r: )r+ r� � name_lengthr, r, r- r � s z2DatabaseOperations._get_no_autofield_sequence_namec C s2 |� d||g� |�� }|d u r| �|�S |d S )Nz� SELECT sequence_name FROM user_tab_identity_cols WHERE table_name = UPPER(%s) AND column_name = UPPER(%s)r )r� r� r )r+ r� r� r� �rowr, r, r- r� � s �z%DatabaseOperations._get_sequence_namec C s� g }|D ]=}g }t |�D ]*\}}|| r)t|| d|| ��� }tj�|d�| }|s1d||f }|�|� q |�dd�|� � qdd�|� S )N� target_fieldr� z %s col_%szSELECT %s FROM DUALr� zSELECT * FROM (%s)z UNION ALL )r� �getattrrr r �types�getrs r� ) r+ r� �placeholder_rowsr r> �selectr� � placeholderr� r, r, r- �bulk_insert_sql� s" ��� z"DatabaseOperations.bulk_insert_sqlc sF |dkr|\}}|\}}g |�|�R }d||f |fS t � �|||�S )Nrl z*NUMTODSINTERVAL(TO_NUMBER(%s - %s), 'DAY'))ro �subtract_temporals) r+ r� r5 r6 �lhs_sql� lhs_params�rhs_sql� rhs_paramsr@ r� r, r- rG � s �z%DatabaseOperations.subtract_temporalsc C s |r | j jjt|� S t|�S )z5Oracle restricts the number of parameters in a query.)rU �features�max_query_paramsr� )r+ r� �objsr, r, r- �bulk_batch_size� s z"DatabaseOperations.bulk_batch_sizec C sH t |tttf�r dS t |t�r|jr| �|j�S t |t�r"|jr"dS dS )z} Oracle supports only EXISTS(...) or filters in the WHERE clause, others must be compared with True. TF) r� r r r r � conditional�0conditional_expression_supported_in_where_clauser~ r )r+ r~ r, r, r- rQ � s �zCDatabaseOperations.conditional_expression_supported_in_where_clauserN )F)NN)D�__name__� __module__� __qualname__�integer_field_rangesr � set_operatorsr �"cast_char_field_without_max_length�cast_data_typesr. r r; rC rM rS rQ rI rZ r\ r] re rg rp rt ru rv rw rx ry rz � staticmethodr} r| r� r� r� r� r� r� r� r� r� r� r� r� r* r� r� r� r r� r r r r r" r# r) r. r1 r9 r r� rF rG rO rQ � __classcell__r, r, r� r- r s� � � * A r )(r+ r� � functoolsr � django.confr � django.dbr r �"django.db.backends.base.operationsr �django.db.backends.utilsr r r �django.db.modelsr r r r � django.db.models.expressionsr �django.db.models.sql.wherer � django.utilsr �django.utils.encodingr r �django.utils.functionalr �django.utils.regex_helperr �baser �utilsr r r r r, r, r, r- �<module> s"
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