a
    ó+caˆ  ã                   @   s*   d dl Z d dlZd dlZG dd„ dƒZdS )é    Nc                   @   s¾   e Zd Zze d¡ZW nH ey^ Z z0ejZe	 
ed e d¡d ¡ƒ¡ W Y dZ[n
dZ[0 0 ddd„Zd	d
„ Zdd„ Zddd„Zd dd„Zdd„ Zd!dd„Zdd„ Zd"dd„Zdd„ ZdS )#Ú	pgwrapperÚpsycopg2zEUnable to load python <{0}> lib (requires lib <{0}> being installed).ú'éþÿÿÿNÚ c                 C   sB   || _ || _|| _|| _|| _|  ¡ | _|  ¡ | _t	 
d¡| _d S )NZmwprecip)ÚdbnameÚhostÚuserÚportÚpasswordÚ
setConnectÚ
connectionÚ	setCursorÚcursorÚloggingZ	getLoggerÚlogger)Úselfr   r   r	   Zpasswdr
   © r   ú\C:/Users/landamar/grass_packager/grass786/addons/wx.mwprecip/etc/g.gui.mwprecip/pgwrapper.pyÚ__init__   s    

zpgwrapper.__init__c                 C   s”   d| j  }| jr|d| j 7 }| jr2|d| j 7 }| jrF|d| j 7 }| jrZ|d| j 7 }z| j |¡}W n$   | j d¡ |  	d¡ Y d S 0 |S )Nzdbname='%s'z
 user='%s'z
 host='%s'z password='%s'z
 port='%s'zCannot connect to database)
r   r	   r   r   r
   r   Zconnectr   ÚerrorÚprint_message)r   Zconn_stringZconnr   r   r   r      s     

zpgwrapper.setConnectc                 C   s4   z| j  ¡ W S    | j d¡ |  d¡ Y n0 d S )NzCannot set cursor)r   r   r   r   r   )r   r   r   r   r   2   s
    zpgwrapper.setCursorú|c              
   C   s€   z | j j|||d | j ¡  W nZ tyz } zB| j ¡  | j d¡ | j |¡ |  d¡ |  |¡ W Y d }~n
d }~0 0 d S )N©Úsepú Catched error (as expected):
)	r   Z	copy_fromr   ÚcommitÚ	ExceptionÚrollbackr   r   r   ©r   ZafileÚtabler   Úerrr   r   r   ÚcopyfromA   s    


zpgwrapper.copyfromc              
   C   s€   z | j j|||d | j ¡  W nZ tyz } zB| j ¡  |  d¡ |  |¡ | j d¡ | j |¡ W Y d }~n
d }~0 0 d S )Nr   r   zCatched error (as expected):
)	r   Zcopy_tor   r   r   r   r   r   r   r   r   r   r   ÚcopytoO   s    


zpgwrapper.copytoc                 C   s4   z| j  ||¡ W n ty.   | j ¡  Y n0 d S ©N)r   Zcopy_expertr   r   r   )r   ÚsqlÚdatar   r   r   Ú
copyexpert\   s
    
zpgwrapper.copyexpertTFc              
   C   sŠ   | j  |¡ z| j |¡ W nH tyd } z0| j ¡  |  |j¡ | j  	|j¡ W Y d }~n
d }~0 0 |rt| j 
¡  |r†| j ¡ }|S d S r$   )r   Údebugr   Úexecuter   r   r   r   Zpgerrorr   r   Úfetchall)r   r%   Zresultsr   Úer   r   r   Ú
executeSqlc   s    
$

zpgwrapper.executeSqlc                 C   s*   d| }| j  |¡ | j  ¡ d d }|S )zX!Count the number of rows.
        @param table         : Name of the table to count rowzSELECT COUNT(*) FROM r   )r   r)   r*   )r   r    Z	sql_countÚnr   r   r   Úcountw   s    zpgwrapper.countc                 C   s–   d}t t|ƒƒD ]8}|d tt |¡| ƒ d tt |¡| ƒ d }q| d¡}|dkrnd| d | }nd| d | d | }| j |¡ dS )	a  !Update the values of columns.
        @param table            : Name of the table to parse.
        @param columns          : Keys values pair of column names and values to update.
        @param where            : Advanced search option for 'where' statement.
        r   ú"z"=ú,zUPDATE "z" SET z WHERE N)	ÚrangeÚlenÚstrÚdictÚkeysÚvaluesÚrstripr   r)   )r   r    ÚcolumnsÚwhereÚparseÚiZsql_update_colr   r   r   Ú	updatecol   s&    ÿþýüûÿ
zpgwrapper.updatecolc                 C   s&   t dƒ t |ƒ t dƒ tj ¡  d S )NzP--------------------------------------------------------------------------------)ÚprintÚsysÚstdoutÚflush)r   Úmsgr   r   r   r   ™   s    zpgwrapper.print_message)r   r   r   r   )r   )r   )TF)r   )Ú__name__Ú
__module__Ú__qualname__Ú	importlibÚimport_moduler   ÚModuleNotFoundErrorr+   rA   ZgsZfatalÚ_ÚformatÚsplitr   r   r   r"   r#   r'   r,   r.   r<   r   r   r   r   r   r   	   s*   ÿÿÿ





r   )r>   rE   r   r   r   r   r   r   Ú<module>   s   