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Revision 2223

Added by Aaron Marcuse-Kubitza about 12 years ago

sql_gen.py: Added col2sql_gen() and use it in value2sql_gen()

View differences:

lib/sql_gen.py
107 107 
    if len(parts) == 1: parts, = parts
108 108 
    return parts
109 109 

  		




  
  110
  
    
def col2sql_gen(col, default_table=None, table_is_esc=False):


  		




  
  111
  
    
    '''Converts old-style (tuple-based) columns to sql_gen-compatible columns.


  		




  
  112
  
    
    @param table_is_esc If False, assumes any table name is not escaped or that


  		




  
  113
  
    
        re-escaping it will produce the same value.


  		




  
  114
  
    
    '''


  		




  
  115
  
    
    if isinstance(col, Col): return col # already in sql_gen form


  		




  
  116
  
    
    


  		




  
  117
  
    
    table = default_table


  		




  
  118
  
    
    if isinstance(col, tuple): table, col = col


  		




  
  119
  
    
    if table_is_esc: table = unescape_table(table)


  		




  
  120
  
    
    return Col(col, as_Table(table))


  		




  
  121
  
    

  		




  110
  122
  
    
def value2sql_gen(value, default_table=None, table_is_esc=False):


  		




  111
  123
  
    
    '''Converts old-style (tuple-based) values to sql_gen-compatible values.


  		




  112
  124
  
    
    @param table_is_esc If False, assumes any table name is not escaped or that


  		




  ......




  114
  126
  
    
    '''


  		




  115
  127
  
    
    if isinstance(value, Code): return value # already in sql_gen form


  		




  116
  128
  
    
    


  		




  117
  
  
    
    if table_is_esc: default_table = unescape_table(default_table)


  		




  118
  
  
    
    is_tuple = isinstance(value, tuple)


  		




  119
  
  
    
    if is_tuple and len(value) == 1: return Literal(value[0]) # value is literal


  		




  120
  
  
    
    elif is_tuple and len(value) == 2: # value is col with table


  		




  121
  
  
    
        table, col = value


  		




  122
  
  
    
        if table_is_esc: table = unescape_table(table)


  		




  123
  
  
    
        return Col(col, as_Table(table))


  		




  124
  
  
    
    else: return Col(value, as_Table(default_table)) # value is col name


  		




  
  129
  
    
    if isinstance(value, tuple) and len(value) == 1: return Literal(value[0])


  		




  
  130
  
    
    else: return col2sql_gen(value, default_table, table_is_esc)


  		












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