batchquery.py
changeset 105 10551741f61f
parent 104 d8ff52a0390f
child 106 db4c582a2abd
--- a/batchquery.py	Wed Jul 09 18:03:54 2014 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,69 +0,0 @@
-#!/usr/bin/env python3
-
-from pydbkit import toolbase
-
-
-class BatchQueryTool(toolbase.SimpleTool):
-    def __init__(self):
-        toolbase.SimpleTool.__init__(self, name='batchquery', desc='Run a query using columns from CSV file as arguments.')
-        self.parser.add_argument('--query', dest='query', type=str, help='Query to run. Use %%s for arguments, or %%(name)s for named arguments (see --header).')
-        self.parser.add_argument('--file', dest='file', type=str, help='CSV file with data to use as arguments.')
-        self.parser.add_argument('--init', dest='init', type=str, help='Query which initialize database session (eg. temporary function).')
-        self.parser.add_argument('--output', dest='output', type=str, help='File name for results.')
-        self.parser.add_argument('--outputfunc', dest='outputfunc', type=str, help='Python function which will format results (format_row(args, rows)).')
-        self.parser.add_argument('--header', dest='header', action='store_true', help='First line of CSV is header with names for columns. These name can be used in query.')
-
-    def _split_line(self, line):
-        return [x.strip() for x in line.split(',')]
-
-    def main(self):
-        results = []
-        # load query from file
-        with open(self.args.query, 'r', encoding='utf8') as f:
-            query = f.read()
-        # connect DB
-        with self.pgm.cursor('target') as curs:
-            # run init query
-            if self.args.init:
-                with open(self.args.init, 'r', encoding='utf8') as f:
-                    curs.execute(f.read(), [])
-            # read CSV file
-            with open(self.args.file, 'r', encoding='utf8') as f:
-                # read header
-                names = None
-                if self.args.header:
-                    line = f.readline()
-                    names = self._split_line(line)
-                # read and process lines
-                for line in f:
-                    args = self._split_line(line)
-                    if names:
-                        args = dict(zip(names, args))
-                    curs.execute(query, args)
-                    rows = curs.fetchall()
-                    results.append((args, rows))
-            curs.connection.commit()
-        # write results to output file
-        if self.args.output:
-            format_row = None
-            if self.args.outputfunc:
-                with open(self.args.outputfunc, 'r', encoding='utf8') as f:
-                    d = dict()
-                    exec(f.read(), d)
-                    format_row = d['format_row']
-
-            with open(self.args.output, 'w', encoding='utf8') as f:
-                for args, rows in results:
-                    if format_row:
-                        f.write(format_row(args, rows))
-                    else:
-                        f.write(repr(args))
-                        f.write(' -> ')
-                        f.write(repr(rows))
-                    f.write('\n')
-
-
-tool = BatchQueryTool()
-tool.setup()
-tool.main()
-