93 lines
3.6 KiB
Python
93 lines
3.6 KiB
Python
################################################################################
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# #
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# Folding@Home Client Control (FAHControl) #
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# Copyright (C) 2016-2020 foldingathome.org #
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# Copyright (C) 2010-2016 Stanford University #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <http://www.gnu.org/licenses/>. #
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# #
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################################################################################
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from fah.db import Column
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class Table:
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def __init__(self, name, cols, constraints = ''):
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self.name = name
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self.cols = cols
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self.constraints = constraints
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def where(self, **kwargs):
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if len(kwargs) == 0: return ''
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sql = 'WHERE '
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if len(kwargs) == 1 and 'where' in kwargs:
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sql += kwargs['where']
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else:
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sql +=\
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' AND '.join(map(lambda i: '"%s"=\'%s\'' % i, kwargs.items()))
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return sql
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def create(self, db):
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sql = 'CREATE TABLE IF NOT EXISTS "%s" (%s' % (
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self.name, ','.join(map(Column.get_sql, self.cols)))
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if self.constraints: sql += ',%s' % self.constraints
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sql += ')'
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db.execute(sql).close()
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def insert(self, db, **kwargs):
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cols = filter(lambda col: col.name in kwargs, self.cols)
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# Error checking
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if len(cols) != len(kwargs):
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col_names = set(map(Column.get_name, cols))
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missing = filter(lambda kw: not kw in col_names, kwargs.keys())
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raise Exception('Table %s does not have column(s) %s'
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% (self.name, ', '.join(missing)))
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sql = 'REPLACE INTO "%s" ("%s") VALUES (%s)' % (
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self.name, '","'.join(map(Column.get_name, cols)),
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','.join(map(lambda col: col.get_db_value(kwargs[col.name]), cols)))
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db.execute(sql).close()
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def select(self, db, cols = None, **kwargs):
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if cols is None:
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cols = '"' + '","'.join(map(str, self.cols)) + '"'
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sql = 'SELECT %s FROM %s' % (cols, self.name)
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if 'orderby' in kwargs:
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sql += ' ORDER BY ' + kwargs['orderby']
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del kwargs['orderby']
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sql += ' ' + self.where(**kwargs)
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return db.execute(sql)
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def delete(self, db, **kwargs):
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sql = 'DELETE FROM %s %s' % (self.name, self.where(**kwargs))
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db.execute(sql).close()
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def drop(self, db):
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db.execute('DROP TABLE IF EXISTS ' + self.name).close()
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