def __init__(self, showTables = True, driver="sqlite"):
self.tables = self.views = self.sequences = CaselessDict()
self.tempTables = CaselessDict()
self.version = 0
self.showTables = showTables
self.statements = []
self.driver = driver
if self.driver == "sqlite":
from conary.dbstore import sqlite_drv as drv
elif driver == "postgresql":
from conary.dbstore import postgresql_drv as drv
else:
raise AttributeError("unknown driver", driver)
self.keywords = drv.KeywordDict()
def __init__(self, *args, **kwargs):
CaselessDict.__init__(self, *args)
self.update(kwargs)
if 'config' in self:
self['config'] = self.__class__(self.get('config', {}))
class PrintDatabase(object):
def __init__(self, showTables=True, driver="sqlite"):
self.tables = self.views = self.sequences = CaselessDict()
self.tempTables = CaselessDict()
self.version = 0
self.showTables = showTables
self.statements = []
self.driver = driver
if self.driver == "sqlite":
from conary.dbstore import sqlite_drv as drv
elif driver =="mysql":
from conary.dbstore import mysql_drv as drv
elif driver == "postgresql":
from conary.dbstore import postgresql_drv as drv
else:
raise AttributeError("unknown driver", driver)
self.keywords = drv.KeywordDict()
def connect(self, *args, **kwargs):
pass
def transaction(self):
pass
def commit(self):
pass
def rollback(self):
pass
def cursor(self):
return self
def loadSchema(self):
pass
# simulate non-existent tables for delete statements
@staticmethod
def _skip_delete(sql):
delfrom = re.compile("(?i)DELETE\s+FROM.*")
if delfrom.match(sql):
raise sqlerrors.DatabaseError
return False
# ignore create temporary tables
def _skip_tempTables(self, sql):
tmptbl = re.compile(
"(?i)CREATE\s+TEMPORARY\s+TABLE\s+(?P<table>[^ (]+).*")
match = tmptbl.match(sql)
if match is not None:
groups = match.groupdict()
# remember this temporary table
self.tempTables.setdefault(groups["table"].strip(), [])
return True
return False
# ignore indexes for temporary tables
def _skip_Indexes(self, sql, skipAll=False):
tmpidx = re.compile("(?i)CREATE\s+(UNIQUE\s+)?INDEX\s+\S+\s+"
"ON\s+(?P<table>[^ (]+).*")
match = tmpidx.match(sql)
if match is not None:
groups = match.groupdict()
# remember this temporary table
if skipAll or groups["table"] in self.tempTables:
return True
return False
@staticmethod
def _skip_Triggers(sql, skipAll=False):
tmptrg = re.compile("(?i)CREATE\s+(OR\s+REPLACE\s+)?"
"((DEFINER.*)?TRIGGER|FUNCTION)")
if tmptrg.match(sql):
return skipAll
return False
def _skip_Tables(self, sql, skipAll = False):
tbl = re.compile("^(?i)(CREATE|ALTER)\s+(TABLE\s+(?P<table>[^(]+)"
"|(\s?DEFINER.*)?(\s?SQL SECURITY.*)?VIEW\s+"
"(?P<view>[^( ]+))\s*([(]|ADD|AS).*")
match = tbl.match(sql)
if match is not None:
groups = match.groupdict()
if groups["table"]:
self.tables.setdefault(groups["table"].strip(), [])
if groups["view"]:
self.views.setdefault(groups["view"].strip(), True)
return skipAll
return False
def execute(self, sql, *args, **kwargs):
sql = sql.strip()
# skip the parametrized schema definitions
if (args or kwargs) and "?" in sql:
return
if (self._skip_delete(sql)
or self._skip_tempTables(sql)
or self._skip_Indexes(sql, self.showTables)
or self._skip_Triggers(sql, self.showTables)
or self._skip_Tables(sql, not self.showTables)):
return
into = re.compile("^(?i)(INSERT INTO).*")
# we don't do inserts because they're ot part of te schema definition
if into.match(sql):
return
self.statements.append(sql)
def createTrigger(self, table, column, onAction, pinned=False):
onAction = onAction.lower()
name = "%s_%s" % (table, onAction)
assert(onAction in ["insert", "update"])
create = "CREATE TRIGGER"
if self.driver == "postgresql":
funcName = "%s_func" % name
if pinned:
self.execute("""
CREATE OR REPLACE FUNCTION %s()
RETURNS trigger
AS $$
BEGIN
NEW.%s := OLD.%s ;
RETURN NEW;
END ; $$ LANGUAGE 'plpgsql';
""" % (funcName, column, column))
else:
self.execute("""
CREATE OR REPLACE FUNCTION %s()
RETURNS trigger
AS $$
BEGIN
NEW.%s := TO_NUMBER(TO_CHAR(CURRENT_TIMESTAMP, 'YYYYMMDDHH24MISS'), '99999999999999') ;
RETURN NEW;
END ; $$ LANGUAGE 'plpgsql';
""" % (funcName, column))
# now create the trigger based on the above function
self.execute("""
CREATE TRIGGER %s
BEFORE %s ON %s
FOR EACH ROW
EXECUTE PROCEDURE %s()
""" % (name, onAction, table, funcName))
return
if self.driver == "sqlite":
when = "AFTER"
sql = ("UPDATE %s SET %s = unix_timestamp() "
"WHERE _ROWID_ = NEW._ROWID_ ; " %(table, column))
elif self.driver == "mysql":
when = "BEFORE"
# force the current_timestamp into a numeric context
if pinned:
sql = "SET NEW.%s = OLD.%s ; " % (column, column)
else:
sql = "SET NEW.%s = current_timestamp() + 0 ; " % (column,)
create = "CREATE DEFINER = 'root'@'localhost' TRIGGER"
else:
raise NotImplementedError
sql = """
%s %s %s %s ON %s
FOR EACH ROW BEGIN
%s
END
""" % (create, name, when.upper(), onAction.upper(), table, sql)
self.execute(sql)
return True
def createIndex(self, table, name, columns, unique = False):
if unique:
unique = "UNIQUE"
else:
unique = ""
sql = "CREATE %s INDEX %s on %s (%s)" % (
unique, name, table, columns)
self.execute(sql)
return True
def setVersion(self, version):
self.version = version
def getVersion(self):
return self.version
class PrintDatabase:
def __init__(self, showTables = True, driver="sqlite"):
self.tables = self.views = self.sequences = CaselessDict()
self.tempTables = CaselessDict()
self.version = 0
self.showTables = showTables
self.statements = []
self.driver = driver
if self.driver == "sqlite":
from conary.dbstore import sqlite_drv as drv
elif driver == "postgresql":
from conary.dbstore import postgresql_drv as drv
else:
raise AttributeError("unknown driver", driver)
self.keywords = drv.KeywordDict()
def connect(self, *args, **kwargs):
pass
def transaction(self):
pass
def commit(self):
pass
def rollback(self):
pass
def cursor(self):
return self
def loadSchema(self):
pass
# simulate non-existent tables for delete statements
def __skip_delete(self, sql):
delfrom = re.compile("(?i)DELETE\s+FROM.*")
if delfrom.match(sql):
raise sqlerrors.DatabaseError
return False
# ignore create temporary tables
def __skip_tempTables(self, sql):
tmptbl = re.compile("(?i)CREATE\s+TEMPORARY\s+TABLE\s+(?P<table>[^ (]+).*")
m = tmptbl.match(sql)
if m is not None:
d = m.groupdict()
# remember this temporary table
self.tempTables.setdefault(d["table"].strip(), [])
return True
return False
# ignore indexes for temporary tables
def __skip_Indexes(self, sql, skipAll = False):
tmpidx = re.compile("(?i)CREATE\s+(UNIQUE\s+)?INDEX\s+\S+\s+ON\s+(?P<table>[^ (]+).*")
m = tmpidx.match(sql)
if m is not None:
d = m.groupdict()
# remember this temporary table
if skipAll or d["table"] in self.tempTables:
return True
return False
def __skip_Triggers(self, sql, skipAll = False):
tmptrg = re.compile("(?i)CREATE\s+(OR\s+REPLACE\s+)?((DEFINER.*)?TRIGGER|FUNCTION)")
if tmptrg.match(sql):
return skipAll
return False
def __skip_Tables(self, sql, skipAll = False):
tbl = re.compile(
"^(?i)(CREATE|ALTER)\s+(TABLE\s+(?P<table>[^(]+)|(\s?DEFINER.*)?(\s?SQL SECURITY.*)?VIEW\s+(?P<view>[^( ]+))\s*([(]|ADD|AS).*"
)
m = tbl.match(sql)
if m is not None:
d = m.groupdict()
if d["table"]: self.tables.setdefault(d["table"].strip(), [])
if d["view"]: self.views.setdefault(d["view"].strip(), True)
return skipAll
return False
def execute(self, sql, *args, **kwargs):
sql = sql.strip()
# skip the parametrized schema definitions
if args and "?" in sql:
return
if self.__skip_delete(sql):
return
if self.__skip_tempTables(sql):
return
if self.__skip_Indexes(sql, self.showTables):
return
if self.__skip_Triggers(sql, self.showTables):
return
if self.__skip_Tables(sql, not self.showTables):
return
into = re.compile("^(?i)(INSERT INTO).*")
# we don't do inserts because they're ot part of te schema definition
if into.match(sql):
return
self.statements.append(sql)
def createTrigger(self, table, column, onAction, pinned=False):
onAction = onAction.lower()
name = "%s_%s" % (table, onAction)
assert(onAction in ["insert", "update"])
create = "CREATE TRIGGER"
if self.driver == "postgresql":
funcName = "%s_func" % name
if pinned:
self.execute("""
CREATE OR REPLACE FUNCTION %s()
RETURNS trigger
AS $$
BEGIN
NEW.%s := OLD.%s ;
RETURN NEW;
END ; $$ LANGUAGE 'plpgsql';
""" % (funcName, column, column))
else:
self.execute("""
CREATE OR REPLACE FUNCTION %s()
RETURNS trigger
AS $$
BEGIN
NEW.%s := TO_NUMBER(TO_CHAR(CURRENT_TIMESTAMP, 'YYYYMMDDHH24MISS'), '99999999999999') ;
RETURN NEW;
END ; $$ LANGUAGE 'plpgsql';
""" % (funcName, column))
# now create the trigger based on the above function
self.execute("""
CREATE TRIGGER %s
BEFORE %s ON %s
FOR EACH ROW
EXECUTE PROCEDURE %s()
""" % (name, onAction, table, funcName))
return
if self.driver == "sqlite":
when = "AFTER"
sql = ("UPDATE %s SET %s = unix_timestamp() "
"WHERE _ROWID_ = NEW._ROWID_ ; " %(table, column))
elif self.driver == "mysql":
when = "BEFORE"
# force the current_timestamp into a numeric context
if pinned:
sql = "SET NEW.%s = OLD.%s ; " % (column, column)
else:
sql = "SET NEW.%s = current_timestamp() + 0 ; " % (column,)
create = "CREATE DEFINER = 'root'@'localhost' TRIGGER"
# XXX: FIXME!!! ingres does not support triggers yet
elif self.driver == "ingres":
return
else:
raise NotImplementedError
sql = """
%s %s %s %s ON %s
FOR EACH ROW BEGIN
%s
END
""" % (create, name, when.upper(), onAction.upper(), table, sql)
self.execute(sql)
return True
def createIndex(self, table, name, columns, unique = False):
if unique:
unique = "UNIQUE"
else:
unique = ""
sql = "CREATE %s INDEX %s on %s (%s)" % (
unique, name, table, columns)
self.execute(sql)
return True
def setVersion(self, version):
self.version = version
def getVersion(self):
return self.version
