mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-05 02:43:37 +00:00
218 lines
7.6 KiB
Python
218 lines
7.6 KiB
Python
# oracle/zxjdbc.py
|
|
# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors <see AUTHORS file>
|
|
#
|
|
# This module is part of SQLAlchemy and is released under
|
|
# the MIT License: http://www.opensource.org/licenses/mit-license.php
|
|
|
|
"""
|
|
.. dialect:: oracle+zxjdbc
|
|
:name: zxJDBC for Jython
|
|
:dbapi: zxjdbc
|
|
:connectstring: oracle+zxjdbc://user:pass@host/dbname
|
|
:driverurl: http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/index.html.
|
|
|
|
"""
|
|
import decimal
|
|
import re
|
|
|
|
from sqlalchemy import sql, types as sqltypes, util
|
|
from sqlalchemy.connectors.zxJDBC import ZxJDBCConnector
|
|
from sqlalchemy.dialects.oracle.base import OracleCompiler, OracleDialect, OracleExecutionContext
|
|
from sqlalchemy.engine import result as _result
|
|
from sqlalchemy.sql import expression
|
|
import collections
|
|
|
|
SQLException = zxJDBC = None
|
|
|
|
|
|
class _ZxJDBCDate(sqltypes.Date):
|
|
|
|
def result_processor(self, dialect, coltype):
|
|
def process(value):
|
|
if value is None:
|
|
return None
|
|
else:
|
|
return value.date()
|
|
return process
|
|
|
|
|
|
class _ZxJDBCNumeric(sqltypes.Numeric):
|
|
|
|
def result_processor(self, dialect, coltype):
|
|
#XXX: does the dialect return Decimal or not???
|
|
# if it does (in all cases), we could use a None processor as well as
|
|
# the to_float generic processor
|
|
if self.asdecimal:
|
|
def process(value):
|
|
if isinstance(value, decimal.Decimal):
|
|
return value
|
|
else:
|
|
return decimal.Decimal(str(value))
|
|
else:
|
|
def process(value):
|
|
if isinstance(value, decimal.Decimal):
|
|
return float(value)
|
|
else:
|
|
return value
|
|
return process
|
|
|
|
|
|
class OracleCompiler_zxjdbc(OracleCompiler):
|
|
|
|
def returning_clause(self, stmt, returning_cols):
|
|
self.returning_cols = list(expression._select_iterables(returning_cols))
|
|
|
|
# within_columns_clause=False so that labels (foo AS bar) don't render
|
|
columns = [self.process(c, within_columns_clause=False, result_map=self.result_map)
|
|
for c in self.returning_cols]
|
|
|
|
if not hasattr(self, 'returning_parameters'):
|
|
self.returning_parameters = []
|
|
|
|
binds = []
|
|
for i, col in enumerate(self.returning_cols):
|
|
dbtype = col.type.dialect_impl(self.dialect).get_dbapi_type(self.dialect.dbapi)
|
|
self.returning_parameters.append((i + 1, dbtype))
|
|
|
|
bindparam = sql.bindparam("ret_%d" % i, value=ReturningParam(dbtype))
|
|
self.binds[bindparam.key] = bindparam
|
|
binds.append(self.bindparam_string(self._truncate_bindparam(bindparam)))
|
|
|
|
return 'RETURNING ' + ', '.join(columns) + " INTO " + ", ".join(binds)
|
|
|
|
|
|
class OracleExecutionContext_zxjdbc(OracleExecutionContext):
|
|
|
|
def pre_exec(self):
|
|
if hasattr(self.compiled, 'returning_parameters'):
|
|
# prepare a zxJDBC statement so we can grab its underlying
|
|
# OraclePreparedStatement's getReturnResultSet later
|
|
self.statement = self.cursor.prepare(self.statement)
|
|
|
|
def get_result_proxy(self):
|
|
if hasattr(self.compiled, 'returning_parameters'):
|
|
rrs = None
|
|
try:
|
|
try:
|
|
rrs = self.statement.__statement__.getReturnResultSet()
|
|
next(rrs)
|
|
except SQLException as sqle:
|
|
msg = '%s [SQLCode: %d]' % (sqle.getMessage(), sqle.getErrorCode())
|
|
if sqle.getSQLState() is not None:
|
|
msg += ' [SQLState: %s]' % sqle.getSQLState()
|
|
raise zxJDBC.Error(msg)
|
|
else:
|
|
row = tuple(self.cursor.datahandler.getPyObject(rrs, index, dbtype)
|
|
for index, dbtype in self.compiled.returning_parameters)
|
|
return ReturningResultProxy(self, row)
|
|
finally:
|
|
if rrs is not None:
|
|
try:
|
|
rrs.close()
|
|
except SQLException:
|
|
pass
|
|
self.statement.close()
|
|
|
|
return _result.ResultProxy(self)
|
|
|
|
def create_cursor(self):
|
|
cursor = self._dbapi_connection.cursor()
|
|
cursor.datahandler = self.dialect.DataHandler(cursor.datahandler)
|
|
return cursor
|
|
|
|
|
|
class ReturningResultProxy(_result.FullyBufferedResultProxy):
|
|
|
|
"""ResultProxy backed by the RETURNING ResultSet results."""
|
|
|
|
def __init__(self, context, returning_row):
|
|
self._returning_row = returning_row
|
|
super(ReturningResultProxy, self).__init__(context)
|
|
|
|
def _cursor_description(self):
|
|
ret = []
|
|
for c in self.context.compiled.returning_cols:
|
|
if hasattr(c, 'name'):
|
|
ret.append((c.name, c.type))
|
|
else:
|
|
ret.append((c.anon_label, c.type))
|
|
return ret
|
|
|
|
def _buffer_rows(self):
|
|
return collections.deque([self._returning_row])
|
|
|
|
|
|
class ReturningParam(object):
|
|
|
|
"""A bindparam value representing a RETURNING parameter.
|
|
|
|
Specially handled by OracleReturningDataHandler.
|
|
"""
|
|
|
|
def __init__(self, type):
|
|
self.type = type
|
|
|
|
def __eq__(self, other):
|
|
if isinstance(other, ReturningParam):
|
|
return self.type == other.type
|
|
return NotImplemented
|
|
|
|
def __ne__(self, other):
|
|
if isinstance(other, ReturningParam):
|
|
return self.type != other.type
|
|
return NotImplemented
|
|
|
|
def __repr__(self):
|
|
kls = self.__class__
|
|
return '<%s.%s object at 0x%x type=%s>' % (kls.__module__, kls.__name__, id(self),
|
|
self.type)
|
|
|
|
|
|
class OracleDialect_zxjdbc(ZxJDBCConnector, OracleDialect):
|
|
jdbc_db_name = 'oracle'
|
|
jdbc_driver_name = 'oracle.jdbc.OracleDriver'
|
|
|
|
statement_compiler = OracleCompiler_zxjdbc
|
|
execution_ctx_cls = OracleExecutionContext_zxjdbc
|
|
|
|
colspecs = util.update_copy(
|
|
OracleDialect.colspecs,
|
|
{
|
|
sqltypes.Date: _ZxJDBCDate,
|
|
sqltypes.Numeric: _ZxJDBCNumeric
|
|
}
|
|
)
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
super(OracleDialect_zxjdbc, self).__init__(*args, **kwargs)
|
|
global SQLException, zxJDBC
|
|
from java.sql import SQLException
|
|
from com.ziclix.python.sql import zxJDBC
|
|
from com.ziclix.python.sql.handler import OracleDataHandler
|
|
|
|
class OracleReturningDataHandler(OracleDataHandler):
|
|
"""zxJDBC DataHandler that specially handles ReturningParam."""
|
|
|
|
def setJDBCObject(self, statement, index, object, dbtype=None):
|
|
if type(object) is ReturningParam:
|
|
statement.registerReturnParameter(index, object.type)
|
|
elif dbtype is None:
|
|
OracleDataHandler.setJDBCObject(
|
|
self, statement, index, object)
|
|
else:
|
|
OracleDataHandler.setJDBCObject(
|
|
self, statement, index, object, dbtype)
|
|
self.DataHandler = OracleReturningDataHandler
|
|
|
|
def initialize(self, connection):
|
|
super(OracleDialect_zxjdbc, self).initialize(connection)
|
|
self.implicit_returning = connection.connection.driverversion >= '10.2'
|
|
|
|
def _create_jdbc_url(self, url):
|
|
return 'jdbc:oracle:thin:@%s:%s:%s' % (url.host, url.port or 1521, url.database)
|
|
|
|
def _get_server_version_info(self, connection):
|
|
version = re.search(r'Release ([\d\.]+)', connection.connection.dbversion).group(1)
|
|
return tuple(int(x) for x in version.split('.'))
|
|
|
|
dialect = OracleDialect_zxjdbc
|