diff --git a/VERSION b/VERSION index 677fe642..b6c2fb80 100644 --- a/VERSION +++ b/VERSION @@ -1 +1 @@ -Version 2.4.1-alpha.2+timestamp.2013.02.05.08.49.14 +Version 2.4.1-alpha.2+timestamp.2013.02.05.10.43.24 diff --git a/gluon/contrib/pypyodbc.py b/gluon/contrib/pypyodbc.py deleted file mode 100644 index d151ad25..00000000 --- a/gluon/contrib/pypyodbc.py +++ /dev/null @@ -1,2338 +0,0 @@ -# -*- coding: utf-8 -*- - -# PyPyODBC is develped from RealPyODBC 0.1 beta released in 2004 by Michele Petrazzo. Thanks Michele. - -# The MIT License (MIT) -# -# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated -# documentation files (the "Software"), to deal in the Software without restriction, including without limitation -# the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, -# and to permit persons to whom the Software is furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in all copies or substantial portions -# of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO -# THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO #EVENT SHALL THE -# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF -# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER -# DEALINGS IN THE SOFTWARE. - -from __future__ import with_statement - -import sys, os, datetime, ctypes, threading -from decimal import Decimal - -try: - bytearray -except NameError: - # pre version 2.6 python does not have the bytearray type - bytearray = str - -if not hasattr(ctypes, 'c_ssize_t'): - if ctypes.sizeof(ctypes.c_uint) == ctypes.sizeof(ctypes.c_void_p): - ctypes.c_ssize_t = ctypes.c_int - elif ctypes.sizeof(ctypes.c_ulong) == ctypes.sizeof(ctypes.c_void_p): - ctypes.c_ssize_t = ctypes.c_long - elif ctypes.sizeof(ctypes.c_ulonglong) == ctypes.sizeof(ctypes.c_void_p): - ctypes.c_ssize_t = ctypes.c_longlong - -DEBUG = 0 -# Comment out all "if DEBUG:" statements like below for production -if DEBUG: print 'DEBUGGING' - -pooling = True -lock = threading.Lock() -shared_env_h = None -apilevel = '2.0' -paramstyle = 'qmark' -threadsafety = 1 -version = '0.9.1' -lowercase=True -SQLWCHAR_SIZE = ctypes.sizeof(ctypes.c_wchar) - -#determin the size of Py_UNICODE -#sys.maxunicode > 65536 and 'UCS4' or 'UCS2' -UNICODE_SIZE = sys.maxunicode > 65536 and 4 or 2 - - -# Define ODBC constants. They are widly used in ODBC documents and programs -# They are defined in cpp header files: sql.h sqlext.h sqltypes.h sqlucode.h -# and you can get these files from the mingw32-runtime_3.13-1_all.deb package -SQL_ATTR_ODBC_VERSION, SQL_OV_ODBC2, SQL_OV_ODBC3 = 200, 2, 3 -SQL_DRIVER_NOPROMPT = 0 -SQL_ATTR_CONNECTION_POOLING = 201; SQL_CP_ONE_PER_HENV = 2 - -SQL_FETCH_NEXT, SQL_FETCH_FIRST, SQL_FETCH_LAST = 0x01, 0x02, 0x04 -SQL_NULL_HANDLE, SQL_HANDLE_ENV, SQL_HANDLE_DBC, SQL_HANDLE_STMT = 0, 1, 2, 3 -SQL_SUCCESS, SQL_SUCCESS_WITH_INFO = 0, 1 -SQL_NO_DATA = 100; SQL_NO_TOTAL = -4 -SQL_ATTR_ACCESS_MODE = SQL_ACCESS_MODE = 101 -SQL_ATTR_AUTOCOMMIT = SQL_AUTOCOMMIT = 102 - -SQL_MODE_DEFAULT = SQL_MODE_READ_WRITE = 0; SQL_MODE_READ_ONLY = 1 -SQL_AUTOCOMMIT_OFF, SQL_AUTOCOMMIT_ON = 0, 1 -SQL_IS_UINTEGER = -5 -SQL_ATTR_LOGIN_TIMEOUT = 103; SQL_ATTR_CONNECTION_TIMEOUT = 113 -SQL_COMMIT, SQL_ROLLBACK = 0, 1 - -SQL_INDEX_UNIQUE,SQL_INDEX_ALL = 0,1 -SQL_QUICK,SQL_ENSURE = 0,1 -SQL_FETCH_NEXT = 1 -SQL_COLUMN_DISPLAY_SIZE = 6 -SQL_INVALID_HANDLE = -2 -SQL_NO_DATA_FOUND = 100; SQL_NULL_DATA = -1; SQL_NTS = -3 -SQL_HANDLE_DESCR = 4 -SQL_TABLE_NAMES = 3 -SQL_PARAM_INPUT = 1; SQL_PARAM_INPUT_OUTPUT = 2 -SQL_PARAM_TYPE_UNKNOWN = 0 -SQL_RESULT_COL = 3 -SQL_PARAM_OUTPUT = 4 -SQL_RETURN_VALUE = 5 -SQL_PARAM_TYPE_DEFAULT = SQL_PARAM_INPUT_OUTPUT - -SQL_RESET_PARAMS = 3 -SQL_UNBIND = 2 -SQL_CLOSE = 0 - -SQL_TYPE_NULL = 0 -SQL_DECIMAL = 3 -SQL_FLOAT = 6 -SQL_DATE = 9 -SQL_TIME = 10 -SQL_TIMESTAMP = 11 -SQL_VARCHAR = 12 -SQL_LONGVARCHAR = -1 -SQL_VARBINARY = -3 -SQL_LONGVARBINARY = -4 -SQL_BIGINT = -5 -SQL_WVARCHAR = -9 -SQL_WLONGVARCHAR = -10 -SQL_ALL_TYPES = 0 -SQL_SIGNED_OFFSET = -20 - -SQL_C_CHAR = SQL_CHAR = 1 -SQL_C_NUMERIC = SQL_NUMERIC = 2 -SQL_C_LONG = SQL_INTEGER = 4 -SQL_C_SLONG = SQL_C_LONG + SQL_SIGNED_OFFSET -SQL_C_SHORT = SQL_SMALLINT = 5 -SQL_C_FLOAT = SQL_REAL = 7 -SQL_C_DOUBLE = SQL_DOUBLE = 8 -SQL_C_TYPE_DATE = SQL_TYPE_DATE = 91 -SQL_C_TYPE_TIME = SQL_TYPE_TIME = 92 -SQL_C_BINARY = SQL_BINARY = -2 -SQL_C_SBIGINT = SQL_BIGINT + SQL_SIGNED_OFFSET -SQL_C_TINYINT = SQL_TINYINT = -6 -SQL_C_BIT = SQL_BIT = -7 -SQL_C_WCHAR = SQL_WCHAR = -8 -SQL_C_GUID = SQL_GUID = -11 -SQL_C_TYPE_TIMESTAMP = SQL_TYPE_TIMESTAMP = 93 -SQL_C_DEFAULT = 99 - -SQL_SS_TIME2 = -154 - -SQL_DESC_DISPLAY_SIZE = SQL_COLUMN_DISPLAY_SIZE - - -def dttm_cvt(x): - if x == '': return None - else: return datetime.datetime(int(x[0:4]),int(x[5:7]),int(x[8:10]),int(x[10:13]),int(x[14:16]),int(x[17:19]),int(x[20:].ljust(6,'0'))) - -def tm_cvt(x): - if x == '': return None - else: return datetime.time(int(x[0:2]),int(x[3:5]),int(x[6:8]),int(x[9:].ljust(6,'0'))) - -def dt_cvt(x): - if x == '': return None - else: return datetime.date(int(x[0:4]),int(x[5:7]),int(x[8:10])) - - -# Below defines The constants for sqlgetinfo method, and their coresponding return types -SQL_QUALIFIER_LOCATION = 114 -SQL_QUALIFIER_NAME_SEPARATOR = 41 -SQL_QUALIFIER_TERM = 42 -SQL_QUALIFIER_USAGE = 92 -SQL_OWNER_TERM = 39 -SQL_OWNER_USAGE = 91 -SQL_ACCESSIBLE_PROCEDURES = 20 -SQL_ACCESSIBLE_TABLES = 19 -SQL_ACTIVE_ENVIRONMENTS = 116 -SQL_AGGREGATE_FUNCTIONS = 169 -SQL_ALTER_DOMAIN = 117 -SQL_ALTER_TABLE = 86 -SQL_ASYNC_MODE = 10021 -SQL_BATCH_ROW_COUNT = 120 -SQL_BATCH_SUPPORT = 121 -SQL_BOOKMARK_PERSISTENCE = 82 -SQL_CATALOG_LOCATION = SQL_QUALIFIER_LOCATION -SQL_CATALOG_NAME = 10003 -SQL_CATALOG_NAME_SEPARATOR = SQL_QUALIFIER_NAME_SEPARATOR -SQL_CATALOG_TERM = SQL_QUALIFIER_TERM -SQL_CATALOG_USAGE = SQL_QUALIFIER_USAGE -SQL_COLLATION_SEQ = 10004 -SQL_COLUMN_ALIAS = 87 -SQL_CONCAT_NULL_BEHAVIOR = 22 -SQL_CONVERT_FUNCTIONS = 48 -SQL_CONVERT_VARCHAR = 70 -SQL_CORRELATION_NAME = 74 -SQL_CREATE_ASSERTION = 127 -SQL_CREATE_CHARACTER_SET = 128 -SQL_CREATE_COLLATION = 129 -SQL_CREATE_DOMAIN = 130 -SQL_CREATE_SCHEMA = 131 -SQL_CREATE_TABLE = 132 -SQL_CREATE_TRANSLATION = 133 -SQL_CREATE_VIEW = 134 -SQL_CURSOR_COMMIT_BEHAVIOR = 23 -SQL_CURSOR_ROLLBACK_BEHAVIOR = 24 -SQL_DATABASE_NAME = 16 -SQL_DATA_SOURCE_NAME = 2 -SQL_DATA_SOURCE_READ_ONLY = 25 -SQL_DATETIME_LITERALS = 119 -SQL_DBMS_NAME = 17 -SQL_DBMS_VER = 18 -SQL_DDL_INDEX = 170 -SQL_DEFAULT_TXN_ISOLATION = 26 -SQL_DESCRIBE_PARAMETER = 10002 -SQL_DM_VER = 171 -SQL_DRIVER_NAME = 6 -SQL_DRIVER_ODBC_VER = 77 -SQL_DRIVER_VER = 7 -SQL_DROP_ASSERTION = 136 -SQL_DROP_CHARACTER_SET = 137 -SQL_DROP_COLLATION = 138 -SQL_DROP_DOMAIN = 139 -SQL_DROP_SCHEMA = 140 -SQL_DROP_TABLE = 141 -SQL_DROP_TRANSLATION = 142 -SQL_DROP_VIEW = 143 -SQL_DYNAMIC_CURSOR_ATTRIBUTES1 = 144 -SQL_DYNAMIC_CURSOR_ATTRIBUTES2 = 145 -SQL_EXPRESSIONS_IN_ORDERBY = 27 -SQL_FILE_USAGE = 84 -SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES1 = 146 -SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES2 = 147 -SQL_GETDATA_EXTENSIONS = 81 -SQL_GROUP_BY = 88 -SQL_IDENTIFIER_CASE = 28 -SQL_IDENTIFIER_QUOTE_CHAR = 29 -SQL_INDEX_KEYWORDS = 148 -SQL_INFO_SCHEMA_VIEWS = 149 -SQL_INSERT_STATEMENT = 172 -SQL_INTEGRITY = 73 -SQL_KEYSET_CURSOR_ATTRIBUTES1 = 150 -SQL_KEYSET_CURSOR_ATTRIBUTES2 = 151 -SQL_KEYWORDS = 89 -SQL_LIKE_ESCAPE_CLAUSE = 113 -SQL_MAX_ASYNC_CONCURRENT_STATEMENTS = 10022 -SQL_MAX_BINARY_LITERAL_LEN = 112 -SQL_MAX_CATALOG_NAME_LEN = 34 -SQL_MAX_CHAR_LITERAL_LEN = 108 -SQL_MAX_COLUMNS_IN_GROUP_BY = 97 -SQL_MAX_COLUMNS_IN_INDEX = 98 -SQL_MAX_COLUMNS_IN_ORDER_BY = 99 -SQL_MAX_COLUMNS_IN_SELECT = 100 -SQL_MAX_COLUMNS_IN_TABLE = 101 -SQL_MAX_COLUMN_NAME_LEN = 30 -SQL_MAX_CONCURRENT_ACTIVITIES = 1 -SQL_MAX_CURSOR_NAME_LEN = 31 -SQL_MAX_DRIVER_CONNECTIONS = 0 -SQL_MAX_IDENTIFIER_LEN = 10005 -SQL_MAX_INDEX_SIZE = 102 -SQL_MAX_PROCEDURE_NAME_LEN = 33 -SQL_MAX_ROW_SIZE = 104 -SQL_MAX_ROW_SIZE_INCLUDES_LONG = 103 -SQL_MAX_SCHEMA_NAME_LEN = 32 -SQL_MAX_STATEMENT_LEN = 105 -SQL_MAX_TABLES_IN_SELECT = 106 -SQL_MAX_TABLE_NAME_LEN = 35 -SQL_MAX_USER_NAME_LEN = 107 -SQL_MULTIPLE_ACTIVE_TXN = 37 -SQL_MULT_RESULT_SETS = 36 -SQL_NEED_LONG_DATA_LEN = 111 -SQL_NON_NULLABLE_COLUMNS = 75 -SQL_NULL_COLLATION = 85 -SQL_NUMERIC_FUNCTIONS = 49 -SQL_ODBC_INTERFACE_CONFORMANCE = 152 -SQL_ODBC_VER = 10 -SQL_OJ_CAPABILITIES = 65003 -SQL_ORDER_BY_COLUMNS_IN_SELECT = 90 -SQL_PARAM_ARRAY_ROW_COUNTS = 153 -SQL_PARAM_ARRAY_SELECTS = 154 -SQL_PROCEDURES = 21 -SQL_PROCEDURE_TERM = 40 -SQL_QUOTED_IDENTIFIER_CASE = 93 -SQL_ROW_UPDATES = 11 -SQL_SCHEMA_TERM = SQL_OWNER_TERM -SQL_SCHEMA_USAGE = SQL_OWNER_USAGE -SQL_SCROLL_OPTIONS = 44 -SQL_SEARCH_PATTERN_ESCAPE = 14 -SQL_SERVER_NAME = 13 -SQL_SPECIAL_CHARACTERS = 94 -SQL_SQL92_DATETIME_FUNCTIONS = 155 -SQL_SQL92_FOREIGN_KEY_DELETE_RULE = 156 -SQL_SQL92_FOREIGN_KEY_UPDATE_RULE = 157 -SQL_SQL92_GRANT = 158 -SQL_SQL92_NUMERIC_VALUE_FUNCTIONS = 159 -SQL_SQL92_PREDICATES = 160 -SQL_SQL92_RELATIONAL_JOIN_OPERATORS = 161 -SQL_SQL92_REVOKE = 162 -SQL_SQL92_ROW_VALUE_CONSTRUCTOR = 163 -SQL_SQL92_STRING_FUNCTIONS = 164 -SQL_SQL92_VALUE_EXPRESSIONS = 165 -SQL_SQL_CONFORMANCE = 118 -SQL_STANDARD_CLI_CONFORMANCE = 166 -SQL_STATIC_CURSOR_ATTRIBUTES1 = 167 -SQL_STATIC_CURSOR_ATTRIBUTES2 = 168 -SQL_STRING_FUNCTIONS = 50 -SQL_SUBQUERIES = 95 -SQL_SYSTEM_FUNCTIONS = 51 -SQL_TABLE_TERM = 45 -SQL_TIMEDATE_ADD_INTERVALS = 109 -SQL_TIMEDATE_DIFF_INTERVALS = 110 -SQL_TIMEDATE_FUNCTIONS = 52 -SQL_TXN_CAPABLE = 46 -SQL_TXN_ISOLATION_OPTION = 72 -SQL_UNION = 96 -SQL_USER_NAME = 47 -SQL_XOPEN_CLI_YEAR = 10000 - - -aInfoTypes = { -SQL_ACCESSIBLE_PROCEDURES : 'GI_YESNO',SQL_ACCESSIBLE_TABLES : 'GI_YESNO',SQL_ACTIVE_ENVIRONMENTS : 'GI_USMALLINT', -SQL_AGGREGATE_FUNCTIONS : 'GI_UINTEGER',SQL_ALTER_DOMAIN : 'GI_UINTEGER', -SQL_ALTER_TABLE : 'GI_UINTEGER',SQL_ASYNC_MODE : 'GI_UINTEGER',SQL_BATCH_ROW_COUNT : 'GI_UINTEGER', -SQL_BATCH_SUPPORT : 'GI_UINTEGER',SQL_BOOKMARK_PERSISTENCE : 'GI_UINTEGER',SQL_CATALOG_LOCATION : 'GI_USMALLINT', -SQL_CATALOG_NAME : 'GI_YESNO',SQL_CATALOG_NAME_SEPARATOR : 'GI_STRING',SQL_CATALOG_TERM : 'GI_STRING', -SQL_CATALOG_USAGE : 'GI_UINTEGER',SQL_COLLATION_SEQ : 'GI_STRING',SQL_COLUMN_ALIAS : 'GI_YESNO', -SQL_CONCAT_NULL_BEHAVIOR : 'GI_USMALLINT',SQL_CONVERT_FUNCTIONS : 'GI_UINTEGER', -SQL_CONVERT_VARCHAR : 'GI_UINTEGER',SQL_CORRELATION_NAME : 'GI_USMALLINT', -SQL_CREATE_ASSERTION : 'GI_UINTEGER',SQL_CREATE_CHARACTER_SET : 'GI_UINTEGER', -SQL_CREATE_COLLATION : 'GI_UINTEGER',SQL_CREATE_DOMAIN : 'GI_UINTEGER',SQL_CREATE_SCHEMA : 'GI_UINTEGER', -SQL_CREATE_TABLE : 'GI_UINTEGER',SQL_CREATE_TRANSLATION : 'GI_UINTEGER',SQL_CREATE_VIEW : 'GI_UINTEGER', -SQL_CURSOR_COMMIT_BEHAVIOR : 'GI_USMALLINT',SQL_CURSOR_ROLLBACK_BEHAVIOR : 'GI_USMALLINT',SQL_DATABASE_NAME : 'GI_STRING', -SQL_DATA_SOURCE_NAME : 'GI_STRING',SQL_DATA_SOURCE_READ_ONLY : 'GI_YESNO',SQL_DATETIME_LITERALS : 'GI_UINTEGER', -SQL_DBMS_NAME : 'GI_STRING',SQL_DBMS_VER : 'GI_STRING',SQL_DDL_INDEX : 'GI_UINTEGER', -SQL_DEFAULT_TXN_ISOLATION : 'GI_UINTEGER',SQL_DESCRIBE_PARAMETER : 'GI_YESNO',SQL_DM_VER : 'GI_STRING', -SQL_DRIVER_NAME : 'GI_STRING',SQL_DRIVER_ODBC_VER : 'GI_STRING',SQL_DRIVER_VER : 'GI_STRING', -SQL_DROP_ASSERTION : 'GI_UINTEGER',SQL_DROP_CHARACTER_SET : 'GI_UINTEGER', -SQL_DROP_COLLATION : 'GI_UINTEGER',SQL_DROP_DOMAIN : 'GI_UINTEGER', -SQL_DROP_SCHEMA : 'GI_UINTEGER',SQL_DROP_TABLE : 'GI_UINTEGER',SQL_DROP_TRANSLATION : 'GI_UINTEGER', -SQL_DROP_VIEW : 'GI_UINTEGER',SQL_DYNAMIC_CURSOR_ATTRIBUTES1 : 'GI_UINTEGER',SQL_DYNAMIC_CURSOR_ATTRIBUTES2 : 'GI_UINTEGER', -SQL_EXPRESSIONS_IN_ORDERBY : 'GI_YESNO',SQL_FILE_USAGE : 'GI_USMALLINT', -SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES1 : 'GI_UINTEGER',SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES2 : 'GI_UINTEGER', -SQL_GETDATA_EXTENSIONS : 'GI_UINTEGER',SQL_GROUP_BY : 'GI_USMALLINT',SQL_IDENTIFIER_CASE : 'GI_USMALLINT', -SQL_IDENTIFIER_QUOTE_CHAR : 'GI_STRING',SQL_INDEX_KEYWORDS : 'GI_UINTEGER',SQL_INFO_SCHEMA_VIEWS : 'GI_UINTEGER', -SQL_INSERT_STATEMENT : 'GI_UINTEGER',SQL_INTEGRITY : 'GI_YESNO',SQL_KEYSET_CURSOR_ATTRIBUTES1 : 'GI_UINTEGER', -SQL_KEYSET_CURSOR_ATTRIBUTES2 : 'GI_UINTEGER',SQL_KEYWORDS : 'GI_STRING', -SQL_LIKE_ESCAPE_CLAUSE : 'GI_YESNO',SQL_MAX_ASYNC_CONCURRENT_STATEMENTS : 'GI_UINTEGER', -SQL_MAX_BINARY_LITERAL_LEN : 'GI_UINTEGER',SQL_MAX_CATALOG_NAME_LEN : 'GI_USMALLINT', -SQL_MAX_CHAR_LITERAL_LEN : 'GI_UINTEGER',SQL_MAX_COLUMNS_IN_GROUP_BY : 'GI_USMALLINT', -SQL_MAX_COLUMNS_IN_INDEX : 'GI_USMALLINT',SQL_MAX_COLUMNS_IN_ORDER_BY : 'GI_USMALLINT', -SQL_MAX_COLUMNS_IN_SELECT : 'GI_USMALLINT',SQL_MAX_COLUMNS_IN_TABLE : 'GI_USMALLINT', -SQL_MAX_COLUMN_NAME_LEN : 'GI_USMALLINT',SQL_MAX_CONCURRENT_ACTIVITIES : 'GI_USMALLINT', -SQL_MAX_CURSOR_NAME_LEN : 'GI_USMALLINT',SQL_MAX_DRIVER_CONNECTIONS : 'GI_USMALLINT', -SQL_MAX_IDENTIFIER_LEN : 'GI_USMALLINT',SQL_MAX_INDEX_SIZE : 'GI_UINTEGER', -SQL_MAX_PROCEDURE_NAME_LEN : 'GI_USMALLINT',SQL_MAX_ROW_SIZE : 'GI_UINTEGER', -SQL_MAX_ROW_SIZE_INCLUDES_LONG : 'GI_YESNO',SQL_MAX_SCHEMA_NAME_LEN : 'GI_USMALLINT', -SQL_MAX_STATEMENT_LEN : 'GI_UINTEGER',SQL_MAX_TABLES_IN_SELECT : 'GI_USMALLINT', -SQL_MAX_TABLE_NAME_LEN : 'GI_USMALLINT',SQL_MAX_USER_NAME_LEN : 'GI_USMALLINT', -SQL_MULTIPLE_ACTIVE_TXN : 'GI_YESNO',SQL_MULT_RESULT_SETS : 'GI_YESNO', -SQL_NEED_LONG_DATA_LEN : 'GI_YESNO',SQL_NON_NULLABLE_COLUMNS : 'GI_USMALLINT', -SQL_NULL_COLLATION : 'GI_USMALLINT',SQL_NUMERIC_FUNCTIONS : 'GI_UINTEGER', -SQL_ODBC_INTERFACE_CONFORMANCE : 'GI_UINTEGER',SQL_ODBC_VER : 'GI_STRING',SQL_OJ_CAPABILITIES : 'GI_UINTEGER', -SQL_ORDER_BY_COLUMNS_IN_SELECT : 'GI_YESNO',SQL_PARAM_ARRAY_ROW_COUNTS : 'GI_UINTEGER', -SQL_PARAM_ARRAY_SELECTS : 'GI_UINTEGER',SQL_PROCEDURES : 'GI_YESNO',SQL_PROCEDURE_TERM : 'GI_STRING', -SQL_QUOTED_IDENTIFIER_CASE : 'GI_USMALLINT',SQL_ROW_UPDATES : 'GI_YESNO',SQL_SCHEMA_TERM : 'GI_STRING', -SQL_SCHEMA_USAGE : 'GI_UINTEGER',SQL_SCROLL_OPTIONS : 'GI_UINTEGER',SQL_SEARCH_PATTERN_ESCAPE : 'GI_STRING', -SQL_SERVER_NAME : 'GI_STRING',SQL_SPECIAL_CHARACTERS : 'GI_STRING',SQL_SQL92_DATETIME_FUNCTIONS : 'GI_UINTEGER', -SQL_SQL92_FOREIGN_KEY_DELETE_RULE : 'GI_UINTEGER',SQL_SQL92_FOREIGN_KEY_UPDATE_RULE : 'GI_UINTEGER', -SQL_SQL92_GRANT : 'GI_UINTEGER',SQL_SQL92_NUMERIC_VALUE_FUNCTIONS : 'GI_UINTEGER', -SQL_SQL92_PREDICATES : 'GI_UINTEGER',SQL_SQL92_RELATIONAL_JOIN_OPERATORS : 'GI_UINTEGER', -SQL_SQL92_REVOKE : 'GI_UINTEGER',SQL_SQL92_ROW_VALUE_CONSTRUCTOR : 'GI_UINTEGER', -SQL_SQL92_STRING_FUNCTIONS : 'GI_UINTEGER',SQL_SQL92_VALUE_EXPRESSIONS : 'GI_UINTEGER', -SQL_SQL_CONFORMANCE : 'GI_UINTEGER',SQL_STANDARD_CLI_CONFORMANCE : 'GI_UINTEGER', -SQL_STATIC_CURSOR_ATTRIBUTES1 : 'GI_UINTEGER',SQL_STATIC_CURSOR_ATTRIBUTES2 : 'GI_UINTEGER', -SQL_STRING_FUNCTIONS : 'GI_UINTEGER',SQL_SUBQUERIES : 'GI_UINTEGER', -SQL_SYSTEM_FUNCTIONS : 'GI_UINTEGER',SQL_TABLE_TERM : 'GI_STRING',SQL_TIMEDATE_ADD_INTERVALS : 'GI_UINTEGER', -SQL_TIMEDATE_DIFF_INTERVALS : 'GI_UINTEGER',SQL_TIMEDATE_FUNCTIONS : 'GI_UINTEGER', -SQL_TXN_CAPABLE : 'GI_USMALLINT',SQL_TXN_ISOLATION_OPTION : 'GI_UINTEGER', -SQL_UNION : 'GI_UINTEGER',SQL_USER_NAME : 'GI_STRING',SQL_XOPEN_CLI_YEAR : 'GI_STRING', -} - -#Definations for types -BINARY = bytearray -Binary = bytearray -DATETIME = datetime.datetime -Date = datetime.date -Time = datetime.time -Timestamp = datetime.datetime -STRING = str -NUMBER = float -ROWID = int -DateFromTicks = datetime.date.fromtimestamp -TimeFromTicks = lambda x: datetime.datetime.fromtimestamp(x).time() -TimestampFromTicks = datetime.datetime.fromtimestamp - - -#Define exceptions -class OdbcNoLibrary(Exception): - def __init__(self, value): - self.value = value - def __str__(self): - return repr(self.value) -class OdbcLibraryError(Exception): - def __init__(self, value): - self.value = value - def __str__(self): - return repr(self.value) -class OdbcInvalidHandle(Exception): - def __init__(self, value): - self.value = value - def __str__(self): - return repr(self.value) -class OdbcGenericError(Exception): - def __init__(self, value): - self.value = value - def __str__(self): - return repr(self.value) - - -class Warning(StandardError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - - -class Error(StandardError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - -class InterfaceError(Error): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - - -class DatabaseError(Error): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - - -class InternalError(DatabaseError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - - -class ProgrammingError(DatabaseError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - -class DataError(DatabaseError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - -class IntegrityError(DatabaseError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - -class NotSupportedError(Error): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - -class OperationalError(DatabaseError): - def __init__(self, error_code, error_desc): - self.value = (error_code, error_desc) - self.args = (error_code, error_desc) - - - -# Get the References of the platform's ODBC functions via ctypes -if sys.platform in ('win32','cli'): - ODBC_API = ctypes.windll.odbc32 - # On Windows, the size of SQLWCHAR is hardcoded to 2-bytes. - SQLWCHAR_SIZE = ctypes.sizeof(ctypes.c_ushort) -else: - # Set the library location on linux - lib_paths = ("/usr/lib/libodbc.so","/usr/lib/i386-linux-gnu/libodbc.so","/usr/lib/x86_64-linux-gnu/libodbc.so") - lib_paths = [path for path in lib_paths if os.path.exists(path)] - if len(lib_paths) == 0 : - raise OdbcNoLibrary, 'ODBC Library is not found' - library = lib_paths[0] - try: - ODBC_API = ctypes.cdll.LoadLibrary(library) - except: - raise OdbcLibraryError, 'Error while loading %s' % library - - # unixODBC defaults to 2-bytes SQLWCHAR, unless "-DSQL_WCHART_CONVERT" was - # added to CFLAGS, in which case it will be the size of wchar_t. - # Note that using 4-bytes SQLWCHAR will break most ODBC drivers, as driver - # development mostly targets the Windows platform. - import commands - status, output = commands.getstatusoutput('odbc_config --cflags') - if status == 0 and 'SQL_WCHART_CONVERT' in output: - SQLWCHAR_SIZE = ctypes.sizeof(ctypes.c_wchar) - else: - SQLWCHAR_SIZE = ctypes.sizeof(ctypes.c_ushort) - - -create_buffer_u = ctypes.create_unicode_buffer -create_buffer = ctypes.create_string_buffer -wchar_type = ctypes.c_wchar_p -to_unicode = lambda s: s -from_buffer_u = lambda buffer: buffer.value - -# This is the common case on Linux, which uses wide Python build together with -# the default unixODBC without the "-DSQL_WCHART_CONVERT" CFLAGS. -if UNICODE_SIZE > SQLWCHAR_SIZE: - # We can only use unicode buffer if the size of wchar_t (UNICODE_SIZE) is - # the same as the size expected by the driver manager (SQLWCHAR_SIZE). - create_buffer_u = create_buffer - wchar_type = ctypes.c_char_p - - def to_unicode(s): - return s.encode('UTF-16LE') - - def from_buffer_u(buffer): - i = 0 - uchars = [] - while True: - uchar = buffer.raw[i:i + 2].decode('UTF-16') - if uchar == u'\x00': - break - uchars.append(uchar) - i += 2 - return ''.join(uchars) - -# Exoteric case, don't really care. -elif UNICODE_SIZE < SQLWCHAR_SIZE: - raise OdbcLibraryError('Using narrow Python build with ODBC library ' - 'expecting wide unicode is not supported.') - - -# Below Datatype mappings referenced the document at -# http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.help.sdk_12.5.1.aseodbc/html/aseodbc/CACFDIGH.htm - - -SQL_data_type_dict = { \ -#SQL Data TYPE 0.Python Data Type 1.Default Output Converter 2.Buffer Type 3.Buffer Allocator 4.Default Buffer Size -SQL_TYPE_NULL : (None, lambda x: None, SQL_C_CHAR, create_buffer, 2 ), -SQL_CHAR : (str, lambda x: x, SQL_C_CHAR, create_buffer, 2048 ), -SQL_NUMERIC : (Decimal, Decimal, SQL_C_CHAR, create_buffer, 150 ), -SQL_DECIMAL : (Decimal, Decimal, SQL_C_CHAR, create_buffer, 150 ), -SQL_INTEGER : (int, int, SQL_C_CHAR, create_buffer, 150 ), -SQL_SMALLINT : (int, int, SQL_C_CHAR, create_buffer, 150 ), -SQL_FLOAT : (float, float, SQL_C_CHAR, create_buffer, 150 ), -SQL_REAL : (float, float, SQL_C_CHAR, create_buffer, 150 ), -SQL_DOUBLE : (float, float, SQL_C_CHAR, create_buffer, 200 ), -SQL_DATE : (datetime.date, dt_cvt, SQL_C_CHAR , create_buffer, 30 ), -SQL_TIME : (datetime.time, tm_cvt, SQL_C_CHAR, create_buffer, 20 ), -SQL_SS_TIME2 : (datetime.time, tm_cvt, SQL_C_CHAR, create_buffer, 20 ), -SQL_TIMESTAMP : (datetime.datetime, dttm_cvt, SQL_C_CHAR, create_buffer, 30 ), -SQL_VARCHAR : (str, lambda x: x, SQL_C_CHAR, create_buffer, 2048 ), -SQL_LONGVARCHAR : (str, lambda x: x, SQL_C_CHAR, create_buffer, 20500 ), -SQL_BINARY : (bytearray, bytearray, SQL_C_BINARY, create_buffer, 5120 ), -SQL_VARBINARY : (bytearray, bytearray, SQL_C_BINARY, create_buffer, 5120 ), -SQL_LONGVARBINARY : (bytearray, bytearray, SQL_C_BINARY, create_buffer, 20500 ), -SQL_BIGINT : (long, long, SQL_C_CHAR, create_buffer, 150 ), -SQL_TINYINT : (int, int, SQL_C_CHAR, create_buffer, 150 ), -SQL_BIT : (bool, lambda x:x=='1', SQL_C_CHAR, create_buffer, 2 ), -SQL_WCHAR : (unicode, lambda x: x, SQL_C_WCHAR, create_buffer_u, 2048 ), -SQL_WVARCHAR : (unicode, lambda x: x, SQL_C_WCHAR, create_buffer_u, 2048 ), -SQL_GUID : (str, str, SQL_C_CHAR, create_buffer, 50 ), -SQL_WLONGVARCHAR : (unicode, lambda x: x, SQL_C_WCHAR, create_buffer_u, 20500 ), -SQL_TYPE_DATE : (datetime.date, dt_cvt, SQL_C_CHAR, create_buffer, 30 ), -SQL_TYPE_TIME : (datetime.time, tm_cvt, SQL_C_CHAR, create_buffer, 20 ), -SQL_TYPE_TIMESTAMP : (datetime.datetime, dttm_cvt, SQL_C_CHAR, create_buffer, 30 ), -} - - -""" -Types mapping, applicable for 32-bit and 64-bit Linux / Windows / Mac OS X. - -SQLPointer -> ctypes.c_void_p -SQLCHAR * -> ctypes.c_char_p -SQLWCHAR * -> ctypes.c_wchar_p on Windows, ctypes.c_char_p with unixODBC -SQLINT -> ctypes.c_int -SQLSMALLINT -> ctypes.c_short -SQMUSMALLINT -> ctypes.c_ushort -SQLLEN -> ctypes.c_ssize_t -SQLULEN -> ctypes.c_size_t -SQLRETURN -> ctypes.c_short -""" - -# Define the python return type for ODBC functions with ret result. -funcs_with_ret = [ - "SQLAllocHandle", - "SQLBindParameter", - "SQLCloseCursor", - "SQLColAttribute", - "SQLColumns", - "SQLColumnsW", - "SQLConnect", - "SQLConnectW", - "SQLDataSources", - "SQLDataSourcesW", - "SQLDescribeCol", - "SQLDescribeColW", - "SQLDescribeParam", - "SQLDisconnect", - "SQLDriverConnect", - "SQLDriverConnectW", - "SQLEndTran", - "SQLExecDirect", - "SQLExecDirectW", - "SQLExecute", - "SQLFetch", - "SQLFetchScroll", - "SQLForeignKeys", - "SQLForeignKeysW", - "SQLFreeHandle", - "SQLFreeStmt", - "SQLGetData", - "SQLGetDiagRec", - "SQLGetInfo", - "SQLGetTypeInfo", - "SQLMoreResults", - "SQLNumParams", - "SQLNumResultCols", - "SQLPrepare", - "SQLPrepareW", - "SQLPrimaryKeys", - "SQLPrimaryKeysW", - "SQLProcedureColumns", - "SQLProcedureColumnsW", - "SQLProcedures", - "SQLProceduresW", - "SQLRowCount", - "SQLSetConnectAttr", - "SQLSetEnvAttr", - "SQLStatistics", - "SQLStatisticsW", - "SQLTables", - "SQLTablesW", -] - -for func_name in funcs_with_ret: - getattr(ODBC_API, func_name).restype = ctypes.c_short - -if sys.platform not in ('cli'): - #Seems like the IronPython can not declare ctypes.POINTER type arguments - ODBC_API.SQLAllocHandle.argtypes = [ - ctypes.c_short, - ctypes.c_void_p, - ctypes.POINTER(ctypes.c_void_p), - ] - - ODBC_API.SQLBindParameter.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_short, - ctypes.c_short, - ctypes.c_short, - ctypes.c_size_t, - ctypes.c_short, - ctypes.c_void_p, - ctypes.c_ssize_t, - ctypes.POINTER(ctypes.c_ssize_t), - ] - - ODBC_API.SQLColAttribute.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_ushort, - ctypes.c_void_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_ssize_t), - ] - - ODBC_API.SQLDataSources.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_char_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ctypes.c_char_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLDescribeCol.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_char_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_size_t), - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLDescribeParam.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_size_t), - ctypes.POINTER(ctypes.c_short), - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLDriverConnect.argtypes = [ - ctypes.c_void_p, - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ctypes.c_ushort, - ] - - ODBC_API.SQLGetData.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_short, - ctypes.c_void_p, - ctypes.c_ssize_t, - ctypes.POINTER(ctypes.c_ssize_t), - ] - - ODBC_API.SQLGetDiagRec.argtypes = [ - ctypes.c_short, - ctypes.c_void_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.POINTER(ctypes.c_int), - ctypes.c_char_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLGetInfo.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, - ctypes.c_void_p, - ctypes.c_short, - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLRowCount.argtypes = [ - ctypes.c_void_p, - ctypes.POINTER(ctypes.c_ssize_t), - ] - - ODBC_API.SQLNumParams.argtypes = [ - ctypes.c_void_p, - ctypes.POINTER(ctypes.c_short), - ] - - ODBC_API.SQLNumResultCols.argtypes = [ - ctypes.c_void_p, - ctypes.POINTER(ctypes.c_short), - ] - - -ODBC_API.SQLCloseCursor.argtypes = [ctypes.c_void_p] - -ODBC_API.SQLColumns.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - -ODBC_API.SQLConnect.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - - - -ODBC_API.SQLDisconnect.argtypes = [ctypes.c_void_p] - - -ODBC_API.SQLEndTran.argtypes = [ - ctypes.c_short, - ctypes.c_void_p, - ctypes.c_short, -] - -ODBC_API.SQLExecute.argtypes = [ctypes.c_void_p] - -ODBC_API.SQLExecDirect.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_int, -] - -ODBC_API.SQLFetch.argtypes = [ctypes.c_void_p] - -ODBC_API.SQLFetchScroll.argtypes = [ - ctypes.c_void_p, - ctypes.c_short, - ctypes.c_ssize_t, -] - -ODBC_API.SQLForeignKeys.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - -ODBC_API.SQLFreeHandle.argtypes = [ - ctypes.c_short, - ctypes.c_void_p, -] - -ODBC_API.SQLFreeStmt.argtypes = [ - ctypes.c_void_p, - ctypes.c_ushort, -] - - -ODBC_API.SQLGetTypeInfo.argtypes = [ - ctypes.c_void_p, - ctypes.c_short, -] - -ODBC_API.SQLMoreResults.argtypes = [ctypes.c_void_p] - - -ODBC_API.SQLPrepare.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_int, -] - -ODBC_API.SQLPrimaryKeys.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - -ODBC_API.SQLProcedureColumns.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - -ODBC_API.SQLProcedures.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - - -ODBC_API.SQLSetConnectAttr.argtypes = [ - ctypes.c_void_p, - ctypes.c_int, - ctypes.c_void_p, - ctypes.c_int, -] - -ODBC_API.SQLSetEnvAttr.argtypes = [ - ctypes.c_void_p, - ctypes.c_int, - ctypes.c_void_p, - ctypes.c_int, -] - -ODBC_API.SQLStatistics.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_ushort, - ctypes.c_ushort, -] - -ODBC_API.SQLTables.argtypes = [ - ctypes.c_void_p, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, - ctypes.c_char_p, - ctypes.c_short, -] - -def to_wchar(argtypes): - if argtypes: # Under IronPython some argtypes are not declared - result = [] - for x in argtypes: - if x == ctypes.c_char_p: - result.append(wchar_type) - else: - result.append(x) - return result - else: - return argtypes - -ODBC_API.SQLColumnsW.argtypes = to_wchar(ODBC_API.SQLColumns.argtypes) -ODBC_API.SQLConnectW.argtypes = to_wchar(ODBC_API.SQLConnect.argtypes) -ODBC_API.SQLDataSourcesW.argtypes = to_wchar(ODBC_API.SQLDataSources.argtypes) -ODBC_API.SQLDescribeColW.argtypes = to_wchar(ODBC_API.SQLDescribeCol.argtypes) -ODBC_API.SQLDriverConnectW.argtypes = to_wchar(ODBC_API.SQLDriverConnect.argtypes) -ODBC_API.SQLExecDirectW.argtypes = to_wchar(ODBC_API.SQLExecDirect.argtypes) -ODBC_API.SQLForeignKeysW.argtypes = to_wchar(ODBC_API.SQLForeignKeys.argtypes) -ODBC_API.SQLPrepareW.argtypes = to_wchar(ODBC_API.SQLPrepare.argtypes) -ODBC_API.SQLPrimaryKeysW.argtypes = to_wchar(ODBC_API.SQLPrimaryKeys.argtypes) -ODBC_API.SQLProcedureColumnsW.argtypes = to_wchar(ODBC_API.SQLProcedureColumns.argtypes) -ODBC_API.SQLProceduresW.argtypes = to_wchar(ODBC_API.SQLProcedures.argtypes) -ODBC_API.SQLStatisticsW.argtypes = to_wchar(ODBC_API.SQLStatistics.argtypes) -ODBC_API.SQLTablesW.argtypes = to_wchar(ODBC_API.SQLTables.argtypes) - - -# Set the alias for the ctypes functions for beter code readbility or performance. -ADDR = ctypes.byref -SQLFetch = ODBC_API.SQLFetch -SQLExecute = ODBC_API.SQLExecute -SQLBindParameter = ODBC_API.SQLBindParameter - - - - - -def ctrl_err(ht, h, val_ret): - """Classify type of ODBC error from (type of handle, handle, return value) - , and raise with a list""" - state = create_buffer(5) - NativeError = ctypes.c_int() - Message = create_buffer(1024*10) - Buffer_len = ctypes.c_short() - err_list = [] - number_errors = 1 - - while 1: - ret = ODBC_API.SQLGetDiagRec(ht, h, number_errors, state, \ - NativeError, Message, len(Message), ADDR(Buffer_len)) - if ret == SQL_NO_DATA_FOUND: - #No more data, I can raise - if DEBUG: print err_list[0][1] - state = err_list[0][0] - err_text = '['+state+'] '+err_list[0][1] - if state[:2] in ('24','25','42'): - raise ProgrammingError(state,err_text) - elif state[:2] in ('22'): - raise DataError(state,err_text) - elif state[:2] in ('23') or state == '40002': - raise IntegrityError(state,err_text) - elif state == '0A000': - raise NotSupportedError(state,err_text) - elif state in ('HYT00','HYT01'): - raise OperationalError(state,err_text) - elif state[:2] in ('IM','HY'): - raise Error(state,err_text) - else: - raise DatabaseError(state,err_text) - break - elif ret == SQL_INVALID_HANDLE: - #The handle passed is an invalid handle - raise ProgrammingError('', 'SQL_INVALID_HANDLE') - elif ret == SQL_SUCCESS: - err_list.append((state.value, Message.value, NativeError.value)) - number_errors += 1 - - -def validate(ret, handle_type, handle): - """ Validate return value, if not success, raise exceptions based on the handle """ - if ret not in (SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_NO_DATA): - ctrl_err(handle_type, handle, ret) - - -def AllocateEnv(): - if pooling: - ret = ODBC_API.SQLSetEnvAttr(SQL_NULL_HANDLE, SQL_ATTR_CONNECTION_POOLING, SQL_CP_ONE_PER_HENV, SQL_IS_UINTEGER) - validate(ret, SQL_HANDLE_ENV, SQL_NULL_HANDLE) - - ''' - Allocate an ODBC environment by initializing the handle shared_env_h - ODBC enviroment needed to be created, so connections can be created under it - connections pooling can be shared under one environment - ''' - global shared_env_h - shared_env_h = ctypes.c_void_p() - ret = ODBC_API.SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, ADDR(shared_env_h)) - validate(ret, SQL_HANDLE_ENV, shared_env_h) - - # Set the ODBC environment's compatibil leve to ODBC 3.0 - ret = ODBC_API.SQLSetEnvAttr(shared_env_h, SQL_ATTR_ODBC_VERSION, SQL_OV_ODBC3, 0) - validate(ret, SQL_HANDLE_ENV, shared_env_h) - - -""" -Here, we have a few callables that determine how a result row is returned. - -A new one can be added by creating a callable that: -- accepts a cursor as its parameter. -- returns a callable that accepts an iterable containing the row values. -""" - -def TupleRow(cursor): - """Normal tuple with added attribute `cursor_description`, as in pyodbc. - - This is the default. - """ - class Row(tuple): - cursor_description = cursor.description - - return Row - - -def NamedTupleRow(cursor): - """Named tuple to allow attribute lookup by name. - - Requires py2.6 or above. - """ - from collections import namedtuple - - attr_names = [x[0] for x in cursor._ColBufferList] - - class Row(namedtuple('Row', attr_names, rename=True)): - cursor_description = cursor.description - - def __new__(cls, iterable): - return super(Row, cls).__new__(cls, *iterable) - - return Row - - -def MutableNamedTupleRow(cursor): - """Mutable named tuple to allow attribute to be replaced. This should be - compatible with pyodbc's Row type. - - Requires 3rd-party library "recordtype". - """ - from recordtype import recordtype - - attr_names = [x[0] for x in cursor._ColBufferList] - - class Row(recordtype('Row', attr_names, rename=True)): - cursor_description = cursor.description - - def __init__(self, iterable): - super(Row, self).__init__(*iterable) - - def __iter__(self): - for field_name in self.__slots__: - yield getattr(self, field_name) - - def __getitem__(self, index): - if isinstance(index, slice): - return tuple(getattr(self, x) for x in self.__slots__[index]) - return getattr(self, self.__slots__[index]) - - def __setitem__(self, index, value): - setattr(self, self.__slots__[index], value) - - return Row - - -# The get_type function is used to determine if parameters need to be re-binded -# against the changed parameter types -def get_type(v): - t = type(v) - if t == str: - if len(v) >= 255: - t = 's' - if t == unicode: - if len(v) >= 255: - t = 'u' - if t == Decimal: - sv = str(v).replace('-','').strip('0').split('.') - if len(sv)>1: - t = (len(sv[0])+len(sv[1]),len(sv[1])) - else: - t = (len(sv[0]),0) - return t - - - -# The Cursor Class. -class Cursor: - def __init__(self, conx, row_type_callable=None): - """ Initialize self._stmt_h, which is the handle of a statement - A statement is actually the basis of a python"cursor" object - """ - self._stmt_h = ctypes.c_void_p() - self.connection = conx - self.row_type_callable = row_type_callable or TupleRow - self.statement = None - self._last_param_types = None - self._ParamBufferList = [] - self._ColBufferList = [] - self._row_type = None - self._buf_cvt_func = [] - self.rowcount = -1 - self.description = None - self.autocommit = None - self._ColTypeCodeList = [] - self._outputsize = {} - self._inputsizers = [] - self.arraysize = 1 - ret = ODBC_API.SQLAllocHandle(SQL_HANDLE_STMT, self.connection.dbc_h, ADDR(self._stmt_h)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - self.closed = False - - - def execute(self, query_string, params=None, many_mode=False, call_mode=False): - """ Execute the query string, with optional parameters. - If parameters are provided, the query would first be prepared, then executed with parameters; - If parameters are not provided, only th query sting, it would be executed directly - """ - - self._free_results('FREE_STATEMENT') - - if params: - # If parameters exist, first prepare the query then executed with parameters - if not type(params) in (tuple, list, set): - raise TypeError("Params must be in a list, tuple, or set") - - if not many_mode: - if query_string != self.statement: - # if the query is not same as last query, then it is not prepared - self.prepare(query_string) - - - param_types = map(get_type, params) - - if call_mode: - self._BindParams(param_types, self._pram_io_list) - else: - if param_types != self._last_param_types: - self._BindParams(param_types) - - - # With query prepared, now put parameters into buffers - col_num = 0 - for param_buffer, param_buffer_len, sql_type in self._ParamBufferList: - c_char_buf, c_buf_len = '', 0 - param_val = params[col_num] - if param_val is None: - c_buf_len = SQL_NULL_DATA - - elif type(param_val) == datetime.datetime: - max_len = self.connection.type_size_dic[SQL_TYPE_TIMESTAMP][0] - datetime_str = param_val.strftime('%Y-%m-%d %H:%M:%S.%f') - c_char_buf = datetime_str[:max_len] - c_buf_len = len(c_char_buf) - # print c_buf_len, c_char_buf - - elif type(param_val) == datetime.date: - if self.connection.type_size_dic.has_key(SQL_TYPE_DATE): - max_len = self.connection.type_size_dic[SQL_TYPE_DATE][0] - else: - max_len = 10 - c_char_buf = param_val.isoformat()[:max_len] - c_buf_len = len(c_char_buf) - #print c_char_buf - - elif type(param_val) == datetime.time: - if self.connection.type_size_dic.has_key(SQL_TYPE_TIME): - max_len = self.connection.type_size_dic[SQL_TYPE_TIME][0] - c_char_buf = param_val.isoformat()[:max_len] - c_buf_len = len(c_char_buf) - elif self.connection.type_size_dic.has_key(SQL_SS_TIME2): - max_len = self.connection.type_size_dic[SQL_SS_TIME2][0] - c_char_buf = param_val.isoformat()[:max_len] - c_buf_len = len(c_char_buf) - else: - c_buf_len = self.connection.type_size_dic[SQL_TYPE_TIMESTAMP][0] - time_str = param_val.isoformat() - if len(time_str) == 8: - time_str += '.000' - c_char_buf = '1900-01-01 '+time_str[0:c_buf_len - 11] - #print c_buf_len, c_char_buf - - elif type(param_val) == bool: - if param_val == True: - c_char_buf = '1' - else: - c_char_buf = '0' - c_buf_len = 1 - - elif type(param_val) in (int, long, float, Decimal): - c_char_buf = str(param_val) - c_buf_len = len(c_char_buf) - - elif type(param_val) in (str,): - c_char_buf = param_val - c_buf_len = len(c_char_buf) - elif type(param_val) in (unicode,): - c_char_buf = to_unicode(param_val) - c_buf_len = len(c_char_buf) - elif type(param_val) in (bytearray,buffer): - c_char_buf = str(param_val) - c_buf_len = len(c_char_buf) - - else: - c_char_buf = param_val - - - if type(param_val) in (bytearray,buffer): - param_buffer.raw = c_char_buf - - else: - param_buffer.value = c_char_buf - #print param_buffer, param_buffer.value - - if type(param_val) in (unicode,str,'u','s'): - #ODBC driver will find NUL in unicode and string to determine their length - param_buffer_len.value = SQL_NTS - else: - param_buffer_len.value = c_buf_len - - col_num += 1 - ret = SQLExecute(self._stmt_h) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - - if not many_mode: - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - - else: - self.execdirect(query_string) - return (self) - - - def _SQLExecute(self): - ret = SQLExecute(self._stmt_h) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - - - - def prepare(self, query_string): - """prepare a query""" - if type(query_string) == unicode: - c_query_string = wchar_type(to_unicode(query_string)) - ret = ODBC_API.SQLPrepareW(self._stmt_h, c_query_string, len(query_string)) - else: - c_query_string = ctypes.c_char_p(query_string) - ret = ODBC_API.SQLPrepare(self._stmt_h, c_query_string, len(query_string)) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - self.statement = query_string - - - def execdirect(self, query_string): - """Execute a query directly""" - if type(query_string) == unicode: - c_query_string = wchar_type(to_unicode(query_string)) - ret = ODBC_API.SQLExecDirectW(self._stmt_h, c_query_string, len(query_string)) - else: - c_query_string = ctypes.c_char_p(query_string) - ret = ODBC_API.SQLExecDirect(self._stmt_h, c_query_string, len(query_string)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - self.statement = None - return (self) - - - def callproc(self, procname, args): - raise Warning('', 'Still not fully implemented') - self._pram_io_list = [row[4] for row in self.procedurecolumns(procedure = procname).fetchall() if row[4] not in (SQL_RESULT_COL, SQL_RETURN_VALUE)] - - print 'pram_io_list: '+str(self._pram_io_list) - - - - call_escape = '{CALL '+procname - if args: - call_escape += '(' + ','.join(['?' for params in args]) + ')' - call_escape += '}' - - self.execute(call_escape, args, call_mode = True) - - result = [] - - for buf, buf_len, sql_type in self._ParamBufferList: - if buf_len.value == -1: - result.append(None) - else: - result.append(self.connection.output_converter[sql_type](buf.value)) - return (result) - - - - def executemany(self, query_string, params_list = [None]): - self.prepare(query_string) - for params in params_list: - self.execute(query_string, params, many_mode = True) - self._NumOfRows() - self.rowcount = -1 - self._UpdateDesc() - #self._BindCols() - - - def _BindParams(self, param_types, pram_io_list = []): - """Create parameter buffers based on param types, and bind them to the statement""" - # Get the number of query parameters judged by database. - NumParams = ctypes.c_short() - ret = ODBC_API.SQLNumParams(self._stmt_h, ADDR(NumParams)) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - if len(param_types) != NumParams.value: - # In case number of parameters provided do not same as number required - error_desc = "The SQL contains %d parameter markers, but %d parameters were supplied" \ - %(NumParams.value,len(param_types)) - raise ProgrammingError('HY000',error_desc) - - - # Every parameter needs to be binded to a buffer - ParamBufferList = [] - # Temporary holder since we can only call SQLDescribeParam before - # calling SQLBindParam. - temp_holder = [] - for col_num in range(NumParams.value): - col_size = 0 - buf_size = 512 - - if param_types[col_num] == type(None): - ParameterNumber = ctypes.c_ushort(col_num + 1) - DataType = ctypes.c_short() - ParameterSize = ctypes.c_size_t() - DecimalDigits = ctypes.c_short() - Nullable = ctypes.c_short() - ret = ODBC_API.SQLDescribeParam( - self._stmt_h, - ParameterNumber, - ADDR(DataType), - ADDR(ParameterSize), - ADDR(DecimalDigits), - ADDR(Nullable), - ) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - sql_c_type = SQL_C_DEFAULT - sql_type = DataType.value - buf_size = 1 - ParameterBuffer = create_buffer(buf_size) - - elif param_types[col_num] in (int,): - sql_c_type = SQL_C_CHAR - sql_type = SQL_INTEGER - buf_size = SQL_data_type_dict[sql_type][4] - ParameterBuffer = create_buffer(buf_size) - - elif param_types[col_num] in (long,): - sql_c_type = SQL_C_CHAR - sql_type = SQL_BIGINT - buf_size = SQL_data_type_dict[sql_type][4] - ParameterBuffer = create_buffer(buf_size) - - - elif param_types[col_num] == float: - sql_c_type = SQL_C_CHAR - sql_type = SQL_DOUBLE - buf_size = SQL_data_type_dict[sql_type][4] - ParameterBuffer = create_buffer(buf_size) - - elif param_types[col_num] == bool: - sql_c_type = SQL_C_CHAR - sql_type = SQL_BIT - buf_size = SQL_data_type_dict[sql_type][4] - ParameterBuffer = create_buffer(buf_size) - - - elif type(param_types[col_num]) == tuple: #Decimal - sql_c_type = SQL_C_CHAR - sql_type = SQL_NUMERIC - buf_size = param_types[col_num][0] - - ParameterBuffer = create_buffer(buf_size+4) - col_size = param_types[col_num][1] - if DEBUG: print param_types[col_num][0],param_types[col_num][1] - - elif param_types[col_num] == datetime.datetime: - sql_c_type = SQL_C_CHAR - sql_type = SQL_TYPE_TIMESTAMP - buf_size = self.connection.type_size_dic[SQL_TYPE_TIMESTAMP][0] - ParameterBuffer = create_buffer(buf_size) - col_size = self.connection.type_size_dic[SQL_TYPE_TIMESTAMP][1] - - - elif param_types[col_num] == datetime.date: - sql_c_type = SQL_C_CHAR - if self.connection.type_size_dic.has_key(SQL_TYPE_DATE): - if DEBUG: print 'conx.type_size_dic.has_key(SQL_TYPE_DATE)' - sql_type = SQL_TYPE_DATE - buf_size = self.connection.type_size_dic[SQL_TYPE_DATE][0] - - ParameterBuffer = create_buffer(buf_size) - col_size = self.connection.type_size_dic[SQL_TYPE_DATE][1] - - else: - # SQL Sever <2008 doesn't have a DATE type. - sql_type = SQL_TYPE_TIMESTAMP - buf_size = 10 - ParameterBuffer = create_buffer(buf_size) - - - elif param_types[col_num] == datetime.time: - sql_c_type = SQL_C_CHAR - if self.connection.type_size_dic.has_key(SQL_TYPE_TIME): - sql_type = SQL_TYPE_TIME - buf_size = self.connection.type_size_dic[SQL_TYPE_TIME][0] - ParameterBuffer = create_buffer(buf_size) - col_size = self.connection.type_size_dic[SQL_TYPE_TIME][1] - elif self.connection.type_size_dic.has_key(SQL_SS_TIME2): - # TIME type added in SQL Server 2008 - sql_type = SQL_SS_TIME2 - buf_size = self.connection.type_size_dic[SQL_SS_TIME2][0] - ParameterBuffer = create_buffer(buf_size) - col_size = self.connection.type_size_dic[SQL_SS_TIME2][1] - else: - # SQL Sever <2008 doesn't have a TIME type. - sql_type = SQL_TYPE_TIMESTAMP - buf_size = self.connection.type_size_dic[SQL_TYPE_TIMESTAMP][0] - ParameterBuffer = create_buffer(buf_size) - col_size = 3 - - elif param_types[col_num] == unicode: - sql_c_type = SQL_C_WCHAR - sql_type = SQL_WVARCHAR - buf_size = 255 - ParameterBuffer = create_buffer_u(buf_size) - - elif param_types[col_num] == str: - sql_c_type = SQL_C_CHAR - sql_type = SQL_VARCHAR - buf_size = 255 - ParameterBuffer = create_buffer(buf_size) - - elif param_types[col_num] == 'u': - sql_c_type = SQL_C_WCHAR - sql_type = SQL_WLONGVARCHAR - buf_size = len(self._inputsizers)>col_num and self._inputsizers[col_num] or 20500 - ParameterBuffer = create_buffer_u(buf_size) - - elif param_types[col_num] == 's': - sql_c_type = SQL_C_CHAR - sql_type = SQL_LONGVARCHAR - buf_size = len(self._inputsizers)>col_num and self._inputsizers[col_num] or 20500 - ParameterBuffer = create_buffer(buf_size) - - - elif param_types[col_num] in (bytearray, buffer): - sql_c_type = SQL_C_BINARY - sql_type = SQL_LONGVARBINARY - buf_size = len(self._inputsizers)>col_num and self._inputsizers[col_num] or 20500 - ParameterBuffer = create_buffer(buf_size) - - - else: - sql_c_type = SQL_C_CHAR - sql_type = SQL_LONGVARCHAR - buf_size = len(self._inputsizers)>col_num and self._inputsizers[col_num] or 20500 - ParameterBuffer = create_buffer(buf_size) - - temp_holder.append((sql_c_type, sql_type, buf_size, col_size, ParameterBuffer)) - - for col_num, (sql_c_type, sql_type, buf_size, col_size, ParameterBuffer) in enumerate(temp_holder): - BufferLen = ctypes.c_ssize_t(buf_size) - LenOrIndBuf = ctypes.c_ssize_t() - - - InputOutputType = SQL_PARAM_INPUT - if len(pram_io_list) > col_num: - InputOutputType = pram_io_list[col_num] - - ret = SQLBindParameter(self._stmt_h, col_num + 1, InputOutputType, sql_c_type, sql_type, buf_size,\ - col_size, ADDR(ParameterBuffer), BufferLen,ADDR(LenOrIndBuf)) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - # Append the value buffer and the lenth buffer to the array - ParamBufferList.append((ParameterBuffer,LenOrIndBuf,sql_type)) - - self._last_param_types = param_types - self._ParamBufferList = ParamBufferList - - - - def _CreateColBuf(self): - NOC = self._NumOfCols() - self._ColBufferList = [] - self._row_type = None - for col_num in range(NOC): - col_name = self.description[col_num][0] - - col_sql_data_type = self._ColTypeCodeList[col_num] - - # set default size base on the column's sql data type - total_buf_len = SQL_data_type_dict[col_sql_data_type][4] - # over-write if there's preset size value for "large columns" - if total_buf_len >= 20500: - total_buf_len = self._outputsize.get(None,total_buf_len) - # over-write if there's preset size value for the "col_num" column - total_buf_len = self._outputsize.get(col_num, total_buf_len) - - - alloc_buffer = SQL_data_type_dict[col_sql_data_type][3](total_buf_len) - - used_buf_len = ctypes.c_ssize_t() - - target_type = SQL_data_type_dict[col_sql_data_type][2] - force_unicode = self.connection.unicode_results - - if force_unicode and col_sql_data_type in (SQL_CHAR,SQL_VARCHAR,SQL_LONGVARCHAR): - target_type = SQL_C_WCHAR - alloc_buffer = create_buffer_u(total_buf_len) - - buf_cvt_func = self.connection.output_converter[self._ColTypeCodeList[col_num]] - - self._ColBufferList.append([col_name, target_type, used_buf_len, alloc_buffer, total_buf_len, buf_cvt_func]) - - - def _GetData(self): - '''Bind buffers for the record set columns''' - - # Lazily create the row type on first fetch. - if self._row_type is None: - self._row_type = self.row_type_callable(self) - - value_list = [] - col_num = 0 - for col_name, target_type, used_buf_len, alloc_buffer, total_buf_len, buf_cvt_func in self._ColBufferList: - - blocks = [] - while True: - ret = ODBC_API.SQLGetData(self._stmt_h, col_num + 1, target_type, ADDR(alloc_buffer), total_buf_len,\ - ADDR(used_buf_len)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - if ret == SQL_SUCCESS: - if used_buf_len.value == SQL_NULL_DATA: - blocks.append(None) - else: - if target_type == SQL_C_BINARY: - blocks.append(alloc_buffer.raw[:used_buf_len.value]) - elif target_type == SQL_C_WCHAR: - blocks.append(from_buffer_u(alloc_buffer)) - else: - #print col_name, target_type, alloc_buffer.value - blocks.append(alloc_buffer.value) - - break - - if ret == SQL_SUCCESS_WITH_INFO: - if target_type == SQL_C_BINARY: - blocks.append(alloc_buffer.raw) - else: - blocks.append(alloc_buffer.value) - - if ret == SQL_NO_DATA: - break - - - if len(blocks) == 1: - raw_value = blocks[0] - else: - raw_value = ''.join(blocks) - - if raw_value == None: - value_list.append(None) - else: - value_list.append(buf_cvt_func(raw_value)) - col_num += 1 - - return self._row_type(value_list) - - - def _UpdateDesc(self): - "Get the information of (name, type_code, display_size, internal_size, col_precision, scale, null_ok)" - Cname = create_buffer(1024) - Cname_ptr = ctypes.c_short() - Ctype_code = ctypes.c_short() - Csize = ctypes.c_size_t() - Cdisp_size = ctypes.c_ssize_t(0) - CDecimalDigits = ctypes.c_short() - Cnull_ok = ctypes.c_short() - ColDescr = [] - self._ColTypeCodeList = [] - NOC = self._NumOfCols() - for col in range(1, NOC+1): - ret = ODBC_API.SQLColAttribute(self._stmt_h, col, SQL_DESC_DISPLAY_SIZE, ADDR(create_buffer(10)), - 10, ADDR(ctypes.c_short()),ADDR(Cdisp_size)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - ret = ODBC_API.SQLDescribeCol(self._stmt_h, col, Cname, len(Cname), ADDR(Cname_ptr),\ - ADDR(Ctype_code),ADDR(Csize),ADDR(CDecimalDigits), ADDR(Cnull_ok)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - col_name = Cname.value - if lowercase: - col_name = str.lower(col_name) - #(name, type_code, display_size, - # internal_size, col_precision, scale, null_ok) - ColDescr.append((col_name, SQL_data_type_dict.get(Ctype_code.value,(Ctype_code.value))[0],Cdisp_size.value,\ - Csize.value, Csize.value,CDecimalDigits.value,Cnull_ok.value == 1 and True or False)) - self._ColTypeCodeList.append(Ctype_code.value) - - if len(ColDescr) > 0: - self.description = ColDescr - else: - self.description = None - self._CreateColBuf() - - - def _NumOfRows(self): - """Get the number of rows""" - NOR = ctypes.c_ssize_t() - ret = ODBC_API.SQLRowCount(self._stmt_h, ADDR(NOR)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - self.rowcount = NOR.value - return self.rowcount - - - def _NumOfCols(self): - """Get the number of cols""" - NOC = ctypes.c_short() - ret = ODBC_API.SQLNumResultCols(self._stmt_h, ADDR(NOC)) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - return NOC.value - - - def fetchall(self): - rows = [] - while True: - row = self.fetchone() - if row == None: - break - rows.append(row) - return rows - - - def fetchmany(self, num = None): - if num == None: - num = self.arraysize - rows, row_num = [], 0 - - while row_num < num: - row = self.fetchone() - if row == None: - break - rows.append(row) - row_num += 1 - return rows - - - def fetchone(self): - ret = SQLFetch(self._stmt_h) - if ret == SQL_SUCCESS: - return self._GetData() - else: - if ret == SQL_NO_DATA_FOUND: - return None - else: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - def next(self): - row = self.fetchone() - if row == None: - raise(StopIteration) - return row - - def __iter__(self): - return self - - - def skip(self, count = 0): - for i in xrange(count): - ret = ODBC_API.SQLFetchScroll(self._stmt_h, SQL_FETCH_NEXT, 0) - if ret != SQL_SUCCESS: - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - return None - - - - def nextset(self): - ret = ODBC_API.SQLMoreResults(self._stmt_h) - if ret not in (SQL_SUCCESS, SQL_NO_DATA): - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - if ret == SQL_NO_DATA: - self._free_results('FREE_STATEMENT') - return False - else: - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return True - - - def _free_results(self, free_statement): - if not self.connection.connected: - raise ProgrammingError('HY000','Attempt to use a closed connection.') - - self.description = None - if free_statement == 'FREE_STATEMENT': - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_CLOSE) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - else: - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_UNBIND) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_RESET_PARAMS) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self.rowcount = -1 - - - - def getTypeInfo(self, sqlType = None): - if sqlType == None: - type = SQL_ALL_TYPES - else: - type = sqlType - ret = ODBC_API.SQLGetTypeInfo(self._stmt_h, type) - if ret in (SQL_SUCCESS, SQL_SUCCESS_WITH_INFO): - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return self.fetchone() - - - def tables(self, table=None, catalog=None, schema=None, tableType=None): - """Return a list with all tables""" - l_catalog = l_schema = l_table = l_tableType = 0 - - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - - if table != None: - l_table = len(table) - table = ctypes.c_char_p(table) - - if tableType != None: - l_tableType = len(tableType) - tableType = ctypes.c_char_p(tableType) - - self._free_results('FREE_STATEMENT') - self.statement = None - ret = ODBC_API.SQLTables(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - table, l_table, - tableType, l_tableType) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return (self) - - - def columns(self, table=None, catalog=None, schema=None, column=None): - """Return a list with all columns""" - l_catalog = l_schema = l_table = l_column = 0 - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - if table != None: - l_table = len(table) - table = ctypes.c_char_p(table) - if column != None: - l_column = len(column) - column = ctypes.c_char_p(column) - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLColumns(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - table, l_table, - column, l_column) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return (self) - - - def primaryKeys(self, table=None, catalog=None, schema=None): - l_catalog = l_schema = l_table = 0 - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - - if table != None: - l_table = len(table) - table = ctypes.c_char_p(table) - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLPrimaryKeys(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - table, l_table) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return (self) - - - def foreignKeys(self, table=None, catalog=None, schema=None, foreignTable=None, foreignCatalog=None, foreignSchema=None): - l_catalog = l_schema = l_table = l_foreignTable = l_foreignCatalog = l_foreignSchema = 0 - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - if table != None: - l_table = len(table) - table = ctypes.c_char_p(table) - if foreignTable != None: - l_foreignTable = len(foreignTable) - foreignTable = ctypes.c_char_p(foreignTable) - if foreignCatalog != None: - l_foreignCatalog = len(foreignCatalog) - foreignCatalog = ctypes.c_char_p(foreignCatalog) - if foreignSchema != None: - l_foreignSchema = len(foreignSchema) - foreignSchema = ctypes.c_char_p(foreignSchema) - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLForeignKeys(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - table, l_table, - foreignCatalog, l_foreignCatalog, - foreignSchema, l_foreignSchema, - foreignTable, l_foreignTable) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return (self) - - - def procedurecolumns(self, procedure=None, catalog=None, schema=None, column=None): - l_catalog = l_schema = l_procedure = l_column = 0 - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - if procedure != None: - l_procedure = len(procedure) - procedure = ctypes.c_char_p(procedure) - if column != None: - l_column = len(column) - column = ctypes.c_char_p(column) - - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLProcedureColumns(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - procedure, l_procedure, - column, l_column) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - return (self) - - - def procedures(self, procedure=None, catalog=None, schema=None): - l_catalog = l_schema = l_procedure = 0 - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - if procedure != None: - l_procedure = len(procedure) - procedure = ctypes.c_char_p(procedure) - - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLProcedures(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - procedure, l_procedure) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - return (self) - - - def statistics(self, table, catalog=None, schema=None, unique=False, quick=True): - l_table = l_catalog = l_schema = 0 - - if catalog != None: - l_catalog = len(catalog) - catalog = ctypes.c_char_p(catalog) - if schema != None: - l_schema = len(schema) - schema = ctypes.c_char_p(schema) - if table != None: - l_table = len(table) - table = ctypes.c_char_p(table) - - if unique: - Unique = SQL_INDEX_UNIQUE - else: - Unique = SQL_INDEX_ALL - if quick: - Reserved = SQL_QUICK - else: - Reserved = SQL_ENSURE - - self._free_results('FREE_STATEMENT') - self.statement = None - - ret = ODBC_API.SQLStatistics(self._stmt_h, - catalog, l_catalog, - schema, l_schema, - table, l_table, - Unique, Reserved) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self._NumOfRows() - self._UpdateDesc() - #self._BindCols() - return (self) - - - def commit(self): - self.connection.commit() - - def rollback(self): - self.connection.rollback() - - def setoutputsize(self, size, column = None): - self._outputsize[column] = size - - def setinputsizes(self, sizes): - self._inputsizers = [size for size in sizes] - - - def close(self): - """ Call SQLCloseCursor API to free the statement handle""" -# ret = ODBC_API.SQLCloseCursor(self._stmt_h) -# validate(ret, SQL_HANDLE_STMT, self._stmt_h) -# - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_CLOSE) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_UNBIND) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - ret = ODBC_API.SQLFreeStmt(self._stmt_h, SQL_RESET_PARAMS) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - ret = ODBC_API.SQLFreeHandle(SQL_HANDLE_STMT, self._stmt_h) - validate(ret, SQL_HANDLE_STMT, self._stmt_h) - - self.closed = True - - - - def __del__(self): - if not self.closed: - if DEBUG: print 'auto closing cursor: ', - try: - self.close() - except: - if DEBUG: print 'failed' - pass - else: - if DEBUG: print 'succeed' - pass - - def __exit__(self, type, value, traceback): - if value: - self.rollback() - else: - self.commit() - - self.close() - - - def __enter__(self): - return self - - -# This class implement a odbc connection. -# -# - -class Connection: - def __init__(self, connectString = '', autocommit = False, ansi = False, timeout = 0, unicode_results = False, readonly = False, **kargs): - """Init variables and connect to the engine""" - self.connected = 0 - self.type_size_dic = {} - self.unicode_results = False - self.dbc_h = ctypes.c_void_p() - self.autocommit = autocommit - self.readonly = False - self.timeout = 0 - - for key, value in kargs.items(): - connectString = connectString + key + '=' + value + ';' - self.connectString = connectString - - - self.clear_output_converters() - - with lock: - if shared_env_h == None: - #Initialize an enviroment if it is not created. - AllocateEnv() - - # Allocate an DBC handle self.dbc_h under the environment shared_env_h - # This DBC handle is actually the basis of a "connection" - # The handle of self.dbc_h will be used to connect to a certain source - # in the self.connect and self.ConnectByDSN method - - ret = ODBC_API.SQLAllocHandle(SQL_HANDLE_DBC, shared_env_h, ADDR(self.dbc_h)) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - self.connect(connectString, autocommit, ansi, timeout, unicode_results, readonly) - - - - def connect(self, connectString = '', autocommit = False, ansi = False, timeout = 0, unicode_results = False, readonly = False): - """Connect to odbc, using connect strings and set the connection's attributes like autocommit and timeout - by calling SQLSetConnectAttr - """ - - # Before we establish the connection by the connection string - # Set the connection's attribute of "timeout" (Actully LOGIN_TIMEOUT) - if timeout != 0: - ret = ODBC_API.SQLSetConnectAttr(self.dbc_h, SQL_ATTR_LOGIN_TIMEOUT, timeout, SQL_IS_UINTEGER); - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - - # Create one connection with a connect string by calling SQLDriverConnect - # and make self.dbc_h the handle of this connection - - - # Convert the connetsytring to encoded string - # so it can be converted to a ctypes c_char array object - - - - if not ansi: - c_connectString = wchar_type(to_unicode(self.connectString)) - odbc_func = ODBC_API.SQLDriverConnectW - else: - c_connectString = ctypes.c_char_p(self.connectString) - odbc_func = ODBC_API.SQLDriverConnect - - # With unixODBC, SQLDriverConnect will intermittently fail with error: - # [01000] [unixODBC][Driver Manager]Can't open lib '/path/to/so' : file not found" - # or: - # [01000] [unixODBC][Driver Manager]Can't open lib '/path/to/so' : (null)" - # when called concurrently by more than one threads. So, we have to - # use a lock to serialize the calls. By the way, the error is much - # less likely to happen if ODBC Tracing is enabled, likely due to the - # implicit serialization caused by writing to trace file. - if ODBC_API._name != 'odbc32': - with lock: - ret = odbc_func(self.dbc_h, 0, c_connectString, len(self.connectString), None, 0, None, SQL_DRIVER_NOPROMPT) - else: - ret = odbc_func(self.dbc_h, 0, c_connectString, len(self.connectString), None, 0, None, SQL_DRIVER_NOPROMPT) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - - # Set the connection's attribute of "autocommit" - # - self.autocommit = autocommit - - if self.autocommit == True: - ret = ODBC_API.SQLSetConnectAttr(self.dbc_h, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_ON, SQL_IS_UINTEGER) - else: - ret = ODBC_API.SQLSetConnectAttr(self.dbc_h, SQL_ATTR_AUTOCOMMIT, SQL_AUTOCOMMIT_OFF, SQL_IS_UINTEGER) - - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - # Set the connection's attribute of "readonly" - # - self.readonly = readonly - - ret = ODBC_API.SQLSetConnectAttr(self.dbc_h, SQL_ATTR_ACCESS_MODE, self.readonly and SQL_MODE_READ_ONLY or SQL_MODE_READ_WRITE, SQL_IS_UINTEGER) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - self.unicode_results = unicode_results - self.update_type_size_info() - self.connected = 1 - - def clear_output_converters(self): - self.output_converter = {} - for sqltype, profile in SQL_data_type_dict.items(): - self.output_converter[sqltype] = profile[1] - - - def add_output_converter(self, sqltype, func): - self.output_converter[sqltype] = func - - def settimeout(self, timeout): - ret = ODBC_API.SQLSetConnectAttr(self.dbc_h, SQL_ATTR_CONNECTION_TIMEOUT, timeout, SQL_IS_UINTEGER); - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - self.timeout = timeout - - - def ConnectByDSN(self, dsn, user, passwd = ''): - """Connect to odbc, we need dsn, user and optionally password""" - self.dsn = dsn - self.user = user - self.passwd = passwd - - sn = create_buffer(dsn) - un = create_buffer(user) - pw = create_buffer(passwd) - - ret = ODBC_API.SQLConnect(self.dbc_h, sn, len(sn), un, len(un), pw, len(pw)) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - self.update_type_size_info() - self.connected = 1 - - - def cursor(self, row_type_callable=None): - #self.settimeout(self.timeout) - if not self.connected: - raise ProgrammingError('HY000','Attempt to use a closed connection.') - - - return Cursor(self, row_type_callable=row_type_callable) - - def update_type_size_info(self): - for sql_type in ( - SQL_TYPE_TIMESTAMP, - SQL_TYPE_DATE, - SQL_TYPE_TIME, - SQL_SS_TIME2, - ): - cur = Cursor(self) - info_tuple = cur.getTypeInfo(sql_type) - if info_tuple != None: - self.type_size_dic[sql_type] = info_tuple[2], info_tuple[14] - cur.close() - - - def commit(self): - if not self.connected: - raise ProgrammingError('HY000','Attempt to use a closed connection.') - - ret = ODBC_API.SQLEndTran(SQL_HANDLE_DBC, self.dbc_h, SQL_COMMIT); - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - def rollback(self): - if not self.connected: - raise ProgrammingError('HY000','Attempt to use a closed connection.') - - ret = ODBC_API.SQLEndTran(SQL_HANDLE_DBC, self.dbc_h, SQL_ROLLBACK); - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - - - - def getinfo(self,infotype): - if infotype not in aInfoTypes.keys(): - raise ProgrammingError('HY000','Invalid getinfo value: '+str(infotype)) - - - if aInfoTypes[infotype] == 'GI_UINTEGER': - total_buf_len = 1000 - alloc_buffer = ctypes.c_ulong() - used_buf_len = ctypes.c_short() - ret = ODBC_API.SQLGetInfo(self.dbc_h,infotype,ADDR(alloc_buffer), total_buf_len,\ - ADDR(used_buf_len)) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - result = alloc_buffer.value - - elif aInfoTypes[infotype] == 'GI_USMALLINT': - total_buf_len = 1000 - alloc_buffer = ctypes.c_ushort() - used_buf_len = ctypes.c_short() - ret = ODBC_API.SQLGetInfo(self.dbc_h,infotype,ADDR(alloc_buffer), total_buf_len,\ - ADDR(used_buf_len)) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - result = alloc_buffer.value - - else: - total_buf_len = 1000 - alloc_buffer = create_buffer(total_buf_len) - used_buf_len = ctypes.c_short() - ret = ODBC_API.SQLGetInfo(self.dbc_h,infotype,ADDR(alloc_buffer), total_buf_len,\ - ADDR(used_buf_len)) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - result = alloc_buffer.value - if aInfoTypes[infotype] == 'GI_YESNO': - if result[0] == 'Y': - result = True - else: - result = False - - return result - - def __exit__(self, type, value, traceback): - if value: - self.rollback() - else: - self.commit() - - if self.connected: - self.close() - - def __enter__(self): - return self - - def __del__(self): - if self.connected: - self.close() - - def close(self): - if not self.connected: - raise ProgrammingError('HY000','Attempt to close a closed connection.') - - - if self.connected: - if DEBUG: print 'disconnect' - if not self.autocommit: - self.rollback() - ret = ODBC_API.SQLDisconnect(self.dbc_h) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) - if DEBUG: print 'free dbc' - ret = ODBC_API.SQLFreeHandle(SQL_HANDLE_DBC, self.dbc_h) - validate(ret, SQL_HANDLE_DBC, self.dbc_h) -# if shared_env_h.value: -# if DEBUG: print 'env' -# ret = ODBC_API.SQLFreeHandle(SQL_HANDLE_ENV, shared_env_h) -# validate(ret, SQL_HANDLE_ENV, shared_env_h) - self.connected = 0 - -odbc = Connection -connect = odbc -''' -def connect(connectString = '', autocommit = False, ansi = False, timeout = 0, unicode_results = False, readonly = False, **kargs): - return odbc(connectString, autocommit, ansi, timeout, unicode_results, readonly, kargs) -''' - -def win_create_mdb(mdb_path, sort_order = "General\0\0"): - #CREATE_DB= - ctypes.windll.ODBCCP32.SQLConfigDataSource.argtypes = [ctypes.c_void_p,ctypes.c_ushort,ctypes.c_char_p,ctypes.c_char_p] - c_Path = "CREATE_DB=" + mdb_path + " " + sort_order - ODBC_ADD_SYS_DSN = 1 - ret = ctypes.windll.ODBCCP32.SQLConfigDataSource(None,ODBC_ADD_SYS_DSN,"Microsoft Access Driver (*.mdb)", c_Path) - if not ret: - raise Exception('Failed to create Access mdb file. Please check file path, permission and Access driver readiness.') - - -def win_compact_mdb(mdb_path, compacted_mdb_path, sort_order = "General\0\0"): - #COMPACT_DB= - c_Path = "COMPACT_DB=" + mdb_path + " " + compacted_mdb_path + " " + sort_order - ODBC_ADD_SYS_DSN = 1 - ctypes.windll.ODBCCP32.SQLConfigDataSource.argtypes = [ctypes.c_void_p,ctypes.c_ushort,ctypes.c_char_p,ctypes.c_char_p] - ret = ctypes.windll.ODBCCP32.SQLConfigDataSource(None,ODBC_ADD_SYS_DSN,"Microsoft Access Driver (*.mdb)", c_Path) - if not ret: - raise Exception('Failed to compact Access mdb file. Please check file path, permission and Access driver readiness.') - - -def dataSources(): - """Return a list with [name, descrition]""" - dsn = create_buffer(1024) - desc = create_buffer(1024) - dsn_len = ctypes.c_short() - desc_len = ctypes.c_short() - dsn_list = {} - with lock: - if shared_env_h == None: - AllocateEnv() - while 1: - ret = ODBC_API.SQLDataSources(shared_env_h, SQL_FETCH_NEXT, \ - dsn, len(dsn), ADDR(dsn_len), desc, len(desc), ADDR(desc_len)) - if ret == SQL_NO_DATA_FOUND: - break - elif not ret in (SQL_SUCCESS, SQL_SUCCESS_WITH_INFO): - ctrl_err(SQL_HANDLE_ENV, shared_env_h, ret) - else: - dsn_list[dsn.value] = desc.value - return dsn_list