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-rw-r--r--django/db/backends/ado_mssql/base.py22
-rw-r--r--django/db/backends/dummy/base.py1
-rw-r--r--django/db/backends/mysql/base.py23
-rw-r--r--django/db/backends/mysql_old/base.py23
-rw-r--r--django/db/backends/oracle/base.py448
-rw-r--r--django/db/backends/oracle/client.py11
-rw-r--r--django/db/backends/oracle/creation.py324
-rw-r--r--django/db/backends/oracle/introspection.py82
-rw-r--r--django/db/backends/postgresql/base.py31
-rw-r--r--django/db/backends/postgresql_psycopg2/base.py25
-rw-r--r--django/db/backends/sqlite3/base.py23
-rw-r--r--django/db/backends/util.py11
-rw-r--r--django/db/models/base.py19
-rw-r--r--django/db/models/fields/__init__.py32
-rw-r--r--django/db/models/fields/related.py12
-rw-r--r--django/db/models/options.py11
-rw-r--r--django/db/models/query.py89
17 files changed, 1043 insertions, 144 deletions
diff --git a/django/db/backends/ado_mssql/base.py b/django/db/backends/ado_mssql/base.py
index 52363ed705..0deb6aae64 100644
--- a/django/db/backends/ado_mssql/base.py
+++ b/django/db/backends/ado_mssql/base.py
@@ -89,7 +89,14 @@ class DatabaseWrapper(local):
self.connection.close()
self.connection = None
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = True
+needs_datetime_string_cast = True
+needs_upper_for_iops = False
supports_constraints = True
+supports_tablespaces = True
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith('[') and name.endswith(']'):
@@ -117,6 +124,9 @@ def get_date_trunc_sql(lookup_type, field_name):
if lookup_type=='day':
return "Convert(datetime, Convert(varchar(12), %s))" % field_name
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
# TODO: This is a guess. Make sure this is correct.
sql = "LIMIT %s" % limit
@@ -139,6 +149,18 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return None
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_tablespace_sql(tablespace, inline=False):
+ return "ON %s" % quote_name(tablespace)
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
diff --git a/django/db/backends/dummy/base.py b/django/db/backends/dummy/base.py
index d0ec897407..6a190cf59c 100644
--- a/django/db/backends/dummy/base.py
+++ b/django/db/backends/dummy/base.py
@@ -33,6 +33,7 @@ class DatabaseWrapper:
pass # close()
supports_constraints = False
+supports_tablespaces = False
quote_name = complain
dictfetchone = complain
dictfetchmany = complain
diff --git a/django/db/backends/mysql/base.py b/django/db/backends/mysql/base.py
index d4cb1fa964..b0ca7994b7 100644
--- a/django/db/backends/mysql/base.py
+++ b/django/db/backends/mysql/base.py
@@ -134,7 +134,14 @@ class DatabaseWrapper(local):
self.server_version = tuple([int(x) for x in m.groups()])
return self.server_version
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = False
+needs_datetime_string_cast = True # MySQLdb requires a typecast for dates
+needs_upper_for_iops = False
supports_constraints = True
+supports_tablespaces = False
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith("`") and name.endswith("`"):
@@ -167,6 +174,9 @@ def get_date_trunc_sql(lookup_type, field_name):
sql = "CAST(DATE_FORMAT(%s, '%s') AS DATETIME)" % (field_name, format_str)
return sql
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
sql = "LIMIT "
if offset and offset != 0:
@@ -188,11 +198,20 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return None;
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
themselves) and put the database in an empty 'initial' state
-
+
"""
# NB: The generated SQL below is specific to MySQL
# 'TRUNCATE x;', 'TRUNCATE y;', 'TRUNCATE z;'... style SQL statements
@@ -204,7 +223,7 @@ def get_sql_flush(style, tables, sequences):
style.SQL_FIELD(quote_name(table))
) for table in tables] + \
['SET FOREIGN_KEY_CHECKS = 1;']
-
+
# 'ALTER TABLE table AUTO_INCREMENT = 1;'... style SQL statements
# to reset sequence indices
sql.extend(["%s %s %s %s %s;" % \
diff --git a/django/db/backends/mysql_old/base.py b/django/db/backends/mysql_old/base.py
index ac3b75efde..33960827ee 100644
--- a/django/db/backends/mysql_old/base.py
+++ b/django/db/backends/mysql_old/base.py
@@ -135,7 +135,14 @@ class DatabaseWrapper(local):
self.server_version = tuple([int(x) for x in m.groups()])
return self.server_version
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = False
+needs_datetime_string_cast = True # MySQLdb requires a typecast for dates
+needs_upper_for_iops = False
supports_constraints = True
+supports_tablespaces = False
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith("`") and name.endswith("`"):
@@ -168,6 +175,9 @@ def get_date_trunc_sql(lookup_type, field_name):
sql = "CAST(DATE_FORMAT(%s, '%s') AS DATETIME)" % (field_name, format_str)
return sql
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
sql = "LIMIT "
if offset and offset != 0:
@@ -189,11 +199,20 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return None;
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
themselves) and put the database in an empty 'initial' state
-
+
"""
# NB: The generated SQL below is specific to MySQL
# 'TRUNCATE x;', 'TRUNCATE y;', 'TRUNCATE z;'... style SQL statements
@@ -205,7 +224,7 @@ def get_sql_flush(style, tables, sequences):
style.SQL_FIELD(quote_name(table))
) for table in tables] + \
['SET FOREIGN_KEY_CHECKS = 1;']
-
+
# 'ALTER TABLE table AUTO_INCREMENT = 1;'... style SQL statements
# to reset sequence indices
sql.extend(["%s %s %s %s %s;" % \
diff --git a/django/db/backends/oracle/base.py b/django/db/backends/oracle/base.py
index 2bc88bb7b9..48b3c27355 100644
--- a/django/db/backends/oracle/base.py
+++ b/django/db/backends/oracle/base.py
@@ -4,12 +4,16 @@ Oracle database backend for Django.
Requires cx_Oracle: http://www.python.net/crew/atuining/cx_Oracle/
"""
+from django.conf import settings
from django.db.backends import util
try:
import cx_Oracle as Database
except ImportError, e:
from django.core.exceptions import ImproperlyConfigured
raise ImproperlyConfigured, "Error loading cx_Oracle module: %s" % e
+import datetime
+from django.utils.datastructures import SortedDict
+
DatabaseError = Database.Error
IntegrityError = Database.IntegrityError
@@ -31,7 +35,6 @@ class DatabaseWrapper(local):
return self.connection is not None
def cursor(self):
- from django.conf import settings
if not self._valid_connection():
if len(settings.DATABASE_HOST.strip()) == 0:
settings.DATABASE_HOST = 'localhost'
@@ -41,25 +44,37 @@ class DatabaseWrapper(local):
else:
conn_string = "%s/%s@%s" % (settings.DATABASE_USER, settings.DATABASE_PASSWORD, settings.DATABASE_NAME)
self.connection = Database.connect(conn_string, **self.options)
- return FormatStylePlaceholderCursor(self.connection)
+ cursor = FormatStylePlaceholderCursor(self.connection)
+ # default arraysize of 1 is highly sub-optimal
+ cursor.arraysize = 100
+ # set oracle date to ansi date format
+ cursor.execute("ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD'")
+ cursor.execute("ALTER SESSION SET NLS_TIMESTAMP_FORMAT = 'YYYY-MM-DD HH24:MI:SS.FF'")
+ if settings.DEBUG:
+ return util.CursorDebugWrapper(cursor, self)
+ return cursor
def _commit(self):
if self.connection is not None:
- self.connection.commit()
+ return self.connection.commit()
def _rollback(self):
if self.connection is not None:
- try:
- self.connection.rollback()
- except Database.NotSupportedError:
- pass
+ return self.connection.rollback()
def close(self):
if self.connection is not None:
self.connection.close()
self.connection = None
+allows_group_by_ordinal = False
+allows_unique_and_pk = False # Suppress UNIQUE/PK for Oracle (ORA-02259)
+autoindexes_primary_keys = True
+needs_datetime_string_cast = False
+needs_upper_for_iops = True
supports_constraints = True
+supports_tablespaces = True
+uses_case_insensitive_names = True
class FormatStylePlaceholderCursor(Database.Cursor):
"""
@@ -67,45 +82,75 @@ class FormatStylePlaceholderCursor(Database.Cursor):
This fixes it -- but note that if you want to use a literal "%s" in a query,
you'll need to use "%%s".
"""
+ def _rewrite_args(self, query, params=None):
+ if params is None:
+ params = []
+ else:
+ # cx_Oracle can't handle unicode parameters, so cast to str for now
+ for i, param in enumerate(params):
+ if type(param) == unicode:
+ try:
+ params[i] = param.encode('utf-8')
+ except UnicodeError:
+ params[i] = str(param)
+ args = [(':arg%d' % i) for i in range(len(params))]
+ query = query % tuple(args)
+ # cx_Oracle wants no trailing ';' for SQL statements. For PL/SQL, it
+ # it does want a trailing ';' but not a trailing '/'. However, these
+ # characters must be included in the original query in case the query
+ # is being passed to SQL*Plus.
+ if query.endswith(';') or query.endswith('/'):
+ query = query[:-1]
+ return query, params
+
def execute(self, query, params=None):
- if params is None: params = []
- query = self.convert_arguments(query, len(params))
+ query, params = self._rewrite_args(query, params)
return Database.Cursor.execute(self, query, params)
def executemany(self, query, params=None):
- if params is None: params = []
- query = self.convert_arguments(query, len(params[0]))
+ query, params = self._rewrite_args(query, params)
return Database.Cursor.executemany(self, query, params)
- def convert_arguments(self, query, num_params):
- # replace occurances of "%s" with ":arg" - Oracle requires colons for parameter placeholders.
- args = [':arg' for i in range(num_params)]
- return query % tuple(args)
-
def quote_name(name):
- return name
+ # SQL92 requires delimited (quoted) names to be case-sensitive. When
+ # not quoted, Oracle has case-insensitive behavior for identifiers, but
+ # always defaults to uppercase.
+ # We simplify things by making Oracle identifiers always uppercase.
+ if not name.startswith('"') and not name.endswith('"'):
+ name = '"%s"' % util.truncate_name(name.upper(), get_max_name_length())
+ return name.upper()
dictfetchone = util.dictfetchone
dictfetchmany = util.dictfetchmany
dictfetchall = util.dictfetchall
def get_last_insert_id(cursor, table_name, pk_name):
- query = "SELECT %s_sq.currval from dual" % table_name
- cursor.execute(query)
+ sq_name = util.truncate_name(table_name, get_max_name_length()-3)
+ cursor.execute('SELECT %s_sq.currval FROM dual' % sq_name)
return cursor.fetchone()[0]
def get_date_extract_sql(lookup_type, table_name):
# lookup_type is 'year', 'month', 'day'
- # http://www.psoug.org/reference/date_func.html
+ # http://download-east.oracle.com/docs/cd/B10501_01/server.920/a96540/functions42a.htm#1017163
return "EXTRACT(%s FROM %s)" % (lookup_type, table_name)
def get_date_trunc_sql(lookup_type, field_name):
- return "EXTRACT(%s FROM TRUNC(%s))" % (lookup_type, field_name)
+ # lookup_type is 'year', 'month', 'day'
+ # Oracle uses TRUNC() for both dates and numbers.
+ # http://download-east.oracle.com/docs/cd/B10501_01/server.920/a96540/functions155a.htm#SQLRF06151
+ if lookup_type == 'day':
+ sql = 'TRUNC(%s)' % (field_name,)
+ else:
+ sql = "TRUNC(%s, '%s')" % (field_name, lookup_type)
+ return sql
+
+def get_datetime_cast_sql():
+ return "TO_TIMESTAMP(%s, 'YYYY-MM-DD HH24:MI:SS.FF')"
def get_limit_offset_sql(limit, offset=None):
# Limits and offset are too complicated to be handled here.
- # Instead, they are handled in django/db/query.py.
- pass
+ # Instead, they are handled in django/db/backends/oracle/query.py.
+ return ""
def get_random_function_sql():
return "DBMS_RANDOM.RANDOM"
@@ -117,40 +162,363 @@ def get_fulltext_search_sql(field_name):
raise NotImplementedError
def get_drop_foreignkey_sql():
- return "DROP FOREIGN KEY"
+ return "DROP CONSTRAINT"
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return 30
+
+def get_start_transaction_sql():
+ return None
+
+def get_tablespace_sql(tablespace, inline=False):
+ return "%sTABLESPACE %s" % ((inline and "USING INDEX " or ""), quote_name(tablespace))
+
+def get_autoinc_sql(table):
+ # To simulate auto-incrementing primary keys in Oracle, we have to
+ # create a sequence and a trigger.
+ sq_name = get_sequence_name(table)
+ tr_name = get_trigger_name(table)
+ sequence_sql = 'CREATE SEQUENCE %s;' % sq_name
+ trigger_sql = """CREATE OR REPLACE TRIGGER %s
+ BEFORE INSERT ON %s
+ FOR EACH ROW
+ WHEN (new.id IS NULL)
+ BEGIN
+ SELECT %s.nextval INTO :new.id FROM dual;
+ END;
+ /""" % (tr_name, quote_name(table), sq_name)
+ return sequence_sql, trigger_sql
+
+def get_drop_sequence(table):
+ return "DROP SEQUENCE %s;" % quote_name(get_sequence_name(table))
+
+def _get_sequence_reset_sql():
+ # TODO: colorize this SQL code with style.SQL_KEYWORD(), etc.
+ return """
+ DECLARE
+ startvalue integer;
+ cval integer;
+ BEGIN
+ LOCK TABLE %(table)s IN SHARE MODE;
+ SELECT NVL(MAX(id), 0) INTO startvalue FROM %(table)s;
+ SELECT %(sequence)s.nextval INTO cval FROM dual;
+ cval := startvalue - cval;
+ IF cval != 0 THEN
+ EXECUTE IMMEDIATE 'ALTER SEQUENCE %(sequence)s MINVALUE 0 INCREMENT BY '||cval;
+ SELECT %(sequence)s.nextval INTO cval FROM dual;
+ EXECUTE IMMEDIATE 'ALTER SEQUENCE %(sequence)s INCREMENT BY 1';
+ END IF;
+ COMMIT;
+ END;
+ /"""
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
themselves) and put the database in an empty 'initial' state
"""
- # Return a list of 'TRUNCATE x;', 'TRUNCATE y;', 'TRUNCATE z;'... style SQL statements
- # TODO - SQL not actually tested against Oracle yet!
- # TODO - autoincrement indices reset required? See other get_sql_flush() implementations
- sql = ['%s %s;' % \
- (style.SQL_KEYWORD('TRUNCATE'),
- style.SQL_FIELD(quote_name(table))
- ) for table in tables]
+ # Return a list of 'TRUNCATE x;', 'TRUNCATE y;',
+ # 'TRUNCATE z;'... style SQL statements
+ if tables:
+ # Oracle does support TRUNCATE, but it seems to get us into
+ # FK referential trouble, whereas DELETE FROM table works.
+ sql = ['%s %s %s;' % \
+ (style.SQL_KEYWORD('DELETE'),
+ style.SQL_KEYWORD('FROM'),
+ style.SQL_FIELD(quote_name(table))
+ ) for table in tables]
+ # Since we've just deleted all the rows, running our sequence
+ # ALTER code will reset the sequence to 0.
+ for sequence_info in sequences:
+ table_name = sequence_info['table']
+ seq_name = get_sequence_name(table_name)
+ query = _get_sequence_reset_sql() % {'sequence':seq_name,
+ 'table':quote_name(table_name)}
+ sql.append(query)
+ return sql
+ else:
+ return []
+
+def get_sequence_name(table):
+ name_length = get_max_name_length() - 3
+ return '%s_SQ' % util.truncate_name(table, name_length).upper()
def get_sql_sequence_reset(style, model_list):
"Returns a list of the SQL statements to reset sequences for the given models."
- # No sequence reset required
- return []
+ from django.db import models
+ output = []
+ query = _get_sequence_reset_sql()
+ for model in model_list:
+ for f in model._meta.fields:
+ if isinstance(f, models.AutoField):
+ sequence_name = get_sequence_name(model._meta.db_table)
+ output.append(query % {'sequence':sequence_name,
+ 'table':model._meta.db_table})
+ break # Only one AutoField is allowed per model, so don't bother continuing.
+ for f in model._meta.many_to_many:
+ sequence_name = get_sequence_name(f.m2m_db_table())
+ output.append(query % {'sequence':sequence_name,
+ 'table':f.m2m_db_table()})
+ return output
+
+def get_trigger_name(table):
+ name_length = get_max_name_length() - 3
+ return '%s_TR' % util.truncate_name(table, name_length).upper()
+
+def get_query_set_class(DefaultQuerySet):
+ "Create a custom QuerySet class for Oracle."
+
+ from django.db import backend, connection
+ from django.db.models.query import EmptyResultSet, GET_ITERATOR_CHUNK_SIZE, quote_only_if_word
+
+ class OracleQuerySet(DefaultQuerySet):
+
+ def iterator(self):
+ "Performs the SELECT database lookup of this QuerySet."
+
+ from django.db.models.query import get_cached_row
+
+ # self._select is a dictionary, and dictionaries' key order is
+ # undefined, so we convert it to a list of tuples.
+ extra_select = self._select.items()
+
+ full_query = None
+
+ try:
+ try:
+ select, sql, params, full_query = self._get_sql_clause(get_full_query=True)
+ except TypeError:
+ select, sql, params = self._get_sql_clause()
+ except EmptyResultSet:
+ raise StopIteration
+ if not full_query:
+ full_query = "SELECT %s%s\n%s" % \
+ ((self._distinct and "DISTINCT " or ""),
+ ', '.join(select), sql)
+
+ cursor = connection.cursor()
+ cursor.execute(full_query, params)
+
+ fill_cache = self._select_related
+ fields = self.model._meta.fields
+ index_end = len(fields)
+
+ # so here's the logic;
+ # 1. retrieve each row in turn
+ # 2. convert NCLOBs
+
+ while 1:
+ rows = cursor.fetchmany(GET_ITERATOR_CHUNK_SIZE)
+ if not rows:
+ raise StopIteration
+ for row in rows:
+ row = self.resolve_columns(row, fields)
+ if fill_cache:
+ obj, index_end = get_cached_row(klass=self.model, row=row,
+ index_start=0, max_depth=self._max_related_depth)
+ else:
+ obj = self.model(*row[:index_end])
+ for i, k in enumerate(extra_select):
+ setattr(obj, k[0], row[index_end+i])
+ yield obj
+
+
+ def _get_sql_clause(self, get_full_query=False):
+ from django.db.models.query import fill_table_cache, \
+ handle_legacy_orderlist, orderfield2column
+
+ opts = self.model._meta
+
+ # Construct the fundamental parts of the query: SELECT X FROM Y WHERE Z.
+ select = ["%s.%s" % (backend.quote_name(opts.db_table), backend.quote_name(f.column)) for f in opts.fields]
+ tables = [quote_only_if_word(t) for t in self._tables]
+ joins = SortedDict()
+ where = self._where[:]
+ params = self._params[:]
+
+ # Convert self._filters into SQL.
+ joins2, where2, params2 = self._filters.get_sql(opts)
+ joins.update(joins2)
+ where.extend(where2)
+ params.extend(params2)
+
+ # Add additional tables and WHERE clauses based on select_related.
+ if self._select_related:
+ fill_table_cache(opts, select, tables, where, opts.db_table, [opts.db_table])
+
+ # Add any additional SELECTs.
+ if self._select:
+ select.extend(['(%s) AS %s' % (quote_only_if_word(s[1]), backend.quote_name(s[0])) for s in self._select.items()])
+
+ # Start composing the body of the SQL statement.
+ sql = [" FROM", backend.quote_name(opts.db_table)]
+
+ # Compose the join dictionary into SQL describing the joins.
+ if joins:
+ sql.append(" ".join(["%s %s %s ON %s" % (join_type, table, alias, condition)
+ for (alias, (table, join_type, condition)) in joins.items()]))
+
+ # Compose the tables clause into SQL.
+ if tables:
+ sql.append(", " + ", ".join(tables))
+
+ # Compose the where clause into SQL.
+ if where:
+ sql.append(where and "WHERE " + " AND ".join(where))
+
+ # ORDER BY clause
+ order_by = []
+ if self._order_by is not None:
+ ordering_to_use = self._order_by
+ else:
+ ordering_to_use = opts.ordering
+ for f in handle_legacy_orderlist(ordering_to_use):
+ if f == '?': # Special case.
+ order_by.append(backend.get_random_function_sql())
+ else:
+ if f.startswith('-'):
+ col_name = f[1:]
+ order = "DESC"
+ else:
+ col_name = f
+ order = "ASC"
+ if "." in col_name:
+ table_prefix, col_name = col_name.split('.', 1)
+ table_prefix = backend.quote_name(table_prefix) + '.'
+ else:
+ # Use the database table as a column prefix if it wasn't given,
+ # and if the requested column isn't a custom SELECT.
+ if "." not in col_name and col_name not in (self._select or ()):
+ table_prefix = backend.quote_name(opts.db_table) + '.'
+ else:
+ table_prefix = ''
+ order_by.append('%s%s %s' % (table_prefix, backend.quote_name(orderfield2column(col_name, opts)), order))
+ if order_by:
+ sql.append("ORDER BY " + ", ".join(order_by))
+
+ # Look for column name collisions in the select elements
+ # and fix them with an AS alias. This allows us to do a
+ # SELECT * later in the paging query.
+ cols = [clause.split('.')[-1] for clause in select]
+ for index, col in enumerate(cols):
+ if cols.count(col) > 1:
+ col = '%s%d' % (col.replace('"', ''), index)
+ cols[index] = col
+ select[index] = '%s AS %s' % (select[index], col)
+
+ # LIMIT and OFFSET clauses
+ # To support limits and offsets, Oracle requires some funky rewriting of an otherwise normal looking query.
+ select_clause = ",".join(select)
+ distinct = (self._distinct and "DISTINCT " or "")
+
+ if order_by:
+ order_by_clause = " OVER (ORDER BY %s )" % (", ".join(order_by))
+ else:
+ #Oracle's row_number() function always requires an order-by clause.
+ #So we need to define a default order-by, since none was provided.
+ order_by_clause = " OVER (ORDER BY %s.%s)" % \
+ (backend.quote_name(opts.db_table),
+ backend.quote_name(opts.fields[0].db_column or opts.fields[0].column))
+ # limit_and_offset_clause
+ if self._limit is None:
+ assert self._offset is None, "'offset' is not allowed without 'limit'"
+
+ if self._offset is not None:
+ offset = int(self._offset)
+ else:
+ offset = 0
+ if self._limit is not None:
+ limit = int(self._limit)
+ else:
+ limit = None
+
+ limit_and_offset_clause = ''
+ if limit is not None:
+ limit_and_offset_clause = "WHERE rn > %s AND rn <= %s" % (offset, limit+offset)
+ elif offset:
+ limit_and_offset_clause = "WHERE rn > %s" % (offset)
+
+ if len(limit_and_offset_clause) > 0:
+ fmt = \
+"""SELECT * FROM
+ (SELECT %s%s,
+ ROW_NUMBER()%s AS rn
+ %s)
+%s"""
+ full_query = fmt % (distinct, select_clause,
+ order_by_clause, ' '.join(sql).strip(),
+ limit_and_offset_clause)
+ else:
+ full_query = None
+
+ if get_full_query:
+ return select, " ".join(sql), params, full_query
+ else:
+ return select, " ".join(sql), params
+
+ def resolve_columns(self, row, fields=()):
+ from django.db.models.fields import DateField, DateTimeField, \
+ TimeField, BooleanField, NullBooleanField, DecimalField, Field
+ values = []
+ for value, field in map(None, row, fields):
+ if isinstance(value, Database.LOB):
+ value = value.read()
+ # Oracle stores empty strings as null. We need to undo this in
+ # order to adhere to the Django convention of using the empty
+ # string instead of null, but only if the field accepts the
+ # empty string.
+ if value is None and isinstance(field, Field) and field.empty_strings_allowed:
+ value = ''
+ # Convert 1 or 0 to True or False
+ elif value in (1, 0) and isinstance(field, (BooleanField, NullBooleanField)):
+ value = bool(value)
+ # Convert floats to decimals
+ elif value is not None and isinstance(field, DecimalField):
+ value = util.typecast_decimal(field.format_number(value))
+ # cx_Oracle always returns datetime.datetime objects for
+ # DATE and TIMESTAMP columns, but Django wants to see a
+ # python datetime.date, .time, or .datetime. We use the type
+ # of the Field to determine which to cast to, but it's not
+ # always available.
+ # As a workaround, we cast to date if all the time-related
+ # values are 0, or to time if the date is 1/1/1900.
+ # This could be cleaned a bit by adding a method to the Field
+ # classes to normalize values from the database (the to_python
+ # method is used for validation and isn't what we want here).
+ elif isinstance(value, Database.Timestamp):
+ # In Python 2.3, the cx_Oracle driver returns its own
+ # Timestamp object that we must convert to a datetime class.
+ if not isinstance(value, datetime.datetime):
+ value = datetime.datetime(value.year, value.month, value.day, value.hour,
+ value.minute, value.second, value.fsecond)
+ if isinstance(field, DateTimeField):
+ pass # DateTimeField subclasses DateField so must be checked first.
+ elif isinstance(field, DateField):
+ value = value.date()
+ elif isinstance(field, TimeField) or (value.year == 1900 and value.month == value.day == 1):
+ value = value.time()
+ elif value.hour == value.minute == value.second == value.microsecond == 0:
+ value = value.date()
+ values.append(value)
+ return values
+
+ return OracleQuerySet
+
OPERATOR_MAPPING = {
'exact': '= %s',
- 'iexact': 'LIKE %s',
- 'contains': 'LIKE %s',
- 'icontains': 'LIKE %s',
+ 'iexact': '= UPPER(%s)',
+ 'contains': "LIKE %s ESCAPE '\\'",
+ 'icontains': "LIKE UPPER(%s) ESCAPE '\\'",
'gt': '> %s',
'gte': '>= %s',
'lt': '< %s',
'lte': '<= %s',
- 'startswith': 'LIKE %s',
- 'endswith': 'LIKE %s',
- 'istartswith': 'LIKE %s',
- 'iendswith': 'LIKE %s',
+ 'startswith': "LIKE %s ESCAPE '\\'",
+ 'endswith': "LIKE %s ESCAPE '\\'",
+ 'istartswith': "LIKE UPPER(%s) ESCAPE '\\'",
+ 'iendswith': "LIKE UPPER(%s) ESCAPE '\\'",
}
diff --git a/django/db/backends/oracle/client.py b/django/db/backends/oracle/client.py
index 7e32ebef2f..372783aa97 100644
--- a/django/db/backends/oracle/client.py
+++ b/django/db/backends/oracle/client.py
@@ -2,9 +2,10 @@ from django.conf import settings
import os
def runshell():
- args = ''
- args += settings.DATABASE_USER
+ dsn = settings.DATABASE_USER
if settings.DATABASE_PASSWORD:
- args += "/%s" % settings.DATABASE_PASSWORD
- args += "@%s" % settings.DATABASE_NAME
- os.execvp('sqlplus', args)
+ dsn += "/%s" % settings.DATABASE_PASSWORD
+ if settings.DATABASE_NAME:
+ dsn += "@%s" % settings.DATABASE_NAME
+ args = ["sqlplus", "-L", dsn]
+ os.execvp("sqlplus", args)
diff --git a/django/db/backends/oracle/creation.py b/django/db/backends/oracle/creation.py
index 303c7d917f..6d5039add8 100644
--- a/django/db/backends/oracle/creation.py
+++ b/django/db/backends/oracle/creation.py
@@ -1,26 +1,304 @@
+import sys, time
+from django.core import management
+
+# This dictionary maps Field objects to their associated Oracle column
+# types, as strings. Column-type strings can contain format strings; they'll
+# be interpolated against the values of Field.__dict__ before being output.
+# If a column type is set to None, it won't be included in the output.
DATA_TYPES = {
- 'AutoField': 'number(38)',
- 'BooleanField': 'number(1)',
- 'CharField': 'varchar2(%(maxlength)s)',
- 'CommaSeparatedIntegerField': 'varchar2(%(maxlength)s)',
- 'DateField': 'date',
- 'DateTimeField': 'date',
- 'DecimalField': 'number(%(max_digits)s, %(decimal_places)s)',
- 'FileField': 'varchar2(100)',
- 'FilePathField': 'varchar2(100)',
- 'FloatField': 'double precision',
- 'ImageField': 'varchar2(100)',
- 'IntegerField': 'integer',
- 'IPAddressField': 'char(15)',
- 'NullBooleanField': 'integer',
- 'OneToOneField': 'integer',
- 'PhoneNumberField': 'varchar(20)',
- 'PositiveIntegerField': 'integer',
- 'PositiveSmallIntegerField': 'smallint',
- 'SlugField': 'varchar(50)',
- 'SmallIntegerField': 'smallint',
- 'TextField': 'long',
- 'TimeField': 'timestamp',
- 'USStateField': 'varchar(2)',
+ 'AutoField': 'NUMBER(11)',
+ 'BooleanField': 'NUMBER(1) CHECK (%(column)s IN (0,1))',
+ 'CharField': 'VARCHAR2(%(maxlength)s)',
+ 'CommaSeparatedIntegerField': 'VARCHAR2(%(maxlength)s)',
+ 'DateField': 'DATE',
+ 'DateTimeField': 'TIMESTAMP',
+ 'DecimalField': 'NUMBER(%(max_digits)s, %(decimal_places)s)',
+ 'FileField': 'VARCHAR2(100)',
+ 'FilePathField': 'VARCHAR2(100)',
+ 'FloatField': 'DOUBLE PRECISION',
+ 'ImageField': 'VARCHAR2(100)',
+ 'IntegerField': 'NUMBER(11)',
+ 'IPAddressField': 'VARCHAR2(15)',
+ 'NullBooleanField': 'NUMBER(1) CHECK ((%(column)s IN (0,1)) OR (%(column)s IS NULL))',
+ 'OneToOneField': 'NUMBER(11)',
+ 'PhoneNumberField': 'VARCHAR2(20)',
+ 'PositiveIntegerField': 'NUMBER(11) CHECK (%(column)s >= 0)',
+ 'PositiveSmallIntegerField': 'NUMBER(11) CHECK (%(column)s >= 0)',
+ 'SlugField': 'VARCHAR2(50)',
+ 'SmallIntegerField': 'NUMBER(11)',
+ 'TextField': 'NCLOB',
+ 'TimeField': 'TIMESTAMP',
+ 'URLField': 'VARCHAR2(200)',
+ 'USStateField': 'CHAR(2)',
'NoField': None,
}
+
+TEST_DATABASE_PREFIX = 'test_'
+PASSWORD = 'Im_a_lumberjack'
+REMEMBER = {}
+
+
+def create_test_db(settings, connection, backend, verbosity=1, autoclobber=False):
+
+ TEST_DATABASE_NAME = _test_database_name(settings)
+ TEST_DATABASE_USER = _test_database_user(settings)
+ TEST_DATABASE_PASSWD = _test_database_passwd(settings)
+ TEST_DATABASE_TBLSPACE = _test_database_tblspace(settings)
+ TEST_DATABASE_TBLSPACE_TMP = _test_database_tblspace_tmp(settings)
+
+ parameters = {
+ 'dbname': TEST_DATABASE_NAME,
+ 'user': TEST_DATABASE_USER,
+ 'password': TEST_DATABASE_PASSWD,
+ 'tblspace': TEST_DATABASE_TBLSPACE,
+ 'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
+ }
+
+ REMEMBER['user'] = settings.DATABASE_USER
+ REMEMBER['passwd'] = settings.DATABASE_PASSWORD
+
+ cursor = connection.cursor()
+ if _test_database_create(settings):
+ if verbosity >= 1:
+ print 'Creating test database...'
+ try:
+ _create_test_db(cursor, parameters, verbosity)
+ except Exception, e:
+ sys.stderr.write("Got an error creating the test database: %s\n" % e)
+ if not autoclobber:
+ confirm = raw_input("It appears the test database, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_NAME)
+ if autoclobber or confirm == 'yes':
+ try:
+ if verbosity >= 1:
+ print "Destroying old test database..."
+ _destroy_test_db(cursor, parameters, verbosity)
+ if verbosity >= 1:
+ print "Creating test database..."
+ _create_test_db(cursor, parameters, verbosity)
+ except Exception, e:
+ sys.stderr.write("Got an error recreating the test database: %s\n" % e)
+ sys.exit(2)
+ else:
+ print "Tests cancelled."
+ sys.exit(1)
+
+ if _test_user_create(settings):
+ if verbosity >= 1:
+ print "Creating test user..."
+ try:
+ _create_test_user(cursor, parameters, verbosity)
+ except Exception, e:
+ sys.stderr.write("Got an error creating the test user: %s\n" % e)
+ if not autoclobber:
+ confirm = raw_input("It appears the test user, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_USER)
+ if autoclobber or confirm == 'yes':
+ try:
+ if verbosity >= 1:
+ print "Destroying old test user..."
+ _destroy_test_user(cursor, parameters, verbosity)
+ if verbosity >= 1:
+ print "Creating test user..."
+ _create_test_user(cursor, parameters, verbosity)
+ except Exception, e:
+ sys.stderr.write("Got an error recreating the test user: %s\n" % e)
+ sys.exit(2)
+ else:
+ print "Tests cancelled."
+ sys.exit(1)
+
+ connection.close()
+ settings.DATABASE_USER = TEST_DATABASE_USER
+ settings.DATABASE_PASSWORD = TEST_DATABASE_PASSWD
+
+ management.syncdb(verbosity, interactive=False)
+
+ # Get a cursor (even though we don't need one yet). This has
+ # the side effect of initializing the test database.
+ cursor = connection.cursor()
+
+
+def destroy_test_db(settings, connection, backend, old_database_name, verbosity=1):
+ connection.close()
+
+ TEST_DATABASE_NAME = _test_database_name(settings)
+ TEST_DATABASE_USER = _test_database_user(settings)
+ TEST_DATABASE_PASSWD = _test_database_passwd(settings)
+ TEST_DATABASE_TBLSPACE = _test_database_tblspace(settings)
+ TEST_DATABASE_TBLSPACE_TMP = _test_database_tblspace_tmp(settings)
+
+ settings.DATABASE_NAME = old_database_name
+ settings.DATABASE_USER = REMEMBER['user']
+ settings.DATABASE_PASSWORD = REMEMBER['passwd']
+
+ parameters = {
+ 'dbname': TEST_DATABASE_NAME,
+ 'user': TEST_DATABASE_USER,
+ 'password': TEST_DATABASE_PASSWD,
+ 'tblspace': TEST_DATABASE_TBLSPACE,
+ 'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
+ }
+
+ REMEMBER['user'] = settings.DATABASE_USER
+ REMEMBER['passwd'] = settings.DATABASE_PASSWORD
+
+ cursor = connection.cursor()
+ time.sleep(1) # To avoid "database is being accessed by other users" errors.
+ if _test_user_create(settings):
+ if verbosity >= 1:
+ print 'Destroying test user...'
+ _destroy_test_user(cursor, parameters, verbosity)
+ if _test_database_create(settings):
+ if verbosity >= 1:
+ print 'Destroying test database...'
+ _destroy_test_db(cursor, parameters, verbosity)
+ connection.close()
+
+
+def _create_test_db(cursor, parameters, verbosity):
+ if verbosity >= 2:
+ print "_create_test_db(): dbname = %s" % parameters['dbname']
+ statements = [
+ """CREATE TABLESPACE %(tblspace)s
+ DATAFILE '%(tblspace)s.dbf' SIZE 20M
+ REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
+ """,
+ """CREATE TEMPORARY TABLESPACE %(tblspace_temp)s
+ TEMPFILE '%(tblspace_temp)s.dbf' SIZE 20M
+ REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
+ """,
+ ]
+ _execute_statements(cursor, statements, parameters, verbosity)
+
+
+def _create_test_user(cursor, parameters, verbosity):
+ if verbosity >= 2:
+ print "_create_test_user(): username = %s" % parameters['user']
+ statements = [
+ """CREATE USER %(user)s
+ IDENTIFIED BY %(password)s
+ DEFAULT TABLESPACE %(tblspace)s
+ TEMPORARY TABLESPACE %(tblspace_temp)s
+ """,
+ """GRANT CONNECT, RESOURCE TO %(user)s""",
+ ]
+ _execute_statements(cursor, statements, parameters, verbosity)
+
+
+def _destroy_test_db(cursor, parameters, verbosity):
+ if verbosity >= 2:
+ print "_destroy_test_db(): dbname=%s" % parameters['dbname']
+ statements = [
+ 'DROP TABLESPACE %(tblspace)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
+ 'DROP TABLESPACE %(tblspace_temp)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
+ ]
+ _execute_statements(cursor, statements, parameters, verbosity)
+
+
+def _destroy_test_user(cursor, parameters, verbosity):
+ if verbosity >= 2:
+ print "_destroy_test_user(): user=%s" % parameters['user']
+ print "Be patient. This can take some time..."
+ statements = [
+ 'DROP USER %(user)s CASCADE',
+ ]
+ _execute_statements(cursor, statements, parameters, verbosity)
+
+
+def _execute_statements(cursor, statements, parameters, verbosity):
+ for template in statements:
+ stmt = template % parameters
+ if verbosity >= 2:
+ print stmt
+ try:
+ cursor.execute(stmt)
+ except Exception, err:
+ sys.stderr.write("Failed (%s)\n" % (err))
+ raise
+
+
+def _test_database_name(settings):
+ name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
+ try:
+ if settings.TEST_DATABASE_NAME:
+ name = settings.TEST_DATABASE_NAME
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_database_create(settings):
+ name = True
+ try:
+ if settings.TEST_DATABASE_CREATE:
+ name = True
+ else:
+ name = False
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_user_create(settings):
+ name = True
+ try:
+ if settings.TEST_USER_CREATE:
+ name = True
+ else:
+ name = False
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_database_user(settings):
+ name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
+ try:
+ if settings.TEST_DATABASE_USER:
+ name = settings.TEST_DATABASE_USER
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_database_passwd(settings):
+ name = PASSWORD
+ try:
+ if settings.TEST_DATABASE_PASSWD:
+ name = settings.TEST_DATABASE_PASSWD
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_database_tblspace(settings):
+ name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
+ try:
+ if settings.TEST_DATABASE_TBLSPACE:
+ name = settings.TEST_DATABASE_TBLSPACE
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
+
+
+def _test_database_tblspace_tmp(settings):
+ name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME + '_temp'
+ try:
+ if settings.TEST_DATABASE_TBLSPACE_TMP:
+ name = settings.TEST_DATABASE_TBLSPACE_TMP
+ except AttributeError:
+ pass
+ except:
+ raise
+ return name
diff --git a/django/db/backends/oracle/introspection.py b/django/db/backends/oracle/introspection.py
index 7634206178..44430a0029 100644
--- a/django/db/backends/oracle/introspection.py
+++ b/django/db/backends/oracle/introspection.py
@@ -1,14 +1,19 @@
+from django.db.backends.oracle.base import quote_name
import re
+import cx_Oracle
+
foreign_key_re = re.compile(r"\sCONSTRAINT `[^`]*` FOREIGN KEY \(`([^`]*)`\) REFERENCES `([^`]*)` \(`([^`]*)`\)")
def get_table_list(cursor):
"Returns a list of table names in the current database."
cursor.execute("SELECT TABLE_NAME FROM USER_TABLES")
- return [row[0] for row in cursor.fetchall()]
+ return [row[0].upper() for row in cursor.fetchall()]
def get_table_description(cursor, table_name):
- return table_name
+ "Returns a description of the table, with the DB-API cursor.description interface."
+ cursor.execute("SELECT * FROM %s WHERE ROWNUM < 2" % quote_name(table_name))
+ return cursor.description
def _name_to_index(cursor, table_name):
"""
@@ -22,7 +27,24 @@ def get_relations(cursor, table_name):
Returns a dictionary of {field_index: (field_index_other_table, other_table)}
representing all relationships to the given table. Indexes are 0-based.
"""
- raise NotImplementedError
+ cursor.execute("""
+SELECT ta.column_id - 1, tb.table_name, tb.column_id - 1
+FROM user_constraints, USER_CONS_COLUMNS ca, USER_CONS_COLUMNS cb,
+ user_tab_cols ta, user_tab_cols tb
+WHERE user_constraints.table_name = %s AND
+ ta.table_name = %s AND
+ ta.column_name = ca.column_name AND
+ ca.table_name = %s AND
+ user_constraints.constraint_name = ca.constraint_name AND
+ user_constraints.r_constraint_name = cb.constraint_name AND
+ cb.table_name = tb.table_name AND
+ cb.column_name = tb.column_name AND
+ ca.position = cb.position""", [table_name, table_name, table_name])
+
+ relations = {}
+ for row in cursor.fetchall():
+ relations[row[0]] = (row[2], row[1])
+ return relations
def get_indexes(cursor, table_name):
"""
@@ -31,20 +53,46 @@ def get_indexes(cursor, table_name):
{'primary_key': boolean representing whether it's the primary key,
'unique': boolean representing whether it's a unique index}
"""
- raise NotImplementedError
+ # This query retrieves each index on the given table, including the
+ # first associated field name
+ # "We were in the nick of time; you were in great peril!"
+ sql = """
+WITH primarycols AS (
+ SELECT user_cons_columns.table_name, user_cons_columns.column_name, 1 AS PRIMARYCOL
+ FROM user_cons_columns, user_constraints
+ WHERE user_cons_columns.constraint_name = user_constraints.constraint_name AND
+ user_constraints.constraint_type = 'P' AND
+ user_cons_columns.table_name = %s),
+ uniquecols AS (
+ SELECT user_ind_columns.table_name, user_ind_columns.column_name, 1 AS UNIQUECOL
+ FROM user_indexes, user_ind_columns
+ WHERE uniqueness = 'UNIQUE' AND
+ user_indexes.index_name = user_ind_columns.index_name AND
+ user_ind_columns.table_name = %s)
+SELECT allcols.column_name, primarycols.primarycol, uniquecols.UNIQUECOL
+FROM (SELECT column_name FROM primarycols UNION SELECT column_name FROM
+uniquecols) allcols,
+ primarycols, uniquecols
+WHERE allcols.column_name = primarycols.column_name (+) AND
+ allcols.column_name = uniquecols.column_name (+)
+ """
+ cursor.execute(sql, [table_name, table_name])
+ indexes = {}
+ for row in cursor.fetchall():
+ # row[1] (idx.indkey) is stored in the DB as an array. It comes out as
+ # a string of space-separated integers. This designates the field
+ # indexes (1-based) of the fields that have indexes on the table.
+ # Here, we skip any indexes across multiple fields.
+ indexes[row[0]] = {'primary_key': row[1], 'unique': row[2]}
+ return indexes
-# Maps type codes to Django Field types.
+# Maps type objects to Django Field types.
DATA_TYPES_REVERSE = {
- 16: 'BooleanField',
- 21: 'SmallIntegerField',
- 23: 'IntegerField',
- 25: 'TextField',
- 869: 'IPAddressField',
- 1043: 'CharField',
- 1082: 'DateField',
- 1083: 'TimeField',
- 1114: 'DateTimeField',
- 1184: 'DateTimeField',
- 1266: 'TimeField',
- 1700: 'DecimalField',
+ cx_Oracle.CLOB: 'TextField',
+ cx_Oracle.DATETIME: 'DateTimeField',
+ cx_Oracle.FIXED_CHAR: 'CharField',
+ cx_Oracle.NCLOB: 'TextField',
+ cx_Oracle.NUMBER: 'DecimalField',
+ cx_Oracle.STRING: 'CharField',
+ cx_Oracle.TIMESTAMP: 'DateTimeField',
}
diff --git a/django/db/backends/postgresql/base.py b/django/db/backends/postgresql/base.py
index fedbb6b7f1..351b553506 100644
--- a/django/db/backends/postgresql/base.py
+++ b/django/db/backends/postgresql/base.py
@@ -87,7 +87,7 @@ class DatabaseWrapper(local):
global postgres_version
if not postgres_version:
cursor.execute("SELECT version()")
- postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')]
+ postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')]
if settings.DEBUG:
return util.CursorDebugWrapper(cursor, self)
return cursor
@@ -105,7 +105,14 @@ class DatabaseWrapper(local):
self.connection.close()
self.connection = None
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = True
+needs_datetime_string_cast = True
+needs_upper_for_iops = False
supports_constraints = True
+supports_tablespaces = False
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith('"') and name.endswith('"'):
@@ -138,6 +145,9 @@ def get_date_trunc_sql(lookup_type, field_name):
# http://www.postgresql.org/docs/8.0/static/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
return "DATE_TRUNC('%s', %s)" % (lookup_type, field_name)
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
sql = "LIMIT %s" % limit
if offset and offset != 0:
@@ -149,7 +159,7 @@ def get_random_function_sql():
def get_deferrable_sql():
return " DEFERRABLE INITIALLY DEFERRED"
-
+
def get_fulltext_search_sql(field_name):
raise NotImplementedError
@@ -159,12 +169,21 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return None
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
themselves) and put the database in an empty 'initial' state
-
- """
+
+ """
if tables:
if postgres_version[0] >= 8 and postgres_version[1] >= 1:
# Postgres 8.1+ can do 'TRUNCATE x, y, z...;'. In fact, it *has to* in order to be able to
@@ -175,7 +194,7 @@ def get_sql_flush(style, tables, sequences):
style.SQL_FIELD(', '.join([quote_name(table) for table in tables]))
)]
else:
- # Older versions of Postgres can't do TRUNCATE in a single call, so they must use
+ # Older versions of Postgres can't do TRUNCATE in a single call, so they must use
# a simple delete.
sql = ['%s %s %s;' % \
(style.SQL_KEYWORD('DELETE'),
@@ -243,7 +262,7 @@ def get_sql_sequence_reset(style, model_list):
style.SQL_KEYWORD('FROM'),
style.SQL_TABLE(f.m2m_db_table())))
return output
-
+
# Register these custom typecasts, because Django expects dates/times to be
# in Python's native (standard-library) datetime/time format, whereas psycopg
# use mx.DateTime by default.
diff --git a/django/db/backends/postgresql_psycopg2/base.py b/django/db/backends/postgresql_psycopg2/base.py
index d9ad363ac1..36f4d97a22 100644
--- a/django/db/backends/postgresql_psycopg2/base.py
+++ b/django/db/backends/postgresql_psycopg2/base.py
@@ -55,7 +55,7 @@ class DatabaseWrapper(local):
global postgres_version
if not postgres_version:
cursor.execute("SELECT version()")
- postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')]
+ postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')]
if settings.DEBUG:
return util.CursorDebugWrapper(cursor, self)
return cursor
@@ -73,7 +73,14 @@ class DatabaseWrapper(local):
self.connection.close()
self.connection = None
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = True
+needs_datetime_string_cast = False
+needs_upper_for_iops = False
supports_constraints = True
+supports_tablespaces = False
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith('"') and name.endswith('"'):
@@ -98,6 +105,9 @@ def get_date_trunc_sql(lookup_type, field_name):
# http://www.postgresql.org/docs/8.0/static/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC
return "DATE_TRUNC('%s', %s)" % (lookup_type, field_name)
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
sql = "LIMIT %s" % limit
if offset and offset != 0:
@@ -119,6 +129,15 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "DEFAULT"
+def get_max_name_length():
+ return None
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
@@ -139,7 +158,7 @@ def get_sql_flush(style, tables, sequences):
style.SQL_KEYWORD('FROM'),
style.SQL_FIELD(quote_name(table))
) for table in tables]
-
+
# 'ALTER SEQUENCE sequence_name RESTART WITH 1;'... style SQL statements
# to reset sequence indices
for sequence in sequences:
@@ -200,7 +219,7 @@ def get_sql_sequence_reset(style, model_list):
style.SQL_KEYWORD('FROM'),
style.SQL_TABLE(f.m2m_db_table())))
return output
-
+
OPERATOR_MAPPING = {
'exact': '= %s',
'iexact': 'ILIKE %s',
diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index 5cd67a32f5..b753879d7a 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -107,7 +107,14 @@ class SQLiteCursorWrapper(Database.Cursor):
def convert_query(self, query, num_params):
return query % tuple("?" * num_params)
+allows_group_by_ordinal = True
+allows_unique_and_pk = True
+autoindexes_primary_keys = True
+needs_datetime_string_cast = True
+needs_upper_for_iops = False
supports_constraints = False
+supports_tablespaces = False
+uses_case_insensitive_names = False
def quote_name(name):
if name.startswith('"') and name.endswith('"'):
@@ -139,6 +146,9 @@ def get_date_trunc_sql(lookup_type, field_name):
# sqlite doesn't support DATE_TRUNC, so we fake it as above.
return 'django_date_trunc("%s", %s)' % (lookup_type.lower(), field_name)
+def get_datetime_cast_sql():
+ return None
+
def get_limit_offset_sql(limit, offset=None):
sql = "LIMIT %s" % limit
if offset and offset != 0:
@@ -160,11 +170,20 @@ def get_drop_foreignkey_sql():
def get_pk_default_value():
return "NULL"
+def get_max_name_length():
+ return None
+
+def get_start_transaction_sql():
+ return "BEGIN;"
+
+def get_autoinc_sql(table):
+ return None
+
def get_sql_flush(style, tables, sequences):
"""Return a list of SQL statements required to remove all data from
all tables in the database (without actually removing the tables
themselves) and put the database in an empty 'initial' state
-
+
"""
# NB: The generated SQL below is specific to SQLite
# Note: The DELETE FROM... SQL generated below works for SQLite databases
@@ -182,7 +201,7 @@ def get_sql_sequence_reset(style, model_list):
"Returns a list of the SQL statements to reset sequences for the given models."
# No sequence reset required
return []
-
+
def _sqlite_date_trunc(lookup_type, dt):
try:
dt = util.typecast_timestamp(dt)
diff --git a/django/db/backends/util.py b/django/db/backends/util.py
index 81c752e664..58f2d1e990 100644
--- a/django/db/backends/util.py
+++ b/django/db/backends/util.py
@@ -1,4 +1,5 @@
import datetime
+import md5
from time import time
try:
@@ -107,6 +108,16 @@ def rev_typecast_decimal(d):
return None
return str(d)
+def truncate_name(name, length=None):
+ """Shortens a string to a repeatable mangled version with the given length.
+ """
+ if length is None or len(name) <= length:
+ return name
+
+ hash = md5.md5(name).hexdigest()[:4]
+
+ return '%s%s' % (name[:length-4], hash)
+
##################################################################################
# Helper functions for dictfetch* for databases that don't natively support them #
##################################################################################
diff --git a/django/db/models/base.py b/django/db/models/base.py
index e02d6de861..b1c4a43628 100644
--- a/django/db/models/base.py
+++ b/django/db/models/base.py
@@ -96,9 +96,9 @@ class Model(object):
def __init__(self, *args, **kwargs):
dispatcher.send(signal=signals.pre_init, sender=self.__class__, args=args, kwargs=kwargs)
-
+
# There is a rather weird disparity here; if kwargs, it's set, then args
- # overrides it. It should be one or the other; don't duplicate the work
+ # overrides it. It should be one or the other; don't duplicate the work
# The reason for the kwargs check is that standard iterator passes in by
# args, and nstantiation for iteration is 33% faster.
args_len = len(args)
@@ -122,10 +122,10 @@ class Model(object):
# Maintain compatibility with existing calls.
if isinstance(field.rel, ManyToOneRel):
kwargs.pop(field.attname, None)
-
+
# Now we're left with the unprocessed fields that *must* come from
# keywords, or default.
-
+
for field in fields_iter:
if kwargs:
if isinstance(field.rel, ManyToOneRel):
@@ -147,7 +147,7 @@ class Model(object):
try:
val = getattr(rel_obj, field.rel.get_related_field().attname)
except AttributeError:
- raise TypeError("Invalid value: %r should be a %s instance, not a %s" %
+ raise TypeError("Invalid value: %r should be a %s instance, not a %s" %
(field.name, field.rel.to, type(rel_obj)))
else:
val = kwargs.pop(field.attname, field.get_default())
@@ -210,17 +210,18 @@ class Model(object):
record_exists = True
if pk_set:
# Determine whether a record with the primary key already exists.
- cursor.execute("SELECT 1 FROM %s WHERE %s=%%s LIMIT 1" % \
- (backend.quote_name(self._meta.db_table), backend.quote_name(self._meta.pk.column)), [pk_val])
+ cursor.execute("SELECT COUNT(*) FROM %s WHERE %s=%%s" % \
+ (backend.quote_name(self._meta.db_table), backend.quote_name(self._meta.pk.column)),
+ self._meta.pk.get_db_prep_lookup('exact', pk_val))
# If it does already exist, do an UPDATE.
- if cursor.fetchone():
+ if cursor.fetchone()[0] > 0:
db_values = [f.get_db_prep_save(f.pre_save(self, False)) for f in non_pks]
if db_values:
cursor.execute("UPDATE %s SET %s WHERE %s=%%s" % \
(backend.quote_name(self._meta.db_table),
','.join(['%s=%%s' % backend.quote_name(f.column) for f in non_pks]),
backend.quote_name(self._meta.pk.column)),
- db_values + [pk_val])
+ db_values + self._meta.pk.get_db_prep_lookup('exact', pk_val))
else:
record_exists = False
if not pk_set or not record_exists:
diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 136ce31b8b..016e26099b 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -74,12 +74,16 @@ class Field(object):
core=False, rel=None, default=NOT_PROVIDED, editable=True, serialize=True,
prepopulate_from=None, unique_for_date=None, unique_for_month=None,
unique_for_year=None, validator_list=None, choices=None, radio_admin=None,
- help_text='', db_column=None):
+ help_text='', db_column=None, db_tablespace=None):
self.name = name
self.verbose_name = verbose_name
self.primary_key = primary_key
self.maxlength, self.unique = maxlength, unique
self.blank, self.null = blank, null
+ # Oracle treats the empty string ('') as null, so coerce the null
+ # option whenever '' is a possible value.
+ if self.empty_strings_allowed and settings.DATABASE_ENGINE == 'oracle':
+ self.null = True
self.core, self.rel, self.default = core, rel, default
self.editable = editable
self.serialize = serialize
@@ -91,6 +95,7 @@ class Field(object):
self.radio_admin = radio_admin
self.help_text = help_text
self.db_column = db_column
+ self.db_tablespace = db_tablespace
# Set db_index to True if the field has a relationship and doesn't explicitly set db_index.
self.db_index = db_index
@@ -201,7 +206,7 @@ class Field(object):
if callable(self.default):
return self.default()
return self.default
- if not self.empty_strings_allowed or self.null:
+ if not self.empty_strings_allowed or (self.null and settings.DATABASE_ENGINE != 'oracle'):
return None
return ""
@@ -806,6 +811,7 @@ class IPAddressField(Field):
validators.isValidIPAddress4(field_data, None)
class NullBooleanField(Field):
+ empty_strings_allowed = False
def __init__(self, *args, **kwargs):
kwargs['null'] = True
Field.__init__(self, *args, **kwargs)
@@ -875,10 +881,18 @@ class TimeField(Field):
Field.__init__(self, verbose_name, name, **kwargs)
def get_db_prep_lookup(self, lookup_type, value):
+ if settings.DATABASE_ENGINE == 'oracle':
+ # Oracle requires a date in order to parse.
+ def prep(value):
+ if isinstance(value, datetime.time):
+ value = datetime.datetime.combine(datetime.date(1900, 1, 1), value)
+ return str(value)
+ else:
+ prep = str
if lookup_type == 'range':
- value = [str(v) for v in value]
+ value = [prep(v) for v in value]
else:
- value = str(value)
+ value = prep(value)
return Field.get_db_prep_lookup(self, lookup_type, value)
def pre_save(self, model_instance, add):
@@ -896,7 +910,15 @@ class TimeField(Field):
# doesn't support microseconds.
if settings.DATABASE_ENGINE == 'mysql' and hasattr(value, 'microsecond'):
value = value.replace(microsecond=0)
- value = str(value)
+ if settings.DATABASE_ENGINE == 'oracle':
+ # cx_Oracle expects a datetime.datetime to persist into TIMESTAMP field.
+ if isinstance(value, datetime.time):
+ value = datetime.datetime(1900, 1, 1, value.hour, value.minute,
+ value.second, value.microsecond)
+ elif isinstance(value, basestring):
+ value = datetime.datetime(*(time.strptime(value, '%H:%M:%S')[:6]))
+ else:
+ value = str(value)
return Field.get_db_prep_save(self, value)
def get_manipulator_field_objs(self):
diff --git a/django/db/models/fields/related.py b/django/db/models/fields/related.py
index 42eec6b4f0..60503ce14f 100644
--- a/django/db/models/fields/related.py
+++ b/django/db/models/fields/related.py
@@ -10,9 +10,10 @@ from django import oldforms
from django import newforms as forms
from django.dispatch import dispatcher
-# For Python 2.3
-if not hasattr(__builtins__, 'set'):
- from sets import Set as set
+try:
+ set
+except NameError:
+ from sets import Set as set # Python 2.3 fallback
# Values for Relation.edit_inline.
TABULAR, STACKED = 1, 2
@@ -335,10 +336,7 @@ def create_many_related_manager(superclass):
(target_col_name, self.join_table, source_col_name,
target_col_name, ",".join(['%s'] * len(new_ids))),
[self._pk_val] + list(new_ids))
- if cursor.rowcount is not None and cursor.rowcount != 0:
- existing_ids = set([row[0] for row in cursor.fetchmany(cursor.rowcount)])
- else:
- existing_ids = set()
+ existing_ids = set([row[0] for row in cursor.fetchall()])
# Add the ones that aren't there already
for obj_id in (new_ids - existing_ids):
diff --git a/django/db/models/options.py b/django/db/models/options.py
index dd6c586ddd..93627f7b72 100644
--- a/django/db/models/options.py
+++ b/django/db/models/options.py
@@ -13,7 +13,7 @@ get_verbose_name = lambda class_name: re.sub('(((?<=[a-z])[A-Z])|([A-Z](?![A-Z]|
DEFAULT_NAMES = ('verbose_name', 'db_table', 'ordering',
'unique_together', 'permissions', 'get_latest_by',
- 'order_with_respect_to', 'app_label')
+ 'order_with_respect_to', 'app_label', 'db_tablespace')
class Options(object):
def __init__(self, meta):
@@ -27,6 +27,7 @@ class Options(object):
self.object_name, self.app_label = None, None
self.get_latest_by = None
self.order_with_respect_to = None
+ self.db_tablespace = None
self.admin = None
self.meta = meta
self.pk = None
@@ -59,6 +60,8 @@ class Options(object):
del self.meta
def _prepare(self, model):
+ from django.db import backend
+ from django.db.backends.util import truncate_name
if self.order_with_respect_to:
self.order_with_respect_to = self.get_field(self.order_with_respect_to)
self.ordering = ('_order',)
@@ -73,6 +76,8 @@ class Options(object):
# If the db_table wasn't provided, use the app_label + module_name.
if not self.db_table:
self.db_table = "%s_%s" % (self.app_label, self.module_name)
+ self.db_table = truncate_name(self.db_table,
+ backend.get_max_name_length())
def add_field(self, field):
# Insert the given field in the order in which it was created, using
@@ -88,10 +93,10 @@ class Options(object):
def __repr__(self):
return '<Options for %s>' % self.object_name
-
+
def __str__(self):
return "%s.%s" % (self.app_label, self.module_name)
-
+
def get_field(self, name, many_to_many=True):
"Returns the requested field by name. Raises FieldDoesNotExist on error."
to_search = many_to_many and (self.fields + self.many_to_many) or self.fields
diff --git a/django/db/models/query.py b/django/db/models/query.py
index a6e702be18..24d701b10d 100644
--- a/django/db/models/query.py
+++ b/django/db/models/query.py
@@ -4,12 +4,14 @@ from django.db.models import signals, loading
from django.dispatch import dispatcher
from django.utils.datastructures import SortedDict
from django.contrib.contenttypes import generic
+import datetime
import operator
import re
-# For Python 2.3
-if not hasattr(__builtins__, 'set'):
- from sets import Set as set
+try:
+ set
+except NameError:
+ from sets import Set as set # Python 2.3 fallback
# The string constant used to separate query parts
LOOKUP_SEPARATOR = '__'
@@ -77,7 +79,7 @@ def quote_only_if_word(word):
else:
return backend.quote_name(word)
-class QuerySet(object):
+class _QuerySet(object):
"Represents a lazy database lookup for a set of objects"
def __init__(self, model=None):
self.model = model
@@ -181,13 +183,18 @@ class QuerySet(object):
cursor = connection.cursor()
cursor.execute("SELECT " + (self._distinct and "DISTINCT " or "") + ",".join(select) + sql, params)
+
fill_cache = self._select_related
- index_end = len(self.model._meta.fields)
+ fields = self.model._meta.fields
+ index_end = len(fields)
+ has_resolve_columns = hasattr(self, 'resolve_columns')
while 1:
rows = cursor.fetchmany(GET_ITERATOR_CHUNK_SIZE)
if not rows:
raise StopIteration
for row in rows:
+ if has_resolve_columns:
+ row = self.resolve_columns(row, fields)
if fill_cache:
obj, index_end = get_cached_row(klass=self.model, row=row,
index_start=0, max_depth=self._max_related_depth)
@@ -551,6 +558,12 @@ class QuerySet(object):
return select, " ".join(sql), params
+# Use the backend's QuerySet class if it defines one, otherwise use _QuerySet.
+if hasattr(backend, 'get_query_set_class'):
+ QuerySet = backend.get_query_set_class(_QuerySet)
+else:
+ QuerySet = _QuerySet
+
class ValuesQuerySet(QuerySet):
def __init__(self, *args, **kwargs):
super(ValuesQuerySet, self).__init__(*args, **kwargs)
@@ -565,35 +578,38 @@ class ValuesQuerySet(QuerySet):
# self._fields is a list of field names to fetch.
if self._fields:
- #columns = [self.model._meta.get_field(f, many_to_many=False).column for f in self._fields]
if not self._select:
- columns = [self.model._meta.get_field(f, many_to_many=False).column for f in self._fields]
+ fields = [self.model._meta.get_field(f, many_to_many=False) for f in self._fields]
else:
- columns = []
+ fields = []
for f in self._fields:
if f in [field.name for field in self.model._meta.fields]:
- columns.append( self.model._meta.get_field(f, many_to_many=False).column )
+ fields.append(self.model._meta.get_field(f, many_to_many=False))
elif not self._select.has_key( f ):
raise FieldDoesNotExist, '%s has no field named %r' % ( self.model._meta.object_name, f )
field_names = self._fields
else: # Default to all fields.
- columns = [f.column for f in self.model._meta.fields]
- field_names = [f.attname for f in self.model._meta.fields]
+ fields = self.model._meta.fields
+ field_names = [f.attname for f in fields]
+ columns = [f.column for f in fields]
select = ['%s.%s' % (backend.quote_name(self.model._meta.db_table), backend.quote_name(c)) for c in columns]
-
# Add any additional SELECTs.
if self._select:
select.extend(['(%s) AS %s' % (quote_only_if_word(s[1]), backend.quote_name(s[0])) for s in self._select.items()])
cursor = connection.cursor()
cursor.execute("SELECT " + (self._distinct and "DISTINCT " or "") + ",".join(select) + sql, params)
+
+ has_resolve_columns = hasattr(self, 'resolve_columns')
while 1:
rows = cursor.fetchmany(GET_ITERATOR_CHUNK_SIZE)
if not rows:
raise StopIteration
for row in rows:
+ if has_resolve_columns:
+ row = self.resolve_columns(row, fields)
yield dict(zip(field_names, row))
def _clone(self, klass=None, **kwargs):
@@ -604,25 +620,49 @@ class ValuesQuerySet(QuerySet):
class DateQuerySet(QuerySet):
def iterator(self):
from django.db.backends.util import typecast_timestamp
+ from django.db.models.fields import DateTimeField
self._order_by = () # Clear this because it'll mess things up otherwise.
if self._field.null:
self._where.append('%s.%s IS NOT NULL' % \
(backend.quote_name(self.model._meta.db_table), backend.quote_name(self._field.column)))
-
try:
select, sql, params = self._get_sql_clause()
except EmptyResultSet:
raise StopIteration
- sql = 'SELECT %s %s GROUP BY 1 ORDER BY 1 %s' % \
+ table_name = backend.quote_name(self.model._meta.db_table)
+ field_name = backend.quote_name(self._field.column)
+
+ if backend.allows_group_by_ordinal:
+ group_by = '1'
+ else:
+ group_by = backend.get_date_trunc_sql(self._kind,
+ '%s.%s' % (table_name, field_name))
+
+ sql = 'SELECT %s %s GROUP BY %s ORDER BY 1 %s' % \
(backend.get_date_trunc_sql(self._kind, '%s.%s' % (backend.quote_name(self.model._meta.db_table),
- backend.quote_name(self._field.column))), sql, self._order)
+ backend.quote_name(self._field.column))), sql, group_by, self._order)
cursor = connection.cursor()
cursor.execute(sql, params)
- # We have to manually run typecast_timestamp(str()) on the results, because
- # MySQL doesn't automatically cast the result of date functions as datetime
- # objects -- MySQL returns the values as strings, instead.
- return [typecast_timestamp(str(row[0])) for row in cursor.fetchall()]
+
+ has_resolve_columns = hasattr(self, 'resolve_columns')
+ needs_datetime_string_cast = backend.needs_datetime_string_cast
+ dates = []
+ # It would be better to use self._field here instead of DateTimeField(),
+ # but in Oracle that will result in a list of datetime.date instead of
+ # datetime.datetime.
+ fields = [DateTimeField()]
+ while 1:
+ rows = cursor.fetchmany(GET_ITERATOR_CHUNK_SIZE)
+ if not rows:
+ return dates
+ for row in rows:
+ date = row[0]
+ if has_resolve_columns:
+ date = self.resolve_columns([date], fields)[0]
+ elif needs_datetime_string_cast:
+ date = typecast_timestamp(str(date))
+ dates.append(date)
def _clone(self, klass=None, **kwargs):
c = super(DateQuerySet, self)._clone(klass, **kwargs)
@@ -730,8 +770,17 @@ def get_where_clause(lookup_type, table_prefix, field_name, value):
if table_prefix.endswith('.'):
table_prefix = backend.quote_name(table_prefix[:-1])+'.'
field_name = backend.quote_name(field_name)
+ if type(value) == datetime.datetime and backend.get_datetime_cast_sql():
+ cast_sql = backend.get_datetime_cast_sql()
+ else:
+ cast_sql = '%s'
+ if lookup_type in ('iexact', 'icontains', 'istartswith', 'iendswith') and backend.needs_upper_for_iops:
+ format = 'UPPER(%s%s) %s'
+ else:
+ format = '%s%s %s'
try:
- return '%s%s %s' % (table_prefix, field_name, (backend.OPERATOR_MAPPING[lookup_type] % '%s'))
+ return format % (table_prefix, field_name,
+ backend.OPERATOR_MAPPING[lookup_type] % cast_sql)
except KeyError:
pass
if lookup_type == 'in':
generated by cgit v1.3 (git 2.53.0) at 2026-07-12 19:30:19 +0000