--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/core/management/commands/loaddata.py Wed Jun 02 18:57:35 2010 +0200
@@ -0,0 +1,230 @@
+import sys
+import os
+import gzip
+import zipfile
+from optparse import make_option
+
+from django.conf import settings
+from django.core import serializers
+from django.core.management.base import BaseCommand
+from django.core.management.color import no_style
+from django.db import connections, router, transaction, DEFAULT_DB_ALIAS
+from django.db.models import get_apps
+from django.utils.itercompat import product
+
+try:
+ import bz2
+ has_bz2 = True
+except ImportError:
+ has_bz2 = False
+
+class Command(BaseCommand):
+ help = 'Installs the named fixture(s) in the database.'
+ args = "fixture [fixture ...]"
+
+ option_list = BaseCommand.option_list + (
+ make_option('--database', action='store', dest='database',
+ default=DEFAULT_DB_ALIAS, help='Nominates a specific database to load '
+ 'fixtures into. Defaults to the "default" database.'),
+ )
+
+ def handle(self, *fixture_labels, **options):
+ using = options.get('database', DEFAULT_DB_ALIAS)
+
+ connection = connections[using]
+ self.style = no_style()
+
+ verbosity = int(options.get('verbosity', 1))
+ show_traceback = options.get('traceback', False)
+
+ # commit is a stealth option - it isn't really useful as
+ # a command line option, but it can be useful when invoking
+ # loaddata from within another script.
+ # If commit=True, loaddata will use its own transaction;
+ # if commit=False, the data load SQL will become part of
+ # the transaction in place when loaddata was invoked.
+ commit = options.get('commit', True)
+
+ # Keep a count of the installed objects and fixtures
+ fixture_count = 0
+ object_count = 0
+ models = set()
+
+ humanize = lambda dirname: dirname and "'%s'" % dirname or 'absolute path'
+
+ # Get a cursor (even though we don't need one yet). This has
+ # the side effect of initializing the test database (if
+ # it isn't already initialized).
+ cursor = connection.cursor()
+
+ # Start transaction management. All fixtures are installed in a
+ # single transaction to ensure that all references are resolved.
+ if commit:
+ transaction.commit_unless_managed(using=using)
+ transaction.enter_transaction_management(using=using)
+ transaction.managed(True, using=using)
+
+ class SingleZipReader(zipfile.ZipFile):
+ def __init__(self, *args, **kwargs):
+ zipfile.ZipFile.__init__(self, *args, **kwargs)
+ if settings.DEBUG:
+ assert len(self.namelist()) == 1, "Zip-compressed fixtures must contain only one file."
+ def read(self):
+ return zipfile.ZipFile.read(self, self.namelist()[0])
+
+ compression_types = {
+ None: file,
+ 'gz': gzip.GzipFile,
+ 'zip': SingleZipReader
+ }
+ if has_bz2:
+ compression_types['bz2'] = bz2.BZ2File
+
+ app_module_paths = []
+ for app in get_apps():
+ if hasattr(app, '__path__'):
+ # It's a 'models/' subpackage
+ for path in app.__path__:
+ app_module_paths.append(path)
+ else:
+ # It's a models.py module
+ app_module_paths.append(app.__file__)
+
+ app_fixtures = [os.path.join(os.path.dirname(path), 'fixtures') for path in app_module_paths]
+ for fixture_label in fixture_labels:
+ parts = fixture_label.split('.')
+
+ if len(parts) > 1 and parts[-1] in compression_types:
+ compression_formats = [parts[-1]]
+ parts = parts[:-1]
+ else:
+ compression_formats = compression_types.keys()
+
+ if len(parts) == 1:
+ fixture_name = parts[0]
+ formats = serializers.get_public_serializer_formats()
+ else:
+ fixture_name, format = '.'.join(parts[:-1]), parts[-1]
+ if format in serializers.get_public_serializer_formats():
+ formats = [format]
+ else:
+ formats = []
+
+ if formats:
+ if verbosity > 1:
+ print "Loading '%s' fixtures..." % fixture_name
+ else:
+ sys.stderr.write(
+ self.style.ERROR("Problem installing fixture '%s': %s is not a known serialization format." %
+ (fixture_name, format)))
+ transaction.rollback(using=using)
+ transaction.leave_transaction_management(using=using)
+ return
+
+ if os.path.isabs(fixture_name):
+ fixture_dirs = [fixture_name]
+ else:
+ fixture_dirs = app_fixtures + list(settings.FIXTURE_DIRS) + ['']
+
+ for fixture_dir in fixture_dirs:
+ if verbosity > 1:
+ print "Checking %s for fixtures..." % humanize(fixture_dir)
+
+ label_found = False
+ for combo in product([using, None], formats, compression_formats):
+ database, format, compression_format = combo
+ file_name = '.'.join(
+ p for p in [
+ fixture_name, database, format, compression_format
+ ]
+ if p
+ )
+
+ if verbosity > 1:
+ print "Trying %s for %s fixture '%s'..." % \
+ (humanize(fixture_dir), file_name, fixture_name)
+ full_path = os.path.join(fixture_dir, file_name)
+ open_method = compression_types[compression_format]
+ try:
+ fixture = open_method(full_path, 'r')
+ if label_found:
+ fixture.close()
+ print self.style.ERROR("Multiple fixtures named '%s' in %s. Aborting." %
+ (fixture_name, humanize(fixture_dir)))
+ transaction.rollback(using=using)
+ transaction.leave_transaction_management(using=using)
+ return
+ else:
+ fixture_count += 1
+ objects_in_fixture = 0
+ if verbosity > 0:
+ print "Installing %s fixture '%s' from %s." % \
+ (format, fixture_name, humanize(fixture_dir))
+ try:
+ objects = serializers.deserialize(format, fixture, using=using)
+ for obj in objects:
+ if router.allow_syncdb(using, obj.object.__class__):
+ objects_in_fixture += 1
+ models.add(obj.object.__class__)
+ obj.save(using=using)
+ object_count += objects_in_fixture
+ label_found = True
+ except (SystemExit, KeyboardInterrupt):
+ raise
+ except Exception:
+ import traceback
+ fixture.close()
+ transaction.rollback(using=using)
+ transaction.leave_transaction_management(using=using)
+ if show_traceback:
+ traceback.print_exc()
+ else:
+ sys.stderr.write(
+ self.style.ERROR("Problem installing fixture '%s': %s\n" %
+ (full_path, ''.join(traceback.format_exception(sys.exc_type,
+ sys.exc_value, sys.exc_traceback)))))
+ return
+ fixture.close()
+
+ # If the fixture we loaded contains 0 objects, assume that an
+ # error was encountered during fixture loading.
+ if objects_in_fixture == 0:
+ sys.stderr.write(
+ self.style.ERROR("No fixture data found for '%s'. (File format may be invalid.)" %
+ (fixture_name)))
+ transaction.rollback(using=using)
+ transaction.leave_transaction_management(using=using)
+ return
+
+ except Exception, e:
+ if verbosity > 1:
+ print "No %s fixture '%s' in %s." % \
+ (format, fixture_name, humanize(fixture_dir))
+
+ # If we found even one object in a fixture, we need to reset the
+ # database sequences.
+ if object_count > 0:
+ sequence_sql = connection.ops.sequence_reset_sql(self.style, models)
+ if sequence_sql:
+ if verbosity > 1:
+ print "Resetting sequences"
+ for line in sequence_sql:
+ cursor.execute(line)
+
+ if commit:
+ transaction.commit(using=using)
+ transaction.leave_transaction_management(using=using)
+
+ if object_count == 0:
+ if verbosity > 0:
+ print "No fixtures found."
+ else:
+ if verbosity > 0:
+ print "Installed %d object(s) from %d fixture(s)" % (object_count, fixture_count)
+
+ # Close the DB connection. This is required as a workaround for an
+ # edge case in MySQL: if the same connection is used to
+ # create tables, load data, and query, the query can return
+ # incorrect results. See Django #7572, MySQL #37735.
+ if commit:
+ connection.close()