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Changed other models to avoid unnecessary date/time parsing.

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Added PRAGMA statements for comments table and changed flow so the siteId_postId index is now created after data has been inserted.
This commit is contained in:
Samuel Lai 2013-11-29 00:18:54 +11:00
parent cdb8d96508
commit bf09e36928
2 changed files with 19 additions and 9 deletions
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18
python/src/stackdump/commands/import_site.py
View File

@ -110,7 +110,7 @@ class BadgeContentHandler(BaseContentHandler):
d['sourceId'] = int(attrs['Id'])
d['userId'] = int(attrs.get('UserId', 0))
d['name'] = attrs.get('Name', '')
d['date'] = datetime.strptime(attrs.get('Date'), ISO_DATE_FORMAT)
d['date'] = attrs.get('Date')
except Exception, e:
# could not parse this, so ignore the row completely
self.cur_props = None
@ -256,10 +256,10 @@ class UserContentHandler(BaseContentHandler):
d = self.cur_props = { 'site' : self.site }
d['sourceId'] = int(attrs['Id'])
d['reputation'] = int(attrs.get('Reputation', 0))
d['creationDate'] = datetime.strptime(attrs.get('CreationDate'), ISO_DATE_FORMAT)
d['creationDate'] = attrs.get('CreationDate')
d['displayName'] = attrs.get('DisplayName', '')
d['emailHash'] = attrs.get('EmailHash', '')
d['lastAccessDate'] = datetime.strptime(attrs.get('LastAccessDate'), ISO_DATE_FORMAT)
d['lastAccessDate'] = attrs.get('LastAccessDate')
d['websiteUrl'] = attrs.get('WebsiteUrl', '')
d['location'] = attrs.get('Location', '')
d['age'] = int(attrs.get('Age', 0))
@ -639,8 +639,6 @@ class Comment(SQLObject):
creationDate = DateTimeCol(datetimeFormat=ISO_DATE_FORMAT)
userId = IntCol()
siteId_postId_index = DatabaseIndex(siteId, postId)
_connection = comment_db_sqlhub
json_fields = [ 'id', 'score', 'text', 'creationDate', 'userId' ]
@ -678,6 +676,9 @@ def get_file_path(dir_path, filename):
return os.path.abspath(os.path.join(dir_path, matches[0]))
def create_comment_indices(conn):
# (site_id, post_id) index
conn.execute('CREATE INDEX IF NOT EXISTS comment_siteId_postId_index ON comment (site_id, post_id)')
def import_site(xml_root, site_name, dump_date, site_desc, site_key,
site_base_url, answer_yes=False):
@ -858,7 +859,10 @@ def import_site(xml_root, site_name, dump_date, site_desc, site_key,
comment_db_sqlhub.processConnection = connectionForURI(conn_str)
print('Connected.')
Comment.createTable()
print('Schema created.\n')
print('Schema created.')
comment_db_sqlhub.processConnection.getConnection().execute('PRAGMA synchronous = OFF')
comment_db_sqlhub.processConnection.getConnection().execute('PRAGMA journal_mode = MEMORY')
print('Pragma configured.\n')
timing_start = time.time()
@ -891,6 +895,8 @@ def import_site(xml_root, site_name, dump_date, site_desc, site_key,
xml.sax.parse(xml_path, handler)
handler.commit_comments_batch()
print('%-10s Processed %d rows.' % ('[comment]', handler.row_count))
print('[comment] creating database indices...')
create_comment_indices(comment_db_sqlhub.processConnection.getConnection())
print('[comment] FINISHED PARSING COMMENTS.\n')
# USERS

10
python/src/stackdump/models.py
View File

@ -5,6 +5,10 @@
from sqlobject import SQLObject, UnicodeCol, DateTimeCol, IntCol, ForeignKey, \
DatabaseIndex
ISO_DATE_FORMAT = '%Y-%m-%dT%H:%M:%S.%f'
class Site(SQLObject):
name = UnicodeCol()
desc = UnicodeCol()
@ -21,17 +25,17 @@ class Badge(SQLObject):
site = ForeignKey('Site', cascade=True)
userId = IntCol()
name = UnicodeCol()
date = DateTimeCol()
date = DateTimeCol(datetimeFormat=ISO_DATE_FORMAT)
class User(SQLObject):
sourceId = IntCol()
site = ForeignKey('Site', cascade=True)
reputation = IntCol()
creationDate = DateTimeCol()
creationDate = DateTimeCol(datetimeFormat=ISO_DATE_FORMAT)
displayName = UnicodeCol()
emailHash = UnicodeCol()
lastAccessDate = DateTimeCol()
lastAccessDate = DateTimeCol(datetimeFormat=ISO_DATE_FORMAT)
websiteUrl = UnicodeCol()
location = UnicodeCol()
age = IntCol()