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'''Merge all the OldProjectRole collections in into a ProjectRole collection.
'''
import logging

from ming.orm import session, state
from allura import model as M

log = logging.getLogger(__name__)

log.info('Moving project roles in database %s to main DB',
         M.Project.database_uri())
for opr in M.OldProjectRole.query.find():
    pr = M.ProjectRole(**state(opr).document)
session(opr).clear()
session(pr).flush()
session(pr).clear()