from sqlalchemy.orm import validates
from sqlalchemy.ext.declarative import declarative_base
+from sfa.storage.record import Record
from sfa.util.sfalogging import logger
+from sfa.util.sfatime import utcparse, datetime_to_string
from sfa.util.xml import XML
from sfa.trust.gid import GID
# (*) finally for converting a dictionary into an sqlalchemy object, we provide
# obj.load_from_dict(dict)
-class AlchemyObj:
+class AlchemyObj(Record):
def __iter__(self):
self._i = iter(object_mapper(self).columns)
return self
def next(self):
n = self._i.next().name
return n, getattr(self, n)
- def todict (self):
- d=self.__dict__
- keys=[k for k in d.keys() if not k.startswith('_')]
- return dict ( [ (k,d[k]) for k in keys ] )
- def load_from_dict (self, d):
- for (k,v) in d.iteritems():
- # experimental
- if isinstance(v, StringTypes) and v.lower() in ['true']: v=True
- if isinstance(v, StringTypes) and v.lower() in ['false']: v=False
- setattr(self,k,v)
-
- # in addition we provide convenience for converting to and from xml records
- # for this purpose only, we need the subclasses to define 'fields' as either
- # a list or a dictionary
- def xml_fields (self):
- fields=self.fields
- if isinstance(fields,dict): fields=fields.keys()
- return fields
-
- def save_as_xml (self):
- # xxx not sure about the scope here
- input_dict = dict( [ (key, getattr(self.key), ) for key in self.xml_fields() if getattr(self,key,None) ] )
- xml_record=XML("<record />")
- xml_record.parse_dict (input_dict)
- return xml_record.toxml()
-
- def dump(self, dump_parents=False):
- for key in self.fields:
- if key == 'gid' and self.gid:
- gid = GID(string=self.gid)
- print " %s:" % key
- gid.dump(8, dump_parents)
- elif getattr(self,key,None):
- print " %s: %s" % (key, getattr(self,key))
-
+
# # only intended for debugging
# def inspect (self, logger, message=""):
# logger.info("%s -- Inspecting AlchemyObj -- attrs"%message)
result += ">"
return result
+ # shortcut - former implem. was record-based
+ def get (self, field, default):
+ return getattr(self,field,default)
+
@validates ('gid')
def validate_gid (self, key, gid):
if gid is None: return
elif isinstance(gid, StringTypes): return gid
else: return gid.save_to_string(save_parents=True)
+ def validate_datetime (self, key, incoming):
+ if isinstance (incoming, datetime): return incoming
+ elif isinstance (incoming, (int,float)):return datetime.fromtimestamp (incoming)
+
+ @validates ('date_created')
+ def validate_date_created (self, key, incoming): return self.validate_datetime (key, incoming)
+
+ @validates ('last_updated')
+ def validate_last_updated (self, key, incoming): return self.validate_datetime (key, incoming)
+
# xxx - there might be smarter ways to handle get/set'ing gid using validation hooks
def get_gid_object (self):
if not self.gid: return None
now=datetime.now()
self.last_updated=now
+#################### cross-relations tables
+# authority x user (pis) association
+authority_pi_table = \
+ Table ( 'authority_pi', Base.metadata,
+ Column ('authority_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
+ Column ('pi_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
+ )
+# slice x user (researchers) association
+slice_researcher_table = \
+ Table ( 'slice_researcher', Base.metadata,
+ Column ('slice_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
+ Column ('researcher_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
+ )
+
##############################
# all subclasses define a convenience constructor with a default value for type,
# and when applicable a way to define local fields in a kwd=value argument
__tablename__ = 'authorities'
__mapper_args__ = { 'polymorphic_identity' : 'authority' }
record_id = Column (Integer, ForeignKey ("records.record_id"), primary_key=True)
+ #### extensions come here
+ reg_pis = relationship \
+ ('RegUser',
+ secondary=authority_pi_table,
+ primaryjoin=RegRecord.record_id==authority_pi_table.c.authority_id,
+ secondaryjoin=RegRecord.record_id==authority_pi_table.c.pi_id,
+ backref='reg_authorities_as_pi')
def __init__ (self, **kwds):
# fill in type if not previously set
def __repr__ (self):
return RegRecord.__repr__(self).replace("Record","Authority")
-####################
-# slice x user (researchers) association
-slice_researcher_table = \
- Table ( 'slice_researcher', Base.metadata,
- Column ('slice_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
- Column ('researcher_id', Integer, ForeignKey ('records.record_id'), primary_key=True),
- )
-
####################
class RegSlice (RegRecord):
__tablename__ = 'slices'
secondary=slice_researcher_table,
primaryjoin=RegRecord.record_id==slice_researcher_table.c.slice_id,
secondaryjoin=RegRecord.record_id==slice_researcher_table.c.researcher_id,
- backref="reg_slices_as_researcher")
+ backref='reg_slices_as_researcher')
def __init__ (self, **kwds):
if 'type' not in kwds: kwds['type']='slice'
git://git.onelab.eu / sfa.git / blobdiff