def constructQuery(self):
'''Return parts of query to retrieve stream items. Can be overriden in
child class.'''
table = self.tableName
fields = [ft.selectExpr(table, fn) for fn, ft in self.fields.main]
condition = self.condition
group = self.group
if hasattr(self, 'joinTemplate'):
table = qUtils.interpolateString(self.joinTemplate, {'brick': self})
condition = self.dbConn.join([condition,
getattr(self, 'joinCondition', '')])
if self.joinFields:
fields += ["%s.%s" % (self.joinTable, f) \
for f in self.joinFields.keys()]
order = self.order and ', '.join(
['%s %s' % (name, dr) for name, dr in self.order]) or ''
return table, fields, condition, self.group, order
def getSource(self):
"""Returns a xml source (file object, file name, or anything
compatible with parser, returned by xml.sax.make_parser()"""
return qUtils.interpolateString(self.filename, {'site': self.site})
