|
| 1 | +from sqlalchemy import literal_column |
| 2 | + |
| 3 | +from mlcomp.db.core import PaginatorOptions |
| 4 | +from mlcomp.db.models import Space |
| 5 | +from mlcomp.db.models.space import SpaceRelation |
| 6 | +from mlcomp.db.providers.base import BaseDataProvider |
| 7 | + |
| 8 | + |
| 9 | +class SpaceProvider(BaseDataProvider): |
| 10 | + model = Space |
| 11 | + |
| 12 | + def get(self, filter: dict, options: PaginatorOptions = None): |
| 13 | + query = self.query(Space, literal_column('0').label('relation')) |
| 14 | + if 'parent' in filter: |
| 15 | + query = query.filter(Space.name != filter['parent']) |
| 16 | + |
| 17 | + if filter.get('name'): |
| 18 | + query = query.filter(Space.name.contains(filter['name'])) |
| 19 | + if filter.get('parent'): |
| 20 | + relation = literal_column('1').label('relation') |
| 21 | + query2 = self.query(Space, relation). \ |
| 22 | + join(SpaceRelation, SpaceRelation.child == Space.name).filter( |
| 23 | + SpaceRelation.parent == filter['parent'] |
| 24 | + ) |
| 25 | + query2_names = [space.name for space, _ in query2.all()] |
| 26 | + query = query.filter(Space.name.notin_(query2_names)) |
| 27 | + query = query.union_all(query2) |
| 28 | + query = query.order_by(relation.desc()) |
| 29 | + |
| 30 | + total = query.count() |
| 31 | + paginator = self.paginator(query, options) if options else query |
| 32 | + data = [] |
| 33 | + for space, relation in paginator.all(): |
| 34 | + item = self.to_dict(space) |
| 35 | + item['relation'] = relation |
| 36 | + data.append(item) |
| 37 | + |
| 38 | + return { |
| 39 | + 'total': total, |
| 40 | + 'data': data |
| 41 | + } |
| 42 | + |
| 43 | + def add_relation(self, parent: str, child: str): |
| 44 | + self.add(SpaceRelation(parent=parent, child=child)) |
| 45 | + |
| 46 | + def remove_relation(self, parent: str, child: str): |
| 47 | + self.query(SpaceRelation).filter( |
| 48 | + SpaceRelation.parent == parent).filter( |
| 49 | + SpaceRelation.child == child).delete(synchronize_session=False) |
| 50 | + |
| 51 | + self.session.commit() |
| 52 | + |
| 53 | + def related(self, parent: str): |
| 54 | + res = self.query(Space).join(SpaceRelation, |
| 55 | + SpaceRelation.child == Space.name) \ |
| 56 | + .filter(SpaceRelation.parent == parent) \ |
| 57 | + .all() |
| 58 | + return res |
| 59 | + |
| 60 | + |
| 61 | +__all__ = ['SpaceProvider'] |
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