Adding some enhancements.
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parent
013d1c0bd5
commit
a8b07eb115
4 changed files with 24 additions and 9 deletions
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@ -1,5 +1,6 @@
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from typing import Type, TypeVar, Generic, Optional
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from sqlalchemy.orm import Load, Session, raiseload, with_polymorphic
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from sqlalchemy.orm.attributes import InstrumentedAttribute
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from sqlalchemy import inspect, text
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from crudkit.core.base import Version
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from crudkit.core.spec import CRUDSpec
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@ -55,6 +56,7 @@ class CRUDService(Generic[T]):
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query, root_alias = self.get_query()
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root_fields = []
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root_field_names = {}
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rel_field_names = {}
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if params:
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@ -77,10 +79,11 @@ class CRUDService(Generic[T]):
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)
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if params:
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root_fields, rel_field_names = spec.parse_fields()
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root_fields, rel_field_names, root_field_names = spec.parse_fields()
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if root_fields:
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query = query.options(Load(root_alias).load_only(*root_fields))
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only_cols = [c for c in root_fields if isinstance(c, InstrumentedAttribute)]
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if only_cols:
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query = query.options(Load(root_alias).load_only(*only_cols))
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for eager in spec.get_eager_loads(root_alias, fields_map=rel_field_names):
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query = query.options(eager)
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@ -105,6 +108,8 @@ class CRUDService(Generic[T]):
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rows = query.all()
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proj = []
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if root_field_names:
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proj.extend(root_field_names)
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if root_fields:
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proj.extend(c.key for c in root_fields)
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for path, names in (rel_field_names or {}).items():
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@ -121,7 +121,7 @@ class CRUDSpec:
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"""
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raw = self.params.get('fields')
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if not raw:
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return [], {}
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return [], {}, {}
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if isinstance(raw, list):
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tokens = []
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@ -131,6 +131,7 @@ class CRUDSpec:
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tokens = [p.strip() for p in str(raw).split(',') if p.strip()]
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root_fields: List[InstrumentedAttribute] = []
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root_field_names: list[str] = []
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rel_field_names: Dict[Tuple[str, ...], List[str]] = {}
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for token in tokens:
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@ -142,6 +143,7 @@ class CRUDSpec:
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self.eager_paths.add(join_path)
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else:
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root_fields.append(col)
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root_field_names.append(getattr(col, "key", token))
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seen = set()
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root_fields = [c for c in root_fields if not (c.key in seen or seen.add(c.key))]
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@ -151,7 +153,7 @@ class CRUDSpec:
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self._root_fields = root_fields
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self._rel_field_names = rel_field_names
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return root_fields, rel_field_names
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return root_fields, rel_field_names, root_field_names
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def get_eager_loads(self, root_alias, *, fields_map=None):
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loads = []
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