that was a bug, fixed in 5802.
On Feb 17, 2009, at 5:48 AM, Joril wrote:
> from sqlalchemy import Column, Integer, String, ForeignKey
> from sqlalchemy.ext import serializer
> from sqlalchemy.orm import relation
> from sqlalchemy.ext.declarative import declarative_base
>
> # Tables definition
> Base = declarative_base()
>
> class Child(Base):
> __tablename__ = 'child'
> id = Column(Integer, primary_key=True)
> parent_id = Column(Integer, ForeignKey("parent.id"))
> data = Column(String)
>
> class Parent(Base):
> __tablename__ = 'parent'
> id = Column(Integer, primary_key=True)
> children = relation(Child)
>
> # Build "any" restriction
> r = Parent.children.any(Child.data=="x")
>
> # Serialize and deserialize it
> ser = serializer.dumps(r)
> serializer.loads(ser, Base.metadata)
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