Precondition extension type
An options object that configures conditional behavior of update() and
delete() calls in DocumentReference, WriteBatch, and Transaction.
Using Preconditions, these calls can be restricted to only apply to
documents that match the specified restrictions.
- on
- Implemented types
- Available extensions
Properties
- exists → bool?
-
If set, enforces that the target document must or must not exist.
no setter
- hashCode → int
-
The hash code for this object.
no setterinherited
- lastUpdateTime → Timestamp?
-
If set, the last update time to enforce.
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited