ExpectedAttributeValue class
Allows you to provide an attribute name, and whether or not Amazon DynamoDB should check to see if the attribute value already exists; or if the attribute value exists and has a particular value before changing it.
Constructors
- ExpectedAttributeValue({bool? exists, AttributeValue? value})
Properties
- exists → bool?
-
Specify whether or not a value already exists for the attribute name-value
pair.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- value → AttributeValue?
-
Specify whether or not a value already exists and has a specific content for
the attribute name-value pair.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toJson(
) → Map< String, dynamic> -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited