Update class

Represents a request to perform an UpdateItem operation.

Constructors

Update({required Map<String, AttributeValue> key, required String tableName, required String updateExpression, String? conditionExpression, Map<String, String>? expressionAttributeNames, Map<String, AttributeValue>? expressionAttributeValues, ReturnValuesOnConditionCheckFailure? returnValuesOnConditionCheckFailure})

Properties

conditionExpression → String?
A condition that must be satisfied in order for a conditional update to succeed.
final
expressionAttributeNames → Map<String, String>?
One or more substitution tokens for attribute names in an expression.
final
expressionAttributeValues → Map<String, AttributeValue>?
One or more values that can be substituted in an expression.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Map<String, AttributeValue>
The primary key of the item to be updated. Each element consists of an attribute name and a value for that attribute.
final
returnValuesOnConditionCheckFailure → ReturnValuesOnConditionCheckFailure?
Use ReturnValuesOnConditionCheckFailure to get the item attributes if the Update condition fails. For ReturnValuesOnConditionCheckFailure, the valid values are: NONE, ALL_OLD, UPDATED_OLD, ALL_NEW, UPDATED_NEW.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tableName → String
Name of the table for the UpdateItem request.
final
updateExpression → String
An expression that defines one or more attributes to be updated, the action to be performed on them, and new value(s) for them.
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