NAME

Paws::DynamoDB::ConditionCheck

USAGE

This class represents one of two things:

Arguments in a call to a service

Use the attributes of this class as arguments to methods. You shouldn't make instances of this class. Each attribute should be used as a named argument in the calls that expect this type of object.

As an example, if Att1 is expected to be a Paws::DynamoDB::ConditionCheck object:

  $service_obj->Method(Att1 => { ConditionExpression => $value, ..., TableName => $value  });

Results returned from an API call

Use accessors for each attribute. If Att1 is expected to be an Paws::DynamoDB::ConditionCheck object:

  $result = $service_obj->Method(...);
  $result->Att1->ConditionExpression

DESCRIPTION

Represents a request to perform a check that an item exists or to check the condition of specific attributes of the item.

ATTRIBUTES

REQUIRED ConditionExpression => Str

A condition that must be satisfied in order for a conditional update to succeed.

ExpressionAttributeNames => Paws::DynamoDB::ExpressionAttributeNameMap

One or more substitution tokens for attribute names in an expression.

ExpressionAttributeValues => Paws::DynamoDB::ExpressionAttributeValueMap

One or more values that can be substituted in an expression.

REQUIRED Key => Paws::DynamoDB::Key

The primary key of the item to be checked. Each element consists of an attribute name and a value for that attribute.

ReturnValuesOnConditionCheckFailure => Str

Use "ReturnValuesOnConditionCheckFailure" to get the item attributes if the "ConditionCheck" condition fails. For "ReturnValuesOnConditionCheckFailure", the valid values are: NONE and ALL_OLD.

REQUIRED TableName => Str

Name of the table for the check item request.

BUGS and CONTRIBUTIONS

The source code is located here: <https://github.com/pplu/aws-sdk-perl>

Please report bugs to: <https://github.com/pplu/aws-sdk-perl/issues>