class Amazonite::DynamoDB::ConditionCheck

• Amazonite::DynamoDB::ConditionCheck
• Reference
• Object

Overview

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

Included Modules

• JSON::Serializable

Defined in:

dynamodb/condition_check.cr

Constructors

• .new(key : Hash(String, AttributeValue), table_name : String, condition_expression : String, expression_attribute_names : Hash(String, String) | Nil = nil, expression_attribute_values : Hash(String, AttributeValue) | Nil = nil, return_values_on_condition_check_failure : ReturnValuesOnConditionCheckFailure | Nil = nil)
• .new(pull : JSON::PullParser)

Instance Method Summary

• #==(other : self)

  Returns true if this reference is the same as other.

• #condition_expression : String

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

• #condition_expression=(condition_expression : String)

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

• #expression_attribute_names : Hash(String, String) | Nil

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

• #expression_attribute_names=(expression_attribute_names : Hash(String, String) | Nil)

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

• #expression_attribute_values : Hash(String, AttributeValue) | Nil

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

• #expression_attribute_values=(expression_attribute_values : Hash(String, AttributeValue) | Nil)

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

• #hash(hasher)

  See Object#hash(hasher)

• #key : Hash(String, AttributeValue)

  The primary key of the item to be checked.

• #key=(key : Hash(String, AttributeValue))

  The primary key of the item to be checked.

• #return_values_on_condition_check_failure : ReturnValuesOnConditionCheckFailure | Nil

  Use ReturnValuesOnConditionCheckFailure to get the item attributes if the ConditionCheck condition fails.

• #return_values_on_condition_check_failure=(return_values_on_condition_check_failure : ReturnValuesOnConditionCheckFailure | Nil)

  Use ReturnValuesOnConditionCheckFailure to get the item attributes if the ConditionCheck condition fails.

• #table_name : String

  Name of the table for the check item request.

• #table_name=(table_name : String)

  Name of the table for the check item request.

• #validate! : Nil

Constructor Detail

Instance Method Detail