Error: dynamodb could not instantiate class
Answered by Rafal Wilinski
What's Causing This Error
This is an error that occurs when using DynamoDB in Java. For instance, you may run into this error:
- If you define a table class (class with the annotation
@DynamoDBTable(tableName=""))as a subclass of another class. - If it is defined within the same file as another class.
- If you have not defined getters/setters or a no-arg constructor.
Solution: Here's How To Resolve It
To solve this error:
- Ensure that you define your Java DynamoDB table classes in their separate file.
- Ensure that your class has a no-arg constructor.
Other Common DynamoDB Errors (with Solutions)
- dynamodb query is not null
- ProvisionedThroughputExceededException DynamoDB
- ValidationException: Invalid KeyConditionExpression: Attribute name is a reserved keyword;
- dynamodb unable to find storage information for property
- dynamodb: one or more parameter values were invalid: type mismatch for index key
- dynamodb value cannot be null. (parameter 'type')
- aws.dynamodb.documentclient is not a constructor
- a socket operation was attempted to an unreachable network dynamodb
- dynamodb cannot convert undefined or null to object
- Unable to start DynamoDB Local process
- dynamodb could not be mapped for type string
- dynamodb connection timeout
- DynamoDB FilterExpression Not Working
- DynamoDB scan does not return all items
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