'How to remove attribute from item in DynamoDB table?

I have an item whose particular attribute I want to remove using SDK 2.x from DynamoDB. How do I do this? I am using enhanced DynamoDB for table management. Here's a code sample:

DynamoDbTable<T> mappedTable = AwsConfig.getTableSchema(schema, clazz);
T updatedRecord = mappedTable.updateItem(request -> {
                request.ignoreNulls(true);
                request.item(record);
});

I would appreciate a solution using enhanced DynamoDB client.

javaaws-sdk-java-2.0aws-sdk-java


Solution 1:[1]

Not sure what you mean by remove attribute, if you refer to not have an attribute persisted in dynamoDB you can use @DynamoDbIgnore

@DynamoDbBean
public class SomeDynamoDBEntity {

    @DynamoDbIgnore
    public String getType() {
        return this.type;
    }
}

Solution 2:[2]

Set the variable value to null in your record class object. And do not set ignoreNulls to true. EnhancedClient will remove that respective attribute from the item with UpdateItemEnhancedRequest.

Ref: read ignoreNulls in documentation here

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 mikethe
Solution 2 Gaurav

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