Conditional Update to dynamodb using native camel component Java

[sagarcasual]

versions used Java 13, Apache Camel 3.11.2, AWS SDK 2.17.40.

Seeking help to perform conditional update to dynamodb using Apache Camel
integration lib.

Table Definition=================
PKCOL String, primary-key
COL1  String
COL2  String

I would like to issue following SQL Equivalent statement using native
Apache Camel Dynamodb component

UPDATE tableName  SET PKCOL = :PKCOLValue, COL1 = :COL1Value, COL2 =
:COL2Value //Update expression
WHERE //Conditional Expression below
(PKCOL = :PKCOLValue AND COL2 < :thresholdValue)
OR
(attribute_not_exists(PKCOL) OR attribute_not_exists(COL1) OR
attribute_not_exists(COL2))

However I am not able to see a direct mapping for update expression, place
where I can stick in ORs and ANDs clauses

I am able to use combination of aws sdk2 for dynamodb and bean route to get
it done as seen below,

final UpdateItemRequest request = UpdateItemRequest.builder ()
                                 .tableName (tableName)
                                 .key (itemKey) //PKCOL key, value map
                                 .updateExpression (updateExpression)
//SET expression clause in query above
                                 .conditionExpression
(conditionExpression) //Muli conditional statement after where clause
in query above
                                 .expressionAttributeValues
(expressionAttributeValues) //Value map for all columns
                                 .returnValues (ReturnValue.UPDATED_NEW)
                                 .build ();

exchange.getIn ().setBody (request, UpdateItemRequest.class);

bean (DynamoDbClient.class, "updateItem(${body})")

But I am interested in native camel way, hence seeking help.