Query and Scan Operations in DynamoDB - DynamoDB Applied Design Patterns - page 112

keyCndtns.put("BookTitle", hashKeyCondition);
keyCndtns.put("PubDate", rangeKeyCondition);
//Creates a QueryFilter condition equivalent to Edition = 1
Map<String,Condition> queryFilter = new
HashMap<String,Condition>();
queryFilter.put("Edition", new Condition()
.withComparisonOperator("EQ")
.withAttributeValueList(
new AttributeValue().withN("1")));