/**
* Builds scan query expression using a hash attribute value where to start
* @param pHashAttrValueHash attribute value where to start scanning
*/
public void buildScanExpression(AttributeValue pHashAttrValue){
DynamoDBScanExpression newScanExpression = new DynamoDBScanExpression();
// TODO right now we only support scanning using the key, but we should support other types of scans
newScanExpression.addFilterCondition(getKeySchema().getHashKeyElement().getAttributeName(), buildKeyScanCondition());
dynamoDBExpression = newScanExpression;
}