CreateBatchGet() public method

Creates a DocumentBatchGet object for the current table, allowing a batch-get operation against DynamoDB.
public CreateBatchGet ( ) : DocumentBatchGet
return DocumentBatchGet
Table Class Documentation
示例#1
0
        /// <summary>
        /// Tries to make up a batch get operation from SearchConditions
        /// </summary>
        private static DocumentBatchGet GetBatchGetOperationForSearchConditions(Table tableDefinition, SearchConditions conditions, string keyFieldName, Primitive hashKeyValue)
        {
            // there should be only one IN operator for key field
            if
            (!(
                (conditions.Count == 1)
                &&
                (conditions.Keys.First() == keyFieldName)
            ))
            {
                return null;
            }

            var conditionList = conditions.Values.First();
            if
            (!(
                (conditionList.Count == 1)
                &&
                (conditionList.First().Operator == ScanOperator.In)
            ))
            {
                return null;
            }

            var result = tableDefinition.CreateBatchGet();
            foreach (var value in conditionList.First().Values)
            {
                if (hashKeyValue == null)
                {
                    result.AddKey((Primitive)value);
                }
                else
                {
                    result.AddKey(hashKeyValue, (Primitive)value);
                }
            }
            return result;
        }