问使用c从amazon db检索数据

EN

static int example_get_item(struct aws_handle *aws)
{
    struct aws_dynamo_attribute attributes[] = {
        {
         .name = "name",
         .name_len = strlen("name"),
         .type = AWS_DYNAMO_STRING,
         }
    };
    struct aws_dynamo_get_item_response *r = NULL;
    struct aws_dynamo_attribute *real_name;

    const char *request = "{\
    \"TableName\":\"testTable\",\
    \"Key\":{\
        \"HashKeyElement\":{\"N\":\"101\"}\
    },\
    \"AttributesToGet\":[\
        \"name\"]\
    }";

    r = aws_dynamo_get_item(aws, request, attributes,
                sizeof(attributes) / sizeof(attributes[0]));
    if (r == NULL) {
        return -1;
    }
    if (r->item.attributes == NULL) {
        aws_dynamo_free_get_item_response(r);
        return -1;
    }
    real_name = &(r->item.attributes[0]);
    printf("name = %s \n", real_name->value.string);
    aws_dynamo_free_get_item_response(r);
    return 0;
}