I am using Swift to let my app update an item on DynamoDB. I followed the example https://github.com/aws/aws-sdk-ios/blob/master/AWSiOSSDKTests/AWSDynamoDBTests.m#L244, the "- (void)testUpdateItem" method. My codes are as follows:
var dynamoDB = AWSDynamoDB()
var hashValue: AWSDynamoDBAttributeValue = AWSDynamoDBAttributeValue()
hashValue.S = userID
var updatedValue: AWSDynamoDBAttributeValue = AWSDynamoDBAttributeValue()
updatedValue.S = updatedContent
var updateInput: AWSDynamoDBUpdateItemInput = AWSDynamoDBUpdateItemInput()
updateInput.tableName = kAWSDynamoDBMoEndpointARNTableName
updateInput.key = ["UserID": hashValue]
var valueUpdate: AWSDynamoDBAttributeValueUpdate = AWSDynamoDBAttributeValueUpdate()
valueUpdate.value = updatedValue
valueUpdate.action = AWSDynamoDBAttributeAction.Put
updateInput.attributeUpdates = ["Updated": valueUpdate]
updateInput.returnValues = AWSDynamoDBReturnValue.UpdatedNew
dynamoDB.updateItem(updateInput).waitUntilFinished()
However, as I run the codes, it always returns fatal error: unexpectedly found nil while unwrapping an Optional value. Looking into the error, I can find it is from Swift._fatalErrorMessage (Swift.StaticString, Swift.StaticString, Swift.StaticString, Swift.Uint) -> () with Thread 1: EXC_BREAKPOINT (code=EXC_ARM_BREAKPOINT, subcode=0xe7ffdefe)
I didn't use .continueWithBlock or .continueWithSuccessBlock cuz neither helps to catch the error.
Any idea why? THANKS
You need to get an instance of AWSDynamoDB as follows:
let dynamoDB = AWSDynamoDB.defaultDynamoDB()
You are using the default - init method without any parameter, and it causes AWSDynamoDB instance to have no AWSServiceConfiguration.
With the current AWS, found that this worked well for posting the updateItem in Swift.
dynamoDB.updateItem(updateInput) .continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: { (task:AWSTask!) -> AnyObject! in
if (task.error == nil) {
log.debug("task.error == nil")
}
return nil
})
// instead of
dynamoDB.updateItem(updateInput).waitUntilFinished()
Related
I am trying to use the cursor to implement pagination but when I try to use the endCursor that is returned after my first query (queries 10 records), it gives me an error "invalid encoding". By the way I have a total of 16 records. I am expecting that on my next query, it will give me the last 6 records
Here's my code:
router.get("/scan/history/query", async (req: Request, resp: Response) => {
const userId = resp.locals.user && resp.locals.user.sub
const pageCursor = req.query.cursor
if (userId) {
let mainQuery = dataStoreClient.createQuery(process.env.GOOGLE_DATASTORE_KIND_SCAN_RESULTS)
.filter("userId", QUERY_FILTER_OPERATORS.EQUAL, userId)
.filter("isDeletedDocument", QUERY_FILTER_OPERATORS.EQUAL, false)
.select(["__key__", "scanDate", "scanKeyword", "scanFilter",
"hasRecord", "scanThreatStatus", "scanDuration",
"scanType", "scanStatus", "domainName"])
.order("scanDate", { descending: true })
.limit(10)
if (pageCursor) {
mainQuery = mainQuery.start(pageCursor)
}
const results = await mainQuery.run()
const entities = results[0]
const info = results[1]
const hasNextPage = info.moreResults !== "NO_MORE_RESULTS"
const pageResult = new PageResult(entities, info.endCursor, hasNextPage)
return HttpResult.Ok(resp, pageResult)
}
return HttpResult.UriNotFound(resp)
})
UPDATE:
I tried this with thousands of records and my limit is still 10. It works perfectly for like 2 or 3 queries but when I tried to query for the fourth time, it throws me an error "invalid encoding"
I know this is old, but in case anyone else comes across this issue (as I just did), I was able to resolve it by encoding the cursor value using encodeURIComponent(). It looks like the cursor value occasionally contains a + character, which causes issues when not escaped in the URL
I am reading my data through a web service that returns a percentage as a string and I need to format it properly in my app. Currently I receive an error message that reads "Argument labels '(_:)' do not match any available overloads".
Suggestions on how to resolve this issue?
if let dUnInsured = result[0]["UnInsured"] as? String, let doubleNum = Double(dUnInsured) {
let sUnInsured = dollarFormatter.string(from: (NSDecimalNumber(Decimal(doubleNum))))!
self.inUninsured.text = sUnInsured
}
Try like this way.
if let dUnInsured = result[0]["UnInsured"] as? String, let doubleNum = Double(dUnInsured) {
let sUnInsured = dollarFormatter.string(from: (NSNumber(value: doubleNum)))!
self.inUninsured.text = sUnInsured
}
I am trying to create device pool for a project using AWS DeviceFarm sdk in C#. I use the following command:
var createDevicePoolResponse = client.CreateDevicePool (new CreateDevicePoolRequest {
Name = "CustomDevicePool",
ProjectArn = projectArn,
Rules = new List<Rule> {
new Rule {
Attribute = DeviceAttribute.ARN,
Operator = RuleOperator.EQUALS_TO,
Value = "arn:aws:devicefarm:us-west-2::device:577DC08D6B964346B86610CFF090CD59"
}
}
});
It thinks for about a minute then I receive the following exception:
Error making request with Error Code InternalFailure and Http Status
Code InternalServerError. No further error information was returned by
the service.
ProjectArn is valid. I also tried different rules and get the same error every time.
Figured it out. Value needs to be surrounded with square brackets like so
var createDevicePoolResponse = client.CreateDevicePool (new CreateDevicePoolRequest {
Name = "CustomDevicePool",
ProjectArn = projectArn,
Rules = new List<Rule> {
new Rule {
Attribute = DeviceAttribute.ARN,
Operator = RuleOperator.IN,
Value = "[\"arn:aws:devicefarm:us-west-2::device:D45C750161314335924CE0B9B7D2558E\"]"
}
}
});
When I have an array of Sitecore IDs, for example TargetIDs from a MultilistField, how can I query the ContentSearchManager to return all the SearchResultItem objects?
I have tried the following which gives an "Only constant arguments is supported." error.
using (var s = Sitecore.ContentSearch.ContentSearchManager.GetIndex("sitecore_master_index").CreateSearchContext())
{
rpt.DataSource = s.GetQueryable<SearchResultItem>().Where(x => f.TargetIDs.Contains(x.ItemId));
rpt.DataBind();
}
I suppose I could build up the Linq query manually with multiple OR queries. Is there a way I can use Sitecore.ContentSearch.Utilities.LinqHelper to build the query for me?
Assuming I got this technique to work, is it worth using it for only, say, 10 items? I'm just starting my first Sitecore 7 project and I have it in mind that I want to use the index as much as possible.
Finally, does the Page Editor support editing fields somehow with a SearchResultItem as the source?
Update 1
I wrote this function which utilises the predicate builder as dunston suggests. I don't know yet if this is actually worth using (instead of Items).
public static List<T> GetSearchResultItemsByIDs<T>(ID[] ids, bool mustHaveUrl = true)
where T : Sitecore.ContentSearch.SearchTypes.SearchResultItem, new()
{
Assert.IsNotNull(ids, "ids");
if (!ids.Any())
{
return new List<T>();
}
using (var s = Sitecore.ContentSearch.ContentSearchManager.GetIndex("sitecore_master_index").CreateSearchContext())
{
var predicate = PredicateBuilder.True<T>();
predicate = ids.Aggregate(predicate, (current, id) => current.Or(p => p.ItemId == id));
var results = s.GetQueryable<T>().Where(predicate).ToDictionary(x => x.ItemId);
var query = from id in ids
let item = results.ContainsKey(id) ? results[id] : null
where item != null && (!mustHaveUrl || item.Url != null)
select item;
return query.ToList();
}
}
It forces the results to be in the same order as supplied in the IDs array, which in my case is important. (If anybody knows a better way of doing this, would love to know).
It also, by default, ensures that the Item has a URL.
My main code then becomes:
var f = (Sitecore.Data.Fields.MultilistField) rootItem.Fields["Main navigation links"];
rpt.DataSource = ContentSearchHelper.GetSearchResultItemsByIDs<SearchResultItem>(f.TargetIDs);
rpt.DataBind();
I'm still curious how the Page Editor copes with SearchResultItem or POCOs in general (my second question), am going to continue researching that now.
Thanks for reading,
Steve
You need to use the predicate builder to create multiple OR queries, or AND queries.
The code below should work.
using (var s = Sitecore.ContentSearch.ContentSearchManager.GetIndex("sitecore_master_index").CreateSearchContext())
{
var predicate = PredicateBuilder.True<SearchResultItem>();
foreach (var targetId in f.Targetids)
{
var tempTargetId = targetId;
predicate = predicate.Or(x => x.ItemId == tempTargetId)
}
rpt.DataSource = s.GetQueryable<SearchResultItem>().Where(predicate);
rpt.DataBind();
}
I need to get the primary key for a row and then insert it into one of the other columns in a string.
So I've tried to do it something like this:
newsObj = new news();
newsObj.name = "test"
newsObj.Save();
newsObj.url = String.Format("blah.aspx?p={0}",newsObj.col_id);
newsObj.Save();
But it doesn't treat it as the same data object so newsObj.col_id always comes back as a zero. Is there another way of doing this? I tried this on another page and to get it to work I had to set newsObj.SetIsLoaded(true);
This is the actual block of code:
page p;
if (pageId > 0)
p = new page(ps => ps.page_id == pageId);
else
p = new page();
if (publish)
p.page_published = 1;
if (User.IsInRole("administrator"))
p.page_approved = 1;
p.page_section = staticParent.page_section;
p.page_name = PageName.Text;
p.page_parent = parentPageId;
p.page_last_modified_date = DateTime.Now;
p.page_last_modified_by = (Guid)Membership.GetUser().ProviderUserKey;
p.Add();
string urlString = String.Empty;
if (parentPageId > 0)
{
urlString = Regex.Replace(staticParent.page_url, "(.aspx).*$", "$1"); // We just want the static page URL (blah.aspx)
p.page_url = String.Format("{0}?p={1}", urlString, p.page_id);
}
p.Save();
If I hover the p.Save(); I can see the correct values in the object but the DB is never updated and there is no exception.
Thanks!
I faced the same problem with that :
po oPo = new po();
oPo.name ="test";
oPo.save(); //till now it works.
oPo.name = "test2";
oPo.save(); //not really working, it's not saving the data since isLoaded is set to false
and the columns are not considered dirty.
it's a bug in the ActiveRecord.tt for version 3.0.0.3.
In the method public void Add(IDataProvider provider)
immediately after SetIsNew(false);
there should be : SetIsLoaded(true);
the reason why the save is not working the second time is because the object can't get dirty if it is not loaded. By adding the SetIsLoaded(true) in the ActiveRecord.tt, when you are going to do run custom tool, it's gonna regenerate the .cs perfectly.