I couldn't find a way to change a column name, for a column I just created, either the browser interface or via an API call. It looks like all object-related API calls manipulate instances, not the class definition itself?
Anyone know if this is possible, without having to delete and re-create the column?
This is how I did it in python:
import json,httplib,urllib
connection = httplib.HTTPSConnection('api.parse.com', 443)
params = urllib.urlencode({"limit":1000})
connection.connect()
connection.request('GET', '/1/classes/Object?%s' % params, '', {
"X-Parse-Application-Id": "yourID",
"X-Parse-REST-API-Key": "yourKey"
})
result = json.loads(connection.getresponse().read())
objects = result['results']
for object in objects:
connection = httplib.HTTPSConnection('api.parse.com', 443)
connection.connect()
objectId = object['objectId']
objectData = object['data']
connection.request('PUT', ('/1/classes/Object/%s' % objectId), json.dumps({
"clonedData": objectData
}), {
"X-Parse-Application-Id": "yourID",
"X-Parse-REST-API-Key": "yourKEY",
"Content-Type": "application/json"
})
This is not optimized - you can batch 50 of the processes together at once, but since I'm just running it once I didn't do that. Also since there is a 1000 query limit from parse, you will need to do run the load multiple times with a skip parameter like
params = urllib.urlencode({"limit":1000, "skip":1000})
From this Parse forum answer : https://www.parse.com/questions/how-can-i-rename-a-column
Columns cannot be renamed. This is to avoid breaking an existing app.
If your app is still under development, you can just query for all the
objects in your class and copy the value of the old column to the new
column. The REST API is very useful for this. You may them drop the
old column in the Data Browser
Hope it helps
Yes, it's not a feature provided by Parse (yet). But there are some third party API management tools that you can use to rename the fields in the response. One free tool is called apibond.com
It's a work around, but I hope it helps
Related
I created PowerBI report which which is connecting to data source via API service. Returning json contains thousands of entities. API service is called via Web.Content function. API service returns always total record count and so we are able to calculate nr. of pages which has to be called to obtain whole dataset. This report is displaying data from our servicedesk app, which is deployed on many servers and for many customers and use Query parameters to connect to any of these servers.
Detail of Power query is below.
Why am I writing here. This report was working without any issue more than 1,5 year but on August 17th one of servers start causing erros in step Pages where are some random lines (pages) with errors - see attached picture labeled "Errors in step Pages". and this is reason that next step Entities (List.Union) in query is stopping refresh and generate errors with message:
Expression.Error: We cannot apply field access to the type List. Details: Value=[List] Key=requests
What is notable
API service si returning records in the same order but faulty lists are random when calling with same parameters
some times is refresh without any error
The same power query called on another server is working correctly , problem is only with one specific server.
This problem started without notice on the most important server after 1,5 year without any problem.
Here is full text power of query for this main source, which is used later in other queries to extract all necessary data. Json is really complicated and I extract from it list of requests, list of solvers, list of solver groups,.... and this base query and its output is input for many referenced queries.
Errors in step Pages
let
BaseAPIUrl = apiurl&"apiservice?", /*apiurl is parameter - name of server e.g. https://xxxx.xxxxxx.sk/ */
EntitiesPerPage = RecordsPerPage, /*RecordsPerPage is parameter and defines nr. of record per page - we used as optimum 200-400 record per pages, but is working also with 4000 record per page*/
ApiToken = FnApiToken(), /*this function is returning apitoken value which is returning value of another api service apiurl&"api/auth/login", which use username and password in body of call to get apitoken */
GetJson = (QParm) => /*definiton general function to get data from data source*/
let
Options =
[ Query= QParm,
Headers=
[
Accept="application/json",
ApiKeyName="apitoken",
Authorization=ApiToken
]
],
RawData = Web.Contents(BaseAPIUrl, Options),
Json = Json.Document(RawData)
in Json,
GetEntityCount = () => /*one times called function to get nr of records using GetJson, which is returned as a part of each call*/
let
QParm = [pp="1", pg="1" ],
Json = GetJson(QParm),
Count = Json[totalRecord]
in
Count,
GetPage = (Index) => /*repeatadly called function to get each page of json using GetJson*/
let
PageNr = Text.From(Index+1),
PerPage = Text.From(EntitiesPerPage),
QParm = [pg = PageNr, pp=PerPage],
Json = GetJson(QParm),
Value = Json[data][requests]
in Value,
EntityCount = List.Max({ EntitiesPerPage, GetEntityCount() }), /*setup of nr. of records to variable*/
PageCount = Number.RoundUp(EntityCount / EntitiesPerPage), /*setup of nr. of pages */
PageIndices = { 0 .. PageCount - 1 },
Pages = List.Transform(PageIndices, each GetPage(_) /*Function.InvokeAfter(()=>GetPage(_),#duration(0,0,0,1))*/), /*here we call for each page GetJson function to get whole dataset - there is in comment test with delay between getpages but was not neccessary*/
Entities = List.Union(Pages),
Table = Table.FromList(Entities, Splitter.SplitByNothing(), null, null, ExtraValues.Error)
I also tried another way of appending pages to list using List.Generate. This is also bringing random errors in list but
it is bringing possibility to transform to table in contrast with original way with using List.Transform, but other referenced queries are failing and contains on the last row errors
When I am exploring content of faulty page/list extracting it via Add as New Query there are always all record without any fail.....
Source = List.Generate( /*another way to generate list of all pages*/
() => [Page = 0, ReqPageData = GetPage(0) ],
each [Page] < PageCount,
each [ReqPageData = GetPage( [Page] ),
Page = [Page] + 1 ],
each [ReqPageData]
),
#"Converted to Table" = Table.FromList(Source, Splitter.SplitByNothing(), null, null, ExtraValues.Error), /*here i am able to generate table from list in contrast when is used List.Generate*/
#"Expanded Column1" = Table.ExpandListColumn(#"Converted to Table", "Column1"), /*here aj can expand list to column*/
#"Removed Errors" = Table.RemoveRowsWithErrors(#"Expanded Column1", {"Column1"}) /*here i try to exclude errors, but i dont know what happend and which records (if any) are excluded*/
Extracting errored page
and finnaly I am tottaly clueless not able to find the cause of this behavior on this specific server. I tested to call pages which are errored via POSTMAN, I discused this issue with author of API service and He also tried to call this API service with all parameters but server is returning every page OK, only Power query is not able to List.Transform ...
I will be grateful and appreciate any tips or advice or if somebody solved the same issue in the past ....
Kuby
No, each error line of list in step List.Transform coud by extracted as new query and there are all records from one page OK. hmmmm
Finnaly, problem described in this issue was caused by "corrupted" content of returning json. The provider of core system informed me that they found bug and after fixing on the side of servisdesk is everything OK again. I tried to find problem in Power query and problem was in servisdesk. :(
i'm using Apollo Client do request a very structured dataset from my server. Something like
-Show
id
title
...
-Seasons
number
-Episodes
id
number
airdate
Thanks to normalization my episodes are stored individually but i cannot query them. For exemple i would like to query all the episodes to then sort them by date to display coming next.
the only way i see is to either 'reduce' my show list to an array of episode and then do the filtering. Or to do a new query to the server.
But it will be so much faster if I could get a list of all Episodes in cache.
Unfortunately with readFragment you can only query One object by its id.
Question:
Is there a way to query the cache for all object of a defined type?
The answer is late, but could have helped someone else, currently apollo does not support it. This is the issue here from github, and also a work around.
https://github.com/apollographql/apollo-client/issues/4724#issuecomment-487373566
Here is the copied workaround by #superandrew213
const serializedState = client.cache.extract()
const typeNameItems = Object.values(serializedState)
.filter(item => item.__typename === 'TypeName')
.map(item => client.readFragment({
fragmentName: 'FragmentName',
fragment: Fragment,
id: item.id,
}))
Please take note that this method is slow, especially if you have a large normalized data.
Time to leave the shy mode behind and make my first post on stackoverflow.
After doing loads of research (plugins, performance, indexes, types of update, friends) and after trying several approaches I was unable to find a proper answer/solution.
So if possible I would like to get your feedback/help in a Microsoft Dynamics CRM 2013/2015 plugin performance issue (or coding technique)
Scenario:
Microsoft Dynamics CRM 2013/2015
2 Entities with Relationship 1:N
EntityA
EntityB
EntityB has the following columns:
Id | EntityAId | ColumnDemoX (decimal) | ColumnDemoY (currency)
Entity A has: 500 records
Entity B has: 150 records per each Entity A record. So 500*150 = 75000 records.
Objective:
Create a Post Entity A Plugin Update to "mimic" the following SQL command
Update EntityB
Set ColumnDemoX = (some quantity), ColumnDemoY = (some quantity) * (some value)
Where EntityAId = (some id)
One approach could be:
using (var serviceContext = new XrmServiceContext(service))
{
var query = from a in serviceContext.EntityASet
where a.EntityAId.Equals(someId)
select a;
foreach (EntityA entA in query)
{
entA.ColumnDemoX = (some quantity);
serviceContext.UpdateObject(entA);
}
serviceContext.SaveChanges();
}
Problem:
The foreach for 150 records in the post plugin update will take 20 secs or more.
While the
Update EntityB Set ColumnDemoX = (some quantity), ColumnDemoY = (some quantity) * (some value) Where EntityAId = (some id)
it will take 0.00001 secs
Any suggestion/solution?
Thank you all for reading.
H
You can use the ExecuteMultipleRequest, when you iterate the 150 entities, save the entities you need to update and after that call the request. If you do this, you only call the service once, that's very good for the perfomance.
If your process could be bigger and bigger, then you should think making it asynchronous as a plug-in or a custom activity workflow.
This is an example:
// Create an ExecuteMultipleRequest object.
requestWithResults = new ExecuteMultipleRequest()
{
// Assign settings that define execution behavior: continue on error, return responses.
Settings = new ExecuteMultipleSettings()
{
ContinueOnError = false,
ReturnResponses = true
},
// Create an empty organization request collection.
Requests = new OrganizationRequestCollection()
};
// Add a UpdateRequest for each entity to the request collection.
foreach (var entity in input.Entities)
{
UpdateRequest updateRequest = new UpdateRequest { Target = entity };
requestWithResults.Requests.Add(updateRequest);
}
// Execute all the requests in the request collection using a single web method call.
ExecuteMultipleResponse responseWithResults =
(ExecuteMultipleResponse)_serviceProxy.Execute(requestWithResults);
Few solutions comes to mind but I don't think they will please you...
Is this really a problem ? Yes it's slow and database update can be so much faster. However if you can have it as a background process (asynchronous), you'll have your numbers anyway. Is it really a "I need this numbers in the next second as soon as I click or business will go down" situation ?
It can be a reason to ditch 2013. In CRM 2015 you can use a calculated field. If you need this numbers only to show up in forms (eg. you don't use them in reporting), you could also do it in javascript.
Warning this is for the desesperate call. If you really need your update to be synchronous, immediate, you can't use calculated fields, you really know what your doing etc... Why not do it directly in the database? I know this is a very bad advice. There are a lot of reason not to do it this way (you can read a few here). It's unsupported and if you do something wrong it could go really bad. But if your real situation is as simple as your example (just a calculated field, no entity creation, no relation modification), you could do it this way. You'll have to consider many things: you won't have any audit on the fields, no security, caching issues, no modified by, etc. Actually I pretty much advise against this solution.
1 - Put it this logic to async workflow.
OR
2 - Don't use
serviceContext.UpdateObject(entA);
serviceContext.SaveChanges();.
Get all the records (150) from post stage update the fields and ExecuteMultipleRequest to update crm records in one time.
Don't send update request for each and every record
I have run sqlmetal.exe agaisnt my database.
SqlMetal.exe /server:server /database:dbname /code:mapping.cs
I have included this into my solution. So I can now create an object for each of the database tables. Great. I now wish to use ling to query by database. Can I presume that none of the connection etc is handled by the output of sqlmetal.exe. If this is correct what ways can I use ling to query my database?
Does the generated code include a Data Context (a class which inherits from System.Data.Linq.DataContext)? If so, then that's probably what you're looking for. Something like this:
var db = new SomeDataContext();
// You can also specify a connection string manually in the above constructor if you want
var records = db.SomeTable.Where(st => st.id == someValue);
// and so on...
I am using the Exchange Web Services Managed API to work with Tasks (Exchange 2007 SP1). I can create them fine. However, when I try to do updates, it works for all of the fields except for the .Body field. Whenever I try to access (read/update) that field, it gives the following error:
"You must load or assign this property before you can read its value."
The code I am using looks like this:
//impersonate the person whose tasks you want to read
Me.Impersonate(userName); //home-made function to handle impersonation
//build the search filter
Exchange.SearchFilter.SearchFilterCollection filter = New Exchange.SearchFilter.SearchFilterCollection();
filter.Add(New Exchange.SearchFilter.IsEqualTo(Exchange.TaskSchema.Categories, "Sales"));
//do the search
EWS.Task exTask = esb.FindItems(Exchange.WellKnownFolderName.Tasks, filter, New Exchange.ItemView(Integer.MaxValue));
exTask.Subject = txtSubject.Text; //this works fine
exTask.Body = txtBody.Text; //This one gives the error implying that the object isn't loaded
The strange thing is that, inspecting the property bag shows that the object contains 33 properties, but {Body} is not one of them. That property seems to be inherited from the base class .Item, or something.
So, do I need to re-load the object as type Item? Or reload it via .Bind or something? Keep in mind that I need to do this with thousands of items, so efficiency does matter to me.
Calling the Load method solved my problem :)
foreach (Item item in findResults.Items)
{
item.Load();
string subject = item.Subject;
string mailMessage = item.Body;
}
I had the same problem when using the EWS. My Code is requesting the events(Appointments) from the
Outlook calendar, at the end I couldn't reach to the body of the Event itself.
The missing point in my situation was the following "forgive me if there is any typo errors":
After gathering the Appointments, which are also derived from EWS Item Class, I did the following:
1- Create a List with the type Item:
List<Item> items = new List<Item>();
2- Added all appointments to items list:
if(oAppointmentList.Items.Count > 0) // Prevent the exception
{
foreach( Appointment app in oAppointmentList)
{
items.Add(app);
}
}
3- Used the exchanged service "I have already created and used":
oExchangeService.LoadPropertiesForItems(items, PropertySet.FirstClassProperties);
now if you try to use app.Body.Text, it will return it successfully.
Enjoy Coding and Best Luck
I forgot to mention the resource:
http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/ce1e0527-e2db-490d-817e-83f586fb1b44
He mentioned the use of Linq to save the intermediate step, it will help you avoid using the List items and save some memory!
RockmanX
You can load properties using a custom property set. Some properties are Extended properties instead of FirstClassProperties.
Little example:
_customPropertySet = new PropertySet(BasePropertySet.FirstClassProperties, AppointmentSchema.MyResponseType, AppointmentSchema.IsMeeting, AppointmentSchema.ICalUid);
_customPropertySet.RequestedBodyType = BodyType.Text;
appointment.Load(_customPropertySet);