I have created an application using Serenity framework. I have completed basic functionality for CRUD using serenity. Based on my tables I need to have graphical representations, any charts like high charts, D3 charts or any .
1. How can I get data from the tables using Linq in serenity
Finally I have found the answer for this. We can use sql queries as well as stored procedure to fetch data from DB. I have used stored procedure and linq to get the data from db.
In repository page you can add Linq,
public ListResponse<MyRow> GetUsers(IDbConnection connection)
{
// This must be te Repository
var myRepos = new UserRepository();
// This must be a type of Request (in this case ListRequest)
var request = new ListRequest();
request.Take = 100;
// This must be a type of Response (in this case ListResponse)
var response = new ListResponse<MyRow>();
// This must be called on Repository
var result = myRepos.List(connection, request);
// Data
var data = result.Entities.Where(r => r.Name != "").ToList();
response.Entities = data;
return response;
}
I have already defined MyRow as UserRow like this using MyRow = Entities.UserRow;.
Hope this will help you.
Related
The goal of my springBoot webflux r2dbc application is Controller accepts a Request including a list of DB UPDATE or INSERT details, and Response a result summary back.
I can write a ReactiveCrudRepository based repository to implement each DB operation. But I don't know how to write the Service to group the executions of the list of DB operations and compose a result summary response.
I am new to java reactive programing. Thanks for any suggestions and help.
Chen
I get the hint from here: https://www.vinsguru.com/spring-webflux-aggregation/ . Ideas are :
From request to create 3 Monos
Mono<List> monoEndDateSet -- DB Row ids of update operation;
Mono<List> monoCreateList -- DB Row ids of new inserted;
Mono monoRespFilled -- partly fill some known fields;
use Mono.zip aggregate the 3 monos, map and aggregate the Tuple3 to Mono to return.
Below are key part of codes:
public Mono<ChangeSupplyResponse> ChangeSupplies(ChangeSupplyRequest csr){
ChangeSupplyResponse resp = ChangeSupplyResponse.builder().build();
resp.setEventType(csr.getEventType());
resp.setSupplyOperationId(csr.getSupplyOperationId());
resp.setTeamMemberId(csr.getTeamMemberId());
resp.setRequestTimeStamp(csr.getTimestamp());
resp.setProcessStart(OffsetDateTime.now());
resp.setUserId(csr.getUserId());
Mono<List<Long>> monoEndDateSet = getEndDateIdList(csr);
Mono<List<Long>> monoCreateList = getNewSupplyEntityList(csr);
Mono<ChangeSupplyResponse> monoRespFilled = Mono.just(resp);
return Mono.zip(monoRespFilled, monoEndDateSet, monoCreateList).map(this::combine).as(operator::transactional);
}
private ChangeSupplyResponse combine(Tuple3<ChangeSupplyResponse, List<Long>, List<Long>> tuple){
ChangeSupplyResponse resp = tuple.getT1().toBuilder().build();
List<Long> endDateIds = tuple.getT2();
resp.setEndDatedDemandStreamSupplyIds(endDateIds);
List<Long> newIds = tuple.getT3();
resp.setNewCreatedDemandStreamSupplyIds(newIds);
resp.setSuccess(true);
Duration span = Duration.between(resp.getProcessStart(), OffsetDateTime.now());
resp.setProcessDurationMillis(span.toMillis());
return resp;
}
private Mono<List<Long>> getNewSupplyEntityList(ChangeSupplyRequest csr) {
Flux<DemandStreamSupplyEntity> fluxNewCreated = Flux.empty();
for (SrmOperation so : csr.getOperations()) {
if (so.getType() == SrmOperationType.createSupply) {
DemandStreamSupplyEntity e = buildEntity(so, csr);
fluxNewCreated = fluxNewCreated.mergeWith(this.demandStreamSupplyRepository.save(e));
}
}
return fluxNewCreated.map(e -> e.getDemandStreamSupplyId()).collectList();
}
...
Hi I would like to get all items of a container in a database in cosmos DB. I can see that there are already a lot of methods available but I don't see any getAllItems or a lookalike.
Is there an easy way to do it like using LINQ or something?
Thanks
If you want to do this using Linq, you can do the following (As suggested in this answer here: How can I use LINQ in CosmosDB SDK v3.0 async query?):
var db = Client.GetDatabase(databaseId);
var container = db.GetContainer(containerId);
var q = container.GetItemLinqQueryable<Person>();
var iterator = q.ToFeedIterator();
var results = await iterator.ReadNextAsync();
If you want a non-Linq solution, use this (taken from the v3 SDK samples: https://github.com/Azure/azure-cosmos-dotnet-v3/blob/master/Microsoft.Azure.Cosmos.Samples/Usage/ItemManagement/Program.cs#L259:
QueryDefinition query = new QueryDefinition(
"select * from sales s where s.AccountNumber = #AccountInput ")
.WithParameter("#AccountInput", "Account1");
FeedIterator<SalesOrder> resultSet = container.GetItemQueryIterator<SalesOrder>(
query,
requestOptions: new QueryRequestOptions()
{
PartitionKey = new PartitionKey("Account1"),
MaxItemCount = 1
});
while (resultSet.HasMoreResults)
{
FeedResponse<SalesOrder> response = await resultSet.ReadNextAsync();
// Work through iterator list here
}
Hope this helps!
You can use LINQ like described in Microsoft Azures documentation.
Something like this should be the solution of your problem:
var db = Client.GetDatabase(databaseId);
var container = db.GetContainer(containerId);
//Get iterator or use some LINQ queries here
var iterator = container.GetItemLinqQueryable<YourType>().GetEnumerator();
I have been able to pull down an audit table from Dynamics 365 and load it into Power BI by selecting Get Data, choosing the odata option and using url/api/data/v9.1/audits. I see the column RetrieveAuditDetails, but I don't understand why all the values say Function. Is there a way to extend this to show the old value/new value in the same way you can change, for example, UserIDs to be extended to the full name?
When it comes to audit data, OData/Web API REST endpoint is not so friendly in PowerBI due to the reason that the audit data is stored as delimited values in database. Refer my answer in this SO thread.
If it's a javascript or .net application you can do iterative call using RetrieveAuditDetails function to fetch full details after getting full list using https://crmdev.crm.dynamics.com/api/data/v9.1/audits. This is why you are seeing as Function in there.
For example:
var parameters = {};
var entity = {};
entity.id = "5701259e-59b8-e911-bcd0-00155d0d4a79";
entity.entityType = "audit";
parameters.entity = entity;
var retrieveAuditDetailsRequest = {
entity: parameters.entity,
getMetadata: function() {
return {
boundParameter: "entity",
parameterTypes: {
"entity": {
"typeName": "mscrm.audit",
"structuralProperty": 5
}
},
operationType: 1,
operationName: "RetrieveAuditDetails"
};
}
};
Xrm.WebApi.online.execute(retrieveAuditDetailsRequest).then(
function success(result) {
if (result.ok) {
var results = JSON.parse(result.responseText);
}
},
function(error) {
Xrm.Utility.alertDialog(error.message);
}
);
Update:
On further analysis - there is no big difference between the output schema from the above RetrieveAuditDetails query targeting single auditid or the below filtered audits query targeting single recordid.
https://crmdev.crm.dynamics.com/api/data/v9.1/audits?$filter=_objectid_value eq 449d2fd8-58b8-e911-a839-000d3a315cfc
The fact is either web api or fetchxml, the resultset cannot fetch the important column changedata which contains the changed field values - due to the restriction: Retrieve can only return columns that are valid for read. Column : changedata. Entity : audit
I get this in FetchXML builder:
There is another approach but not PowerBI compatible anyway, using RetrieveRecordChangeHistory to target the recordid to get all the audit collections with old & new values. Example below:
https://crmdev.crm.dynamics.com/api/data/v9.0/RetrieveRecordChangeHistory(Target=#Target)?#Target={%22accountid%22:%22449d2fd8-58b8-e911-a839-000d3a315cfc%22,%22#odata.type%22:%22Microsoft.Dynamics.CRM.account%22}
I am working with code first approach in EDM and facing an error for which I can't the solution.Pls help me
LINQ to Entities does not recognize the method 'Boolean
CheckMeetingSettings(Int64, Int64)' method, and this method cannot be
translated into a store expression.
My code is following(this is the query which I have written
from per in obj.tempPersonConferenceDbSet
where per.Conference.Id == 2
select new PersonDetials
{
Id = per.Person.Id,
JobTitle = per.Person.JobTitle,
CanSendMeetingRequest = CheckMeetingSettings(6327,per.Person.Id)
}
public bool CheckMeetingSettings(int,int)
{
///code I have written.
}
Please help me out of this.
EF can not convert custom code to SQL. Try iterating the result set and assigning the property outside the LINQ query.
var people = (from per in obj.tempPersonConferenceDbSet
where per.Conference.Id == 2
order by /**/
select new PersonDetials
{
Id = per.Person.Id,
JobTitle = per.Person.JobTitle,
}).Skip(/*records count to skip*/)
.Take(/*records count to retrieve*/)
.ToList();
people.ForEach(p => p.CanSendMeetingRequest = CheckMeetingSettings(6327, p.Id));
With Entity Framework, you cannot mix code that runs on the database server with code that runs inside the application. The only way you could write a query like this, is if you defined a function inside SQL Server to implement the code that you've written.
More information on how to expose that function to LINQ to Entities can be found here.
Alternatively, you would have to call CheckMeetingSettings outside the initial query, as Eranga demonstrated.
Try:
var personDetails = obj.tempPersonConferenceDbSet.Where(p=>p.ConferenceId == 2).AsEnumerable().Select(p=> new PersonDetials
{
Id = per.Person.Id,
JobTitle = per.Person.JobTitle,
CanSendMeetingRequest = CheckMeetingSettings(6327,per.Person.Id)
});
public bool CheckMeetingSettings(int,int)
{
///code I have written.
}
You must use AsEnumerable() so you can preform CheckMeetingSettings.
Linq to Entities can't translate your custom code into a SQL query.
You might consider first selecting only the database columns, then add a .ToList() to force the query to resolve. After you have those results you van do another select where you add the information from your CheckMeetingSettings method.
I'm more comfortable with the fluid syntax so I've used that in the following example.
var query = obj.tempPersonConferenceDbSet
.Where(per => per.Conference.Id == 2).Select(per => new { Id = per.Person.Id, JobTitle = per.Person.JobTitle })
.ToList()
.Select(per => new PersonDetails { Id = per.Id,
JobTitle = per.JobTitle,
CanSendMeetingRequest = CheckMeetingSettings(6327, per.Person.Id) })
If your CheckMeetingSettings method also accesses the database you might want to consider not using a seperate method to prevent a SELECT N+1 scenario and try to express the logic as part of the query in terms that the database can understand.
I'm converting an entity object to a model that can be passed around my application without the extra overhead (As well as generating a couple of extra fields for the view etc.
public IEnumerable<PageModel> GetAllPages()
{
var AllPageO = _session.All<Page>();
IList<PageModel> RetO = new List<PageModel>();
foreach (var AP in AllPageO)
{
RetO.Add(new PageModel(AP));
}
return RetO.AsEnumerable();
}
Can this be converted to a Linq Query, the below does work I get the error
Server Error in '/' Application. Only
parameterless constructors and
initializers are supported in LINQ to
Entities.
public IEnumerable<PageModel> GetAllPages()
{
var AllPageO = _session.All<Page>();
var RetO = from EntityO in AllPageO select new PageModel(EntityO);
return RetO;
}
Resharper actually converts the firt loop into this, which also fails with the same error.
IList<PageModel> RetO = PageO.Select(AP => new PageModel(AP)).ToList();
Thats because entity framework is trying to convert optimize your projection expression into sql.
The easy fix is to enumerate the results before the projection:
var RetO = from EntityO in AllPageO.ToList() select new PageModel(EntityO);