In the following microsoft documentation: -
https://learn.microsoft.com/en-us/sql/ado/guide/appendixes/microsoft-data-shaping-service-for-ole-db-ado-service-provider?view=sql-server-2017
this feature is being removed and the suggestion is to use XML. Has anyone done this? I'm wondering what they mean, in terms of loading the structure of what MSDataShape is by using XML, or just to use XML objects?
TIA
I believe this is referring to the FOR XML clause of T-SQL, which performs much the same job as MSDataShape in that it returns hierarchically nested data.
Port your MSDataShape queries to FOR XML queries and change the client to parse the results instead of using the MSDataShape OLEDB provider.
At the client side, SAX or pull parsing would be the best fit to port code that previously used MSDataShape (which also had a move-through-the-records cursor based model).
This is my bit of code that is helpful. My MSDataShape code still works, therefore I propose using that to generate your XML as a template, then use that going forward to load them: -
Dim objShapeMaker As clsShapeMaker
Dim rsoTemp As ADODB.Recordset
Dim strXMLTemplate As String
' Template file
strXMLTemplate = "C:\Temp\Template_GI.xml"
' Create the MSDataShape and save it to XML
Set rsoTemp = objShapeMaker.CreateGI()
rsoTemp.Save strXMLTemplate, adPersistXML
' Now we have the XML in a file going forward, load it in my recordset
Set rsoTemp = New ADODB.Recordset
rsoTemp.Open strXMLTemplate, , , , adCmdFile
' Cleanup
Set rsoTemp = Nothing
Set objShapeMaker = Nothing
If you don't like the idea of generating XML template files to maintain, you could do this via .NET and expose it to COM to use in your VB6/VBA application as mentioned here.
I have made a .NET application that can generate these XML files from simple code lines should anyone want going forward that is similar to the blog listed, however it handles child recordsets with relationships.
EDIT 1: This works great if you have schema set ups without returning data. As far as I can tell, to populate these effectively, it's better to write code to load the structure first, and populate it after from seperate recordsets (which is slower!)
EDIT 2: This is the approach we are taking with a replacement in a .NET Interop. Initially looking at bringing XML from SQL and parsing that back as required. This could be bought back into a DataSet and that's parsed into the target recordset as well, but then the relationship between the tables in the result dataset needs to be set in code rather than the one place in T-SQL with XML output.
Related
I've been refactoring an existing Umbraco project to use more performant querying when getting back document data as everything was previously being returned using LINQ. I have been using a combination of Umbraco's querying via XPaths and Examine.
I am currently stumped on trying to get child documents using the Umbraco.ContentAtXPath() method. What I would like to do is get child document based on a path I parse to the method. This is what I have currently:
IEnumerable<IPublishedContent> umbracoPages = Umbraco.ContentAtXPath("//* [#isDoc]/descendant::/About [#isDoc]");
Running this returns a "Object reference not set to an instance of an object." error and unable to see exactly where I'm going wrong (new to this form of querying in Umbraco).
Ideally, I'd like to enhance the querying to also carry out sorting using the non-LINQ approach, as demonstrated here.
Up until Umbraco 8, content was cached in an XML file, which made XPath perfect for querying content efficiently. In v8, however, the so called "NuCache" is not file based nor XML based, so the XPath query support is only there for ... well... Old times sake, I guess? Either way it's probably not going to be super efficient and (I'd advise) not something to "aim for". That said I of course don't know what you are changing from (Linq can be a lot of things) :-/
It certainly depends on how big your dataset is.
As Umbraco has moved away from the XML backed cache, you should look into Linq queries against your content models. Make sure you use ModelsBuilder to generate the models.
On a small dataset Linq will be much quicker than examine. On a large dataset Examine/Lucene will be much more steady on performance.
Querying NuCache is pretty fast in Umbraco 8, only beaten by an Examine search.
Assuming you're using Models Builder, and your About page is a child of Home page, you could use:
var homePage = (HomePage) Model.Root();
var aboutPage = homePage?.Children<AboutPage>().FirstOrDefault();
var umbracoPages = aboutPage.Children();
Where HomePage is your home page Document Type Alias and AboutPage is your About page Document Type alias.
What I want:
I am working with an MS Access database to produce a report for the Ontario Professional Engineering University Accreditation board. The PEO have their templates in MS Excel and I MUST use their exact format.
I want to output the data from the Access DB to the Excel sheet (easy enough), but I want to copy their formatting when producing a new file. (I do NOT want to keep an empty template file and copy it each time).
So essentially I'm looking to somehow store the template in code. (Other suggestions are welcome!)
What I've tried:
Some of you will read this and think i'm an idiot. But what i tried was to get the data from excel on the MS Clipboard through the API Code and store the DataObject as (i was hoping) some sort of string.
But i could not preserve the formatting or cell shading from the original MS Excel template.
Any suggestions?...
You could store the Excel template(s) within the database by creating a table that includes an Attachment field
creating a record and saving the Excel template as an attachment to that record
and then using VBA code like this to save a new copy of the Excel document to disk whenever you need one:
Option Compare Database
Option Explicit
Public Sub SaveReportTemplateToFile()
Dim cdb As DAO.Database, rowRst As DAO.Recordset, attachRst As DAO.Recordset2, attachField As DAO.Field2
Set cdb = CurrentDb
Set rowRst = cdb.OpenRecordset("SELECT TemplateFile FROM ReportTemplates WHERE ID=1")
Set attachRst = rowRst.Fields("TemplateFile").Value
Set attachField = attachRst.Fields("FileData")
attachField.SaveToFile "C:\Users\Gord\Desktop\" & attachRst.Fields("FileName").Value
Set attachField = Nothing
attachRst.Close
Set attachRst = Nothing
rowRst.Close
Set rowRst = Nothing
Set cdb = Nothing
End Sub
What you are going to have to do is first export all the data into a new sheet of an empty template, then link all the data to the correct place on the template and then remove the sheet with all the data, keeping the data on the template.
As far as I know there is no quicker way to do this, but here is an example: http://www.rogersaccesslibrary.com/forum/topic350.html
It will be quite a job, but doable, if the template is well setup.
I am using two different datasets to populate datagridview my project using visual studio using vb.net. It is windows forms application which is used to display information from the database based on user inputs. Once the information is displayed the user can save the information into a table specifically created to store the report information in order for it to be recalled at a later date. I am now trying to recall this information so have created my dataset in the same way as before and am now trying to invoke a new occurrence of it and this is where the probelm begins. The code is below.
Dim dv2 As New System.Data.DataView
dv2 = New System.Data.DataView(DataSet2.Tables(0), "Status <> ''", "",
DataViewRowState.CurrentRows)
DataTable2TableAdapter.fill(DataSet2.DataTable2, f5.ComboBox2.SelectedValue)
I am getting two issues.
For DataSet2.Tables(0): Reference to a non-shared member requires an object reference
For DataTable2TableAdapter: ’DataTable2TableAdapter’ is not declared. It may be inaccessible due to its protection level.
I dont know why this is happening as I have written the same code here as for my previous data set other than changing the SQL statement behind the dataset at set up. Any thoughts would be welcome as I am totally out of ideas. All questions are welcomed.
Thanks
Try the following code to fix your error number 1....
Dim tablezero as System.Data.DataTable
'
tablezero = DataSet2.Tables(0)
The reason your getting the error is because you are trying to access an object (Table(0)) and it is not visible to the code that is trying to access it, if it was SHARED then it would be visible.
So you can resolve it by defining and object instance/reference to it and then accessing that reference, which in this case i have called "tablezero" (or by making table(0) SHARED - usually not the best bet unlessits neccesary - no point in having something accessible to the whole class it is declared in unless absolutelty neccessary)
It is quite possible the second error may dissapear after just fixing above, then again its difficult to tell without your code for Dataset2
Hope it helps.
I see articles on using SPMetal to generate the .cs file that allows LINQ to work properly. The file I'm talking about inherits from the Microsoft.SharePoint.Linq.DataContext class. How can I use LINQ without recompiling on my production environment, since I would need to regenerate this file using SPMetal on my production environment? I suspect the answer is going to be "can't do it".
I guess I'll use a CAML query instead unless there is some easier way to use LINQ that I am missing.
If the objective is just to query lists using LINQ and you want to avoid such recompilations, do not use SPMetal.
LINQ can be directly used on SPListItemCollection
e.g.
var FindCustomer = from SPListItem Item in Customers.Items
where Item["Orders"] as int == 5
select Item;
//or select new{Title = Item["Title"]}
This does not have hard coded entities but is more flexible. And as long as your list column names remain same, code can be deployed on any environment even if other lists are changing.
Also you can choose to retrieve few chosen field's data instead of retrieving data of all the fields every time.
There is no problem I guess. Personally I have been using Linq for good amount of time. I never generated the cs specifically for production. Is your site different across environments?
Im not sure if I'm missing the point or not, but the DataContext object takes the URL as apart of the constructor, so you should retrieve the URL from config somewhere E.g. database
DataContext teamSite = new DataContext("http://MarketingServer/SalesTeam");
OR use the SPContext object, if your code has a SharePoint context. E.g. in a web part
DataContext teamSite = new DataContext(SPContext.Current.Web.Url);
I just created a GUI using guide in MATLAB for a small project I'm working on. I have amongst other things two text fields for from and to dates. Now I'd like to get rid of them and use a Java date select tool. Of course this is not possible using guide so I need to add them manually.
I've managed to get them to show up by putting this code into my Opening_Fcn,
uicomponent(handles, 'style','com.jidesoft.combobox.DateChooserPanel','tag','til2');
using UICOMPONENT.
But even though it shows up I can't access the date select's attributes, for example
get(handles.til2)
returns
??? Reference to non-existent field 'til2'.
How can I fix this?
Unless you edit the saved GUI figure, the basic handles structure will not include your new component by default.
One way to access you component is to store the handle via guidata, by adding the following to your opening function:
handles.til2 = uicomponent(handles, 'style','com.jidesoft.combobox.DateChooserPanel','tag','til2');
guidata(hObject,handles)
Functions that need to access the handle need the line
handles = guidata(hObject)
to return the full handles structure that includes the filed til2