Data binding

26 Feb 201812 minutes to read

Binding pivot tree map to offline cube

To connect to an OLAP cube available in the local machine, the physical path of the cube should be set in the connection string. The following code sample illustrates this process:

C#

string connectionString = @"DataSource = system drive:\OfflineCube\Adventure_Works_Ext.cub; Provider = MSOLAP;";
OlapDataManager DataManager = new OlapDataManager(connectionString);

Binding pivot tree map to cube in local SQL Server

To connect to an OLAP cube available in the SQL Server Analysis Service of the local machine, the server name and database name should be set in the connection string. If you have any credentials to connect your cube, then set the user ID and password attributes accordingly. The following code sample illustrates this process:

C#

string connectionString = "Data source=localhost; Initial Catalog=Adventure Works DW;"; 
OlapDataManager DataManager = new OlapDataManager(connectionString);

Binding pivot tree map to cube in online SQL Server

To connect to an OLAP cube available in SQL Server Analysis Service in online server through XML/A, the host server link and database name should be set in the connection string. If you have any credentials to connect your cube, then set the user ID and password attributes accordingly. The following code sample illustrates this process:

C#

string connectionString = "Data Source=http://bi.syncfusion.com/olap/msmdpump.dll; Initial Catalog=Adventure Works DW 2008 SE;"; 
OlapDataManager DataManager = new OlapDataManager(connectionString);

Binding pivot tree map to cube in online Mondrian Server

To connect to an OLAP cube available in Mondrian Server through XML/A, the host server link and database name should be set in the connection string. If you have any credentials to connect your cube, then set the user ID and password attributes accordingly. The following code sample illustrates this process:

C#

string connectionString = @"Data Source = http://localhost:8080/mondrian/xmla; Initial Catalog =FoodMart;";
OlapDataManager DataManager = new OlapDataManager(connectionString);
DataManager.DataProvider.ProviderName = Syncfusion.Olap.DataProvider.Providers.Mondrian;

Binding pivot tree map to cube in online Active Pivot Server

To connect to an OLAP cube available in Active Pivot Server through XML/A, the host server link and database name should be set in the connection string. If you have any credentials to connect your cube, then set the user ID and password attributes accordingly. The following code sample illustrates this process:

C#

string connectionString = @"Data Source = http://localhost:8080/cva_s/xmla; Initial Catalog = CVAS;";
OlapDataManager DataManager = new OlapDataManager(connectionString);
DataManager.DataProvider.ProviderName=Syncfusion.Olap.DataProvider.Providers.ActivePivot;

WCF

Adding a WCF service

To add a WCF service in an existing web application, right-click the project in the solution explorer and select Add > New Item. In the Add New Item window, select the WCF service and name it OlapService.svc, and then click Add.

The WCF service is added to your application, which, in-turn, comprises the following files. The utilization of these files will be explained in the immediate sections.

• OlapService.svc
• OlapService.svc.cs
• IOlapService.cs

Configuring WCF service class

Remove the “DoWork” method present in both OlapService.svc.cs and IOlapService.cs files. Next, add “AspNetCompatibilityRequirements” attribute on top of the main class present in OlapService.svc.cs and set the “RequirementsMode” value to “Allowed”.

C#

namespace PivotTreeMapDemo
{
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class OlapService : IOlapService
    {

    }
}

List of dependency libraries

Next, you can add the below-mentioned dependency libraries to your web application. These libraries can be found in the GAC (Global Assembly Cache).

To add them to your web application, right-click References in the solution explorer and select Add Reference. In the Reference Manager dialog, under Assemblies > Extension, the following Syncfusion libraries are found.

NOTE

If you have installed any version of SQL Server Analysis Service (SSAS) or Microsoft ADOMD.NET utility, then the location of Microsoft.AnalysisServices.AdomdClient library is [system drive:\Program Files (x86)\Microsoft.NET\ADOMD.NET]. And if you have installed any version of Essential Studio, then the location of Syncfusion libraries is [system drive:\Program Files (x86)\Syncfusion\Essential Studio\28.1.33\Assemblies].

• Microsoft.AnalysisServices.AdomdClient
• Syncfusion.Compression.Base
• Syncfusion.Linq.Base
• Syncfusion.Olap.Base
• Syncfusion.PivotAnalysis.Base
• Syncfusion.EJ
• Syncfusion.EJ.Web
• Syncfusion.EJ.Export
• Syncfusion.EJ.Pivot

List of namespaces

Following is the list of namespaces to be added on top of the main class in the OlapService.svc.cs file:

C#

using System.Web;
using System.Collections.Generic;
using System.Configuration;
using System.Linq;
using System.Net;
using System.Web.Script.Serialization;
using Syncfusion.Olap.Manager;
using Syncfusion.Olap.Reports;
using System.ServiceModel.Activation;
using Syncfusion.JavaScript;
using OLAPUTILS = Syncfusion.JavaScript.Olap;

namespace PivotTreeMaptDemo
{
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class OlapService : IOlapService
    {

    }
}

Data source initialization

Now, the connection string to connect the OLAP cube and pivot tree map instances is created immediately in the main class of the OlapService.svc.cs file.

C#

namespace PivotTreeMaptDemo
{
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
    public class OlapService : IOlapService
    {
        PivotTreeMap htmlHelper = new PivotTreeMap();
        string connectionString = "Data Source=http://bi.syncfusion.com/olap/msmdpump.dll; Initial Catalog=Adventure Works DW 2008 SE;";
        //Other codes

    }
}

Service methods in WCF service

First, declare the service methods in the IOlapService interface, find in the IOlapService.cs file which was created while adding the WCF service to the application.

C#

namespace PivotTreeMaptDemo
{
    [ServiceContract]
    public interface IOlapService
    {
        [OperationContract]
        Dictionary< string, object > InitializeTreeMap(string action, string currentReport, string customObject);

        [OperationContract]
        Dictionary<string, object> DrillTreeMap(string action, string drillInfo, string olapReport, string customObject);
    }
}

Then, elaborate the service methods in the main class, found in the OlapService.svc.cs file.

C#

namespace PivotTreeMaptDemo 
{ 
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] 
    public class OlapService : IOlapService
    {
        PivotTreeMap htmlHelper = new PivotTreeMap(); 
        string connectionString = "Data Source=http://bi.syncfusion.com/olap/msmdpump.dll; Initial Catalog=Adventure Works DW 2008 SE;";
        //This method provides the required information from the server side when initializing the PivotTreeMap.
        public Dictionary< string, object > InitializeTreeMap(string action, string currentReport, string customObject)
        {
            OlapDataManager DataManager = null;
            DataManager = new OlapDataManager(connectionString);
            DataManager.SetCurrentReport(CreateOlapReport());
            return htmlHelper.GetJsonData(action, DataManager);
        }

        public Dictionary<string, object> DrillTreeMap(string action, string drillInfo, string olapReport, string customObject)
        {
            OlapDataManager DataManager = new OlapDataManager(connectionString);            
            DataManager.SetCurrentReport(OLAPUTILS.Utils.DeserializeOlapReport(olapReport));
            return htmlHelper.GetJsonData(action, DataManager, drillInfo);
        }

        private OlapReport CreateOlapReport()
        {
            OlapReport olapReport = new OlapReport();
            olapReport.Name = "Default Report";
            olapReport.CurrentCubeName = "Adventure Works";

            DimensionElement dimensionElementColumn = new DimensionElement();
            //Specifying the Name for the Dimension Element
            dimensionElementColumn.Name = "Date";
            dimensionElementColumn.AddLevel("Fiscal", "Fiscal Year");

            MeasureElements measureElementColumn = new MeasureElements();
            //Specifying the Name for the Measure Element
            measureElementColumn.Elements.Add(new MeasureElement { Name = "Customer Count" });

            DimensionElement dimensionElementRow = new DimensionElement();
            //Specifying the Dimension Name
            dimensionElementRow.Name = "Customer";
            dimensionElementRow.AddLevel("Customer Geography", "Country");

            ///Adding Row Members
            olapReport.SeriesElements.Add(dimensionElementRow);
            ///Adding Column Members
            olapReport.CategoricalElements.Add(dimensionElementColumn);
            ///Adding Measure Element
            olapReport.CategoricalElements.Add(measureElementColumn);
            return olapReport;
        }
    }
}

Configuring web configuration file

The services can be exposed through the properties such as binding, contract, and address by using an endpoint.

• Contract: This property indicates that the contract of the endpoint is exposed. Refer to the IOlapService contract and it is written as PivotTreeMapDemo.IOlapService.
• Binding: In your application, you can use webHttpBinding to post and receive requests and responses between the client-end and the service.
• BehaviorConfiguration: This property contains the name of the behavior to be used in the endpoint.

The endpointBehaviors are illustrated as follows:

XAML

<system.serviceModel> 
    ...... 
    ...... 
    <services> 
        <service name="PivotTreeMapDemo.OlapService"> 
            <endpoint address="" behaviorConfiguration="PivotTreeMapDemo.OlapServiceAspNetAjaxBehavior" binding="webHttpBinding" contract="PivotTreeMapDemo.IOlapService" /> 
        </service> 
    </services> 
</system.serviceModel>

The endpointBehaviors contain all behaviors for an endpoint. You can link each endpoint to the respective behavior only by using the name property.

XAML

<system.serviceModel> 
<behaviors> 
        <endpointBehaviors> 
            <behavior name="PivotTreeMapDemo.OlapServiceAspNetAjaxBehavior"> 
                <enableWebScript /> 
            </behavior> 
        </endpointBehaviors> 
    </behaviors> 
    ...... 
    ...... 
</system.serviceModel>

NOTE

In this example, the “PivotTreeMapDemo” indicates the name and root namespace of the application that is created in the Visual Studio IDE and the “OlapService” indicates the name of the created WCF service.

The above code will generate a simple pivot tree map showing customer count over different customer geographic locations across a period of fiscal years.