Base class for custom data transformations. To create a custom transformation you need to extend this
class and CustomDataRowReader, register the transformation class in your AddIn by
using the overriddenRegisterDataTransformations(AddInDataTransformationRegistrar). If necessary create a UI and register
in the overridden RegisterViews(AddInViewRegistrar) together with your transformation.
Inheritance Hierarchy
Spotfire.Dxp.DataDataTransformation
Spotfire.Dxp.Application.ExtensionCustomDataTransformation
Namespace: Spotfire.Dxp.Application.Extension
Assembly: Spotfire.Dxp.Application (in Spotfire.Dxp.Application.dll) Version: 65.0.19510.3242 (65.0.19510.3242)
Syntax
C#
[SerializableAttribute] [PersistenceVersionAttribute(1, 0)] public abstract class CustomDataTransformation : DataTransformation
The CustomDataTransformation type exposes the following members.
Constructors
Name | Description | |
---|---|---|
CustomDataTransformation |
Initializes a new instance of the CustomDataTransformation class.
| |
CustomDataTransformation(SerializationInfo, StreamingContext) | Implements ISerializable. |
Properties
Name | Description | |
---|---|---|
LoadReport | Gets the PartialDataLoadReport that can be used to
report errors during connection.
(Inherited from DataTransformation.) | |
Name | Gets the display name of the transformation.
(Inherited from DataTransformation.) | |
TypeId | Gets the type identifier for the data source.
(Inherited from DataTransformation.) |
Methods
Name | Description | |
---|---|---|
Connect | Connects to the input reader.
A DataRowReader can then be retrieved from the DataTransformationConnection.
(Inherited from DataTransformation.) | |
ConnectCore | Connects to the input reader. A DataRowReader
can then be retrieved from the DataTransformationConnection.
(Inherited from DataTransformation.) | |
Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) | |
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) | |
GenerateDataHistoryCore |
Creates detail information for the DataTransformation.
See DataHistoryBuilder for more information on
how to add detailed information to the data history.
(Inherited from DataTransformation.) | |
GetHashCode | Serves as the default hash function. (Inherited from Object.) | |
GetObjectData |
Implements ISerializable.
(Inherited from DataTransformation.) | |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) | |
ToString | Returns a string that represents the current object. (Inherited from Object.) |
Explicit Interface Implementations
Name | Description | |
---|---|---|
ISerializableGetObjectData |
Implements ISerializable.
(Inherited from DataTransformation.) |
Examples
C#
For the reader implementation see the example in CustomDataRowReader [Serializable] public class EveryNColumnsTransformation : CustomDataTransformation { private int n; public EveryNColumnsTransformation() { n = 2; } public int N { get { return n; } set { n = value; } } protected override DataTransformationConnection ConnectCore(ImportContext importContext, DataRowReader input) { PromptService promptService = importContext.PromptService; List<object> promptModels = new List<object>(); if (promptService.IsPromptingAllowed) { promptModels.Add(this); } //prompt for a value of N that the dialog sets directly on the promptmodel return DataTransformationConnection.CreateConnection( delegate { return new EveryNColumnsTransformationReader(input, N); }, promptModels); } public EveryNColumnsTransformation(SerializationInfo info, StreamingContext context) : base(info, context) { n = info.GetInt32("n"); } protected override void GetObjectData(SerializationInfo info, StreamingContext context) { base.GetObjectData(info, context); info.AddValue("n", n); } }
Version Information
Supported in: 14.3, 14.2, 14.1, 14.0, 12.5, 12.4, 12.3, 12.2, 12.1, 12.0, 11.8
See Also