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Class ExcludeColumnsTransformation

Represents a Spotfire.Dxp.Data.DataTransformation that uses an Spotfire.Dxp.Data.Transformations.ExpressionTransformation to exclude a set of columns.

Since

2.0

Hierarchy (view full)

ExpressionTransformationWrapper
- ExcludeColumnsTransformation

Index

Methods

Cast Equals GetHashCode ToString TryCast Equals

Default capability

constructor ColumnsToExclude Name TypeId AsExpressionTransformation Connect

Methods

Cast

Cast<T1, T2>(this, type): T1
Casts this object to the specified type. Throws error on failure.
Type Parameters
- T1
  The target type of the cast.
- T2
  The type of the object to cast.
Parameters
- this: T2
- type: TypeRef<T1>
  The type to cast to.
Returns T1
Inherited from ExpressionTransformationWrapper.Cast

Equals

Equals(obj): boolean
Determines whether the specified object is equal to the current object.
Parameters
- obj: any
  The object to compare with the current object.
Returns boolean
true if the specified object is equal to the current object; otherwise, false.

Inherited from ExpressionTransformationWrapper.Equals

GetHashCode

GetHashCode(): number
Serves as the default hash function.

Returns number
A hash code for the current object.

Inherited from ExpressionTransformationWrapper.GetHashCode

ToString

ToString(): string
Returns a string that represents the current object.

Returns string
A string that represents the current object.

Inherited from ExpressionTransformationWrapper.ToString

TryCast

TryCast<T1, T2>(this, type): null | T1
Casts this object to the specified type. Returns null on failure.
Type Parameters
- T1
  The target type of the cast.
- T2
  The type of the object to cast.
Parameters
- this: T2
- type: TypeRef<T1>
  The type to cast to.
Returns null | T1
Inherited from ExpressionTransformationWrapper.TryCast

`Static`Equals

Equals(objA, objB): boolean
Determines whether the specified object instances are considered equal.
Parameters
- objA: any
  The first object to compare.
- objB: any
  The second object to compare.
Returns boolean
true if the objects are considered equal; otherwise, false. If both objA and objB are null, the method returns true.

Inherited from ExpressionTransformationWrapper.Equals

Default capability

constructor

new ExcludeColumnsTransformation(columnsToExclude): ExcludeColumnsTransformation
Initializes a new instance of the Spotfire.Dxp.Data.Transformations.ExcludeColumnsTransformation class.
Parameters
- columnsToExclude: OrExplicit<System.Collections.Generic.IEnumerable<DataColumnSignature>>
  The columns to exclude.
Returns ExcludeColumnsTransformation
Since
2.0

Overrides ExpressionTransformationWrapper.constructor

ColumnsToExclude

get ColumnsToExclude(): System.Collections.Generic.IList<DataColumnSignature>
Gets the columns to exclude, as a modifiable list.

Returns System.Collections.Generic.IList<DataColumnSignature>
Since
2.0

Name

get Name(): string
Gets the display name of the transformation.

Returns string
Since
2.0

Inherited from ExpressionTransformationWrapper.Name

TypeId

get TypeId(): TypeIdentifier
Gets the type identifier for the data source.

Returns TypeIdentifier
Since
2.0

Inherited from ExpressionTransformationWrapper.TypeId

AsExpressionTransformation

AsExpressionTransformation(): ExpressionTransformation
Gets a copy of the underlying Spotfire.Dxp.Data.Transformations.ExpressionTransformation.

Returns ExpressionTransformation
A copy of the expression transformation.

Since
2.0

Inherited from ExpressionTransformationWrapper.AsExpressionTransformation

Connect

Connect(importContext, input): DataTransformationConnection
Connects to the input reader. A Spotfire.Dxp.Data.DataRowReader can then be retrieved from the Spotfire.Dxp.Data.DataTransformationConnection.
Parameters
- importContext: ImportContext
  The import context.
- input: DataRowReader
  The input reader.
Returns DataTransformationConnection
The connected transformation.

Since
2.0

Inherited from ExpressionTransformationWrapper.Connect