Class SchemaMap

Represents a mapping between two members in two dataflow rows. These mappings are available in a collection in the row and column mapper results, e.g. SchemaMaps, and refer to member indexes in the SchemaNodeList collection.

Note that this class is immutable.

Inheritance
Object
SchemaMap
Namespace: actionETL
Assembly: actionETL.dll
Syntax
public sealed class SchemaMap

Constructors

SchemaMap(Int32, Int32, Int32)

Initializes a new instance of the SchemaMap class, which contains a mapping between two members in two different dataflow rows.

Note that this class is immutable.

Declaration
public SchemaMap(int fromMapOrdinal, int fromIndex, int toIndex)
Parameters
Type Name Description
Int32 fromMapOrdinal

The 0-based ordinal number for the 'from' side of this mapping, i.e. a 0 if this is the first mapping for this 'from' member, a 1 if it is the second mapping for this 'from' member, etc. Always greater or equal to 0. This is used by e.g. TypeColumnCopier<TFrom, TTo> to do deep copies if needed.
Int32 fromIndex

The index for the 'from' side of the mapping.
Int32 toIndex

The index for the 'to' side of the mapping.

Properties

FromIndex

Gets the index for the 'from' side of this mapping.

Declaration
public int FromIndex { get; }
Property Value
Type Description
Int32

FromMapOrdinal

Gets the 0-based ordinal number for the 'from' side of this mapping, i.e. a 0 if this is the first mapping for this 'from' member, a 1 if it is the second mapping for this 'from' member, etc. Always greater or equal to 0. This is used by e.g. TypeColumnCopier<TFrom, TTo> to do deep copies if needed.

Declaration
public int FromMapOrdinal { get; }
Property Value
Type Description
Int32

ToIndex

Gets the index for the 'to' side of the mapping.

Declaration
public int ToIndex { get; }
Property Value
Type Description
Int32

Methods

Equals(Object)

Determines whether the specified Object, is equal to this instance.

Declaration
public override bool Equals(object obj)
Parameters
Type Name Description
Object obj

The Object to compare with this instance.
Returns
Type Description
Boolean

true if the specified Object is equal to this instance; otherwise, false.
Overrides

GetHashCode()

Returns a hash code for this instance.

Declaration
public override int GetHashCode()
Returns
Type Description
Int32

A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.

Overrides

ToString()

Returns a string that represents this instance.

Declaration
public override string ToString()
Returns
Type Description
String
Overrides

See Also

TypeRowMapper<TFrom, TTo>