Column Matcher

Table Scan can be customizied with user logic to match columns.

Such logic must be coded in a column matcher class which must implement the HPE.Ianus.Scripting.IColumnMatcher interface.

namespace HPE.Ianus.Scripting
{
    public interface IColumnMatcher
    {
        void Initialize(Environment env, Task task, Column column);

        bool Matches(object sourceValue);
    }
}

Therefore it must implement the method Match, that must return true when the column value meets the desired criteria.

The method Match receives the following input parameters:

Parameter	Description
sourceValue	Source value to be matched

The converter class can be coded in C# when embedded as script, and in any .NET language (including COBOL if available) when provided as DLL.

Note

Ianus provides data to the Match method exactly as it reads from the ADO resultset and uses the returned value according to ADO mechanisms.

Example 1

    public class MatchText : IColumnMatcher
    {
        LoggerFacade Log;
        public void Initialize(HPE.Ianus.Environment env, HPE.Ianus.Task task, Column column)
        {
            Log = task.Log;
        }

        public bool Matches(object value)
        {
            Log.Info($"Matching [{value}]");
            return value.ToString().Contains("A");
        }
    }