Interface IKeyFilter

Allows user to filter the data before providing it to Mapper. Note: if filter is not applied than whole cache data will be mapped.

Namespace:

Assembly: Alachisoft.NCache.Runtime.dll

Syntax

public interface IKeyFilter

FilterKey(Object)

Map will be executed on specified key if ture is returned.

Declaration

bool FilterKey(object key)

Parameters

Type	Name	Description
System.Object	key	Key for filtering

Returns

Type	Description
System.Boolean	Returns if map has to be applied or not.

Examples

Following example illustrate the usage of FilterKey.

public class MapReduceKeyFilter : IKeyFilter
{
 public bool FilterKey(object key)
  {
   try
   {
       if (key.ToString().Contains("hungry"))
       {
           return true;
       }

   }
   catch (Exception exp)
   {
       //handle exception
   }
   return false;
  }
}