Sample Usage of Entry Processor

To execute your code on the server side of the cache, you need to call the Invoke()method.

Method Description

Invoke() This method returns an instance of the IEntryProcessorResult for a single entry, and a ICollection of IEntryProcessorResult for a set of cache entries. It takes in multiple overloaded parameters:
Key or key[] of the cache entry
IEntryProcessor instance
ReadThru Provider name if you want to fetch the change
Read Option (None, ReadThru)
WriteThru Provider name if you want the updated change to be saved in the cache and data source
Write Option (None, WriteThru, WriteBehind)
List of arguments to be passed to the process

Method	Description
`Invoke()`	This method returns an instance of the `IEntryProcessorResult` for a single entry, and a ICollection of `IEntryProcessorResult` for a set of cache entries. It takes in multiple overloaded parameters: `Key` or `key[]` of the cache entry `IEntryProcessor` instance `ReadThru` Provider name if you want to fetch the change Read Option (`None`, `ReadThru`) `WriteThru` Provider name if you want the updated change to be saved in the cache and data source Write Option (`None, WriteThru, WriteBehind`) List of arguments to be passed to the process

The IEntryProcessorResult instance implements the following methods which aid you in using the result accordingly:

Member	Description
`Key`	Cache entry on which the `EntryProcessor` is executed.
`Value`	Resultant value after execution.
`IsSuccessful`	Flag to indicate operation success. If it returns false, the user can create their own logic to handle the `EntryProcessorException` thrown.
`Exception`	`EntryProcessorException`: If this occurs, no mutations will be made to the cache. Moreover, users can also specify in their logic the cases where they would want the exception to be thrown.

try
{
    //Get a new instance of sample Class implementing EntryProcessor interface.
    CustomEntryProcessor myProcessor = new CustomEntryProcessor();

    string[] keys = new string[] { "1", "5", "12", "15" };

    _cache.Insert(keys[0], "Value1");
    _cache.Insert(keys[1], "Value1");
    _cache.Insert(keys[2], "Value1");
    _cache.Insert(keys[3], "Value1");

    //Invoking the Entry processor on a single item.
    Object invokerVal = _cache.Invoke("1", myProcessor);

    //Invoking the Entry processor against a single item.
    invokerVal = _cache.Invoke("15", myProcessor);

    //Invoking the Entry processor against a set of items.
    ICollection retEntries = _cache.Invoke(keys, myProcessor);
}
catch (Exception ex)
{
    //handle exception
}

Sample Usage of Entry Processor

See Also