/// <summary>
/// Set Attributes for a specific key in cache
/// </summary>
/// <param name="key">The key for which Attributes are set in the <see cref="Cache"/>.</param>
/// <para><b>Note:</b> If exceptions are enabled through the <see cref="ExceptionsEnabled"/>
/// setting, this property throws exception incase of failure.</para>
/// </remarks>
/// <exception cref="ArgumentNullException"><paramref name="key"/> contains a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="key"/> is not serializable.</exception>
/// <example>The following example demonstrates how to set attributes for item in the <see cref="Cache"/>.
/// <code>
/// CacheItemAttributes attrib=new CacheItemAttributes();
/// attrib.AbsoluteExpiration=DateTime.Now.AddHours(10);
/// Cache cache = NCache.InitializeCache("myCache");
/// cache.SetAttributes("MyKey",attrib);
/// </code>
/// </example>
///
public virtual bool SetAttributes(string key, CacheItemAttributes attributes)
{
if (key == null) throw new ArgumentNullException();
if (attributes == null) throw new ArgumentNullException();
return _cacheImpl.SetAttributes(key, attributes);
}
public override bool SetAttributes(string key, CacheItemAttributes attributes)
{
AddAttributeCommand command = new AddAttributeCommand(key, attributes.AbsoluteExpiration);
Request request = _broker.CreateRequest(command);
_broker.ExecuteRequest(request);
CommandResponse res = request.Response;
res.ParseResponse();
return res.OperationWasuccessfull();
}
public OperationResult Touch(string key, long expirationTimeInSeconds)
{
if (string.IsNullOrEmpty(key))
ThrowInvalidArgumentsException();
OperationResult returnObject = new OperationResult();
try
{
CacheItemAttributes attributes = new CacheItemAttributes();
attributes.AbsoluteExpiration = CreateExpirationDate(expirationTimeInSeconds);
bool result = _cache.SetAttributes(key, attributes);
if (result)
returnObject = CreateReturnObject(Result.SUCCESS, null);
else
returnObject = CreateReturnObject(Result.ITEM_NOT_FOUND, null);
}
catch (Exception e)
{
ThrowCacheRuntimeException(e);
}
return returnObject;
}
public override bool SetAttributes(string key, CacheItemAttributes attributes)
{
if (key == null) throw new ArgumentNullException("key");
if (attributes == null) throw new ArgumentNullException("attributes");
ExpirationHint hint = DependencyHelper.GetExpirationHint(attributes.AbsoluteExpiration, Cache.NoSlidingExpiration);
return _nCache.AddExpirationHint(key, hint, new OperationContext(OperationContextFieldName.OperationType, OperationContextOperationType.CacheOperation));
}
public virtual bool SetAttributes(string key, CacheItemAttributes attribute)
{
return false;
}