/// <summary>
/// Creates a cache item policy using the information obtained from the specified cache item policy configuration item.
/// </summary>
/// <param name="configurationItem">The cache item policy configuration item.</param>
/// <returns>
/// A new instance of <see cref="CacheItemPolicy"/> or null is the specified configuration is disabled.
/// </returns>
/// <exception cref="System.ArgumentNullException">configurationItem</exception>
public static CacheItemPolicy CreateCacheItemPolicy(ICacheItemPolicyConfigurationItem configurationItem)
{
if (null == configurationItem)
{
throw new ArgumentNullException("configurationItem");
}
if (false == configurationItem.Enabled)
{
return(null);
}
var policy = new CacheItemPolicy();
// Determine if an absolute or sliding expiration should be set.
if (configurationItem.SlidingExpiration == ObjectCache.NoSlidingExpiration)
{
// An absolute expiration is configured and will be set in the policy.
policy.AbsoluteExpiration = configurationItem.AbsoluteExpiration;
}
else
{
// A sliding expiration is configured and will be set in the policy.
policy.SlidingExpiration = configurationItem.SlidingExpiration;
}
return(policy);
}
/// <summary>
/// Determines the index of a specific item in the <see cref="T:System.Collections.Generic.IList`1" />.
/// </summary>
/// <param name="item">The object to locate in the <see cref="T:System.Collections.Generic.IList`1" />.</param>
/// <returns>
/// The index of <paramref name="item" /> if found in the list; otherwise, -1.
/// </returns>
/// <exception cref="System.InvalidOperationException"></exception>
public int IndexOf(ICacheItemPolicyConfigurationItem item)
{
var element = item as CacheItemPolicyConfigurationElement;
if (null != element)
{
return(BaseIndexOf(element));
}
throw new InvalidOperationException(string.Format("The item must be an instance of the {0} type.", typeof(CacheItemPolicyConfigurationElement).FullName));
}
/// <summary>
/// Adds an item to the <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <param name="item">The object to add to the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
/// <exception cref="System.InvalidOperationException"></exception>
public void Add(ICacheItemPolicyConfigurationItem item)
{
var element = item as CacheItemPolicyConfigurationElement;
if (null != element)
{
BaseAdd(element);
}
else
{
throw new InvalidOperationException(string.Format("The item must be an instance of the {0} type.", typeof(CacheItemPolicyConfigurationElement).FullName));
}
}
/// <summary>
/// Creates a cache item policy using the information obtained from the specified cache item policy configuration item.
/// </summary>
/// <param name="configurationItem">The cache item policy configuration item.</param>
/// <returns>
/// A new instance of <see cref="CacheItemPolicy"/> or null is the specified configuration is disabled.
/// </returns>
/// <exception cref="System.ArgumentNullException">configurationItem</exception>
public static CacheItemPolicy CreateCacheItemPolicy(ICacheItemPolicyConfigurationItem configurationItem)
{
if (null == configurationItem)
throw new ArgumentNullException("configurationItem");
if (false == configurationItem.Enabled)
return null;
var policy = new CacheItemPolicy();
// Determine if an absolute or sliding expiration should be set.
if (configurationItem.SlidingExpiration == ObjectCache.NoSlidingExpiration)
{
// An absolute expiration is configured and will be set in the policy.
policy.AbsoluteExpiration = configurationItem.AbsoluteExpiration;
}
else
{
// A sliding expiration is configured and will be set in the policy.
policy.SlidingExpiration = configurationItem.SlidingExpiration;
}
return policy;
}
/// <summary>
/// Inserts an item to the <see cref="T:System.Collections.Generic.IList`1" /> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which <paramref name="item" /> should be inserted.</param>
/// <param name="item">The object to insert into the <see cref="T:System.Collections.Generic.IList`1" />.</param>
/// <exception cref="System.NotImplementedException"></exception>
public void Insert(int index, ICacheItemPolicyConfigurationItem item)
{
// This member is intentionally not implemented.
throw new NotImplementedException();
}
/// <summary>
/// Removes the first occurrence of a specific object from the <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </summary>
/// <param name="item">The object to remove from the <see cref="T:System.Collections.Generic.ICollection`1" />.</param>
/// <returns>
/// true if <paramref name="item" /> was successfully removed from the <see cref="T:System.Collections.Generic.ICollection`1" />; otherwise, false. This method also returns false if <paramref name="item" /> is not found in the original <see cref="T:System.Collections.Generic.ICollection`1" />.
/// </returns>
/// <exception cref="System.NotImplementedException"></exception>
public bool Remove(ICacheItemPolicyConfigurationItem item)
{
// This member is intentionally not implemented.
throw new NotImplementedException();
}
