/// <summary>
/// Removes the entry for the specified key only if it is currently
/// mapped to the specified value.
/// </summary>
/// <param name="invocable">
/// The interface it extends.
/// </param>
/// <param name="key">
/// Key with which the specified value is associated.
/// </param>
/// <param name="value">
/// Value expected to be associated with the specified key.
/// </param>
/// <returns>
/// True if the value was removed.
/// </returns>
public static object Remove(this IInvocableCache invocable, object key, object value)
{
return(invocable.Invoke(key, CacheProcessors.Remove(value)));
}
/// <summary>
/// Returns the value to which the specified key is mapped, or
/// the defaultValue if this cache contains no mapping for the key.
/// </summary>
/// <param name="invocable">
/// The interface it extends.
/// </param>
/// <param name="key">
/// The key whose associated value is to be returned.
/// </param>
/// <param name="defaultValue">
/// The default value of the key.
/// </param>
/// <returns>
/// The value to which the specified key is mapped, or defaultValue
/// if this cache contains no mapping for the key.
/// </returns>
public static object GetOrDefault(this IInvocableCache invocable, object key, object defaultValue)
{
return(((Optional)invocable.Invoke(key, CacheProcessors.GetOrDefault())).OrElse(defaultValue));
}
/// <summary>
/// If the specified key is not already associated with a value
/// (or is mapped to null) associates it with the given value and
/// returns null, else returns the current value.
/// </summary>
/// <param name="invocable">
/// The interface it extends.
/// </param>
/// <param name="key">
/// Key with which the specified value is to be associated.
/// </param>
/// <param name="value">
/// Value to be associated with the specified key.
/// </param>
/// <returns>
/// The current value associated with the specified key, or
/// null if there was no mapping for the key.
/// </returns>
public static object InsertIfAbsent(this IInvocableCache invocable, object key, object value)
{
return(invocable.Invoke(key, CacheProcessors.InsertIfAbsent(value)));
}
/// <summary>
/// Replaces the entry for the specified key only if currently
/// mapped to the specified value.
/// </summary>
/// <param name="invocable">
/// The interface it extends.
/// </param>
/// <param name="key">
/// Key with which the specified value is associated.
/// </param>
/// <param name="oldValue">
/// Value expected to be associated with the specified key.
/// </param>
/// <param name="newValue">
/// Value to be associated with the specified key.
/// </param>
/// <returns>
/// True if the value was replaced.
/// </returns>
public static object Replace(this IInvocableCache invocable, object key, object oldValue, object newValue)
{
return(invocable.Invoke(key, CacheProcessors.Replace(oldValue, newValue)));
}
