公开(公告)号：US20050216670A1

公开(公告)日：2005-09-29

申请号：US11137458

申请日：2005-05-24

申请人： Robert Atkinson ,  Antony Williams ,  Craig Wittenberg ,  Srinivasa Koppolu ,  C. Hodges

发明人： Robert Atkinson ,  Antony Williams ,  Craig Wittenberg ,  Srinivasa Koppolu ,  C. Hodges

IPC分类号： G06F12/08 ,  G06F12/00

CPC分类号： G06F12/0875

摘要： A method and system for retrieving and maintaining presentation data in a presentation cache is provided. In a preferred embodiment, a presentation cache object provides a presentation cache with multiple cache entries. Each entry contains an indication of the format of the presentation data and the presentation data stored in that particular format. In addition, other information, such as the advisees of advisory connections for notification of cache updates, can be maintained. The presentation cache object responds to requests for retrieving source object data by returning presentation data cached within the presentation cache when it is available. In addition, the presentation cache object determines when it should delegate requests to the source object and when it can satisfy them on its own. The presentation cache object can return presentation data to a requesting client program even if the server program implementing the source object is unavailable or not running. The presentation cache object can also choose to persistently store its cache entries so that the presentation cache is maintained when the source object is closed. In addition, client programs can provide control over the frequency and subject of presentation data updates within the presentation cache.

摘要翻译： 提供了一种用于在呈现高速缓存中检索和维护呈现数据的方法和系统。 在优选实施例中，呈现高速缓存对象提供具有多个高速缓存条目的呈现缓存。 每个条目包含以该特定格式存储的呈现数据和呈现数据的格式的指示。 此外，可以保持其他信息，例如用于缓存更新通知的咨询连接的建议。 呈现缓存对象响应于通过在显示高速缓存中缓存的呈现数据可用时返回呈现数据来检索源对象数据。 此外，演示缓存对象确定何时应该将请求委托给源对象，何时可以自己满足它们。 即使实现源对象的服务器程序不可用或不运行，呈现缓存对象也可以将呈现数据返回给请求客户端程序。 演示缓存对象还可以选择持久存储其缓存条目，以便在源对象关闭时保持演示缓存。 此外，客户端程序可以提供对呈现数据更新的频率和主题的控制。