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1. 发明授权

US5627997A Method and system for converting computer mail messages using an extensible set of conversion routines 失效
标题翻译：使用可扩展的转换程序集转换计算机邮件消息的方法和系统
公开(公告)号：US5627997A
公开(公告)日：1997-05-06
申请号：US254925
申请日：1994-06-07
申请人： Malcolm E. Pearson , Brian D. Bray
发明人： Malcolm E. Pearson , Brian D. Bray
IPC分类号： H04L12/58 , H04L29/06 , G06F13/00 , H04L12/54
CPC分类号： H04L12/5835 , H04L29/06 , H04L51/066 , H04L69/08
摘要： A method and system for converting the format of computer mail messages using a dynamic set of conversion routines is provided. In a preferred embodiment, a message format conversion engine uses an updatable registry to access an extensible set of available conversion routines. The registry contains selection information and invocation information for each of the available conversion routines. The selection information in each case describes the classes of messages that the conversion routine is potentially capable of converting. The invocation information comprises information necessary to invoke the conversion routine. When a message is submitted to the conversion engine, the engine reads the selection information stored in the registry. The engine then uses the read selection information to select one of the available conversion routines likely to be capable of converting the message. The engine reads the invocation information stored in the registry for the selected conversion routine and uses it to invoke the selected conversion routine to convert the format of the message. In a further preferred embodiment, the conversion engine invokes the selected conversion routine in two stages. The engine first invokes a query method of a selected conversion routine, which indicates whether the selected conversion routine is actually capable of converting the message. If the invocation of the query method indicates that the selected conversion routine is actually capable of converting the message, then the engine invokes a convert method of the selected conversion routine in order to convert the format of the message.
摘要翻译：提供了一种使用动态转换例程转换计算机邮件消息格式的方法和系统。在优选实施例中，消息格式转换引擎使用可更新注册表来访问可扩展的可用转换程序集合。注册表包含每个可用转换程序的选择信息和调用信息。每种情况下的选择信息都描述了转换程序有可能转换的消息类。调用信息包括调用转换程序所需的信息。当消息提交到转换引擎时，引擎读取存储在注册表中的选择信息。然后，引擎使用读选择信息来选择可能转换消息的可用转换例程之一。引擎读取存储在所选择的转换例程的注册表中的调用信息，并使用它来调用所选择的转换例程来转换消息的格式。在另一优选实施例中，转换引擎以两个阶段调用所选择的转换程序。引擎首先调用所选择的转换例程的查询方法，该方法指示所选择的转换例程是否实际上能够转换消息。如果查询方法的调用指示所选择的转换例程实际上能够转换消息，则引擎调用所选择的转换例程的转换方法，以便转换消息的格式。

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