Uniform access to and interchange between objects employing a plurality of access methods
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United States of America Patent
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-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Jan 2, 1998
filing date -
May 9, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Uniform access to and interchange between objects with use in any environment that supports interface composition through interface inheritance and implementation inheritance from a common base class is provided. Proxies are used to provide both cross-language and remote access to objects. The proxies and the local implementations for objects share a common set of interface base classes, so that the interface of a proxy for an object is indistinguishable from a similar interface of the actual implementation. Each proxy is taught how to deal with call paramters that are proxies of the other kind. A roster of language identifiers is developed, and a method is added to each object implementation which, when called, checks whether it matches the language that the object implementation is written in. If so, it returns a direct pointer to the object implementation. Common client coding can then be used to deal with both same language and cross-language calls.
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