Apparatus and method for live loading of version upgrades in a process control environment
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United States of America Patent
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Oct 9, 2012
Grant Date -
Sep 27, 2007
app pub date -
Mar 22, 2006
filing date -
Mar 22, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method includes comparing a first layout of data elements associated with a first version of a class and a second layout of data elements associated with a second version of the class. The first and second versions of the class are associated respectively with first and second versions of assembly code. The method also includes updating method information in an existing object instance associated with the first version of the class if the first and second layouts are identical. In addition, the method includes creating a new object instance associated with the second version of the class and transferring one or more values of one or more data elements from the existing object instance to the new object instance when the first and second layouts are not identical.
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