International Business Machines Corporation

Andrew Lavelle

Claude N Warren, Jr

Michael J Ryan

Emile-Hugo Spir

Claude Warren

A method and system for comparing at least two structured data files. A computer polls at least one network device for data files. The computer determines a structural difference between a first data file and a second data file and creates at least one patch file based on the structural difference. The computer extracts at least one span from the at least one patch file, wherein the at least one span is defined by a starting point byte and a length measured in bytes and creates an ordered listing. The computer performs a lexer operation using the at least one span as a limiting criterion to limit an output of the lexer to statements that include the at least one span. The computer outputs the statements indicating changes in a configuration between said first and second data files.

Span limited lexical analysis

A computer-implemented method includes constructing an overall Bloom filter representing a set of legal parameter values of a plurality of parameters useable for querying one or more endpoints. In the overall Bloom filter, each parameter of the plurality of parameters is offset based on a respective unique identifier of the parameter. A first set of desired parameter values is determined corresponding to first desired data to be retrieved from a first endpoint of the one or more endpoints. Using a computer processor, a first query Bloom filter is constructed representing the first set of desired parameter values. A first Bloom filter search is performed of the first query Bloom filter against the overall Bloom filter. Responsive to not finding a match through the first Bloom filter search, it is opted not to query the first endpoint with the first set of desired parameter values.

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Knocknacarra, Ireland

Andrew Lavelle