Support CONSTRUCT/DESCRIBE/ASK in hdtsparql command line tool #27
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I wanted to perform a CONSTRUCT query against a HDT file but found that the hdtsparql command line tool only supports SELECT queries. I extended it to support CONSTRUCT, DESCRIBE and ASK queries as well.
This is very simplistic as the output formats are hardwired (N-Triples for CONSTRUCT/DESCRIBE, and a simple true/false string for ASK). It would be ideal to add a command line option for selecting the output format, but that is beyond the scope of this PR.