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RDF::QUERY::UTIL(3PM) - Linux man page online | Library functions

Miscellaneous utility functions to support work with RDF::Query.

Chapter
2017-01-04
RDF::Query::Util(3pm) User Contributed Perl Documentation RDF::Query::Util(3pm)

NAME

RDF::Query::Util - Miscellaneous utility functions to support work with RDF::Query.

VERSION

This document describes RDF::Query::Util version 2.918.

SYNOPSIS

use RDF::Query::Util; my $query = &RDF::Query::Util::cli_make_query; my $model = &RDF::Query::Util::cli_make_model; $query->execute( $model ); ...

FUNCTIONS

"cli_make_query_and_model" Returns a query object, model, and args HASHref based on the arguments in @ARGV. These arguments are parsed using "cli_make_query" and "make_model". "cli_make_query" Returns a RDF::Query object based on the arguments in @ARGV. These arguments are parsed using &cli_parse_args. If the -e flag is not present, the query will be loaded from a file named by the argument in @ARGV immediately following the final argument parsed by &cli_parse_args. "cli_make_model" Calls "make_model" with arguments from @ARGV, returning the constructed model object. "cli_make_model" will usually be called after cli_make_query, allowing a typical CLI invocation to look like `prog.pl [flags] [query file] [data files]`. "make_model ( @files )" Returns a model object suitable for use in a call to "$query->execute", loaded with RDF from files and/or URLs listed in @files. This model may be any of the supported models, but as currently implemented will be a RDF::Trine::Model object. "cli_parse_args" Parses CLI arguments from @ARGV and returns a HASH with the recognized key/values. The allowable arguments are listed below. "start_endpoint ( $model, $port )" Starts an SPARQL endpoint HTTP server on port $port. If called in list context, returns the PID and the actual port the server bound to. If called in scalar context, returns only the port.

COMMAND LINE ARGUMENTS

-e str Specifies the query string str. -l lang Specifies the query language lang used. This should be one of: sparql, sparql11, or rdql. -O Turns on optimization. -o Turns off optimization. -c class Specifies the perl class used to construct the query object. Defaults to "RDF::Query". -f Implies -c RDF::Query::Federate. -F loc Specifies the URL or path to a file loc which contains an RDF service description. The described service is used as an underlying triplestore for query answering. Implies -f. -E url Specifies the URL of a remove SPARQL endpoint to be used as a data source. The endpoint is used as an underlying triplestore for query answering. Implies -f. -s database-type Specifies the database type to use for the underlying data model. -u user -p password -m model

AUTHOR

Gregory Todd Williams <@cpan.org>
perl v5.24.1 2017-01-04 RDF::Query::Util(3pm)
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