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rdf::query::util(3pm) [debian man page]

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 2.908.

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 <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31						     RDF::Query::Util(3pm)

Check Out this Related Man Page

RDF::Query::Algebra::GroupGraphPattern(3pm)		User Contributed Perl Documentation	       RDF::Query::Algebra::GroupGraphPattern(3pm)

NAME

       RDF::Query::Algebra::GroupGraphPattern - Algebra class for GroupGraphPattern patterns

VERSION

       This document describes RDF::Query::Algebra::GroupGraphPattern version 2.908.

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Query::Algebra class.

       "new ( @graph_patterns )"
	   Returns a new GroupGraphPattern structure.

       "construct_args"
	   Returns a list of arguments that, passed to this class' constructor, will produce a clone of this algebra pattern.

       "patterns"
	   Returns a list of the graph patterns in this GGP.

       "add_pattern"
	   Appends a new child pattern to the GGP.

       "quads"
	   Returns a list of the quads belonging to this GGP.

       "sse"
	   Returns the SSE string for this algebra expression.

       "explain"
	   Returns a string serialization of the algebra appropriate for display on the command line.

       "as_sparql"
	   Returns the SPARQL string for this algebra expression.

       "as_hash"
	   Returns the query as a nested set of plain data structures (no objects).

       "as_spin ( $model )"
	   Adds statements to the given model to represent this algebra object in the SPARQL Inferencing Notation (<http://www.spinrdf.org/>).

       "type"
	   Returns the type of this algebra expression.

       "referenced_variables"
	   Returns a list of the variable names used in this algebra expression.

       "potentially_bound"
	   Returns a list of the variable names used in this algebra expression that will bind values during execution.

       "definite_variables"
	   Returns a list of the variable names that will be bound after evaluating this algebra expression.

AUTHOR

	Gregory Todd Williams <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31			       RDF::Query::Algebra::GroupGraphPattern(3pm)
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