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.IX Title "RDF::Query::Algebra::Service 3pm"
.TH RDF::Query::Algebra::Service 3pm "2021-01-05" "perl v5.32.0" "User Contributed Perl Documentation"
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.SH "NAME"
RDF::Query::Algebra::Service \- Algebra class for SERVICE (federation) patterns
.SH "VERSION"
.IX Header "VERSION"
This document describes RDF::Query::Algebra::Service version 2.918.
.SH "METHODS"
.IX Header "METHODS"
Beyond the methods documented below, this class inherits methods from the
RDF::Query::Algebra class.
.ie n .IP """new ( $endpoint, $pattern, $silent )""" 4
.el .IP "\f(CWnew ( $endpoint, $pattern, $silent )\fR" 4
.IX Item "new ( $endpoint, $pattern, $silent )"
Returns a new Service structure.
.ie n .IP """construct_args""" 4
.el .IP "\f(CWconstruct_args\fR" 4
.IX Item "construct_args"
Returns a list of arguments that, passed to this class' constructor,
will produce a clone of this algebra pattern.
.ie n .IP """endpoint""" 4
.el .IP "\f(CWendpoint\fR" 4
.IX Item "endpoint"
Returns the endpoint resource of the named graph expression.
.ie n .IP """pattern""" 4
.el .IP "\f(CWpattern\fR" 4
.IX Item "pattern"
Returns the graph pattern of the named graph expression.
.ie n .IP """silent""" 4
.el .IP "\f(CWsilent\fR" 4
.IX Item "silent"
Returns true if the service operation is to ignore errors during execution.
.ie n .IP """lhs""" 4
.el .IP "\f(CWlhs\fR" 4
.IX Item "lhs"
If the \s-1SERVCE\s0 operation uses a variable endpoint, then it is considered a binary
operator, executing the left-hand-side pattern first, and using results from it
to bind endpoint \s-1URL\s0 values to use in \s-1SERVICE\s0 evaluation.
.ie n .IP """sse""" 4
.el .IP "\f(CWsse\fR" 4
.IX Item "sse"
Returns the \s-1SSE\s0 string for this algebra expression.
.ie n .IP """as_sparql""" 4
.el .IP "\f(CWas_sparql\fR" 4
.IX Item "as_sparql"
Returns the \s-1SPARQL\s0 string for this algebra expression.
.ie n .IP """as_hash""" 4
.el .IP "\f(CWas_hash\fR" 4
.IX Item "as_hash"
Returns the query as a nested set of plain data structures (no objects).
.ie n .IP """type""" 4
.el .IP "\f(CWtype\fR" 4
.IX Item "type"
Returns the type of this algebra expression.
.ie n .IP """referenced_variables""" 4
.el .IP "\f(CWreferenced_variables\fR" 4
.IX Item "referenced_variables"
Returns a list of the variable names used in this algebra expression.
.ie n .IP """potentially_bound""" 4
.el .IP "\f(CWpotentially_bound\fR" 4
.IX Item "potentially_bound"
Returns a list of the variable names used in this algebra expression that will
bind values during execution.
.ie n .IP """definite_variables""" 4
.el .IP "\f(CWdefinite_variables\fR" 4
.IX Item "definite_variables"
Returns a list of the variable names that will be bound after evaluating this algebra expression.
.ie n .IP """qualify_uris ( \e%namespaces, $base_uri )""" 4
.el .IP "\f(CWqualify_uris ( \e%namespaces, $base_uri )\fR" 4
.IX Item "qualify_uris ( %namespaces, $base_uri )"
Returns a new algebra pattern where all referenced Resource nodes representing
QNames (ns:local) are qualified using the supplied \f(CW%namespaces\fR.
.SH "AUTHOR"
.IX Header "AUTHOR"
.Vb 1
\& Gregory Todd Williams <gwilliams@cpan.org>
.Ve