.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.ie \nF \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    nr % 0
.    rr F
.\}
.el \{\
.    de IX
..
.\}
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "RDF::Query::Algebra 3pm"
.TH RDF::Query::Algebra 3pm "2012-01-31" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
RDF::Query::Algebra \- Base class for Algebra expressions
.SH "VERSION"
.IX Header "VERSION"
This document describes RDF::Query::Algebra version 2.908.
.SH "METHODS"
.IX Header "METHODS"
.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 """referenced_blanks""" 4
.el .IP "\f(CWreferenced_blanks\fR" 4
.IX Item "referenced_blanks"
Returns a list of the blank node names used in this algebra expression.
.ie n .IP """referenced_functions""" 4
.el .IP "\f(CWreferenced_functions\fR" 4
.IX Item "referenced_functions"
Returns a list of the Function URIs used in this algebra expression.
.ie n .IP """check_duplicate_blanks""" 4
.el .IP "\f(CWcheck_duplicate_blanks\fR" 4
.IX Item "check_duplicate_blanks"
Returns true if blank nodes respect the \s-1SPARQL\s0 rule of no blank-label re-use
across BGPs, otherwise throws a RDF::Query::Error::QueryPatternError exception.
.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.
.ie n .IP """bind_variables ( \e%bound )""" 4
.el .IP "\f(CWbind_variables ( \e%bound )\fR" 4
.IX Item "bind_variables ( %bound )"
Returns a new algebra pattern with variables named in \f(CW%bound\fR replaced by their corresponding bound values.
.ie n .IP """is_solution_modifier""" 4
.el .IP "\f(CWis_solution_modifier\fR" 4
.IX Item "is_solution_modifier"
Returns true if this node is a solution modifier.
.ie n .IP """subpatterns_of_type ( $type [, $block] )""" 4
.el .IP "\f(CWsubpatterns_of_type ( $type [, $block] )\fR" 4
.IX Item "subpatterns_of_type ( $type [, $block] )"
Returns a list of Algebra patterns matching \f(CW$type\fR (tested with \f(CW\*(C`isa\*(C'\fR).
If \f(CW$block\fR is given, then matching stops descending a subtree if the current
node is of type \f(CW$block\fR, continuing matching on other subtrees.
This list includes the current algebra object if it matches \f(CW$type\fR, and is
generated in infix order.
.ie n .IP """from_sse ( $sse, \e%context )""" 4
.el .IP "\f(CWfrom_sse ( $sse, \e%context )\fR" 4
.IX Item "from_sse ( $sse, %context )"
Given an \s-1SSE\s0 serialization, returns the corresponding algebra expression.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.ie n .IP """triple ( $subj, $pred, $obj )""" 4
.el .IP "\f(CWtriple ( $subj, $pred, $obj )\fR" 4
.IX Item "triple ( $subj, $pred, $obj )"
Returns a RDF::Query::Algebra::Triple object with the supplied node objects.
.ie n .IP """bgp ( @triples )""" 4
.el .IP "\f(CWbgp ( @triples )\fR" 4
.IX Item "bgp ( @triples )"
Returns a RDF::Query::Algebra::BasicGraphPattern object with the supplied triples.
.ie n .IP """ggp ( @patterns )""" 4
.el .IP "\f(CWggp ( @patterns )\fR" 4
.IX Item "ggp ( @patterns )"
Returns a RDF::Query::Algebra::GroupGraphPattern object with the supplied algebra patterns.
.SH "AUTHOR"
.IX Header "AUTHOR"
.Vb 1
\& Gregory Todd Williams <gwilliams@cpan.org>
.Ve