rdfproc(1)rdfproc(1)NAMErdfproc - Redland RDF processor utility
SYNOPSISrdfproc [options] store-name command arg...
EXAMPLErdfproc test parse http://planetrdf.com/guide/rss.rdf
rdfproc test print
rdfproc test serialize ntriples
DESCRIPTION
The rdfproc utility allows parsing, querying, manipulating and serial‐
izing of RDF content using the Redland RDF library. The store-name is
a Redland store name, typically a short identifier. The arguments to
command vary and are explained in section COMMANDS below.
OPTIONSrdfproc uses the usual GNU command line syntax, with long options
starting with two dashes (`-') if supported by the getopt_long func‐
tion. Otherwise the short options are only available.
-h, --help
Show a summary of the options.
-c, --contexts
Use a store with Redland contexts.
-n, --new
Make a new store, overwriting any existing one.
-o, --output FORMAT
Set the output FORMAT for sequences of triples, such as from a
search (find command) to a Redland serializer. At present the
alternatives are 'simple' (the default one if this option is
omitted), 'ntriples' or 'rdfxml'.
-p, --password
Read the storage option 'password' from standard input. Termi‐
nated by end of line ('\n') or end of file. This is equivalent
to setting it using -t or --storage-options but does not require
exposing the password in the argument list.
-r, --results FORMAT
Set the query results syntax format.
The exact list of formats depends on what libraptor(3) was built
with but is given correct in the usage message with -h.
-s, --storage TYPE
Set the Redland storage type (default 'hashes'). Alternatives
are 'memory' which is always present and '3store', 'file',
'mysql', 'sqlite', 'uri' when support for those is compiled in
If environment variable RDFPROC_STORAGE_TYPE is set, the storage
type given here will override it.
-t, --storage-options OPTIONS
Set options for the the Redland storage, default is "hash-
type='bdb',dir='.'" to match the default storage "hashes". For
storages types such as 'mysql' that need extra options this
would typically be something like "host='hostname',data‐
base='dbname',user='abc',password='pass'". If environment vari‐
able RDFPROC_STORAGE_OPTIONS is set, the storage options given
here will be applied afterwards.
-v, --version
Print the Redland version and exit.
COMMANDS
Where a node is allowed, such as NODE, SUBJECT, PREDICATE or OBJECT
below, simple heuristics are used to guess which are blank node identi‐
fiers, URIs or literals (to add a statement with a literal, use add-
typed). If the item starts with _: then it is assumed to be a blank
node identifier, otherwise if it matches something:// it is assumed to
be a URI, otherwise it is a literal. Literals are only allowed as
objects of statements and blank nodes are not allowed as predicates.
add SUBJECT PREDICATE OBJECT [CONTEXT]
Add the given triple to graph, in the optional Redland context
if the CONTEXT node is given.
add-typed SUBJECT PREDICATE OBJECT OBJECT-LANG OBJECT-URI [CONTEXT]
Add the triple with the datatyped literal object to the graph,
in the optional Redland context if CONTEXT is given.
arc SUBJECT OBJECT
arcs SUBJECT OBJECT
Show one node/all nodes that match triples (SUBJECT, ?, OBJECT)
arcs-in NODE
Show all properties of triples with NODE as a subject.
arcs-out NODE
Show all properties of triples with NODE as an object.
contains SUBJECT PREDICATE OBJECT
Check if the given triple is in the graph.
contexts
List all the contexts in the graph (if contexts are enabled).
find SUBJECT|- PREDICATE|- OBJECT|- [CONTEXT]
Find matching triples to the given statement where - stands for
a blank that matches any node. If CONTEXT is given, only search
for triples in that context node.
has-arc-in NODE ARC
Check that there is a triple with NODE as a subject and ARC as a
predicate.
has-arc-out NODE ARC
Check that there is a triple with NODE as a object and ARC as a
predicate.
parse URI|FILENAME [SYNTAX| [BASE URI]]
Parse syntax at URI into the graph using SYNTAX which can be one
of rdfxml (RDF/XML, default), ntriples, turtle, rss-tag-soup
(for all RSS and Atoms), grddl and guess to use content hints
and protocol information to work it out. (This list changes
faster than this manual page) If FILENAME is a existing file,
the appropriate URI will be generated for it.
parse-stream URI|FILENAME [SYNTAX [BASE URI [CONTEXT]]
Streaming parse syntax at URI into the graph using SYNTAX which
can be one of rdfxml (RDF/XML, default) or ntriples. If FILE‐
NAME is an existing file, the appropriate URI will be generated
for it. If the optional CONTEXT URI is given, the triples are
added to that context.
print Print the graph triples in a simple format showing context nodes
if present.
query NAME|- URI|- QUERY-STRING
Run QUERY-STRING query in language NAME returning variable bind‐
ings, a boolean or RDF graph depending on the query. Query lan‐
guage can be 'sparql' or 'rdql'.
remove SUBJECT PREDICATE OBJECT [CONTEXT]
Remove the given triple graph, in the optional Redland context
if CONTEXT is given.
remove-context CONTEXT
Remove all triples in the graph with the Redland context CON‐
TEXT.
serialize [SYNTAX [URI [MIME-TYPE]]]
Serializes the graph to a syntax with a particular ISYNTAX URI
or Internet Media Type/MIME Type. The default is RDF/XML (NAME
"rdfxml", MIME Type "application/rdf/xml") if none of the above
are given. Other alternatives are "ntriples" (no MIME Type).
source PREDICATE OBJECT
sources PREDICATE OBJECT
Show one node/all nodes that match triples (?, PREDICATE,
OBJECT)
target SUBJECT PREDICATE
targets SUBJECT PREDICATE
Show one node/all nodes that match triples (SUBJECT, PREDICATE,
?)
ENVIRONMENT
RDFPROC_STORAGE_OPTIONS can be set to provide storage options instead
of using the option -t, --storage-options OPTIONS. When both are
given, command options are applied last.
RDFPROC_STORAGE_TYPE can be set to provide a storage type instead of
using the option -s, --storage TYPE. When both are given, the storage
type from the command is used.
CONFORMING TO
RDF/XML Syntax (Revised), W3C Recommendation, http://www.w3.org/TR/rdf-
syntax-grammar/ ⟨http://www.w3.org/TR/rdf-syntax-grammar/⟩
N-Triples, in RDF Test Cases, Jan Grant and Dave Beckett (eds.) W3C
Recommendation, http://www.w3.org/TR/rdf-testcases/#ntriples
⟨http://www.w3.org/TR/rdf-testcases/#ntriples⟩
SEE ALSOredland(3), libraptor(3), rapper(1)AUTHOR
Dave Beckett - http://purl.org/net/dajobe/
⟨http://purl.org/net/dajobe/⟩
2007-02-17 rdfproc(1)
