Index of values

Add a storage to the list of registered storages.

Adding a triple to the graph.

Adding a triple to the graph, curryfied form.

apply_namespaces ns uri return a pair (prefix, suffix) representing the given uri and using one of the namespaces ns, of the form (prefix, uri).

Execute the given ASK query.

See http://www.w3.org/TR/xpath-functions/#regex-syntax

Make a blank node id from a string.

Same as Rdf_dt.int but for booleans.

Parse a literal to get a boolean.

build_namespaces graph returns the list namespaces of the graph, as a list of pairs (prefix, uri) usable by Rdf_dot.apply_namespaces.

Comparison of two URIs, as usual.

Add the given string to the path of the given URI, using '/' as separator.

Execute the given CONSTRUCT query.

This function raises the Rdf_ds.Could_not_retrieve_graph exception.

Creating a log function.

Same as create_log_fun but also return a function to change the log level.

dataset graph returns a dataset with graph as default graph.

datatype v returns the URI of the datatype of the value.

Default date format.

datetime v returns a Datetime, if possible.

Parse a literal to get a datetime.

Execute the given DESCRIBE query.

dot_of_graph graph returns the Graphviz code to represent the given graph.

Same as Rdf_dot.dot_of_graph but return code to represent only the triples having the given URI as subject or object.

Dummy location.

Evaluate boolean expression.

Equality over URIs.

Raise a Rdf_dt.Error exception with the given error.

execute ~base dataset q executes the sparql query q on dataset, using base as base uri.

Same as Rdf_graph.Storage.find but only returns true if at least one triple of the graph matches the constraints.

Curryfied version of Rdf_graph.Storage.exists.

find ?sub ?pred ?obj g returns the list of triples matching the constraints given by the optional subject, predicate and object.

Same as Rdf_dt.int but for floats.

get_options name options returns the value associated to the option with the given name, in option list.

get_term solution varname returns the Rdf_node.node bound to varname in the solution.

Access to the graph name, as specified at its creation.

Fill a graph from a current state, a pair (global state, li counter), and a property node.

int v returns a Int value, trying to convert literal values to an integer.

iri base v returns a Iri value, ensure the given value is an URI.

is_bound solution varname returns whether the given variable name is bound in the solution.

Literal "false" with according type.

Literal "true" with according type.

Same as Rdf_dt.string, but languge tag is kept is present (i.e.

merge g1 g2 add triples from g2 to g1.

Creation of a literal.

Create a boolean literal with type uri from the given boolean.

Create a datetime literal with type uri from the given datetime d.

Create a double literal.

Create an integer literal.

The name of the storage, for example "mysql".

Get a Neturl.url from the given URI.

Forging a new, unique blank node id.

node_hash node returns an int64 identifiying (hopefully unically)) a given node.

Create a literal node from the given boolean.

Create a literal node from the given datetime.

Shortcut for Literal (mk_literal ~typ: Rdf_rdf.xsd_double float)

Shortcut for Literal (mk_literal ~typ: Rdf_rdf.xsd_integer int)

Shortcut for Literal (mk_literal ?typ ?lang string)

Shortcut for Uri (Rdf_uri.uri string).

Try to convert the given value to an Int or else to a Float, if the value is not already Int or Float.

Return the list of nodes appearing in object position.

objects_of g ~sub ~pred returns the list of nodes which are objects in triples with the specified subject and predicate.

of_literal lit returns a value from a literal node.

Get a Rdf_uri.uri from the given Neturl.url.

of_node node returns a value from an RDF node.

Creationg of the graph.

open_graph ~options uri_name creates a new graph.

This is the uri used as predicate to store namespaces in a graph.

Return a new URI with the path modified to parent path of the original URI.

Get the path part of the URI.

Return the list of nodes appearing in predicate position.

predicates_of g ~sub ~obj returns the list of nodes which are predicates in triples with the specified subject and object.

quote_str str returns the given string str between quotes, with correct literal string escapes.

Removing a triple from the graph.

Removing a triple from the graph, curryfied form.

Execute the given SELECT query.

Modify the fragment part of the URI.

simple_dataset graph returns a dataset with graph as default graph.

solution_fold f sol acc is f var1 term1 (f var2 term2 (...) acc), folding over the bindings of the solution.

solution_iter f solution calls f on each pair (varname, term) of the solution.

Implement the sorting order used in sparql order by clause: http://www.w3.org/TR/sparql11-query/#modOrderBy

From the given file and start and stop characters, read the content of the file as utf8, and return the corresponding location.

From the given utf8 string and start and stop characters, return the corresponding location.

Create a string from a URI.

string v returns a String value, converting any value to a string, except Err and Blank for which Err is returned.

string_literal v returns a pair (string, optional language tag) if v is String of Ltrl.

Get a string from a blank node id.

This function returns a message from the given error.

Return a human-readable message from the given error.

string_of_file filename returns the content of filename in the form of one string.

Create a string from the given RDF literal, using turtle syntax.

Return a string representing the given location.

Create a string for the given node, using RDF turtle syntax conventions.

Return a string to show the given value.

Return the list of nodes appearing in subject position.

subjects_of g ~pred ~obj returns the list of nodes which are subjects in triples with the specified predicate and object.

to_node v converts the given value to an RDF node.

Commit.

Rollback.

Start a transaction.

Translate group graph pattern as explained here: http://www.w3.org/TR/sparql11-query#convertGraphPattern

Create a URI from a string.

utf8_char_of_code n return the UTF8 character from a given codepoint.

utf8_char_of_index str n returns the utf8 character position corresponding to the given byte index n.

utf8_contains s1 s2 returns whether s1 contains s2.

utf8_count_nl str returns the number of newline \n characters found in the given UTF-8 string.

utf8_escape str escapes some characters by \n, \r, \b, \t, \quotes and \\ but do not escape \u.

utf8_index_of_char str n returns the position in byte of the nth character.

utf8_is_prefix s1 s2 returns whether s2 is prefix of s1.

utf8_is_suffix s1 s2 returns whether s2 is suffix of s1.

Return the number of bytes taken by a the first byte (as character) of a UTF-8 character.

utf8_strafter s1 s2 returns the substring after s2 in s1.

utf8_strbefore s1 s2 returns the substring before s2 in s1.

utf8_string_get_bol str returns the list of pairs (line number, char position) giving the position of beginning of each line in the given string.

utf8_string_length str returns the number of utf8 characters in str.

utf8_substr str pos l returns the substring of str from utf8 position pos to pos+l-1.

utf8_substr_pos s1 s2 returns Some n if s2 is found at position n in s1, starting to search from the beginning of s1.