tinysparql-query - Query to SPARQL endpoints.

NAME SYNOPSIS DESCRIPTION OPTIONS EXAMPLES SEE ALSO

NAME

tinysparql-query − Query to SPARQL endpoints.

SYNOPSIS

DESCRIPTION

This command allows running queries or updates on a SPARQL endpoint.

When the caller runs a query, the query is in the SPARQL language. This can be done two ways. Either by providing a file with the query or by providing a string with the sparql query.

The file argument can be either a local path or a URI. It also does not have to be an absolute path.

OPTIONS

−b, −−dbus−service=<service_name>

Connects to a SPARQL endpoint at a D−Bus name.

−d, −−database−path=<database_path>

Connects to a database by location in the filesystem.

−r, −−remote−service=<url>

Connects to a HTTP SPARQL endpoint.

−f, −−file=<file>

Use a file with SPARQL content to query or update.

−u, −−update

This has to be used with −−query. This tells "tinysparql query" to use the SPARQL update extensions so it knows it isn’t a regular data lookup request. So if your query is intended to change data in the database, this option is needed.

−a, −−arg=<parameter>:<value>

Provides an argument for a parameter declared in the SPARQL query string. This may be used with −−file, −−query or −−update. Multiple arguments may be provided for multiple parameters. Argument values are provided as a colon separated string containing 3 values: name, type and value. The name is the same as used in the query string, the value is the desired value, and the type is a single−character string defining the type:

• i: The value will describe an integer

• d: The value will describe a floating point number

• b: The value will describe a boolean

• s: The value will describe a plain string

EXAMPLES

Querying a D−Bus endpoint

$ tinysparql query −−dbus−service org.example.Endpoint "SELECT ('Hello World' AS ?str) {}"

Updating a database directly from a query in a file

$ tinysparql query −−database /tmp/db/ −−update −−file ./update.rq

Using −−arg to provide a arguments to query parameters

$ tinysparql query −b org.example.Endpoint \
−a name:s:"John" −a age:i:42 −a available:b:true \
"SELECT (˜name AS ?name) (˜age AS ?age) (˜available AS ?avail) { }"