Man page - tinysparql-query(1)

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tinysparql

Manual

TINYSPARQL-QUERY

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) { }"