get_langstring

Description:

[ Version ( since = "3.7" ) ]
public unowned string? get_langstring (int column, out string langtag, out long length)

Retrieves a string representation of the data in the current row in column.

If the string has language information (i.e. it is a `rdf:langString`](rdf-ontology.html#rdf:langString)), the language tag will be returned in the location provided through langtag. This language tag will typically be in a format conforming RFC 5646.

Parameters:

this	a `TrackerSparqlCursor`
column	column number to retrieve
langtag	language tag of the returned string, or null if the string has no language tag
length	length of the returned string

Returns:

a string which must not be freed. null is returned if the column is not in the `[0, n_columns]` range, or if the row/column refer to a nullable optional value in the result set.