how do i delete node

[chetan...@gmail.com]

I want to delete the node created either through BNode or URIRef. How should I do that? Any help will be highly appreciated.

When I remove the triple, it only removes the class instantiation not the instance itself.

[Nicholas Car]

If you know the URI, do this:

# if you know what uri_x is

for s, p, o in g.triples((URIRef(uri_x), None, None)):

    g.remove((s, p, o))

This will iterate through every triple with uri_x as its subject and remove it from the graph.

Of you don’t know the URI, e.g. for a Blank Node, find it then delete:

for s, p, o in g.triples((URIRef(some_object_uri), URIRef(some_property_uri), None)):

    # o is now the Blank Node URI for the triple <some_object_uri> <some_property_uri> <o>

    # loop through all triples with o as subject and remove them

    for s2, p2, o2 in g.triples((o, None, None)):

        g.remove((s2, p2, o2))

You could also use a SPARQL DELETE query put to the graph via:

g.update((your_delete_query))

Nick

On 20 Feb 2020, at 1:02 am, chetan...@gmail.com wrote:

I want to delete the node created either through BNode or URIRef. How should I do that? Any help will be highly appreciated.

When I remove the triple, it only removes the class instantiation not the instance itself.

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Dr Nicholas Car Data Systems Architect SURROUND Australia Pty Ltd Address P.O. Box 86, Mawson, Canberra ACT 2607 Phone  +61 477 560 177 Email  nichol...@surroundaustralia.com Website  https://surroundaustralia.com Enhancing Intelligence Within Organisations delivering evidence that connects decisions to outcomes