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Is there a way to merge graphs? #402

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lecoqlibre opened this issue Jul 24, 2023 · 1 comment

lecoqlibre commented Jul 24, 2023

How to merge two RDF graphs in a single one?

Collaborator

zozlak commented Jul 24, 2023

As far as I know it can not be done in a really convenient way.
Two quick methods coming to my mind:

Serialize both graphs as n-triples, concatenate output strings and parse again.

foreach ($graph1->resources() as $res1) {
  $res2 = $graph2->resource($res1->getUri());
  foreach ($res->propertyUris() as $prop) {
    foreach ($res->all($prop) as $value) {
      $res2->add($prop, $value);
    }
  }
}

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