public function EasyRdf_Collection::seek in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/easyrdf/easyrdf/lib/EasyRdf/Collection.php \EasyRdf_Collection::seek()

Seek to a specific position in the container

The first item is postion 1

Parameters

integer $position The position in the container to seek to:

Throws

OutOfBoundsException

File

vendor/easyrdf/easyrdf/lib/EasyRdf/Collection.php, line 73

Class

EasyRdf_Collection

Sub-class of EasyRdf_Resource that represents an RDF collection (rdf:List)

Code

public function seek($position) {
  if (is_int($position) and $position > 0) {
    list($node, $actual) = $this
      ->getCollectionNode($position);
    if ($actual === $position) {
      $this->position = $actual;
      $this->current = $node;
    }
    else {
      throw new OutOfBoundsException("Unable to seek to position {$position} in the collection");
    }
  }
  else {
    throw new InvalidArgumentException("Collection position must be a positive integer");
  }
}