/**
* Return the current statement or NULL if the stream is no longer valid.
*
* @return LibRDF_Statement The current statement on the iterator
* @access public
*/
public function current()
{
if ($this->isvalid and !librdf_stream_end($this->stream)) {
// the pointer returned is overwritten when the stream is
// advanced or closed, so make a copy of the statement
$ret = librdf_stream_get_object($this->stream);
if ($ret) {
return new LibRDF_Statement(librdf_new_statement_from_statement($ret));
} else {
throw new LibRDF_Error("Unable to get current statement");
}
} else {
return NULL;
}
}
/**
* Clone a Statement
*
* @return void
* @throws LibRDF_Error If unable to create a new statement
* @access public
*/
public function __clone()
{
$this->statement = librdf_new_statement_from_statement($this->statement);
if (!$this->statement) {
throw new LibRDF_Error("Unable to create new statement from statement");
}
}