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Arsse/lib/Db/SQLite3/Result.php
J. King 9304f99032 Make result sets single-use; change savewepoint exceptions
- Result sets are now single-use; this is required for PDO drivers (PDO result sets are not rewindable)
- Change savepoint exceptions to be simple database exceptions; codes remain the same
2017-11-05 22:13:44 -05:00

84 lines
1.9 KiB
PHP

<?php
declare(strict_types=1);
namespace JKingWeb\Arsse\Db\SQLite3;
use JKingWeb\Arsse\Db\Exception;
class Result implements \JKingWeb\Arsse\Db\Result {
protected $st;
protected $set;
protected $pos = 0;
protected $cur = null;
protected $rows = 0;
protected $id = 0;
// actual public methods
public function getValue() {
$this->next();
if ($this->valid()) {
$keys = array_keys($this->cur);
return $this->cur[array_shift($keys)];
}
return null;
}
public function getRow() {
$this->next();
return ($this->valid() ? $this->cur : null);
}
public function getAll(): array {
return iterator_to_array($this, false);
}
public function changes() {
return $this->rows;
}
public function lastId() {
return $this->id;
}
// constructor/destructor
public function __construct(\SQLite3Result $result, array $changes = [0,0], Statement $statement = null) {
$this->st = $statement; //keeps the statement from being destroyed, invalidating the result set
$this->set = $result;
$this->rows = $changes[0];
$this->id = $changes[1];
}
public function __destruct() {
try {
$this->set->finalize();
} catch (\Throwable $e) { // @codeCoverageIgnore
}
unset($this->set);
}
// PHP iterator methods
public function valid() {
$this->cur = $this->set->fetchArray(\SQLITE3_ASSOC);
return ($this->cur !== false);
}
public function next() {
$this->cur = null;
$this->pos += 1;
}
public function current() {
return $this->cur;
}
public function key() {
return $this->pos;
}
public function rewind() {
if ($this->pos) {
throw new Exception("resultReused");
}
}
}