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<?php
/** @license MIT
* Copyright 2017 J. King, Dustin Wilson et al.
* See LICENSE and AUTHORS files for details */
declare(strict_types=1);
namespace JKingWeb\Arsse\Db\PostgreSQL;
use JKingWeb\Arsse\Db\Exception;
use JKingWeb\Arsse\Db\ExceptionInput;
use JKingWeb\Arsse\Db\ExceptionTimeout;
class Statement extends \JKingWeb\Arsse\Db\AbstractStatement {
use Dispatch;
const BINDINGS = [
"integer" => "bigint",
"float" => "decimal",
"datetime" => "timestamp(0) without time zone",
"binary" => "bytea",
"string" => "text",
"boolean" => "smallint", // FIXME: using boolean leads to incompatibilities with versions of SQLite bundled prior to PHP 7.3
];
protected $db;
protected $in = [];
protected $qOriginal;
protected $qMunged;
protected $bindings;
public function __construct($db, string $query, array $bindings = []) {
$this->db = $db;
$this->qOriginal = $query;
$this->retypeArray($bindings);
}
public function retypeArray(array $bindings, bool $append = false): bool {
if ($append) {
return parent::retypeArray($bindings, $append);
} else {
$this->bindings = $bindings;
parent::retypeArray($bindings, $append);
$this->qMunged = self::mungeQuery($this->qOriginal, $this->types, true);
}
return true;
}
public function runArray(array $values = []): \JKingWeb\Arsse\Db\Result {
$this->in = [];
$this->bindValues($values);
$r = $this->dispatchQuery($this->qMunged, $this->in);
if (is_resource($r)) {
return new Result($this->db, $r);
} else {
list($excClass, $excMsg, $excData) = $r;
throw new $excClass($excMsg, $excData);
}
}
protected function bindValue($value, string $type, int $position): bool {
$this->in[] = $value;
return true;
}
protected static function mungeQuery(string $q, array $types, bool $mungeParamMarkers = true): string {
$q = explode("?", $q);
$out = "";
for ($b = 1; $b < sizeof($q); $b++) {
$a = $b - 1;
$mark = $mungeParamMarkers ? "\$$b" : "?";
$type = isset($types[$a]) ? "::".self::BINDINGS[$types[$a]] : "";
$out .= $q[$a].$mark.$type;
}
$out .= array_pop($q);
return $out;
}
}