117 lines
4.1 KiB
PHP
117 lines
4.1 KiB
PHP
<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse\Db\MySQL;
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class Statement extends \JKingWeb\Arsse\Db\AbstractStatement {
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use ExceptionBuilder;
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const BINDINGS = [
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self::T_INTEGER => "i",
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self::T_FLOAT => "d",
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self::T_DATETIME => "s",
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self::T_BINARY => "b",
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self::T_STRING => "s",
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self::T_BOOLEAN => "i",
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];
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protected $db;
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protected $st;
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protected $query;
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protected $packetSize;
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protected $values;
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protected $longs;
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protected $binds = "";
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public function __construct(\mysqli $db, string $query, array $bindings = [], int $packetSize = 4194304) {
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$this->db = $db;
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$this->query = $query;
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$this->packetSize = $packetSize;
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$this->retypeArray($bindings);
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}
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protected function prepare(string $query): bool {
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$this->st = $this->db->prepare($query);
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if (!$this->st) { // @codeCoverageIgnore
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list($excClass, $excMsg, $excData) = $this->buildEngineException($this->db->errno, $this->db->error); // @codeCoverageIgnore
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throw new $excClass($excMsg, $excData); // @codeCoverageIgnore
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}
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return true;
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}
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public function __destruct() {
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try {
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$this->st->close();
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} catch (\Throwable $e) { // @codeCoverageIgnore
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}
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unset($this->st);
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}
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public function runArray(array $values = []): \JKingWeb\Arsse\Db\Result {
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$this->st->reset();
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// clear normalized values
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$this->binds = "";
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$this->values = [];
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$this->longs = [];
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// prepare values and them all at once
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$this->bindValues($values);
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if ($this->values) {
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$this->st->bind_param($this->binds, ...$this->values);
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}
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// packetize any large values
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foreach ($this->longs as $pos => $data) {
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$this->st->send_long_data($pos, $data);
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unset($data);
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}
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// execute the statement
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$this->st->execute();
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// clear normalized values
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$this->binds = "";
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$this->values = [];
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$this->longs = [];
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// check for errors
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if ($this->st->sqlstate !== "00000") {
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if ($this->st->sqlstate === "HY000") {
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list($excClass, $excMsg, $excData) = $this->buildEngineException($this->st->errno, $this->st->error);
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} else {
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list($excClass, $excMsg, $excData) = $this->buildStandardException($this->st->sqlstate, $this->st->error);
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}
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throw new $excClass($excMsg, $excData);
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}
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// create a result-set instance
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$r = $this->st->get_result();
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$changes = $this->st->affected_rows;
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$lastId = $this->st->insert_id;
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return new Result($r, [$changes, $lastId], $this);
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}
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protected function bindValue($value, int $type, int $position): bool {
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// this is a bit of a hack: we collect values (and MySQL bind types) here so that we can take
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// advantage of the work done by bindValues() even though MySQL requires everything to be bound
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// all at once; we also segregate large values for later packetization
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if (($type == self::T_BINARY && !is_null($value)) || (is_string($value) && strlen($value) > $this->packetSize)) {
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$this->values[] = null;
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$this->longs[$position - 1] = $value;
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$this->binds .= "b";
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} else {
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$this->values[] = $value;
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$this->binds .= self::BINDINGS[$type];
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}
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return true;
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}
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public static function mungeQuery(string $query, array $types, ...$extraData): string {
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$query = explode("?", $query);
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$out = "";
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for ($b = 1; $b < sizeof($query); $b++) {
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$a = $b - 1;
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$mark = (($types[$a] ?? 0) % self::T_NOT_NULL == self::T_DATETIME) ? "cast(? as datetime(0))" : "?";
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$out .= $query[$a].$mark;
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}
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$out .= array_pop($query);
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return $out;
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}
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}
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