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Arsse/lib/Db/AbstractStatement.php
J. King 4a816f827b NCNv1 feed calls and other changes
- Implemented all but one feed-related function (it's more ofan item function)
- Fixed time conversion for input into SQL; dates in PM were previously wrong
- Added miscellaneous tentative functions to Database to help with peculiarities of NCNv1; these may change
- Tests to come soon
2017-05-18 23:03:33 -04:00

100 lines
No EOL
3.6 KiB
PHP

<?php
declare(strict_types=1);
namespace JKingWeb\Arsse\Db;
abstract class AbstractStatement implements Statement {
protected $types = [];
protected $isNullable = [];
abstract function runArray(array $values): Result;
abstract static function dateFormat(int $part = self::TS_BOTH): string;
public function run(...$values): Result {
return $this->runArray($values);
}
public function rebind(...$bindings): bool {
return $this->rebindArray($bindings);
}
public function rebindArray(array $bindings, bool $append = false): bool {
if(!$append) $this->types = [];
foreach($bindings as $binding) {
if(is_array($binding)) {
// recursively flatten any arrays, which may be provided for SET or IN() clauses
$this->rebindArray($binding, true);
} else {
$binding = trim(strtolower($binding));
if(strpos($binding, "strict ")===0) {
// "strict" types' values may never be null; null values will later be cast to the type specified
$this->isNullable[] = false;
$binding = substr($binding, 7);
} else {
$this->isNullable[] = true;
}
if(!array_key_exists($binding, self::TYPES)) throw new Exception("paramTypeInvalid", $binding);
$this->types[] = self::TYPES[$binding];
}
}
return true;
}
protected function cast($v, string $t, bool $nullable) {
switch($t) {
case "date":
if(is_null($v) && !$nullable) $v = 0;
return $this->formatDate($v, self::TS_DATE);
case "time":
if(is_null($v) && !$nullable) $v = 0;
return $this->formatDate($v, self::TS_TIME);
case "datetime":
if(is_null($v) && !$nullable) $v = 0;
return $this->formatDate($v, self::TS_BOTH);
case "null":
case "integer":
case "float":
case "binary":
case "string":
case "boolean":
if($t=="binary") $t = "string";
$value = $v;
try{
settype($value, $t);
} catch(\Throwable $e) {
// handle objects
$value = $v;
if($value instanceof \DateTimeInterface) {
$value = $value->getTimestamp();
if($t=="string") $value = $this->formatDate($value, self::TS_BOTH);
settype($value, $t);
} else {
$value = null;
settype($value, $t);
}
}
return $value;
default:
throw new Exception("paramTypeUnknown", $type);
}
}
protected function formatDate($date, int $part = self::TS_BOTH) {
// convert input to a Unix timestamp
if($date instanceof \DateTimeInterface) {
$time = $date->getTimestamp();
} else if(is_numeric($date)) {
$time = (int) $date;
} else if($date===null) {
return null;
} else if(is_string($date)) {
$time = strtotime($date);
if($time===false) return null;
} else if (is_bool($date)) {
return null;
} else {
$time = (int) $date;
}
// ISO 8601 with space in the middle instead of T.
return date($this->dateFormat($part), $time);
}
}