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查询结果集中的数据类型可以自动转换成对应的PHP类型 #521

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查询结果集中的数据类型可以自动转换成对应的PHP类型 #521

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208 changes: 208 additions & 0 deletions src/db/connector/Sqlite.php
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
namespace think\db\connector;

use PDO;
use PDOStatement;
use think\db\PDOConnection;

/**
Expand Down Expand Up @@ -94,4 +95,211 @@ protected function supportSavepoint(): bool
{
return true;
}

protected function createPdo($dsn, $username, $password, $params)
{
return new SqliteTypedPDO($dsn, $username, $password, $params);
}

}
/**
* 查询结果集中的数据类型可以自动转换成对应的PHP类型
*/
class SqliteTypedPDO extends PDO
{
function __construct($dsn, $username = null, $password = null, $options = null)
{
parent::__construct($dsn, $username, $password, $options);
}
function prepare($query, $options = []) //: PDOStatement|bool
{
$stmt = parent::prepare($query, $options);
if ($stmt!=false && !($stmt instanceof SqlitePDOStatement)) {
return new SqlitePDOStatement($stmt);
}
return stmt;
}
function query($query, $fetchMode = null, $classname = null, $constructorArgs = null) //: PDOStatement|bool
{
if($fetchMode==PDO::FETCH_COLUMN || $fetchMode==PDO::FETCH_INTO){
$stmt = parent::query($query, $fetchMode, $classname);
}elseif($fetchMode==PDO::FETCH_CLASS){
$stmt = parent::query($query, $fetchMode, $classname, $constructorArgs);
}elseif($fetchMode==null){
$stmt = parent::query($query);
}
if ($stmt!=false && !($stmt instanceof SqlitePDOStatement)) {
return new SqlitePDOStatement($stmt);
}

return $stmt;
}
}

class SqlitePDOStatement extends PDOStatement
{
private PDOStatement $stmt;
private $fetchMode;
function __construct($stmt)
{
$this->stmt = $stmt;
//readonly
// $this->queryString = $stmt->queryString;
}
/**
* @var string
*/
// public $queryString;

function bindColumn($column, &$var, $type = PDO::PARAM_STR, $maxLength = 0, $driverOptions = null): bool
{
return $this->stmt->bindColumn($column, $var, $type, $maxLength, $driverOptions);
}

function bindParam($param, &$var, $type = PDO::PARAM_STR, $maxLength = 0, $driverOptions = null): bool
{
return $this->stmt->bindParam($param, $var, $type, $maxLength, $driverOptions);
}

function bindValue($param, $value, $type = PDO::PARAM_STR): bool
{
return $this->stmt->bindValue($param, $value, $type);
}

function closeCursor(): bool
{
return $this->stmt->closeCursor();
}

function columnCount(): int
{
return $this->stmt->columnCount();
}

function debugDumpParams() //: bool|null
{
return $this->stmt->debugDumpParams();
}

function errorCode() //: string|null
{
return $this->stmt->errorCode();
}

function errorInfo(): array
{
return $this->stmt->errorInfo();
}

function execute($params = null): bool
{
return $this->stmt->execute($params);
}

function fetch($mode = PDO::FETCH_ASSOC, $cursorOrientation = PDO::FETCH_ORI_NEXT, $cursorOffset = 0): mixed
{
$result = $this->stmt->fetch($mode, $cursorOrientation, $cursorOffset);
$columnCount = $this->stmt->columnCount();
if ($this->fetchMode == PDO::FETCH_ASSOC || $mode == PDO::FETCH_ASSOC) { //TODO:暂时支持一种
for ($i = 0; $i < $columnCount; $i++) {
$meta = $this->stmt->getColumnMeta($i);
if ($meta['native_type'] == 'integer' || (!empty($meta['sqlite:decl_type']) && $meta['sqlite:decl_type'] == 'INTEGER')) {
$result[$meta['name']] = intval($result[$meta['name']]);
}
}
}
return $result;
}


function fetchAll($mode = PDO::FETCH_ASSOC, $class = null, $constructorArgs = null): array
{
if ($mode == PDO::FETCH_COLUMN || $mode == PDO::FETCH_FUNC) {
$result = $this->stmt->fetchAll($mode, $class);
} elseif ($mode == PDO::FETCH_CLASS) {
$result = $this->stmt->fetchAll($mode, $class, $constructorArgs);
} else {
$result = $this->stmt->fetchAll($mode);
}
// $tableName = null;
// $pattern = '/\bSELECT\b.*?\bFROM\b\s+["`\'`]?(\w+)["`\'`]?/i';
// if (preg_match($pattern, trim($this->stmt->queryString), $matches)) {
// // 匹配成功，$matches[1] 包含提取出的表名
// $tableName = $matches[1];
// }
// var_dump($this->stmt->queryString);
// var_dump($result);
// if(!empty($tableName)){
// // die;
// }

if ($this->fetchMode == PDO::FETCH_ASSOC || $mode == PDO::FETCH_ASSOC) { //TODO:暂时支持一种
$columnCount = $this->stmt->columnCount();
for ($i = 0; $i < $columnCount; $i++) {
$meta = $this->stmt->getColumnMeta($i);
if ($meta['native_type'] == 'integer' || (!empty($meta['sqlite:decl_type']) && $meta['sqlite:decl_type'] == 'INTEGER')) {
foreach ($result as &$r) {
$r[$meta['name']] = intval($r[$meta['name']]);
}
}
}
}
// echo("===================\n");
return $result;
}

function fetchColumn($column = 0)
{
$result = $this->stmt->fetchColumn($column);
if ($result === false)
return $result;
$meta = $this->stmt->getColumnMeta(0);
if ($meta['native_type'] == 'integer' || (!empty($meta['sqlite:decl_type']) && $meta['sqlite:decl_type'] == 'INTEGER')) {
$result = intval($result);
}
return $result;
}

function fetchObject($class = "stdClass", $constructorArgs = []) //: bool|object
{
return $this->stmt->fetchObject($class, $constructorArgs);
}

function getAttribute($name): mixed
{
return $this->stmt->getAttribute($name);
}


function getColumnMeta($column) //: array|bool
{
return $this->stmt->getColumnMeta($column);
}

function getIterator(): \Iterator
{
return $this->stmt->getIterator();
}

function nextRowset(): bool
{
return $this->stmt->nextRowset();
}

function rowCount(): int
{
return $this->stmt->rowCount();
}

function setAttribute($attribute, $value): bool
{
return $this->stmt->setAttribute($attribute, $value);
}


function setFetchMode($mode = null, $class = null, $constructorArgs = null): bool
{
$this->fetchMode = $mode;
return $this->stmt->setFetchMode($mode, $class, $constructorArgs);
}
}