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thinkphp/library/think/db/connector/Sqlite.php

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+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: liu21st <liu21st@gmail.com>
+// +----------------------------------------------------------------------
+
+namespace think\db\connector;
+
+use PDO;
+use think\db\Connection;
+
+/**
+ * Sqlite数据库驱动
+ */
+class Sqlite extends Connection
+{
+
+    protected $builder = '\\think\\db\\builder\\Sqlite';
+
+    /**
+     * 解析pdo连接的dsn信息
+     * @access protected
+     * @param array $config 连接信息
+     * @return string
+     */
+    protected function parseDsn($config)
+    {
+        $dsn = 'sqlite:' . $config['database'];
+        return $dsn;
+    }
+
+    /**
+     * 取得数据表的字段信息
+     * @access public
+     * @param string $tableName
+     * @return array
+     */
+    public function getFields($tableName)
+    {
+        list($tableName) = explode(' ', $tableName);
+        $sql             = 'PRAGMA table_info( ' . $tableName . ' )';
+
+        $pdo    = $this->query($sql, [], false, true);
+        $result = $pdo->fetchAll(PDO::FETCH_ASSOC);
+        $info   = [];
+        if ($result) {
+            foreach ($result as $key => $val) {
+                $val                = array_change_key_case($val);
+                $info[$val['name']] = [
+                    'name'    => $val['name'],
+                    'type'    => $val['type'],
+                    'notnull' => 1 === $val['notnull'],
+                    'default' => $val['dflt_value'],
+                    'primary' => '1' == $val['pk'],
+                    'autoinc' => '1' == $val['pk'],
+                ];
+            }
+        }
+        return $this->fieldCase($info);
+    }
+
+    /**
+     * 取得数据库的表信息
+     * @access public
+     * @param string $dbName
+     * @return array
+     */
+    public function getTables($dbName = '')
+    {
+
+        $sql = "SELECT name FROM sqlite_master WHERE type='table' "
+            . "UNION ALL SELECT name FROM sqlite_temp_master "
+            . "WHERE type='table' ORDER BY name";
+
+        $pdo    = $this->query($sql, [], false, true);
+        $result = $pdo->fetchAll(PDO::FETCH_ASSOC);
+        $info   = [];
+        foreach ($result as $key => $val) {
+            $info[$key] = current($val);
+        }
+        return $info;
+    }
+
+    /**
+     * SQL性能分析
+     * @access protected
+     * @param string $sql
+     * @return array
+     */
+    protected function getExplain($sql)
+    {
+        return [];
+    }
+
+    protected function supportSavepoint()
+    {
+        return true;
+    }
+}