增加 optimize:schema 命令 用于生成 数据表字段信息缓存

helper.php

@@ -147,7 +147,7 @@ if (!function_exists('widget')) {
     /**
      * 渲染输出Widget
      * @param string    $name Widget名称
-     * @param array     $data 传人的参数
+     * @param array     $data 传入的参数
      * @return mixed
      */
     function widget($name, $data = [])

library/think/Console.php

@@ -44,6 +44,7 @@ class Console
         "think\\console\\command\\optimize\\Autoload",
         "think\\console\\command\\optimize\\Config",
         "think\\console\\command\\optimize\\Route",
+        "think\\console\\command\\optimize\\Schema",
     ];
 
     public function __construct($name = 'UNKNOWN', $version = 'UNKNOWN')
@@ -130,7 +131,7 @@ class Console
 
             $exitCode = $e->getCode();
             if (is_numeric($exitCode)) {
-                $exitCode = (int)$exitCode;
+                $exitCode = (int) $exitCode;
                 if (0 === $exitCode) {
                     $exitCode = 1;
                 }
@@ -221,7 +222,7 @@ class Console
      */
     public function setCatchExceptions($boolean)
     {
-        $this->catchExceptions = (bool)$boolean;
+        $this->catchExceptions = (bool) $boolean;
     }
 
     /**
@@ -231,7 +232,7 @@ class Console
      */
     public function setAutoExit($boolean)
     {
-        $this->autoExit = (bool)$boolean;
+        $this->autoExit = (bool) $boolean;
     }
 
     /**
@@ -399,7 +400,7 @@ class Console
         $expr          = preg_replace_callback('{([^:]+|)}', function ($matches) {
             return preg_quote($matches[1]) . '[^:]*';
         }, $namespace);
-        $namespaces    = preg_grep('{^' . $expr . '}', $allNamespaces);
+        $namespaces = preg_grep('{^' . $expr . '}', $allNamespaces);
 
         if (empty($namespaces)) {
             $message = sprintf('There are no commands defined in the "%s" namespace.', $namespace);
@@ -437,7 +438,7 @@ class Console
         $expr        = preg_replace_callback('{([^:]+|)}', function ($matches) {
             return preg_quote($matches[1]) . '[^:]*';
         }, $name);
-        $commands    = preg_grep('{^' . $expr . '}', $allCommands);
+        $commands = preg_grep('{^' . $expr . '}', $allCommands);
 
         if (empty($commands) || count(preg_grep('{^' . $expr . '$}', $commands)) < 1) {
             if (false !== $pos = strrpos($name, ':')) {

library/think/console/command/optimize/Schema.php

@@ -0,0 +1,53 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: yunwuxin <448901948@qq.com>
+// +----------------------------------------------------------------------
+namespace think\console\command\optimize;
+
+use think\console\Command;
+use think\console\Input;
+use think\console\input\Option;
+use think\console\Output;
+use think\Db;
+
+class Schema extends Command
+{
+    /** @var  Output */
+    protected $output;
+
+    protected function configure()
+    {
+        $this->setName('optimize:schema')
+            ->addOption('table', null, Option::VALUE_REQUIRED, 'Build table schema cache .')
+            ->setDescription('Build database schema cache.');
+    }
+
+    protected function execute(Input $input, Output $output)
+    {
+        if ($input->hasOption('table')) {
+            $tables[] = $input->getOption('table');
+        } else {
+            $tables = Db::getTables();
+        }
+
+        if (!is_dir(RUNTIME_PATH . 'schema')) {
+            @mkdir(RUNTIME_PATH . 'schema', 0755, true);
+        }
+
+        foreach ($tables as $table) {
+            $content = '<?php ' . PHP_EOL . 'return ';
+            $info    = Db::getFields($table);
+            $content .= var_export($info, true) . ';';
+            file_put_contents(RUNTIME_PATH . 'schema' . DS . $table . EXT, $content);
+        }
+
+        $output->writeln('<info>Succeed!</info>');
+    }
+
+}

library/think/db/Query.php

@@ -1375,7 +1375,12 @@ class Query
 
         list($guid) = explode(' ', $tableName);
         if (!isset(self::$info[$guid])) {
-            $info   = $this->connection->getFields($tableName);
+            // 读取缓存
+            if (is_file(RUNTIME_PATH . 'schema/' . $guid . '.php')) {
+                $info = include RUNTIME_PATH . 'schema/' . $guid . '.php';
+            } else {
+                $info = $this->connection->getFields($guid);
+            }
             $fields = array_keys($info);
             $bind   = $type   = [];
             foreach ($info as $key => $val) {

library/think/db/connector/Mysql.php

@@ -86,6 +86,7 @@ class Mysql extends Connection
      */
     public function getTables($dbName = '')
     {
+        $this->initConnect(true);
         $sql = !empty($dbName) ? 'SHOW TABLES FROM ' . $dbName : 'SHOW TABLES ';
         // 调试开始
         $this->debug(true);