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ZeedFramework/library/Fit/Db/Model.php

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+<?php
+/**
+ * Playcool Project
+ * 
+ * LICENSE
+ * 
+ * http://www.playcool.com/license/ice
+ * 
+ * @category   ICE
+ * @package    ChangeMe
+ * @subpackage ChangeMe
+ * @copyright  Copyright (c) 2008 Zeed Technologies PRC Inc. (http://www.inews.com.cn)
+ * @author     xSharp ( GTalk: xSharp@gmail.com )
+ * @since      Jun 3, 2009
+ * @version    SVN: $Id: Model.php 4849 2010-01-07 10:06:07Z woody $
+ */
+
+//Zeed::packageClass(array(
+//        'Zend_Db_Table_Abstract',
+//        'Zend_Db_Adapter_Abstract',
+//        'Zend_Db_Adapter_Mysqli',
+//        'Zend_Db',
+//        'Zend_Config',
+//        'Zend_Db_Select',
+//        'Zend_Db_Profiler',
+//        'Zend_Db_Expr',
+//        'Zend_Db_Statement',
+//        'Zend_Db_Statement_Interface',
+//        'Zend_Db_Statement_Mysqli'), null, ZEED_IN_PRODUCTION);
+
+/**
+ * Abstract model class
+ */
+
+// 缓存表META数据
+// Zend_Db_Table_Abstract::setDefaultMetadataCache(Zeed_Cache::instance());
+
+class Fit_Db_Model extends Zend_Db_Table_Abstract
+{
+    /*
+     * The table name.
+     * 
+     * @var string
+     */
+    protected $_name;
+    
+    /**
+     * 数据库表前缀
+     * 
+     * @var string
+     */
+    protected $_prefix = '';
+    
+    /**
+     * 数据库连接实例缓存
+     * 
+     * @var array
+     */
+    protected static $instanceInternalCache = array();
+    
+    /**
+     * @param string $name Database table name
+     */
+    public function __construct($config = array())
+    {
+        /**
+         * Allow a scalar argument to be the Adapter object or Registry key.
+         * @see parent::__construct()
+         */
+        if (! is_array($config)) {
+            $config = array(
+                    self::ADAPTER => $config);
+        }
+        
+        if ($config) {
+            $this->setOptions($config);
+        }
+        
+        if (! is_object($this->_db)) {
+            $this->_db = Fit_Db::instance('default');
+        }
+    }
+    
+    protected function changeAdapter($name, $config = null)
+    {
+        $this->_db = Fit_Db::instance($name, $config);
+        
+        return $this;
+    }
+    
+    /**
+     * @param string $name
+     * @return Fit_Db_Model
+     */
+    public function setTable($name)
+    {
+        $this->_name = (string) $name;
+        
+        return $this;
+    }
+    
+    /**
+     * @return string
+     */
+    public function getTable()
+    {
+        return $this->_name;
+    }
+    
+    /**
+     * @return string
+     */
+    public function getPrefix()
+    {
+        return $this->_prefix;
+    }
+    
+    public function beginTransaction()
+    {
+        $this->_db->beginTransaction();
+        return true;
+    }
+    
+    public function commit()
+    {
+        $this->_db->commit();
+        return true;
+    }
+    
+    public function rollBack()
+    {
+        $this->_db->rollBack();
+        return true;
+    }
+    
+    /**
+     * 由字段的KEY-VAL数组构建WHERE条件(AND连接).
+     * 数组格式如下:
+     * <code>
+     * $rows = array('field1' = > '123', 'field2' => 'abc');
+     * </code>
+     * 该方法主要是用于兼容原Kohana中Database Query Builder的Where()
+     *
+     * @param Array|String $rows
+     * @return String
+     */
+    public function batchWhere($rows)
+    {
+        if (is_array($rows) && count($rows) > 0) {
+            $where = array();
+            foreach ($rows as $k => $v) {
+                $where[] = $this->getAdapter()->quoteIdentifier($k) . ' = \'' . (string) $v . '\'';
+            }
+            return implode(' AND ', $where);
+        } elseif (is_string($rows)) {
+            return $rows;
+        }
+        
+        return '';
+    }
+    
+    /**
+     * 快速获取指定MODEL的实例
+     * 
+     * @param string $name Model Name.
+     * @throws Zeed_Exception
+     * @return Fit_Db_Model
+     */
+    public static function getModel($name)
+    {
+        return self::_instance($name);
+    }
+    
+    /**
+     * MODEL单列模式
+     * 在子类中(注意注释中填写正确的返回值类型, 一般为类名):
+     * <code>
+     * public static function instance()
+     * {
+     *     return parent::_instance(__CLASS__);
+     * }
+     * </code>
+     * 
+     * @param string $model
+     * @throws Zeed_Exception
+     * @return Fit_Db_Model
+     */
+    protected static function _instance($model)
+    {
+        if (isset(self::$instanceInternalCache[$model]) && is_subclass_of(self::$instanceInternalCache[$model], __CLASS__)) {
+            return self::$instanceInternalCache[$model];
+        } elseif (class_exists($model)) {
+            self::$instanceInternalCache[$model] = new $model();
+            return self::$instanceInternalCache[$model];
+        }
+        
+        throw new Zeed_Exception('Model( ' . $model . ' ) not exists.');
+    }
+}
+
+// End ^ LF ^ UTF-8