如何在 Doctrine 中设置默认水合器? [英] How to set the default hydrator in Doctrine?

问题描述

我找不到在 Doctrine 中设置默认水合器的方法.它应该可用.对吧?

I can't find a way to set the default hydrator in Doctrine. It should be available. Right?

http://docs.doctrine-project.org/projects/doctrine1/en/latest/en/manual/data-hydrators.html#writing-hydration-method

以上文档页面说明了如何创建自定义水合器.这里的缺点是每次执行查询时都需要指定"水合器.

The above documentation page explains how to create a custom hydrator. The drawback here is that you need to "specify" the hydrator each and every time you execute a query.

推荐答案

我通过阅读 Chris Gutierrez 的评论并更改了一些东西来解决这个问题.

I figured this out by reading Chris Gutierrez's comment and changing some stuff.

首先，为 Doctrine_Query 定义一个扩展类.扩展构造函数来定义你自己的补水模式.

First, define an extension class for Doctrine_Query. Extend the constructor to define your own hydration mode.

class App_Doctrine_Query extends Doctrine_Query
{
    public function __construct(Doctrine_Connection $connection = null,
        Doctrine_Hydrator_Abstract $hydrator = null)
    {
        parent::__construct($connection, $hydrator);
        if ($hydrator === null) {
            $this->setHydrationMode(Doctrine::HYDRATE_ARRAY); // I use this one the most
        }
    }
}

然后，在您的引导程序中，告诉 Doctrine 您的新课程.

Then, in your bootstrap, tell Doctrine about your new class.

Doctrine_Manager::getInstance()->setAttribute(Doctrine_Core::ATTR_QUERY_CLASS, 'App_Doctrine_Query');  

Chris Gutierrez 为连接而不是全局定义了属性，但我有多个连接，我想为所有连接使用此默认值.

Chris Gutierrez defined the attribute for the connection instead of globally but I have more than one connection and I want to use this default for all of them.

现在您不必每次构建查询时都调用 Doctrine_Query::setHydrationMode().

Now you don't have to call Doctrine_Query::setHydrationMode() every time you build a query.

这里有更多信息
http://www.学说项目.org/projects/orm/1.2/docs/manual/configuration/en#configure-query-class

以下更改

我发现上面有问题.具体来说，执行Doctrine_Core::getTable('Model')->find(1)"之类的操作将始终返回水合数组，而不是对象.所以我对此做了一些改动，定义了自定义执行方法以在 Query 调用中使用.

I have found a problem with the above. Specifically, doing something like "Doctrine_Core::getTable('Model')->find(1)" will always return a hydrated array, not an object. So I have altered this a bit, defining custom execute methods for use in a Query call.

另外，我添加了内存释放代码.

Also, I added memory freeing code.

class App_Doctrine_Query extends Doctrine_Query
{
    public function rows($params = array(), $hydrationMode = null)
    {
        if ($hydrationMode === null)
            $hydrationMode = Doctrine_Core::HYDRATE_ARRAY;
        $results = parent::execute($params, $hydrationMode);
        $this->free(true);
        return $results;
    }

    public function row($params = array(), $hydrationMode = null)
    {
        if ($hydrationMode === null)
            $hydrationMode = Doctrine_Core::HYDRATE_ARRAY;
        $results = parent::fetchOne($params, $hydrationMode);
        $this->free(true);
        return $results;
    }
}

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