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Grails如何处理动态类重载

[英]How does grails handle dynamic class reloading

原文 2011-03-16 20:18:56 1 2 grails

grails如何处理动态类重载？

2 个解决方案

I did a little digging around, now this may not be perfect and will not include all the little details, however at a broad level I think this is what goes on: 我做了一些挖掘，现在这可能并不完美，并且不会包含所有小细节，但是从广义上讲，我认为这是发生了什么：

A thread is run say every X seconds, this thread detects if there have been any changes to Grails artifacts (domain,service,controller), custom artifacts can be included. 每隔X秒运行一个线程，该线程检测Grails构件（域，服务，控制器）是否发生任何更改，可以包含自定义构件。
If an artifact has been changed, then this bit of code is run which I think does the magic: 如果工件已更改，那么将运行以下代码，我认为这样做很神奇：
GroovyClassLoader gcl = new GroovyClassLoader(application.getClassLoader()); GroovyClassLoader gcl =新的GroovyClassLoader（application.getClassLoader（））; initialisePlugin(gcl.parseClass(DefaultGroovyMethods.getText(conn.getInputStream()))); initialisePlugin（gcl.parseClass（DefaultGroovyMethods.getText（conn.getInputStream（））））;

I got this by looking around DefaultGrailsPlugin which is part of grails core. 我是通过查看Grails核心的DefaultGrailsPlugin来了解此信息的。

Everything in Grails is treated as a plugin even the service,domain,controllers and so on. Grails中的所有内容都被视为插件，甚至服务，域，控制器等也是如此。

With a custom ClassLoader. 使用自定义的ClassLoader。 Probably to vague a question and requires too in-depth of an answer for a site like SO. 对于一个类似SO的网站，可能要掩盖一个问题，并且要求答案过于深入。 Might be better suited for the Grails mailing list. 可能更适合Grails邮件列表。