资讯频道 → 编程语言
阅读更多

7顶
0踩

编程语言

原创新闻 play! 1.0-stable4版发布，并提供完整论坛程序demo

2008-12-05 10:15 by 见习记者 fxsjy 评论(21) 有11955人浏览
play! Java Cache

声明：ITeye资讯文章的版权属于ITeye网站所有，严禁任何网站转载本文，否则必将追究法律责任！

play!为不喜欢传统JEE臃肿框架的程序员提供了一个敏捷的Web开发框架。
www.playframework.org


此次更新主要有：
1.自定义静态文件存放路径

So, to keep serving files from /public directory with the /public path, just add : 

GET   /public                staticDir:public



2. 邮件系统支持
You can now define Mailer in your application. A mailer is subclass of play.mvc.Mailer, where each public static method send an email.

Example : 
package notifiers;

import play.*;
import play.mvc.*;
import java.util.*;

public class Notifier extends Mailer {

   public static void welcome(User user) {
      setSubject("Welcome %s", user.name);
      addRecipient(user.email);
      addAttachment(Play.getFile("rules.pdf"));
      send(user);
   }

}


3. JPA重构

We have worked a lot on the JPA integration.

The JPA and JPAContext classes have been merged (JPAContext has been removed). Please replace the JPAContext.getEntityManager() call by JPA.getEntityManager().

A new find method is available in JPAModel : 

Users.find().all(); // All results
Users.find().one(); // The first result or null
Users.find().page(1, 10); // First page with page size at 10


You can still set your own query. Either with a shortcut : 
Users.find("email", email).one();
Users.find("email = ? and active = true", email).one();


Or by specifying a full JPQL query : 

Users.find("from User u where u.email = ?", email).one();
Users.find("select u from User u where u.email = ?", email).one();


You can now count using a query : 
Users.count(); // Count all user instances
Users.count("active", true); // Count all active users


Refresh and merge operation are directly available on JPAModel : 
User user = User.findById(2L);
user.refresh();

User mergedUser = Cache.get("user", User.class).merge();


You can delete using a query : 

Users.delete(); // delete all users
Users.delete("active", false); // delete all inactive users


You can still access the plain entityManager, with em() : 
public void delete() {
    em().delete(this);
}



4.编译时间优化


The Java compilation process has been optimized and is now faster (especially for large projects).

Moreover, Play! now keep a Bytecode cache for all compiled resources (Java sources and templates). We keep an MD5 hash of the source code with each Bytecode and always compare it before to use a cached Bytecode.

This option is activated by default. You can disable it with : 

play.bytecodeCache=false


in the application.conf file.


更多更新消息请看：


http://www.playframework.org/manual/contents/stable4


完整论坛程序下载：
http://www.playframework.org/download/samples/sample-forum.zip




  • 大小: 57.1 KB
7
顶
0
踩
评论 共 21 条 请登录后发表评论
1 楼 rockjava 2008-12-05 10:46
有一点像grails

发表评论

您还没有登录,请您登录后再发表评论

相关推荐

Global site tag (gtag.js) - Google Analytics