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<!DOCTYPE html>
<html lang="en">
<head>
<title>IApplication文档解析</title>
<meta charset="utf-8" />
<link rel="stylesheet" href="./theme/css/main.css" type="text/css" />
<link href="zsneoks.github.com/feeds/all.atom.xml" type="application/atom+xml" rel="alternate" title="木大 Atom Feed" />
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</head>
<body id="index" class="home">
<header id="banner" class="body">
<h1><a href=".">木大 </a></h1>
<nav><ul>
<li class="active"><a href="./category/Ganga.html">Ganga</a></li>
<li ><a href="./category/linux.html">linux</a></li>
<li ><a href="./category/关于.html">关于</a></li>
<li ><a href="./category/测试.html">测试</a></li>
<li ><a href="./category/物理.html">物理</a></li>
</ul></nav>
</header><!-- /#banner -->
<section id="content" class="body">
<article>
<header>
<h1 class="entry-title">
<a href="IApplication-htmlname.html" rel="bookmark"
title="Permalink to IApplication文档解析">IApplication文档解析</a></h1>
</header>
<div class="entry-content">
<footer class="post-info">
<abbr class="published" title="2012-06-25T00:00:00">
一 25 六月 2012
</abbr>
<address class="vcard author">
By <a class="url fn" href="./author/木大.html">木大</a>
</address>
<p>In <a href="./category/Ganga.html">Ganga</a>. </p>
<p>tags: <a href="./tag/ganga.html">ganga</a><a href="./tag/物理.html">物理</a></p>
</footer><!-- /.post-info -->
<p>类图如下：</p>
<p><img alt="Iapp类图" src="static/images/Iapp.png" title="Iapp类图" /></p>
<p>是所有app对象的基类。子类在GPI中给出程序逻辑并从功能上实现配置操作。app配置是作业提交的第一步。</p>
<p>实现配置方法的基本规则：</p>
<p>一般configure()和master_configure()方法会在作业提交的时候调用，所以原则上你</p>
<p>方法文档：</p>
<h3>1.master_configure(self)</h3>
<ul>
<li>配置app的共享（主要）方面。</li>
<li>调用一次，splitting情况下也会调用</li>
<li>返回元组(modified_flag, appconfig)
<ul>
<li> -appconfig(或appextra): 结构任意。由特定app运行时handler处理</li>
<li> -modified_flag: 如果configure()时对象self被改变了则为true</li>
</ul></li>
<li>如果方法未实现则忽略掉</li>
</ul>
<h3>2.config(self,master_aapconfig)</h3>
<ul>
<li>配置app的特定方面。与方法1有类似语义并且返回元组(modified_flag,appconfig).</li>
<li>具体子类必须实现，否则作业提交（submission)会失败。</li>
<li>参数master_configure是方法1的返回</li>
<li>splitting情况下每个子作业对象调用一次。即有多少子作业就会调用多少次。</li>
<li>无spliting情况下则会调用一次.</li>
<li>从Ganga4.0.x开始，方法1被忽略。</li>
</ul>
<h3>3.postprocess(self)</h3>
<ul>
<li>作业运行完后执行（即在报告作业状态为completed时）</li>
<li>默认未做任何事</li>
<li>可能抛出一个异常PostprocessStatusUpdate('faild').这种情况下作业状态是'failed'.但postprocess_failed()钩子不被调用。</li>
</ul>
<h3>4.postprocess_failed(self)</h3>
<ul>
<li>如字义作业报告为失败时调用。默认未做事</li>
</ul>
<h3>5.transion_update(self,new_status)</h3>
<ul>
<li>在parent作业改变状态之前调用</li>
</ul>
</div><!-- /.entry-content -->
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<h2>Comments !</h2>
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