MapList

一直希望有个MapList这样的东西, 有k/v对,但是却是list形式存放的,可以排序.

List<String, String> maplist = new ArrayList<String, String>();

找过.没找到.今天写程序就突然想起来了,其实挺简单:

List<String[]> maplist = new ArrayList<String[]>();
String[] item = new String[2];

然后就是排序:

Arrays.sort(maplist, new Comparator(String[])
    {
  public int compare(String[] src, String des)
  {
    return src[0].compareTo(des[0]);
  }
    });

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It's Hard to Define, But I Know it When I See it…

xpath用法

有如下的xml文件nodes.xml :
<library>
  <book sum="22">helloworld
  </book>
</library>

提取 "helloworld" 这个字符串 :
        String filePath = "nodes.xml";
        InputSource inputSource = new InputSource(filePath);
        XPath xpath = XPathFactory.newInstance().newXPath();
        String expression = "/library/book[@sum='22']";
        String nodes = xpath.evaluate (expression, inputSource);

参考 : xpath语法, xpath validation , easy and efficient xml

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It's Hard to Define, But I Know it When I See it…

nsIHTMLEditor的获取

代码大概是这样的:

        final nsIWebBrowser webBrowser = browser.getWebBrowser();
        nsIInterfaceRequestor requestor = (nsIInterfaceRequestor) webBrowser.queryInterface(nsIInterfaceRequestor.NS_IINTERFACEREQUESTOR_IID );
        final nsIEditingSession session = (nsIEditingSession)requestor.getInterface(nsIEditingSession.NS_IEDITINGSESSION_IID);
        nsIDOMWindow window = webBrowser.getContentDOMWindow();
        session.makeWindowEditable (window, null, true);
        nsIEditor editor = session.getEditorForWindow(window);
        htmlEditor = (nsIHTMLEditor) editor.queryInterface(nsIHTMLEditor.NS_IHTMLEDITOR_IID);

本来是把他加在mozEditor的createPartControl里的, 这样运行出来editor一直是null.后来想到editor的获取应该在browser加载完document之后才能进行的罢? 于是就把代码加到ProgressListener的onCompleted()里面.运行,OK.
我觉得那个session应该也是在这个里面的,不过它在前面的代码里也能正确获取.
browser的加载一直都是异步的,新建线程?以前好像也有过一次因为加载顺序的原因而导致的错误.嗯..幸亏有个onCompleted方法

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It's Hard to Define, But I Know it When I See it…

比较2种技术

在javaeye上看到的,感觉分类还挺全面的:
- Cost, including Developing, Migration, Maintenance, Fee, Performance Tuning etc.
- Tool Support, including what tool/component could be used etc.
- Performance
- Extensibility
- Integrability
- Technical Support, including vendor support, 3d support
- Technical Resources
- Stability
- Challenge
- Technical Trend
- Migration
- Special Language Features
- Security
- Applying domain
- Technical Background

原来这样也可以写blog

通过gmail发送邮件到lakemove.____@blogger.com.真是个不错的想法 :D

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It's Hard to Define, But I Know it When I See it…

加载插件

俺这有三个plugin projects:
org.eclipse.atf.mozilla.ide.core
org.eclipse.atf.mozilla.ide.ui
org.jbpm.ui
其中org.jbpm.ui依赖于前2个plugins. 构建工程org.jbpm.ui不成功,然后在configure buildpath里把其它2个plugins引用进来,OK. 以RCP方式运行org.jbpm.ui的时候,报错说找不到那两个plugins里的类,郁闷了好久,后来在plugin.xml里把对那2个plugins 的depedencies加进来就OK了.从buildpath里删除之前加的内容也可以构建了.开始没仔细考虑这个问题,只胡乱的试.今天看下osgi的规范,感觉类加载还是满重要的方面,然后就从这个角度解决了.