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2006年7月9日

JTA in Jboss (DataBase mysql)

1. mysql driver -> server\default\lib
2. jdbc connection datasource server/default/deploy/mysql-xa-ds.xml
<?xml version="1.0" encoding="UTF-8"?>
<datasources>
 <xa-datasource>
  <jndi-name>MySqlXADS</jndi-name>
  <xa-datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</xa-datasource-class>
  <xa-datasource-property name="Url">jdbc:mysql://127.0.0.1:3306/temp</xa-datasource-property>
  <xa-datasource-property name="User">root</xa-datasource-property>
  <xa-datasource-property name="Password">....</xa-datasource-property>
  <user-name>root</user-name>
  <password>.....</password>
  <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
  <metadata>
   <type-mapping>mySQL</type-mapping>
  </metadata>
 </xa-datasource>
</datasources>

3. server/default/conf/standardjbosscmp-jdbc.xml
<defaults>
      <datasource>java:/MySqlXADS</datasource>
      <datasource-mapping>mySQL</datasource-mapping>
....
....  
</defaults>

4. server/default/conf/jboss-service.xml
<mbean code="org.jboss.tm.XidFactory"
      name="jboss:service=XidFactory">
 //uncommented the line below...
      <attribute name="Pad">true</attribute>
   </mbean>

posted @ 2006-09-01 08:55 Jedi 阅读(1108) | 评论 (0) | 编辑 收藏

Axis Tips

1. 某个service的参数有复杂对象时，如果要用默认的beanmapping，记得这个对象要有的默认构造器(空参数构造器)，不然Axis在处理的时候会所有的字段都是同一个值..至于原因我没搞清楚-,-~~
2. 不要用List，尽量用数组!
ValueBean[] getValues() 
    { 
        ArrayList result = new ArrayList(); 
        return (ValueBean[]) result.toArray(); 
    }
上面的代码还是会出问题，要用iterator一个一个map过去
public class ValueHelper 
    { 
        public static ValueBean[] toArray(List values) 
        {
            ValueBean[] result = new ValueBean[values.size()]; 
            Iterator i = values.iterator(); 
            int i = 0; 
            while (i.hasNext()) 
            { 
                ValueBean value = (ValueBean) i.next(); 
                result[i++] = value; 
            } 
            return result; 
        } 
    } 
    ValueBean[] getValues() { 
        ArrayList result = new ArrayList();  
        return ValueHelper.toArray(result); 
    }
3. 要生成符合ws-i的web service最好用document/literal
<service name="MyWebRes" provider="java:RPC" style="document "use="literal">

posted @ 2006-08-15 09:22 Jedi 阅读(266) | 评论 (0) | 编辑 收藏

A good Http debug Utility - fiddler

http://www.fiddlertool.com/fiddler/ 
.net framework 1.1 needed

for firefox need some added configurat

menu->tools->preference/option->connection settings->bottom->

C:\Documents and Settings\jedikings\My Documents\Fiddler\Scripts\BrowserPAC.js -> reload

posted @ 2006-08-15 09:15 Jedi 阅读(237) | 评论 (0) | 编辑 收藏

Mozilla web service proxy~~ (for all Gecko-based browser)

var  proxy =   null ;
   function  getTest()  // test by the way amazon uses
{
    if (!proxy) {
        var listener = { 
        // gets called once the proxy has been instantiated
            onLoad: function (aProxy) 
            {
                proxy = aProxy;
                proxy.setListener(listener);
                requestTest();
            },
        // gets called if an error occurs
            onError: function (aError) 
            {
                alert(aError);
            },
        // callback function is hardcoded to {methodname}Callback in 1.4beta
            getInstanceByIDCallback : function (aresult) 
            {
                alert("enter callback");              
                //alert("a="+aresult.a+", b="+aresult.b);
            }
        };
        createProxy(listener);
    }
    else {
        requestTest();
    }
}
function createProxy(aCreationListener) 
{
    try {
        var factory = new WebServiceProxyFactory();
        factory.createProxyAsync("...wsdl location....", "binding name", "", true, aCreationListener);
    }
    catch (ex) {
        alert("test "+ ex);
    }
}

function  requestTest() 
{
    if (proxy) {
        netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
        
        /*
        // if complex object is the parameter
        var KeywordSearchRequest = new Object();        
        KeywordSearchRequest.page="1";
        KeywordSearchRequest.mode="books";
        KeywordSearchRequest.tag="webservices-20";
        KeywordSearchRequest.type="lite";
        KeywordSearchRequest.devtag="D2Z2KU2NWTOHI";
        KeywordSearchRequest.format="xml";
        KeywordSearchRequest.version="1.0";
        */
        proxy.getInstanceByID("id.....");
        alert("call complete!");
    }
    else {
        alert("Error: Proxy set up not complete!");
    }
}

用起来还是很简单，唯一要注意的是用Axis生成Web Service的时候记得在global configuration里面改一下
<parameter name="sendMultiRefs" value="false"/>

ie下的话也有一个webservice.htc，没仔细研究过..

posted @ 2006-07-11 12:13 Jedi 阅读(831) | 评论 (0) | 编辑 收藏

Reading notes -- Singleton pattern

public   class  Singleton {

     private   volatile   static  Singleton uniqueInstance;
     private  Singleton(){
        
    }
    
     public   static  Singleton getInstance(){
         if (uniqueInstance == null ){
             synchronized (Singleton. class ){
                 if (uniqueInstance == null ){
                    uniqueInstance  =   new  Singleton();
                }
            }
        }        
         return  uniqueInstance; 
    }

}

1. private constructor
2. static getInstance
3. syncronized..waste a lot of time
4. double check..modified syncronize, so time-waste might occurs only when first time the instance construct

posted @ 2006-07-09 12:42 Jedi 阅读(289) | 评论 (0) | 编辑 收藏