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我注意到一个关于oo工具和so工具关系q且很吸引h的讨论正在Yahoo的论坛上q行?br />q些讨论阐明?jin)?f)什么我们要在eclipseq_上开发SOA的插Ӟq些由IBM,sybase{公司开发的插g昄优(sh)ZUML以及(qing)MDA上的?/p>
Stefan TilkovQ讨论参加者之一Q在之前的博客中已经讨论?jin)这个问题。另一位论坛参与者Lukas Barton引用?jin)他在之前写的关于MDA的文章，主要从插件角度讲一些OO和SO的区别?/p>
自从q个讨论看是以来Q一些事情已l改变(sh)(jin)Q但是我惌的是UML和MDA仍然没有从面向对象{成面向服务。那些UML和MDA的工具仍旧要求用户从对象的角度开始你的WSDLQXML SchemasQSOAP而不是其它的?/p>
当然你也已用UMLd建服务，也可以像被已l提到多ơ的那样Q用面向过E的技术例如：(x)CoBOL 或?PL/I 或者存储过E以?qing)异步消息机制。这样做的主要好处就是所有这些都是直接涉?qing)其本质。可是由于你SO和OO联系的太紧密地话Q你会(x)有所损失?/p>
对于软g开发，oo的概늚使用往往?x)带来的问题比它本n所能解决的更多。（采用对象Q过E，队列{来实现服务是没有问题的但我们应该采用别的方式来设计服务Q由于OO很清晰的映射?jin)业务功能，所以天生更适合于采用服务来建模Q设计和开发?/p>
软g工具需要提升其抽象的程度。MDA以及(qing)UML没有真正做到q点Q自从这两个东西让我们开始学?fn)如何重新采用对象方法的观点解释世界Q更加抽象的认识服务。我们需要是一套基于Contract-First的SO工具来开发SOA Q以面向服务为本质，而不理会(x)是否用OO来实玎ͼ(j)
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L着q些东西Q我用equals,print的组合都能实现的Q更可以嵌在代码本nQ何必又独立出来?/p>
到这里大家知道我惌什么，我想说的是TDD的重要性。生于XP的TDD,呵呵Q（不知道我们敏捷开发组的同僚们用不用）(j)Q这个TDD的思想是这L(fng)
我们不应该完成开发之后再d试Q这通常只是马后炮，试的本质上相当于设计文档，而不是花大量的时间去摆弄一个复杂的囑Ş化工P
你要直接在代码里拟画一个类。开始时候先Z些小功能模块~写试。很多情况下Q测试不能编译，因ؓ(f)cLw不存在?br />所以我们要做的是用最量的代码完成这个类Q以侉K过试Qƈ增加更多的测试。这里说一下，xp~程中，基本q程是这L(fng)Q?br />构?>~写试代码->~写代码->试Q而且~写试和编写代码都是增量式的，写一Ҏ(gu)一点，
在编写以后的代码中如果发现问题可以较块的q踪到问题的原因Q减回归错误的U错隑ֺ?br />Q回归让我想C(jin)回溯的算法，嘿嘿Q大学的噩梦Q?/p>
于是试框架来了(jin)Q?-JUnitQ衍生到XUnit,请开始用他们巴。那位写Taconite的Ryan Asleson_(d)(x)试?x)上瘄Q一开始接触JUnit的h都心(j)存疑?br />但是最后都?x)爱上他们。因为当你发现增加新的特性只需要几分钟的测试过E的时候，你就?x)意识到今天我们所说的?/p>
最后说一下JsUnit,据我看用的h很少Q说白了(jin)是Junit的JS版本Q自然也是RTF(Regression Testing Framework)的东东，Q很多用法都差不多，不过它是Z函数的，不是Ҏ(gu)?br />地址www.edwardh.com/jsunitQ弱q问一下，有h用这个来试ajax吗？嘿嘿Q?/p>
明天又要ȝ可恶的BPM文档?jin)?img height="20" src="http://www.aygfsteel.com/Emoticons/QQ/02.gif" width="20" border="0" />
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Environment Requied:
JDK, Tomcate, JDBC Driver, SQL Server2000. (For example: jdk1.5.0_04, Apache Tomcat 5.0.28)
(tng) (tng) (tng) (tng) (tng) (tng) 1) (tng)Set Class Path:
a) (tng) (tng) (tng) (tng) (tng) (tng) CATALINA_HOME
(tng) (tng) (tng) (tng) (tng) Path :-< Tomcat’s location>
(e.g.: - C:\Program Files\Apache Software Foundation\Tomcat 5.0)
b) (tng) (tng) (tng) (tng) (tng)
JAVA_HOME
(tng) (tng) Path :-< Java location>
(e.g.: - C:\Program Files\Java\jdk1.5.0_04)
c) (tng) (tng) (tng) (tng) (tng) JAVA_OPTS
(tng) (tng) (tng) (tng) (tng) Path :- -Xms256m -Xmx768m
2) (tng) (tng) (tng) (tng) (tng) Deploy Application:
a) (tng) (tng) (tng) (tng) (tng) (tng) Copy file “prweb.war?which is located “PegaV4Installation\PRPC INSTALL\PRPC_v0402_SP4_Software\PegaRULES\archivesNoApp?to ?lt;CATALINA_HOME>\webapps?
b) (tng) (tng) (tng) (tng) (tng) Restart Tomcat. If there is a new folder “prweb?in ?lt;CATALINA_HOME>\webapps? you are successful.
3) (tng) (tng) (tng) (tng) (tng) Upload Application Files:
a) (tng) (tng) (tng) (tng) (tng) (tng) Start Tomcat, Open the URL: http://localhost:8080/manager/html/, Click ?prweb?link which is in Applications Path.
b) (tng) (tng) (tng) (tng) (tng) Click hyperlink “Upload Application Files? open a new page “PegaRULES Upload Manager? Upload the file “PRPCV4.jar?which is localed “PegaV4Installation\PRPC INSTALL\PRPC_v0402_SP4_Software\PegaRULES\applicationJar\?
4) (tng) (tng) (tng) (tng) (tng) Create a Connection of Database:
a) (tng) (tng) (tng) (tng) (tng) (tng) Create a new registration of database server(IP:10.225.69.248) in SQL Server Enterprise Manager.
b) (tng) (tng) (tng) (tng) (tng) Import the DDL code which is in “PegaV4Installation\PRPC INSTALL\PRPC_v0402_SP4_Software\schema\DDL\mssql\mssql_install0402.sql?to SQL Server Query Analyzer Editor and execute it, it will create several PRPC table in SQL Server.
c) (tng) (tng) (tng) (tng) (tng) Copy the three JDBC driver file msbasse.jar, mssqlserver.jar, msutil.jar to ?lt;CATALINA_HOME>\common\lib?
d) (tng) (tng) (tng) (tng) (tng) Restart Tomcat.
5) (tng) (tng) (tng) (tng) (tng) Load PegaRULES Application Instances:
a) (tng) (tng) (tng) (tng) (tng) (tng) Open URL http://localhost:8080/prweb/admin/FirstSteps.html, Click hyperlink “Load PegaRULES Application Instances?
b) (tng) (tng) (tng) (tng) (tng) In the new page, set “Database Driver?as “MS SQL Server? set “URL or DSN?as “jdbc:microsoft:sqlserver://10.225.69.248:1433;SelectMethod=cursor;SendStringParametersAsUnicode=false? input Username and password and then submit. The installation is achieved until the progress complete
6) (tng) (tng) (tng) (tng) (tng) Connect to PegaRULES:
a) (tng) (tng) (tng) (tng) (tng) (tng) In previous page, Click “Connect to PegaRULES?or open URL http://localhost:8080/prweb/PRServlet, it will show a PegaRULES’s entry page, login with username:administrator@pega.com & password:install.
b) (tng) (tng) (tng) (tng) (tng) After that the PRPC will demand you to install some program, Please click ‘yes?to install all
c) (tng) (tng) (tng) (tng) (tng) The installation is OK.
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