The Laboratory

Connecting to Facebook Chat

2011-02-25T17:18:00.000+03:00

Some time ago, Facebook has provided a public XMPP service. It makes possible to connect to Facebook chat server via any XMPP client (e.g. Pidgin or Adium) and send messages to your Facebook contacts.

Adium already has a built-in support for Facebook Chat. You may add Facebook Chat to Pidgin as generic XMPP service.

To configure your jabber client use the following recommended settings:



Protocol: XMPP or Jabber

Username: 

Domain: chat.facebook.com

Jabber ID: @chat.facebook.com

Password:

Enter the following server info, as requested:



Port: 5222

Server: chat.facebook.com

Use SSL/TLS: no

Allow Plaintext Authentication: no

When you connect to Facebook account you'll see your Facebook friend groups in roster.
Friend groups (friend lists) can be edited only from Facebook site, not from the XMPP client.
Only your confirmed friends can contact you through Facebook Chat.

Currently, Facebook Chat does not support SSL and message encryption, but supports secured authentication using MD5.

For information about integraitng with Facebook Chat see here.

Installing GWT Development Plugin in FF3.6 on OpenSuse 11.2x64

2010-11-17T10:26:00.000+03:00

Compiling the plugin works for me on Arch Linux x86_64 or OpenSuse 11.2 x86_64 & FF36:

"
mkdir gwt-source
cd gwt-source
svn checkout http://google-web-toolkit.googlecode.com/svn/trunk/ trunk
svn checkout http://google-web-toolkit.googlecode.com/svn/plugin-sdks/ plugin-sdks
cd trunk/plugins/xpcom
export BROWSER=ff36
export DEFAULT_FIREFOX_LIBS=/usr/lib/xulrunner-devel-1.9.2/sdk/lib/
make clean
make
"

This shoulds create "gwt-dev-plugin.xpi" in prebuild directory, open it with FF and
may the force be with you.

Update: This reciept also works under Ubuntu 10.10 32bit (you don't need to export DEFAULT_FIREFOX_LIBS)

See original comment:
Issue 4141 - google-web-toolkit - Various compatibility problems with OOPHM Firefox plugin on Linux distros - Project Hosting on Google Code

How to Set JSON Response Data Locale for Facebook Graph API

2010-09-30T13:47:00.000+04:00

To make Facebook server return JSON responses in specified locale, you need to add parameter locale to the query, e.g.: https://graph.facebook.com/me?access_token=xxx&locale=en_US
The result is:

{

...

   "gender": "male",

   "meeting_for": [

      "Friendship"

   ],

   "relationship_status": "Married",

...

}

If you want to get results in russian, then add locale=ru_RU to query:
https://graph.facebook.com/me?access_token=xxx&locale=ru_RU
and you'll get result in russian (UTF-encoded):

{

...

   "gender": "\u043c\u0443\u0436\u0441\u043a\u043e\u0439",

   "meeting_for": [

      "\u0414\u0440\u0443\u0436\u0431\u0430"

   ],

   "relationship_status": "\u0416\u0435\u043d\u0430\u0442/\u0437\u0430\u043c\u0443\u0436\u0435\u043c",

  ...

}

Upgrading to Spring 3: "Unable to locate Spring NamespaceHandler" in JAR file built by Maven

2010-06-30T16:16:00.004+04:00

After upgrading to Spring 3 your may discover that your application packaged in JAR archive does not start any more throwing an exception like this:

"Unable to locate Spring NamespaceHandler for XML schema namespace[http://www.springframework.org/schema/tx]"

This happens when you include multiple Spring module dependencies in your pom.xml file and use Maven Shade or Assembly plugin to build a single JAR.
Since Spring can does not contain a single distribution jar (org.springframework:spring:jar), Spring namespace handlers, schema mappings and tooling information files are now present in multiple files with names:

META-INF/spring.handlers
META-INF/spring.schemas
META-INF/spring.tooling

In order to make it work in a single shaded JAR you need to merge contents of these files from different jars and place merged files into new JAR.

Hopefully, there is a configuration options in Maven Shade plugin to achieve this:

...

<build>

  <plugins>

    <plugin>

      <artifactid>maven-shade-plugin</artifactid>

      <version>1.3.3</version>

      <executions>

        <execution>

          <phase>package</phase>

          <goals>

            <goal>shade</goal>

          </goals>

          <configuration>

            <transformers>

              <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">

                <mainclass>com.example.Runner</mainclass>

              </transformer>

              <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">

                <resource>META-INF/spring.handlers</resource>

              </transformer>

              <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">

                <resource>META-INF/spring.schemas</resource>

              </transformer>

              <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">

                <resource>META-INF/spring.tooling</resource>

              </transformer>

            </transformers>

          </configuration>

        </execution>

      </executions>

    </plugin>

    ....

  </plugins>

</build>

Mac OS X Applications for Everyday. Keyboard Layout Switchers.

2009-11-19T13:04:00.003+03:00

After two years of Mac user experience, I'd like list the applications I use everyday.

I am Russian, so I need a to write the texts in other encoding than ISO. Under windows, there is nice tool called Punto Switcher. For long time there was no such tool for mac, except RuSwitcher by Alexey Proskuryakov. RuSwitcher works only on Tiger and does not work under Leopard.

Hopefully, guys from Yandex has ported PuntoSwitcher to Mac OS X (Leopard & Snow Leopard). It is still a beta but I have no problems using it.

Some of the Punto Switcher's features are:

Switching keyboard layout automatically or with a hot key.
Fix incorrect layout for selected text.
Mac and Windows layout support.

How to Lookup JBoss MBean Server from Spring (JMX)

2009-01-30T13:56:00.007+03:00

If you having problems accessing "mbeanServer" Spring-managed bean under JBoss Application server, try replacing following declaration in spring's application context configuration:

<context:mbean-server/>

with following one:

<bean id="mbeanServer" class="org.jboss.mx.util.MBeanServerLocator" factory-method="locateJBoss"/>

How to Use Spring from EJB3

2009-01-29T17:23:00.010+03:00

This is a short instruction how to inject a spring-managed bean into EJB3 component.

Read SpringFratamework's reference here: http://static.springframework.org/spring/docs/2.5.x/reference/ejb.html#ejb-implementation-ejb3

Place to ejb module's classpath a file beanRefContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>

 <bean id="myBeanFactory" class="org.springframework.context.support.ClassPathXmlApplicationContext">
  <constructor-arg value="myApplicationContext.xml"/>
 </bean>

</beans>

Create application context file named myApplicationContext.xml and define You beans there. Place this file to the ejb module's classpath.

Annotate your Stateless Session Bean:

@Stateless
@Interceptors(org.springframework.ejb.interceptor.SpringBeanAutowiringInterceptor.class)
public class MyFacadeBean implements MyFacade {

    @Autowired
    private MySpringComponent component;
    ...
    public void foo() {
        component.foo();//invocation 
    }
}

Deploy and test Your application.

How To Export Spring Managed Bean To JNDI

2009-01-27T18:20:00.011+03:00

Sometimes, it is necessary to export a spring managed bean to JNDI context. Here I want to show how do it.

In spring, there is a bean that provides a similar functionality for exporting to MBean server: MBeanExporter. Unfortunately, there is no standard JNDI bean exporter implementation in spring (current version is 2.5.6) - (Why?).
But it's easy to write it youself:

package com.example.spring.jndi.export;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jndi.JndiTemplate;

public class JndiExporter implements InitializingBean, DisposableBean {

 private String jndiName;

 private Object bean;

 private final JndiTemplate jndiTemplate = new JndiTemplate();

 public String getJndiName() {
  return jndiName;
 }

 public void setJndiName(String jndiName) {

  this.jndiName = jndiName;
 }

 public Object getBean() {
  return bean;
 }

 public void setBean(Object bean) {
  this.bean = bean;
 }


 public void afterPropertiesSet() throws Exception {
  jndiTemplate.bind(jndiName, bean);
 }

 public void destroy() throws Exception {
  if (bean != null && jndiName != null && bean == jndiTemplate.lookup(jndiName)) {
   jndiTemplate.unbind(jndiName);
  }
 }
}

Add following fragment to spring configuration file:

<bean id="myBean" class="com.example.MyBean"/>

<bean class="com.example.spring.jndi.export.JndiExporter">
       <property name="bean" ref="myBean" />
       <property name="jndiName" value="MyJNDIName"/>
</bean>

Don't forget to make your bean serializable by implementing java.io.Serializable interface.
Now we can lookup exported bean by adding to the spring config fil:

<jee:jndi-lookup id="myJndiBean" jndi-name="MyJNDIName" proxy-interface="com.example.IMyBean" lookup-on-startup="false"/>

That's all, folks!

Use BigDecimals for Financial Calculations: One More Example

2009-01-02T12:36:00.004+03:00

Recently I was asked about the preferred data type in java application dealing with financial data. I suggest using of BigDecimal and here is the example why. Let's perform following arithmetic operations over double values, double values with strictfp mode enabled and over BigDecimals.

Expression is: "0.999/9 - 0.112"
Expected result is: "-0.001"

Java code:

import java.math.BigDecimal;

public class FloationPointTest {

 public strictfp static void  testStrictfp() {
  System.out.println("strictfp: 0.999/9-0.112 = " + (0.999/9-0.112));
 }

 public static void main(String ... args) {
  System.out.println("double: 0.999/9-0.112 = " + (0.999/9-0.112));
  testStrictfp();
  System.out.println("BigDecimal: 0.999/9-0.112 = " + (new BigDecimal("0.999").divide(new BigDecimal("9")).subtract(new BigDecimal("0.112"))));
 }
}

Program output:

double: 0.999/9-0.112 = -0.0010000000000000009
strictfp: 0.999/9-0.112 = -0.0010000000000000009
BigDecimal: 0.999/9-0.112 = -0.001

We see that only operations with BigDecimal does not lead to the lost of precision. Performing operation over values of type double even in strictfp mode may loose accuracy. It is not acceptable for financial calculations in the days of Global financial crisis.

Proxy Method Resolving Order

2008-12-02T13:53:00.015+03:00

I noticed interesting behavior of method resolving order, which reflects interface order in java.lang.reflect.Proxy.newProxyInstance(...) call. It fact, it is described in Sun's java guide: Dynamic Proxy Classes: Methods Duplicated in Multiple Proxy Interfaces

Supose, there are two interfaces (A and B) with same signature and we have created a proxy that implements this interface in order {A,B}.

When we cast a proxy to class A and invoke it's method, the InvocationHandler says that we invoke a method from interface A (as expected).

But when we cast a proxy to class B and invoke it's method, the InvocationHandler says that we invoke a method from interface A again! Here I'd expect the InvocationHandler will say that we invoking a method of interface B and it's strange for me.

Order of appearing interfaces in proxy instance factory method does matter. Following program demonstrates it:

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;

public class ProxyMethod {

 interface A {
  void doSomething();
 }

 interface B {
  void doSomething();
 }

 static class EchoHandler implements InvocationHandler {

  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
   System.out.println("method = " + method);
   return null;
  }
 }

 public static void main(String[] args) {
  Object proxy1 = Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
    new Class[]{B.class, A.class},// The difference
    new EchoHandler());

  Object proxy2 = Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
    new Class[]{A.class, B.class},// The difference
    new EchoHandler());

  System.out.println("\nproxy1 intfs = " + Arrays.asList(proxy1.getClass().getInterfaces()));
  ((A) proxy1).doSomething();
  ((B) proxy1).doSomething();

  System.out.println("\nproxy2 intfs = " + Arrays.asList(proxy2.getClass().getInterfaces()));
  ((A) proxy2).doSomething();
  ((B) proxy2).doSomething();
 }
}

Returns following result:


proxy1 intfs = [interface ProxyMethod$B, interface ProxyMethod$A]
method = public abstract void ProxyMethod$B.doSomething()
method = public abstract void ProxyMethod$B.doSomething()

proxy2 intfs = [interface ProxyMethod$A, interface ProxyMethod$B]
method = public abstract void ProxyMethod$A.doSomething()
method = public abstract void ProxyMethod$A.doSomething()

This behavior allows to build object wrapper as dynamic proxies easily. Interface of the object being wrapped should be passed first to the proxy factory method. So, if methods of the wrapped object's interface is passed to the invocation handler - just invoke them on a wrapped objects. Other methods should be handled differently by invocation handler.

WebService Authentication under JBoss

2008-03-26T10:21:00.026+03:00

In my business project there is a need to check declarative security within EJB3 Session beans exposed as WebServices. The project is deployed under JBoss AS 4.0.5.GA with JBossWS 1.2.0.SP1. After brief investigation, a quick solution was found.

HTTP BASIC Auhtentication with EJB3 Endpoints

Axis client provides HTTP BASIC authentication when invoking web services (see previous article). So, it should be some way to enable it on server side.

For EJB web service endpoints, JBossWS generates and deploys web application, so Session Beans are mapped to Servlets.

Let's look at the example of SLSB exposed as WebService (class HelloIntf, containing missing here @WebService annotations, is generated from WSDL and not listed here):

@javax.ejb.Local(HelloIntf.class)
@javax.ejb.Stateless(name = "HelloPort")
@javax.jws.WebService(endpointInterface = "HelloIntf")
@TransactionManagement
@DeclareRoles({"foo","bar"})
// jboss specific
@org.jboss.ws.annotation.WebContext(
    contextRoot = "/services", 
    urlPattern = "/hello", 
    authMethod = "BASIC")
public class HelloBean implements HelloIntf {

    @javax.annotation.Resource
    private SessionContext ctx;

    @javax.annotation.security.RolesAllowed({"foo","bar"})
    public String sayHello() {
        return "Hello, " + ctx.getCallerPrincipal();
    }

}

Defined bean will be deployed as http://localhost:8080/services/hello.
Actually, JBossWS generates web.xml by processing annotations. In web.xml following code will be added:

<security-constraint>
 <web-resource-collection>
 <web-resource-name>HelloPort</web-resource-name>
 <url-pattern>/hello</url-pattern>
 <http-method>GET</http-method>
 <http-method>POST</http-method>
 </web-resource-collection>
 <auth-constraint>
 <role-name>*</role-name>
 </auth-constraint>
 </security-constraint>
 <login-config>
 <auth-method>BASIC</auth-method>
 <realm-name>EJBServiceEndpointServlet Realm</realm-name>
 </login-config>

Unfortunately, the realn name is predefined (hardcoded in JBossWS code) and can not be changed (in JBossWS 1.2.0.SP1), so, we may configure default application-policy called "other" in login-config.xml to meet our needs or to add new application-policy element with name="EJBServiceEndpointServlet Realm" (but the second solution does not works by unknown reason).

MacOS Applications

2008-03-22T12:19:00.019+03:00

As a new Mac user, I was faced to choose and install applications to make my work (and entertainment) more pleasurable.

One of the most important reason when choosing applications to install is to prefer Free and Open Source than Commercial ones. Then comes size and performance. All

Localization

Is my native language is Russian, I need a to write the texts with other encoding than ISO. Here comes RuSwitcher by Alexey Proskuryakov. It is similar that PuntoSwitcher for Windows.

Web

Web Browser

I desided to stay with Safari as it's really fast web browser.
But there are a number of plugins which make work with Safari more comfortable.

SafariBlock

The SafariBlock plugin is absolutely necessary to block unwanted ads. - does not work in Safari 4 beta

Glimps

Glimps - search plugin for Safari. - better then Inquisitor.

Keywurl

Other useful extension is Keywurl - A small, free plugin for Safari that adds keyword search to the browser’s address bar. (just like in FireFox).

Communications

Mail

On Windows and Ubuntu I prefer Mozilla Thunderbird. But on Mac, I found native Mail.app is useable enough. And it seems to be faster than Thunderbird.

Reading

Reading RSS

Initially, I have installed ... But when I tried Vienna, I stayed on it.

Reading CHM files

There are a number CHM file readers available. For now, I've stayed on Chmox. Significant disadvantage of this program it is not possible to view CHMs with windows-1251 encoding.

Entertainment

GimmeSomeTune - iTunes Plugin

Nice iTunes plugin that fetches lyrics and artwork for currently playing composition. It has last.fm. support. It may start automatically when you start iTunes and shutdowns when you exit it.

Development

SVN Client

SCPlugin - My choice is SVN client with Finder integration.

Games

I like RPG and Battle for Wesnoth is very nice, balanced and playable game. And it's absolutely Free and Open Source!

«Трусливая» разработка

2007-10-09T23:56:00.000+04:00

Я называю трусливой разработкой состояние проекта, когда некоторые (или все) члены команды избегают вносить изменения в исходный код или конфигурационные файлы.
Такое бывает на завершающих стадиях проекта, когда получена некая относительно работоспособная версия сиситемы. В этот момент аналитик или менеджер приходит к разработчикам и просит внести не очень большое изменение в функциональность. В ответ ему говорят, что "лучше мы ничего не будем трогать, чтобы не сломать". Услышать такие слова перед выпуском релиза - это нормально. Действительно, внесение изменений изменит скоуп (scope) релиза и отодвинет его дату, а все уже хотят поскорей его сдать. Но если такое происходит в начае релиза - это повод задуматься: а владеют ли разработчики кодом в полном объеме?

Разве разработчик может не владеть кодом, спросит начинающий менеджер проекта? Ответ: Да. И дело здесь не в профессионализме разработчиков. Причины могут быть различны, например:

Отсутствие понимания у разработчика общей картины поведения системы. Невозможность предсказать изменения и оценить "размер бедствия".
Опасения разрушить взаимодействия между слабосвязанными компонетами: невозможно сказать, на что повлияет сделанное изменение.
Новые люди в проекте. Они боятся лезть в чужой код, особенно, если его автор уволился.
Психологическая усталость: нет драйва затевать большую переделку.
Противоречия внутри команды: один разработчик отказывается работать с кодом другого разработчика.

Осторожность даже может быть признаком профессионализма и наличия негатовного опыта в прошлом. Вот почему необстреляный соллдат так рвется в бой. Ветераны не лезут на рожон. Другими признаками "трусливого" процесса могут быть:

Саботирование изменений
Неопреледенные эстимэйты(estimates): разработчики стараются не предоставлять менеджеру информацию, о сроках разработки. На самоа деле, они не могут даже приблизительно определить эти сроки. Возможно, что какие-то сроки все же будут заявлены, но они будут либо взяты с большим запасом, либо

На мой взгляд, нужно как можно скорее менять ситуацию, переходя от боязни изменений к готовности вносит изменения. В противном случае теряется мотивация (драйв) у остальных членов команды (черевато развалом команды), наступает застой, продукт перестает развиваться.

Итак, как я предлагаю исправлять ситуацию:

Начать вносить небольшие изменения, используя техники рефакторинга (см.Мартин Фаулер "Рефакторинг")
Выносить новую функциональность в отдельный, дублирующий, компонент, постепенно перенося функционал в него. При этом нужно быть готовым к потерям времени на переписывание.

А что бы вы посоветовали?

Development Process Guidelines

2007-10-09T21:30:00.000+04:00

"You're pirates. Hang the code, and hang the rules.
They're more like guidelines anyway."

Pirates of the Caribbean: The Curse of the Black Pearl

I'll try to figure out some configuration and development process guidelines. Don't take it too seriously, it's just a guidelines :-)

Required infrastructure

Following tools and environments must be available:

Issue Tracking system - JIRA or BugZilla
Version Control System [VCS] - Subversion, CVS, etc.
Continuous Integration Tool [CI tool] - Hudson, Continuum etc.
System Test environment exists (dev-box) - for system test by development team (QA team - by request). Available for developers to deploy.
Integration Test environment exists (tst-box) - for QA team. Not available for developers
Pre-Production (user-acceptance) environment exists (uat-box) - visible to end-uses, used by another projects within organization (clients). Maintained by Integrators
Production environment (prod-box) - maintained by Integrators.

Project requirements

Project structure requires following:

Each system component should be buildable (build script exists)
Each system component should be buildable on the remote machine using CI tool without human intervention (no manual source modifying) by schedule or forced build.

Roles

Developer - works with code

Builder - prepares the distribution

Tester - tests the application
Integrator - manages UAT and PROD environments

Single person may share multiple roles

The Process

Builder gets the binaries from the CI Tool and deploys to dev-box environment.
When internal system test passed:

Packages components, deployed to dev-box, into distribution package with build number assigned.
Builder submits the Package to SCM or special folder.
Builder assembles the change list (or marks issues in issue tracking system).
Builder writes deployment instructions (if required)
Builder sends changelist, deployment instructions and reference to the distribution package to the Tester.

Tester gets the package from the Builder and deploys it to Dev-box.
Tester tests changes described in CHANGELIST or from Bug Tracking system as well as the regression tests
If QA test passed:

Tester marks Distribution package as Release Candidate
Developers implement features and fix bugs. All changes are submitted to the VCS[Version Control System]
Tester writes Release Notes for RC.
Tester sends deploys tested package together with release notes to the Integrator
Integrator installs RC version to uat-box. (Integrator learns how to install the new release over existing running system.)

If UAT phase passed

RC version is marked as release version
Integrator installs RC version to the customer's server.

I must have left something important in process.
Comments are welcome ;-)

Coding java persistence: JPA vs. Hibernate

2007-09-03T03:03:00.000+04:00

In my current projects, I deal with database persistence layer. I use Hibernate implementation of the JPA 1.0 API. But restrictions of JPA API limits my ability to use some cool features of Hibernate, including

Full control over cascade behavior;

Indexed collections;

Collections of primitive values.

"Use JPA when possible, and Hibernate extensions where you can't do without" is a reasonable solution, but... It smells.... Anyway, the code becomes not portable enough when using Hibernate extensions. May be, it would be better to skip JPA and relay on Plain Old Hibernate (POH)?

XML Config vs. Annotations: Prons and Cons

JPA and Hibernate both supports XML mapping config and annotation config.

XML does not require to import annotations in entity classes. It makes entities more portable. They stay a simple POJOs, without any extra dependencies. It makes possible to package them in separate jar and include as a dependency in the client tier.

Annotations make mapping config to live together with property declarations in java file. It is more readable to the developer. It make sense when you don't plan to expose your entities outside the persistence module.

Java Naming Conventions for Sample Project

2007-08-24T12:04:00.000+04:00

Java Naming Conventions for Sample Project

Java package naming

com.company.project – project-wide package prefix. Should not be used directly.
com.company.project.web – web client package prefix

Common packages

com.company.project.commons – project-wide common classes, including exceptions
com.company.project.commons.util – project-wide gnerial purpose utilities.
com.company.project.commons.persistence – common classes retaled to server side persistence (Persistence API 1.0)
com.company.project.commons.ws – WebService related utilities.

Sub-system packages

com.company.project.<subsystem>.<component> - may contain exceptions
domain – contains interfaces, classes and enums related to subsystem's domain model representation.
persistence – persistnt entities should be placed here. EJB 2.1 beans too.
component – session beans (EJB3) with CRUD logic (managers over persistence tier)
util – various service utilities, e.g. DTO assemblers and helpers
business – Session beans with complex logic. These classes deals with component layer and may use persistence entities POJOs as Data Transfer Objects (DTO) with lazy loading within a transaction.
util – various service utilities, e.g. DTO assemblers and helpers
facade – Contains service facades. Serice facades are POJOs (preferrable) or EJB3 session beans which may access business and component layer beans.
- jaxws – contains JAXWS service implementations.
  - skeletons – contains generated JAXWS interfaces
- axis – contains AXIS service facade implementations
  - skeletons – contains axis generated skeletons
- util – various service utilities, e.g. DTO assemblers and helpers
client – contains (web) service clients
- jaxws – contains JAXWS service client.
  - stubs – contains jaxws generated sstubs
- axis – contains AXIS service client.
  - stubs – contains axis generated stubs

Java class naming

Following conventions should be applied to class naming:

Persistent entity should have an «Entity» suffix
Session beans should have an interface and implementation: FooManager and FooManagerBean
WebServices session bean implementation should be named with suffix FooPortImpl. If it's a session bean – FooPortBean.
Factories should have a «Factory» suffix
We use the following names for the parts of an entity / session bean:

Enterprise bean class: <name>Bean
Local home interface: <name>Home
Local interface: <name>.

Accessor methods of an enterprise bean class should be grouped by field
...

Configuring WS-Security for Axis 1.4 client

2007-05-23T14:13:00.001+04:00

I was looking how to enable WS-Security features in the Axis client to my web service application. The article I found describes how to do this.

I have tested it with Axis 1.4 client.

The things you need to configure axis client are:

Copy wss4j.jar (rev. 1.5.1), opensaml-1.1.jar and xmlsec-20050514.jar (from the openSAML distribution) to classpath (WEB-INF/lib)
Add handler to client.wsdd:
 <deployment xmlns="http://xml.apache.org/axis/wsdd/" java="http://xml.apache.org/axis/wsdd/providers/java"> <transport name="http" pivot="java:org.apache.axis.transport.http.HTTPSender"> <globalconfiguration> <requestflow> <handler type="java:org.apache.ws.axis.security.WSDoAllSender"> <parameter name="action" value="UsernameToken"> <parameter name="passwordType" value="PasswordDigest"> <parameter name="mustUnderstand" value="false"> </handler> </requestflow> </globalconfiguration> </transport> </deployment>

You dont need to hardcode username and password as a handler parameters as described in the article. Just call setUsername(...) and setPassword(...) methods of your Stub.

JBoss Web Services 1.2.0 has been released

2007-03-02T12:50:00.000+03:00

There are a lot of issues were closed, but there are still ones that annoys.
For example, abstract complexTypes are not supported: JBWS-1554.

Important note: when using wstools for wsdl2java generation, don't forget to change "file" attribute to "location" in wstools-config.xml. In other case, you'll see NPE while instatiating java.io.File

Let's start

2007-01-27T11:11:00.000+03:00

Hi, Everyone!
It is my first post to this new blog.
You may find my old blog at c14s.livejournal.com^{[in a new window]}

Всем привет!
Это мой первый пост в новом БЛОГе.
Мой старый БЛОГ можно посмотреть по этому адресу: c14s.livejournal.com^{[в новом окне]}