[Tapestry Wiki] Update of "Tapestry5HowToIocOnly" by DavorHrg

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The following page has been changed by DavorHrg:
http://wiki.apache.org/tapestry/Tapestry5HowToIocOnly

New page:
Here is a simple example on how to use only tapestry-ioc in your app.[[BR]]
Using IOC has many advantages, so why not get used to it even in the smallest apps.

if you are comfortable with maven: pom.xml
{{{
<?xml version="1.0" encoding="UTF-8"?>
<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>tapestry.mini-app</groupId>
  <artifactId>mini-app</artifactId>
  <version>0.0.1</version>
  <build>
    <finalName>mini-app</finalName>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.5</source>
          <target>1.5</target>
          <optimize>true</optimize>
        </configuration>
      </plugin>
    </plugins>
  </build>
  <dependencies>
    <dependency>
      <groupId>org.apache.tapestry</groupId>
      <artifactId>tapestry-ioc</artifactId>
      <version>${tapestry-release-version}</version>
    </dependency>    
  </dependencies>
  <properties>
    <tapestry-release-version>5.0.6</tapestry-release-version>
  </properties>
</project>
}}}

or add these libraries to your path
{{{
javassist-3.4.ga.jar
log4j-1.2.14.jar
tapestry-ioc-5.0.5.jar
slf4j-api-1.4.3.jar
slf4j-log4j12-1.4.3.jar
}}}

Your main class is fairly simple(Main.java)
{{{#!java
package tapestry.mini;

import org.apache.tapestry.ioc.Registry;
import org.apache.tapestry.ioc.RegistryBuilder;

import tapestry.mini.services.Hello;
import tapestry.mini.services.MiniAppModule;

public class Main {

    public static void main(String[] args) {
        RegistryBuilder builder = new RegistryBuilder();
        builder.add(MiniAppModule.class);
        
        Registry registry = builder.build();
        registry.performRegistryStartup();
        
        
        Hello hello = registry.getService(Hello.class);
        hello.sayHello();
    }
}
}}}

!MiniAppModule.java:
{{{#!java
package tapestry.mini.services;

import org.apache.tapestry.ioc.ServiceBinder;

public class MiniAppModule {
    
    public static void bind(ServiceBinder binder){
        binder.bind(Hello.class);
        binder.bind(Output.class, OutputImpl.class);
    }
}
}}}

A small class that also shows automatic dependency injection: Hello.java
{{{#!java
package tapestry.mini.services;

public class Hello {
    
    private final Output _output;

    public Hello(Output output) {
        _output = output;
    }
    
    public void sayHello(){
        _output.say("Hello world");
    }
}
}}}


a very simple dependancy: Output.java
{{{#!java
package tapestry.mini.services;

public interface Output {
    public void say(String text);
}
}}}

A simple implementation of course: !OutputImpl.java
{{{#!java
package tapestry.mini.services;

public class OutputImpl implements Output{
    public void say(String text){
        System.out.println(text);
    }
}
}}}

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