In GateIn 3.5, you can create a WebApp folder to contain the configuration of the list of gadgets which are automatically added to the Application Registry.

This section shows you how to create a WebApp which has a standard structure processed by the Gadget importer. It covers the following topics:

Structure of WebApp

A WebApp should be organized as the following structure:

Necessary files

The WebApp structure consists of two necessary files: web.xml and gadget.xml.

In the web.xml file, there are 2 requirements:

<web-app>

  <display-name>eXoGadgets</display-name>

  <filter>

    <filter-name>ResourceRequestFilter</filter-name>

    <filter-class>org.exoplatform.portal.application.ResourceRequestFilter</filter-class>

  </filter>



  <filter-mapping>

    <filter-name>ResourceRequestFilter</filter-name>

    <url-pattern>/*</url-pattern>

  </filter-mapping>



  <servlet>

    <servlet-name>GateInServlet</servlet-name>

    <servlet-class>org.gatein.wci.api.GateInServlet</servlet-class>

    <load-on-startup>0</load-on-startup>

  </servlet>



  <servlet-mapping>

    <servlet-name>GateInServlet</servlet-name>

    <url-pattern>/gateinservlet</url-pattern>

  </servlet-mapping>



</web-app>

The gadget.xml file is used to locate the configuration of gadgets that you want to add to the Application Registry.

 <gadgets

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.gatein.org/xml/ns/gatein_objects_1_0 http://www.gatein.org/xml/ns/gadgets_1_0"

    xmlns="http://www.gatein.org/xml/ns/gadgets_1_0">



    <gadget name="To-do">

        <path>/gadgets/Todo/Todo.xml</path>

    </gadget>



    <gadget name="Calendar">

        <path>/gadgets/Calendar/Calendar.xml</path>

    </gadget>



    <gadget name="Calculator">

        <path>/gadgets/Calculator/Calculator.xml</path>

    </gadget>



    <gadget name="rssAggregator">

        <path>/gadgets/rssAggregator/rssAggregator.xml</path>

    </gadget>



  <gadget name="Currency">

    <url>http://www.donalobrien.net/apps/google/currency.xml</url>

  </gadget>



  <gadget name="ServicesManagement">

    <path>/gadgets/ServicesManagement/ServicesManagement.xml</path>

  </gadget>

</gadgets>

This file has 3 important tags:

Local gadget resources

For local gadgets, their source and resources should be located in the same folder.

See the example about the To-do gadget: