====== Vaadin 7 Production Mode ======
In a normal environment you would have at least 2 environments to deploy your Vaadin application to, your own development environment and the production environment. Vaadin offers a production mode where things are optimized for performance. In production mode the debug window cannot be enabled via the url, Parameter //debug=true//.

===== Enable Production Mode =====

==== Annotations ====
You can annotate your servlet with the following code to set the productionMode to true (or false).

  @VaadinServletConfiguration(productionMode = true, ui = DemoUi.class)

==== WAR File - web.xml ====
Normally the production mode is set via the //web.xml// file in the web application archive.

<sxh xml>
<context-param>
    <description>Vaadin production mode</description>
    <param-name>productionMode</param-name>
    <param-value>false</param-value>
</context-param>
</sxh>

<note>
The con side of this approach is that regardless of the environment the production mode is always the same as declared in the //web.xml// file.
</note>

==== VM Argument ====
Vaadin supports setting the production mode via a VM argument. The naming of the argument is as follows:

  <vaadin servlet base package name>.productionMode=true|false

If the default VaadinServlet (package //com.vaadin.server//) class is used the argument must be

  com.vaadin.server.productionMode=true|false

If a custom VaadinServlet class is declared in the //web.xml// file the package name of the custom class must be used.

==== Programmatically Settings ====
If the above described ways to the set the production mode don't suffice then there is also the option to set the production mode programmatically, f. e. based on a JNDI resource value.

For this a custom VaadinServlet must be created and specified in the //web.xml// file. In the CustomVaadinServlet class the method //createDeploymentConfiguration// must be overridden.

<sxh java>
public class CustomVaadinServlet extends VaadinServlet {

    @Override
    protected DeploymentConfiguration createDeploymentConfiguration(Properties initParameters) {
        Boolean prodMode = getProductionMode();
        initParameters.setProperty("productionMode", prodMode.toString());
        
        DeploymentConfiguration configuration = super.createDeploymentConfiguration(initParameters);
        // don't add init parm productionMode after construction because productionMode in 
        // deployment configuration has already been evaluated and is only evaluated in constructor
        return configuration;
    }

    private Boolean getProductionMode() {
        boolean prodMode;
        ...
        return prodMode;
    }
}
</sxh>

The //super// call to the method will return an object of the class //DefaultDeploymentConfiguration// which supports checking the system properties of the JVM and the application provided values for the production mode.

{{tag>devel java vaadin}}