The "if" element defines a condition that must resolve to true in order for the navigation case on which it is defined to be matched, with the existing match criteria (action method and outcome) as a prerequiste, if present. The condition is defined declaratively using a value expression in the body of this element. The expression is evaluated at the time the navigation case is being matched. If the "from-outcome" is omitted and this element is present, the navigation handler will match a null outcome and use the condition return value to determine if the case should be considered a match.

Java class for faces-config-ifType complex type.

The following schema fragment specifies the expected content contained within this class.

 <complexType name="faces-config-ifType">
   <simpleContent>
     <extension base="<http://xmlns.jcp.org/xml/ns/javaee>faces-config-el-expressionType">
       <attribute name="id" type="{http://www.w3.org/2001/XMLSchema}ID" />
     </extension>
   </simpleContent>
 </complexType>