[weld-issues] [JBoss JIRA] Created: (WELD-434) Use class loading only to detect JSF version

[Dan Allen (JIRA)]

Use class loading only to detect JSF version
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                 Key: WELD-434
                 URL: https://jira.jboss.org/jira/browse/WELD-434
             Project: Weld
          Issue Type: Bug
          Components: Reflection layer, Web Tier integration (JSF, JSP, EL and Servlet) 
    Affects Versions: 1.0.1.CR2
            Reporter: Dan Allen
            Assignee: Dan Allen
            Priority: Minor
             Fix For: 1.0.1.GA


The JsfApiAbstraction attempts to detect the presence of the method FacesContext#isPostback() to determine if JSF 2.0 is on the classpath. This causes a problem if Sun's stripped APIs are on the classpath at runtime, even if the developer has no intention of using JSF. When an attempt is made to detect the presence of a method from stripped code, the check blows up.

An example of the stripped code is the artifact javax.javaee-api:6.0 in the NetBeans Maven repository: http://download.java.net/maven/2/javax/javaee-api/6.0/

It would be safer to search for the javax.faces.component.behavior.Behavior class to detect if JSF 2 is present.

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