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This is the master POM file for Sun's Implementation of the JSF 1.2 Specification.
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package com.sun.faces.spi;

import com.sun.faces.util.Util;

/**
 * InjectionProviders that implement this interface
 * can be configured via META-INF/services/com.sun.faces.spi.injectionprovider.
 *
 * 
The format of the configuration entries is:
 * 
 *   <InjectionProviderClassName>:<DelegateClassName>
 * 
 *
 * Example:
 *    
com.sun.faces.vendor.GlassFishInjectionProvider:com.sun.enterprise.InjectionManager
 * 
 *
 * Multiple DiscoverableInjectionProviders can be configured
 * within a single services entry.
 */
public abstract class DiscoverableInjectionProvider implements InjectionProvider {


    /**
     * @param delegateClass the name of the delegate used by the
     *  InjectionProvider implementation.
     * @return returns true if the
     *  InjectionProvider instance
     *  is appropriate for the container its currently
     *  deployed within, otherwise return false
     */
    public static boolean isInjectionFeatureAvailable(String delegateClass) {

        try {
            Util.loadClass(delegateClass, null);
            return true;
        } catch (Exception e) {
            return false;
        }
        
    }

}