public void registerELResolverAndListenerWithJsp(ServletContext context, boolean reloaded) {
if (webConfig.isSet(WebContextInitParameter.ExpressionFactory) || !isJspTwoOne(context)) {
// first try to load a factory defined in web.xml
if (!installExpressionFactory(
context, webConfig.getOptionValue(WebContextInitParameter.ExpressionFactory))) {
throw new ConfigurationException(
MessageUtils.getExceptionMessageString(
MessageUtils.INCORRECT_JSP_VERSION_ID,
WebContextInitParameter.ExpressionFactory.getDefaultValue(),
WebContextInitParameter.ExpressionFactory.getQualifiedName()));
}
} else {
// JSP 2.1 specific check
if (JspFactory.getDefaultFactory().getJspApplicationContext(context) == null) {
return;
}
// register an empty resolver for now. It will be populated after the
// first request is serviced.
FacesCompositeELResolver compositeELResolverForJsp =
new ChainTypeCompositeELResolver(FacesCompositeELResolver.ELResolverChainType.JSP);
ApplicationAssociate associate = ApplicationAssociate.getInstance(context);
if (associate != null) {
associate.setFacesELResolverForJsp(compositeELResolverForJsp);
}
// get JspApplicationContext.
JspApplicationContext jspAppContext =
JspFactory.getDefaultFactory().getJspApplicationContext(context);
// cache the ExpressionFactory instance in ApplicationAssociate
if (associate != null) {
associate.setExpressionFactory(jspAppContext.getExpressionFactory());
}
// register compositeELResolver with JSP
try {
jspAppContext.addELResolver(compositeELResolverForJsp);
} catch (IllegalStateException e) {
ApplicationFactory factory =
(ApplicationFactory) FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
Application app = factory.getApplication();
if (app.getProjectStage() != ProjectStage.UnitTest && !reloaded) {
throw e;
}
}
// register JSF ELContextListenerImpl with Jsp
ELContextListenerImpl elContextListener = new ELContextListenerImpl();
jspAppContext.addELContextListener(elContextListener);
}
}
private boolean installExpressionFactory(ServletContext sc, String elFactoryType) {
if (elFactoryType == null) {
return false;
}
try {
ExpressionFactory factory =
(ExpressionFactory) Util.loadClass(elFactoryType, this).newInstance();
ApplicationAssociate associate = ApplicationAssociate.getInstance(sc);
if (associate != null) {
associate.setExpressionFactory(factory);
}
return true;
} catch (Exception e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.severe(
MessageFormat.format("Unable to instantiate ExpressionFactory ''{0}''", elFactoryType));
}
return false;
}
}