@Override
public ELContext getELContext() {
    if (elContext == null) {
        elContext = new ELContextWrapper(rootJspCtxt.getELContext(), jspTag, this);
        JspFactory factory = JspFactory.getDefaultFactory();
        JspApplicationContext jspAppCtxt = factory.getJspApplicationContext(servletContext);
        if (jspAppCtxt instanceof JspApplicationContextImpl) {
            ((JspApplicationContextImpl) jspAppCtxt).fireListeners(elContext);
        }
    }
    return elContext;
}
 

@Override
public JspApplicationContext getJspApplicationContext(
        final ServletContext context) {
    if (Constants.IS_SECURITY_ENABLED) {
        return AccessController.doPrivileged(
                new PrivilegedAction<JspApplicationContext>() {
            @Override
            public JspApplicationContext run() {
                return JspApplicationContextImpl.getInstance(context);
            }
        });
    } else {
        return JspApplicationContextImpl.getInstance(context);
    }
}
 

@Override
public JspApplicationContext getJspApplicationContext(
        final ServletContext context) {
    if (Constants.IS_SECURITY_ENABLED) {
        return AccessController.doPrivileged(
                new PrivilegedAction<JspApplicationContext>() {
            @Override
            public JspApplicationContext run() {
                return JspApplicationContextImpl.getInstance(context);
            }
        });
    } else {
        return JspApplicationContextImpl.getInstance(context);
    }
}
 

@Override
public JspApplicationContext getJspApplicationContext(
        final ServletContext context) {
    if (Constants.IS_SECURITY_ENABLED) {
        return AccessController.doPrivileged(
                new PrivilegedAction<JspApplicationContext>() {
            @Override
            public JspApplicationContext run() {
                return JspApplicationContextImpl.getInstance(context);
            }
        });
    } else {
        return JspApplicationContextImpl.getInstance(context);
    }
}
 

/**
 * On Tomcat we need to sometimes force a class load to get our hands on the JspFactory
 */
private static void setJspELFactory(ServletContext startupObject, ELResolver resolver)
{
    JspFactory factory = JspFactory.getDefaultFactory();
    if (factory == null)
    {
        try
        {
            try {
                Class.forName("org.apache.jasper.servlet.JasperInitializer");
            } catch (final Throwable th) {
                Class.forName("org.apache.jasper.compiler.JspRuntimeContext");
            }
            factory = JspFactory.getDefaultFactory();
        }
        catch (Exception e)
        {
            // ignore
        }

    }

    if (factory != null)
    {
        JspApplicationContext applicationCtx = factory.getJspApplicationContext(startupObject);
        applicationCtx.addELResolver(resolver);
    }
    else
    {
        logger.debug("Default JSPFactroy instance has not found. Skipping OWB JSP handling");
    }
}
 

public JspApplicationContext getJspApplicationContext
        (ServletContext context) {
    return JspApplicationContextImpl.findJspApplicationContext(context);
}