vars.add(toVar(Variable.SESSION_ATTRIBUTE,var));
for (String var : request.getAttributeNames(Scope.REQUEST))
vars.add(toVar(Variable.REQUEST_ATTRIBUTE,var));
for (String var : request.getHeaderNames())
vars.add(toVar(Variable.REQUEST_HEADER, var));
Target target = request.getTarget();
for (String var : target.getParameterNames())
vars.add(toVar(Variable.TARGET_PARAMETER, var));
vars.add(Variable.REQUEST_CONTEXT_PATH.name().toLowerCase());
vars.add(Variable.REQUEST_CONTENT_TYPE.name().toLowerCase());
vars.add(Variable.REQUEST_URI.name().toLowerCase());
vars.add(Variable.REQUEST_RESOLVED_URI.name().toLowerCase());