private TeaServletEngine createTeaServletEngine() throws ServletException {
TeaServletEngineImpl engine;
if (mProperties.getBoolean("autocompile", false)) {
engine = new TeaServletEngineImplDev();
} else {
engine = new TeaServletEngineImpl();
}
Object tsea = mServletContext.getAttribute(ENGINE_ATTR);
if (tsea == null || !(tsea instanceof TeaServletEngine[])) {
tsea = new TeaServletEngine[] {engine};
} else {
TeaServletEngine[] old_tsea = (TeaServletEngine[]) tsea;
int old_length = old_tsea.length;
tsea = new TeaServletEngine[old_length + 1];
int i;
for (i = 0; i < old_length; i++) {
((TeaServletEngine[]) tsea)[i + 1] = old_tsea[i];
}
((TeaServletEngine[]) tsea)[0] = engine;
}
mServletContext.setAttribute(ENGINE_ATTR, tsea);
return engine;
}
/**
* Initializes the TeaServlet. Creates the logger and loads the user's application.
*
* @param config the servlet config
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
mServletConfig = config;
config.getServletContext().log("Initializing TeaServlet...");
String ver = System.getProperty("java.version");
if (ver.startsWith("0.") || ver.startsWith("1.2") || ver.startsWith("1.3")) {
config.getServletContext().log("The TeaServlet requires Java 1.4 or higher to run properly");
}
mServletContext = setServletContext(config);
mServletName = setServletName(config);
mProperties = new PropertyMap();
mSubstitutions = SubstitutionFactory.getDefaults();
mResourceFactory = new TeaServletResourceFactory(config.getServletContext(), mSubstitutions);
Enumeration<?> e = config.getInitParameterNames();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
String value = SubstitutionFactory.substitute(config.getInitParameter(key));
if (key.equals("debug")) {
mDebugEnabled = Boolean.parseBoolean(value);
continue;
}
mProperties.put(key, value);
}
loadDefaults();
discoverProperties();
createListeners();
createLog(mServletContext);
mLog.applyProperties(mProperties.subMap("log"));
createMemoryLog(mLog);
mInstrumentationEnabled = mProperties.getBoolean("instrumentation.enabled", true);
Initializer initializer = new Initializer();
if (mProperties.getBoolean("startup.background", false)) {
mInitializer = Executors.newSingleThreadExecutor().submit(initializer);
} else {
initializer.call();
}
}